CN111208200B - Ti-Al alloy liner structure consistency detection device and detection method - Google Patents
Ti-Al alloy liner structure consistency detection device and detection method Download PDFInfo
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- CN111208200B CN111208200B CN202010127120.3A CN202010127120A CN111208200B CN 111208200 B CN111208200 B CN 111208200B CN 202010127120 A CN202010127120 A CN 202010127120A CN 111208200 B CN111208200 B CN 111208200B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/4409—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison
- G01N29/4436—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison with a reference signal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/46—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by spectral analysis, e.g. Fourier analysis or wavelet analysis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0234—Metals, e.g. steel
Abstract
The invention belongs to the technical field of nondestructive testing, and particularly relates to a device and a method for detecting the tissue consistency of a Ti-Al alloy shaped charge liner. The invention provides a Ti-Al alloy shaped charge liner structure consistency detection device, which comprises a supporting rod, an impact force applying component and an audio signal acquisition component which are arranged beside the supporting rod when in use, and signal processing software electrically connected with the audio signal acquisition component. The invention utilizes the impact force applying component to make the Ti-Al series alloy shaped charge liner placed on the supporting rod generate sound, obtains the characteristic frequency of the Ti-Al series alloy shaped charge liner through the audio signal collecting component and the signal processing software, and compares the characteristic frequency with the standard frequency of a standard Ti-Al series alloy shaped charge liner based on the audio detection technology to realize the nondestructive detection of the quality of the Ti-Al series alloy shaped charge liner.
Description
Technical Field
The invention belongs to the technical field of nondestructive testing, and particularly relates to a device and a method for detecting the tissue consistency of a Ti-Al alloy shaped charge liner.
Background
In the oil and gas exploitation process, the perforating effect of the perforating charge is directly determined by whether the quality of the shaped charge cover is qualified or not. At present, the quality detection of the perforating charge in industrial production mainly depends on manual measurement of the wall thickness of a liner, and shape detection is carried out on the liner; in order to determine whether the internal tissues of the liner are consistent, the liner needs to be checked for destructive testing, and the detection method generally has the problems of low measurement precision, low detection efficiency and low reliability. In view of improving the detection efficiency of the liner, ensuring the quality of the liner, realizing hundred percent detection of the liner and the like, a high-accuracy nondestructive detection method for the tissue consistency of the liner is needed.
The Ti-Al alloy belongs to intermetallic compounds and has higher sound velocity, and the Ti-Al alloy shaped charge liner can form high-speed jet flow in the loading process, thereby carrying more energy and being beneficial to obtaining the effects of high penetration depth and large open hole. On one hand, the Ti-Al alloy has excellent high-temperature strength, and the liner can form short and thick energy-gathering jet flow to realize the effect of drilling a larger hole on a rock; on the other hand, the Ti-Al alloy has good high-temperature plasticity, so that the uniform deformation capability of the model cover under the explosive loading condition is stronger, and the jet flow is not easy to break, thereby obtaining good penetration and perforation stability. The early-stage experimental result proves that the Ti-Al alloy shaped charge liner can realize larger opening of stratum rocks and concrete.
For the Ti-Al series alloy shaped charge liner, the microstructure state in the alloy has obvious influence on the perforating effect of the perforating charge, so that the tissue state consistency of the same product is required to be ensured in the industrial production process of the shaped charge liner, and the perforating effect of the perforating charge is ensured. At present, no nondestructive testing method for the consistency of the internal structure of the Ti-Al alloy liner is reported.
Disclosure of Invention
The invention aims to provide a device and a method for detecting the structural consistency of a Ti-Al alloy liner, which have high detection efficiency and can realize nondestructive detection of the structural consistency inside the Ti-Al alloy liner without damaging the Ti-Al alloy liner.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a Ti-Al series alloy shaped charge liner structure consistency detection device, which comprises a supporting rod 1, an impact force applying part 2 and an audio signal acquisition part 3 which are arranged beside the supporting rod 1 in use, and signal processing software 4 electrically connected with the audio signal acquisition part 3.
Preferably, the height of the support rod 1 is 1.2-1.5 times of the height of the Ti-Al alloy shaped charge liner; the top of the supporting rod 1 is smooth and hemispherical, so that the top of the supporting rod 1 and the inner side of the head of the Ti-Al alloy shaped charge liner form a point support.
Preferably, the impact force applying part 2 comprises an arc-shaped slide rail 21 and a striking ball 22 arranged in the arc-shaped slide rail 21.
Preferably, the height of the arc-shaped slide rail 21 is adjustable, and when the support rod 1 is used, the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al alloy shaped charge liner placed on the support rod 1 are on the same horizontal plane.
Preferably, the arc-shaped slide rail 21 is an 1/4 circle, and the radius of the circle is 15-30 cm.
Preferably, the impact ball 22 is made of metal; the density of the impinged pellets 22 is greater than 7.8g/cm3The diameter is 5-8 mm.
Preferably, the audio signal acquisition component 3 comprises an acoustic sensor and a data acquisition card.
The invention also provides a detection method for the structural consistency of the Ti-Al alloy liner based on the detection device in the technical scheme, which comprises the following steps:
placing a Ti-Al series alloy shaped charge liner to be tested on a support rod 1 with an opening facing downwards;
an impact force is applied to the outside of the Ti-Al alloy liner by an impact force applying member 2, so that the Ti-Al alloy liner emits sound;
collecting the audio signal of the sound by using an audio signal collecting component 3, and obtaining the frequency spectrum of the Ti-Al alloy shaped charge liner to be detected through signal processing software 4;
and comparing the frequency spectrum of the Ti-Al series alloy shaped charge liner to be detected with a preset standard frequency spectrum, and judging whether the tissues of the Ti-Al series alloy shaped charge liner to be detected are consistent.
Preferably, the method of applying an impact force comprises the steps of: adjusting the height of the arc-shaped slide rail 21 to enable the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al alloy shaped charge liner to be on the same horizontal plane; adjusting the distance between an arc-shaped slide rail 21 and the support rod 1 to enable the distance between the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al alloy shaped charge liner to be 2-3 times of the diameter of the impact small ball 22; releasing the impact small ball 22 at the fixed position of the arc-shaped slide rail 21, enabling the impact small ball 22 to slide along the arc-shaped slide rail 21, and horizontally flying out from the bottom end of the arc-shaped slide rail 21 to impact the bottom edge of the Ti-Al alloy shaped charge liner to be tested.
Preferably, the method for judging the tissue consistency of the Ti-Al alloy liner to be tested comprises the following steps:
comparing the number of characteristic frequencies and each characteristic frequency value in the standard frequency spectrum and the frequency spectrum of the Ti-Al series alloy liner to be detected;
if the number of the characteristic frequencies in the frequency spectrum of the Ti-Al series alloy liner to be detected is consistent with the number of the characteristic frequency spectrum in the standard frequency spectrum, and the difference between each characteristic frequency value and the corresponding characteristic frequency value in the standard frequency spectrum is less than 0.1%, the structural consistency of the Ti-Al series alloy liner to be detected is qualified;
and if the number of the characteristic frequencies in the frequency spectrum of the Ti-Al series alloy liner to be detected is not consistent with the number of the characteristic frequency spectrum in the standard frequency spectrum, or the difference between one or more characteristic frequency values and the corresponding characteristic frequency value in the standard frequency spectrum is more than or equal to 0.1%, indicating that the structural consistency of the Ti-Al series alloy liner to be detected is unqualified.
The invention provides a Ti-Al series alloy shaped charge liner structure consistency detection device, which comprises a supporting rod 1, an impact force applying part 2 and an audio signal acquisition part 3 which are arranged beside the supporting rod 1 in use, and signal processing software 4 electrically connected with the audio signal acquisition part 3. The invention utilizes the impact force applying component 2 to make the Ti-Al series alloy shaped charge liner placed on the support rod 1 produce sound, the characteristic frequency of the Ti-Al series alloy shaped charge liner is collected by the audio signal collecting component 3 and the signal processing software 4, and the characteristic frequency is compared with the standard frequency of the standard Ti-Al series alloy shaped charge liner based on the audio detection technology, thereby realizing the nondestructive detection of the quality of the Ti-Al series alloy shaped charge liner. The detection device provided by the invention has high detection efficiency and high accuracy, and can realize nondestructive detection on the consistency of the internal tissues of the Ti-Al alloy shaped charge liner.
Drawings
FIG. 1 is a schematic view of a Ti-Al alloy liner structure consistency detection apparatus according to example 1 of the present invention; wherein, 1 is a support rod, 2 is an impact force applying part, 21 is an arc-shaped slide rail, 22 is an impact ball, 3 is an audio signal collecting part, and 4 is signal processing software;
FIG. 2 is a standard spectrum of the liner of Ti-Al alloy in example 1;
FIG. 3 is a frequency spectrum of the Ti-Al alloy liner to be tested in example 1;
FIG. 4 is a frequency spectrum of the Ti-Al alloy liner to be tested in example 2;
FIG. 5 is a standard spectrum of the liner of Ti-Al alloy in example 3;
FIG. 6 is a frequency spectrum of the Ti-Al alloy liner to be tested in example 3;
FIG. 7 shows the frequency spectrum of the Ti-Al alloy liner to be tested in example 4.
Detailed Description
The invention provides a Ti-Al series alloy shaped charge liner structure consistency detection device, which comprises a supporting rod 1, an impact force applying part 2 and an audio signal acquisition part 3 which are arranged beside the supporting rod 1 in use, and signal processing software 4 electrically connected with the audio signal acquisition part 3.
The detection device provided by the invention comprises a support rod 1, and is used for suspending a Ti-Al series alloy shaped charge liner to be detected on the support rod 1 with an opening facing downwards. In the invention, the top of the support rod 1 is preferably smooth and hemispherical, so that the top of the support rod 1 and the inner side of the head of the Ti-Al alloy shaped charge liner form a point support; the smooth hemispherical shape preferably has a diameter of <0.9 times the inner diameter of the head of the Ti — Al alloy liner. In the present invention, the material of the support rod 1 is preferably plastic, and more preferably PET, HDPE, PVC or PTFE. In the present invention, the height of the support rod 1 is preferably 1.2 to 1.5 times the height of the Ti-Al based alloy liner, and in the embodiment of the present invention, when the height of the Ti-Al based alloy liner is preferably 8 to 15cm, the height of the support rod is preferably 10 to 20 cm. As an embodiment of the present invention, the support rod is fixed to the fixed stand.
The detection device provided by the invention comprises an impact force applying component 2 which is arranged beside the supporting plate when in use and is used for applying impact force to the Ti-Al series alloy shaped charge liner to make the Ti-Al series alloy shaped charge liner generate sound. In the present invention, the impact force applying unit 2 preferably includes an arc-shaped slide rail 21 and a striking ball 22 disposed inside the arc-shaped slide rail 21. In the invention, the arc-shaped slide rail 21 is preferably an 1/4 circle, and the radius of the circle is preferably 15-30 cm. In the present invention, the material of the arc-shaped slide rail 21 is preferably plastic.
In the invention, the height of the arc-shaped slide rail 21 is preferably adjustable, and when the device is used, the bottom end of the arc-shaped slide rail 21 is preferably on the same horizontal plane with the bottom edge of the Ti-Al alloy shaped charge liner placed on the support rod 1; the distance between the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al series alloy shaped charge liner is preferably 2-3 times of the diameter of the impact pellet 22, and particularly preferably 10-16 mm. In the invention, plasticine is preferably placed under the bottom end of the arc-shaped slide rail 21, and the size of the plasticine is preferably 20-30 mm. The invention utilizes plasticine to catch the impact ball 22 which has impacted the Ti-Al series alloy shaped charge liner, thereby avoiding the generation of interference signals. In the present invention, the arc-shaped sliding rail 21 is preferably slidably fixed on the fixed frame; the fixing frame preferably comprises a fixing table and a fixing rod vertically arranged on the fixing table, the top end of the arc-shaped sliding rail 21 is preferably fixed to the top of the fixing rod, the fixing rod preferably comprises two sections of fixing rods, the fixing rod can be adjusted in a telescopic mode, and the height of the fixing rod is preferably adjusted through a bolt between the two sections of fixing rods, so that the height of the arc-shaped sliding rail is adjusted. In the present invention, the plasticine is preferably placed on the surface of the fixed table.
In the present invention, the material of the impact ball 22 is preferably metal, more preferably brass or tungsten alloy; the impact bead 22 preferably has a density greater than 7.8g/cm3More preferably 8.7 to 17.6g/cm3(ii) a The diameter of the impact ball 22 is preferably 5-8 mm.
The detection device provided by the invention comprises an audio signal acquisition part 3 which is arranged beside the support rod 1 when in use and is used for acquiring audio signals emitted by the Ti-Al alloy shaped charge liner. In the present invention, the audio signal collecting part 3 preferably includes an acoustic sensor and a data collecting card. In the invention, the acoustic sensor is preferably a microphone, and the acquisition frequency of the acoustic sensor is preferably 0-40 kHz. In the invention, the acquisition frequency of the data acquisition card is preferably greater than 40kHz, and the acquisition time of the data acquisition card is preferably greater than 10 s. In the present invention, the acoustic sensor and the data acquisition card are preferably connected by a wire.
The detection device provided by the invention also comprises signal processing software 4 electrically connected with the audio signal acquisition component 3, and the signal processing software is used for processing the audio signal acquired by the audio signal acquisition component 3, carrying out Fourier transform (FFT) on the audio signal and converting a time domain signal into a frequency domain signal. In the present invention, the signal processing software 4 is preferably Bruel & KjaerPULSE.
The invention also provides a detection method for the structural consistency of the Ti-Al alloy liner based on the detection device in the technical scheme, which comprises the following steps:
placing a Ti-Al series alloy shaped charge liner to be tested on a support rod 1 with an opening facing downwards;
an impact force is applied to the outside of the Ti-Al alloy liner by an impact force applying member 2, so that the Ti-Al alloy liner emits sound;
collecting the audio signal of the sound by using an audio signal collecting component 3, and obtaining the frequency spectrum of the Ti-Al alloy shaped charge liner to be detected through signal processing software 4;
and comparing the frequency spectrum of the Ti-Al series alloy shaped charge liner to be detected with a preset standard frequency spectrum, and judging whether the tissues of the Ti-Al series alloy shaped charge liner to be detected are consistent.
The invention places the Ti-Al series alloy shaped charge liner to be measured on the support rod 1 with the opening facing downwards. In an embodiment of the present invention, the height of the Ti-Al alloy liner is preferably 8 to 15 cm; the diameter of the inner side of the head of the Ti-Al alloy liner is preferably 4 to 6 mm.
After the Ti-Al series alloy shaped charge liner is placed, the invention applies impact force on the outer side of the Ti-Al series alloy shaped charge liner by the impact force applying part 2 to make the Ti-Al series alloy shaped charge liner generate sound. In the present invention, the method of applying an impact force preferably includes the steps of: adjusting the height of the arc-shaped slide rail 21 to enable the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al alloy shaped charge liner to be on the same horizontal plane; adjusting the distance between an arc-shaped slide rail 21 and the support rod 1 to enable the distance between the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al alloy shaped charge liner to be 2-3 times of the diameter of the impact small ball 22; and sliding the small impact ball 22 along the arc-shaped slide rail 21, horizontally flying out from the bottom end of the arc-shaped slide rail 21, and impacting the bottom edge of the Ti-Al alloy shaped charge liner to be tested. The invention leads the small impacting ball 22 to impact the bottom edge of the Ti-Al series alloy shaped charge liner, can lead the vibration to be more sufficient and is beneficial to collecting frequency spectrum.
When the Ti-Al series alloy shaped charge liner makes a sound, the invention utilizes the audio signal acquisition part 3 to acquire the audio signal of the sound and obtains the frequency spectrum of the Ti-Al series alloy shaped charge liner to be detected through the signal processing software 4. In the present invention, it is preferable that the acoustic sensor is used to collect sound, the audio signal is converted into an electrical signal by the data acquisition card, the signal is processed and converted by the signal processing software 4, and the time domain signal is converted into a frequency domain signal to obtain the frequency spectrum of the Ti — Al alloy shaped charge liner to be measured.
After the frequency spectrum of the Ti-Al series alloy shaped charge liner to be detected is obtained, the frequency spectrum of the Ti-Al series alloy shaped charge liner to be detected is compared with a preset standard frequency spectrum, and whether the tissues of the Ti-Al series alloy shaped charge liner to be detected are consistent or not is judged.
In the present invention, the method for determining the structural consistency of the Ti — Al alloy liner to be measured preferably includes the following steps:
comparing the number of characteristic frequencies and each characteristic frequency value in the standard frequency spectrum and the frequency spectrum of the Ti-Al series alloy liner to be detected;
if the number of the characteristic frequencies in the frequency spectrum of the Ti-Al series alloy liner to be detected is consistent with the number of the characteristic frequency spectrum in the standard frequency spectrum, and the difference between each characteristic frequency value and the corresponding characteristic frequency value in the standard frequency spectrum is less than 0.1%, the structural consistency of the Ti-Al series alloy liner to be detected is qualified;
and if the number of the characteristic frequencies in the frequency spectrum of the Ti-Al series alloy liner to be detected is not consistent with the number of the characteristic frequency spectrum in the standard frequency spectrum, or the difference between one or more characteristic frequency values and the corresponding characteristic frequency value in the standard frequency spectrum is more than or equal to 0.1%, indicating that the structural consistency of the Ti-Al series alloy liner to be detected is unqualified.
In the present invention, the characteristic frequency is a frequency corresponding to each peak in a frequency spectrum.
In the present invention, the method for determining the standard spectrum preferably includes: the method comprises the steps of firstly measuring the frequency spectrum of a Ti-Al series alloy shaped charge liner product, then carrying out destructive detection on the Ti-Al series alloy shaped charge liner product, wherein the detection items comprise structure and mechanical properties, and if the structural state of the Ti-Al series alloy shaped charge liner is qualified through detection, judging the frequency spectrum of the Ti-Al series alloy shaped charge liner to be a standard frequency spectrum.
In a particular embodiment of the invention, the number (N) of characteristic frequencies and the respective characteristic frequency value (f) in the standard spectrum are preferably plotted1、f2、f3...fN) If the number (N) of the characteristic frequencies in the frequency spectrum of the Ti-Al series alloy liner to be tested is consistent with the standard frequency spectrum (N), and each characteristic frequency (f) of the Ti-Al series alloy liner to be tested1*、f2*、f3*...fnCharacteristic frequency (f) corresponding to standard frequency spectrum1、f2、f3...fN) Phase difference<0.1%, indicating that the structure of the Ti-Al series alloy shaped charge liner to be detected is consistent with that of the standard shaped charge liner, and judging that the Ti-Al series alloy shaped charge liner to be detected is qualified; if the number (N) of the characteristic frequencies in the frequency spectrum of the Ti-Al series alloy shaped charge liner to be detected is not consistent with the standard frequency spectrum (N), or the difference between one or more characteristic frequencies and the corresponding characteristic frequency in the standard frequency spectrum is not less than 0.1%, the structure of the Ti-Al series alloy shaped charge liner to be detected is not consistent with the standard shaped charge liner with the same size, and the Ti-Al series alloy shaped charge liner to be detected is judged to be unqualified.
The detection method provided by the invention can realize the nondestructive detection of the tissue consistency of the Ti-Al series alloy shaped charge liner; the tissue qualification condition of the Ti-Al alloy shaped charge liner can be accurately judged, and the accuracy rate is more than 99 percent; the detection method provided by the invention is simple to operate and wide in applicability, and can be used for detecting the tissue consistency of Ti-Al alloy shaped charge liners with various components, shapes and sizes.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The Ti-Al series alloy liner structure consistency detection device adopted by the embodiment of the invention is shown in figure 1 and comprises a support rod 1, an impact force applying component 2, an audio signal acquisition component 3 and signal processing software 4, wherein the impact force applying component 2, the audio signal acquisition component 3 and the signal processing software 4 are arranged beside the support rod 1; the impact force applying component 2 includes an arc-shaped slide rail 21 fixed on the fixing frame and a striking ball 22 disposed in the arc-shaped slide rail 21.
Example 1
The detection device shown in fig. 1 is adopted to detect the structural consistency of the Ti-Al series alloy liner, and firstly, the standard frequency spectrum of the Ti-Al series alloy liner is determined:
a standard Ti-Al series alloy shaped charge liner (the material is Ti-46Al-1.5V-0.2C (at.%), the height is 8cm, the diameter of the inner side of the head is phi 4mm) is opened downwards and is suspended on a support rod 1 in the positive direction, the support rod 1 is made of PVC (polyvinyl chloride), the height is 13cm, and the top of the support rod 1 is a smooth hemisphere with the diameter of 3 mm; the impact force applying component 2 is composed of an arc slide rail 21 and an impact ball 22, the impact ball 22 is made of brass and has a density of 8.7g/cm3The diameter is 8 mm; selecting an arc-shaped slide rail 21 with the radius of 20cm, and adjusting the height of the arc-shaped slide rail 21 to enable the distance between the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al series alloy shaped charge liner to be 16 mm; will strike the small ball 22 by the arc slide railThe top end of the ball 21 is released, the small impact ball 22 slides down along the arc-shaped slide rail 21 and flies out horizontally from the bottom end to impact the bottom edge of the standard Ti-Al series alloy shaped charge liner, so that the Ti-Al series alloy shaped charge liner can vibrate freely to make a sound; an acoustic sensor (a microphone with a collection frequency of 0-40 kHz) is used for collecting sound, and a data collection card (a collection frequency) is used for collecting the sound>40kHz, acquisition time>10s) conversion, using signal processing software 4Bruel&KjaerPULSE, processing the collected audio signal, performing Fourier transform (FFT), and converting the time domain signal into a frequency domain signal to obtain a frequency spectrum; performing destructive detection on the standard Ti-Al series alloy liner product, wherein detection items comprise tissue and mechanical properties, detecting and confirming that the tissue state of the Ti-Al series alloy liner is qualified, judging that the frequency spectrum of the Ti-Al series alloy liner is a standard frequency spectrum, and determining the number N of characteristic frequencies of a standard component to be 8 and each characteristic frequency as shown in figure 2: f. of1＝2688Hz、f2＝5280Hz、f3＝5968Hz、f4＝10304Hz、f5＝12544Hz、f6＝15664Hz、f7＝17936Hz、f8＝19520Hz。
Then obtaining the frequency spectrum of the Ti-Al series alloy shaped charge liner to be measured: the Ti-Al series alloy shaped charge liner to be detected (the material, the shape and the size are uniform and standard parts) is characterized in that the opening of the Ti-Al series alloy shaped charge liner to be detected faces downwards and is suspended on a support rod 1 in the forward direction, the support rod 1 is made of PVC (polyvinyl chloride) and is 13cm in height, and the top of the support rod 1 is a smooth hemisphere with the diameter of 3 mm; the impact force applying component 2 is composed of an arc slide rail 21 and an impact ball 22, the impact ball 22 is made of brass and has a density of 8.7g/cm3The diameter is 8 mm; selecting an arc-shaped slide rail 21 with the radius of 20cm, and adjusting the height of the arc-shaped slide rail 21 to enable the distance between the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al series alloy shaped charge liner to be 16 mm; releasing the small impact ball 22 at the same height (top end of the slide rail) as that of the standard part test, enabling the small impact ball 22 to slide along the arc-shaped slide rail 21, horizontally flying out from the bottom end, impacting the bottom edge of the Ti-Al series alloy shaped charge liner to be tested, enabling the Ti-Al series alloy shaped charge liner to be tested to freely vibrate and make a sound; an acoustic sensor (a microphone with a collection frequency of 0-40 kHz) is used for collecting sound, and a data collection card (a collection frequency) is used for collecting the sound>40kHz, acquisition time>10s) turnAlternatively, signal processing software 4Bruel is used&And a Kjaer PULSE, which is used for processing the acquired audio signal, performing Fourier transform (FFT) on the processed audio signal, converting the time domain signal into a frequency domain signal and obtaining the frequency spectrum of the Ti-Al alloy liner to be tested, as shown in FIG. 3. As can be seen from fig. 3, the number N of characteristic frequencies in the frequency spectrum of the Ti — Al alloy liner to be measured is 8, the number (N) of characteristic frequencies of the Ti — Al alloy liner to be measured is identical to the standard frequency spectrum (N), and each characteristic frequency f is the same as the standard frequency spectrum (N)1*＝2684Hz、f2*＝5283Hz、f3*＝5965Hz、f4*＝10298Hz、f5*＝12541Hz、f6*＝15657Hz、f7*＝17940Hz、f819515Hz, corresponding to the characteristic frequency (f) in the standard spectrum1、f2、f3...fN) Error of the measurement<0.1 percent, repeatedly testing each test piece for 3 times, knocking different parts each time, and judging that the Ti-Al series alloy shaped charge liner to be tested is qualified, wherein the obtained result is consistent with the result described above, which shows that the structure of the Ti-Al series alloy shaped charge liner to be tested is consistent with that of the standard shaped charge liner.
The Ti-Al alloy liner to be detected in the example 1 is detected by a destructive method, and the result is that the Ti-Al alloy liner to be detected is qualified, which is consistent with the detection result of the method of the invention, and the detection result obtained by the method of the invention has high accuracy.
Example 2
The detection device shown in fig. 1 is adopted to detect the structural consistency of the Ti-Al series alloy liner, and firstly, the standard frequency spectrum of the Ti-Al series alloy liner is determined:
a standard Ti-Al series alloy shaped charge liner (the material is Ti-46Al-1.5V-0.2C (at.%), the height is 8cm, the diameter of the inner side of the head is phi 4mm) is opened downwards and is suspended on a support rod 1 in the positive direction, the support rod 1 is made of PVC (polyvinyl chloride), the height is 13cm, and the top of the support rod 1 is a smooth hemisphere with the diameter of 3 mm; the impact force applying component 2 is composed of an arc slide rail 21 and an impact ball 22, the impact ball 22 is made of brass and has a density of 8.7g/cm3The diameter is 8 mm; selecting an arc-shaped slide rail 21 with the radius of 20cm, and adjusting the height of the arc-shaped slide rail 21 to enable the distance between the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al series alloy shaped charge liner to be 16 mm; will strike the ball 22 from the arcThe top end of the shape slide rail 21 is released, the small impact ball 22 slides along the arc slide rail 21 and flies out horizontally from the bottom end to impact the bottom edge of the standard Ti-Al series alloy shaped charge liner, so that the Ti-Al series alloy shaped charge liner can vibrate freely to make a sound; an acoustic sensor (a microphone with a collection frequency of 0-40 kHz) is used for collecting sound, and a data collection card (a collection frequency) is used for collecting the sound>40kHz, acquisition time>10s) conversion, using signal processing software 4Bruel&KjaerPULSE, processing the collected audio signal, performing Fourier transform (FFT), and converting the time domain signal into a frequency domain signal to obtain a frequency spectrum; performing destructive detection on the standard Ti-Al series alloy liner product, wherein detection items comprise tissue and mechanical properties, detecting and confirming that the tissue state of the Ti-Al series alloy liner is qualified, judging that the frequency spectrum of the Ti-Al series alloy liner is a standard frequency spectrum, and determining the number N of characteristic frequencies of a standard component to be 8 and each characteristic frequency as shown in figure 2: f. of1＝2688Hz、f2＝5280Hz、f3＝5968Hz、f4＝10304Hz、f5＝12544Hz、f6＝15664Hz、f7＝17936Hz、f8＝19520Hz。
Then obtaining the frequency spectrum of the Ti-Al series alloy shaped charge liner to be measured: the method comprises the following steps of (1) enabling an opening of a Ti-Al series alloy shaped charge liner to be tested to face downwards and be suspended on a support rod 1 in a forward direction, wherein the Ti-Al series alloy shaped charge liner to be tested (the material, the shape and the size are uniform, the standard part of the embodiment 1 is consistent), the support rod 1 is made of PVC (polyvinyl chloride) and is 13cm in height, and the top of the support rod 1 is a smooth hemisphere with the diameter of 3 mm; the impact force applying component 2 is composed of an arc slide rail 21 and an impact ball 22, the impact ball 22 is made of brass and has a density of 8.7g/cm3The diameter is 8 mm; selecting an arc-shaped slide rail 21 with the radius of 20cm, and adjusting the height of the arc-shaped slide rail 21 to enable the distance between the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al series alloy shaped charge liner to be 16 mm; releasing the small impact ball 22 at the same height (top end of the slide rail) as that of the standard part test, enabling the small impact ball 22 to slide along the arc-shaped slide rail 21, horizontally flying out from the bottom end, impacting the bottom edge of the Ti-Al series alloy shaped charge liner to be tested, enabling the Ti-Al series alloy shaped charge liner to be tested to freely vibrate and make a sound; an acoustic sensor (a microphone with a collection frequency of 0-40 kHz) is used for collecting sound, and a data collection card (a collection frequency) is used for collecting the sound>40kHz, adoptTime of collection>10s) conversion, using signal processing software 4Bruel&And a Kjaer PULSE, which is used for processing the acquired audio signal, performing Fourier transform (FFT) on the processed audio signal, converting the time domain signal into a frequency domain signal and obtaining the frequency spectrum of the Ti-Al alloy liner to be tested, as shown in FIG. 4.
As can be seen from fig. 4, the number n of characteristic frequencies in the frequency spectrum of the Ti — Al alloy liner to be measured is 9, which is inconsistent with the comparison result of the standard frequency spectrum and lacks the characteristic frequency f2*And 2 more characteristic frequencies than the standard spectrum: f. of9#And f10#And (4) indicating that the structure of the Ti-Al series alloy shaped charge liner to be measured is inconsistent with that of the standard shaped charge liner with the same size, and judging that the Ti-Al series alloy shaped charge liner to be measured is unqualified.
The Ti-Al series alloy shaped charge liner to be detected in the embodiment 2 is detected by a destructive method, the result is that the Ti-Al series alloy shaped charge liner to be detected is judged to be unqualified, and the detection result is consistent with the detection result of the method provided by the invention, which shows that the detection result obtained by the method provided by the invention has high accuracy.
Example 3
The detection device shown in fig. 1 is adopted to detect the structural consistency of the Ti-Al series alloy liner, and firstly, the standard frequency spectrum of the Ti-Al series alloy liner is determined:
a standard Ti-Al series alloy shaped charge liner (the material is Ti-48Al-2Cr-2Mn (at.%), the height is 15cm, the diameter of the inner side of the head is 6mm) is suspended on a support rod 1 in a forward direction, the support rod 1 is made of polyethylene and has a height of 20cm, and the top of the support rod 1 is a smooth hemisphere with a diameter of 5 mm; the impact force applying component 2 is composed of an arc slide rail 21 and an impact small ball 22, the impact small ball 22 is made of tungsten alloy, and the density is 17.6g/cm3The diameter is 5 mm; selecting an arc-shaped slide rail 21 with the radius of 25cm, and adjusting the height of the arc-shaped slide rail 21 to ensure that the distance between the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al series alloy shaped charge liner is 10 mm; releasing the small impact balls 22 from the top ends of the arc-shaped slide rails 21, enabling the small impact balls 22 to slide along the arc-shaped slide rails 21 and fly out horizontally from the bottom ends, and impacting the bottom edges of the standard Ti-Al alloy shaped charge liners to enable the Ti-Al alloy shaped charge liners to vibrate freely and make sounds; an acoustic sensor (microphone, collection frequency 0-40 kHz) is used to collect the sound, and a data collection card (Acquisition frequency>40kHz, acquisition time>10s) conversion, using signal processing software 4Bruel&KjaerPULSE, processing the collected audio signal, performing Fourier transform (FFT), converting the time domain signal into a frequency domain signal, obtaining a standard frequency spectrum of the Ti-Al alloy liner, and obtaining a frequency spectrum; performing destructive detection on the standard Ti-Al series alloy liner product, wherein detection items comprise tissue and mechanical properties, detecting and confirming that the tissue state of the Ti-Al series alloy liner is qualified, judging that the frequency spectrum of the Ti-Al series alloy liner is a standard frequency spectrum, and determining the number N of characteristic frequencies of a standard component to be 18 and each characteristic frequency as shown in figure 5: f. of1＝1248Hz、f2＝2720Hz、f3＝4688Hz、f4＝6288Hz、f5＝7152Hz、f6＝8496Hz、f7＝10832Hz、f8＝11648Hz、f9＝12720Hz、f10＝13856Hz、f11＝14768Hz、f12＝15472Hz、f13＝17024Hz、f14＝17824Hz、f15＝18896Hz、f16＝21024Hz、f17＝22576Hz、f18＝24512Hz。
Then obtaining the frequency spectrum of the Ti-Al series alloy shaped charge liner to be measured: the Ti-Al series alloy liner to be tested (the material, the shape and the size are uniform, the embodiment 1 standard part is consistent, the opening of the Ti-Al series alloy liner to be tested faces downwards, the Ti-Al series alloy liner to be tested is suspended on a support rod 1 in the positive direction, the support rod 1 is made of polyethylene and has the height of 20cm, the top of the support rod 1 is in a smooth hemispherical shape with the diameter of 5mm, an impact force applying part 2 is composed of an arc-shaped slide rail 21 and an impact small ball 22, the impact small ball 22 is made of tungsten alloy, and the density of the impact small ball 22 is 17.6g/3The diameter is 5 mm; selecting an arc-shaped slide rail 21 with the radius of 25cm, and adjusting the height of the arc-shaped slide rail 21 to ensure that the distance between the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al series alloy shaped charge liner to be measured is 10 mm; releasing the impact small ball 22 at the same height as the standard part test, enabling the impact small ball 22 to slide along the arc-shaped slide rail 21, horizontally flying out from the bottom end, impacting the bottom edge of the Ti-Al series alloy shaped charge liner to be tested, and enabling the Ti-Al series alloy shaped charge liner to be tested to freely vibrate and make a sound; an acoustic sensor (microphone, collection frequency 0-40 kHz) is used to collect the sound, and a data collection card (Acquisition frequency>40kHz, acquisition time>10s) conversion, using signal processing software 4Bruel&And a Kjaer PULSE, which is used for processing the acquired audio signal, performing Fourier transform (FFT) on the processed audio signal, converting the time domain signal into a frequency domain signal and obtaining the frequency spectrum of the Ti-Al alloy liner to be tested, as shown in FIG. 6. As can be seen from fig. 6, the number N of characteristic frequencies in the frequency spectrum of the Ti — Al alloy liner to be measured is 18, the number (N) of characteristic frequencies of the Ti — Al alloy liner to be measured is identical to the standard frequency spectrum (N), and each characteristic frequency f is the same as the standard frequency spectrum (N)1*＝1251Hz、f2*＝2718Hz、f3*＝4688Hz、f4*＝6287Hz、f5*＝7155Hz、f6*＝8494Hz、f7*＝10836Hz、f8*＝11645Hz、f9*＝12722Hz、f10*＝13855Hz、f11*＝14762Hz、f12*＝15470Hz、f13*＝17024Hz、f14*＝17821Hz、f15*＝18897Hz、f16*＝21025Hz、f17*＝22576Hz、f182454 Hz and the corresponding characteristic frequency (f) in the standard spectrum1、f2、f3...fN) Error of the measurement<0.1 percent, repeatedly testing each test piece for 3 times, knocking different parts each time, and judging that the Ti-Al series alloy shaped charge liner to be tested is qualified, wherein the obtained result is consistent with the result described above, which shows that the structure of the Ti-Al series alloy shaped charge liner to be tested is consistent with that of the standard shaped charge liner.
The Ti-Al series alloy shaped charge liner to be detected in the embodiment 3 is detected by a destructive method, the result is that the Ti-Al series alloy shaped charge liner to be detected is judged to be qualified, and the detection result is consistent with the detection result of the method provided by the invention, which shows that the detection result obtained by the method provided by the invention has high accuracy.
Example 4
The detection device shown in fig. 1 is adopted to detect the structural consistency of the Ti-Al series alloy liner, and firstly, the standard frequency spectrum of the Ti-Al series alloy liner is determined:
placing a standard Ti-Al alloy shaped charge liner (material: Ti-48Al-2Cr-2Mn (at.%)) with a 15cm height and 6mm diameter inside the head) with its opening facing downwards on a support rod 1, wherein the support rod 1 is made of polyethylene and 20cm in height, and the top of the support rod 1 is made of 5mm diameterA smooth hemisphere shape; the impact force applying component 2 is composed of an arc slide rail 21 and an impact small ball 22, the impact small ball 22 is made of tungsten alloy, and the density is 17.6g/cm3The diameter is 5 mm; selecting an arc-shaped slide rail 21 with the radius of 25cm, and adjusting the height of the arc-shaped slide rail 21 to ensure that the distance between the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al series alloy shaped charge liner is 10 mm; releasing the small impact balls 22 from the top ends of the arc-shaped slide rails 21, enabling the small impact balls 22 to slide along the arc-shaped slide rails 21 and fly out horizontally from the bottom ends, and impacting the bottom edges of the standard Ti-Al alloy shaped charge liners to enable the Ti-Al alloy shaped charge liners to vibrate freely and make sounds; an acoustic sensor (a microphone with a collection frequency of 0-40 kHz) is used for collecting sound, and a data collection card (a collection frequency) is used for collecting the sound>40kHz, acquisition time>10s) conversion, using signal processing software 4Bruel&KjaerPULSE, processing the collected audio signal, performing Fourier transform (FFT), converting the time domain signal into a frequency domain signal, obtaining a standard frequency spectrum of the Ti-Al alloy liner, and obtaining a frequency spectrum; performing destructive detection on the standard Ti-Al series alloy liner product, wherein detection items comprise tissue and mechanical properties, detecting and confirming that the tissue state of the Ti-Al series alloy liner is qualified, judging that the frequency spectrum of the Ti-Al series alloy liner is a standard frequency spectrum, and determining the number N of characteristic frequencies of a standard component to be 18 and each characteristic frequency as shown in figure 5: f. of1＝1248Hz、f2＝2720Hz、f3＝4688Hz、f4＝6288Hz、f5＝7152Hz、f6＝8496Hz、f7＝10832Hz、f8＝11648Hz、f9＝12720Hz、f10＝13856Hz、f11＝14768Hz、f12＝15472Hz、f13＝17024Hz、f14＝17824Hz、f15＝18896Hz、f16＝21024Hz、f17＝22576Hz、f18＝24512Hz。
Obtaining the frequency spectrum of the Ti-Al series alloy shaped charge liner to be measured: the Ti-Al series alloy liner to be tested (the material, the shape and the size are uniform, and the standard part is consistent in the embodiment 3) is characterized in that the opening of the Ti-Al series alloy liner to be tested faces downwards and is suspended on a support rod 1 in the forward direction, the support rod 1 is made of polyethylene and has the height of 20cm, and the top of the support rod 1 is a Ti-Al series alloy liner with the diameter of 5mmA smooth hemisphere shape; the impact force applying component 2 is composed of an arc slide rail 21 and an impact small ball 22, the impact small ball 22 is made of tungsten alloy, and the density is 17.6g/cm3The diameter is 5 mm; selecting an arc-shaped slide rail 21 with the radius of 25cm, and adjusting the height of the arc-shaped slide rail 21 to ensure that the distance between the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al series alloy shaped charge liner to be measured is 10 mm; releasing the impact small ball 22 at the same height as the standard part test, enabling the impact small ball 22 to slide along the arc-shaped slide rail 21, horizontally flying out from the bottom end, impacting the bottom edge of the Ti-Al series alloy shaped charge liner to be tested, and enabling the Ti-Al series alloy shaped charge liner to be tested to freely vibrate and make a sound; an acoustic sensor (a microphone with a collection frequency of 0-40 kHz) is used for collecting sound, and a data collection card (a collection frequency) is used for collecting the sound>40kHz, acquisition time>10s) conversion, using signal processing software 4Bruel&And KjaerPULSE, processing the acquired audio signal, performing Fourier transform (FFT), converting the time domain signal into a frequency domain signal, and obtaining the frequency spectrum of the Ti-Al alloy liner to be tested, as shown in FIG. 7. As can be seen from fig. 7, the number n of characteristic frequencies in the frequency spectrum of the Ti — Al alloy liner to be measured is 16, which is inconsistent with the comparison result of the standard frequency spectrum and lacks the characteristic frequency f2*And f16*And (4) indicating that the structure of the Ti-Al series alloy shaped charge liner to be measured is inconsistent with that of the standard shaped charge liner with the same size, and judging that the Ti-Al series alloy shaped charge liner to be measured is unqualified.
The Ti-Al series alloy shaped charge liner to be detected in the embodiment 4 is detected by a destructive method, the result is that the Ti-Al series alloy shaped charge liner to be detected is judged to be unqualified, and the detection result is consistent with the detection result of the method provided by the invention, which shows that the detection result obtained by the method provided by the invention has high accuracy.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A method for detecting the structural consistency of a Ti-Al alloy liner comprises the following steps:
the device for detecting the tissue consistency of the Ti-Al alloy liner comprises a supporting rod (1), an impact force applying component (2) and an audio signal collecting component (3) which are arranged beside the supporting rod (1) in use, and signal processing software (4) electrically connected with the audio signal collecting component (3); the impact force applying component (2) comprises an arc-shaped slide rail (21) and a small impact ball (22) arranged in the arc-shaped slide rail (21);
placing a Ti-Al series alloy shaped charge liner to be tested on a support rod (1) with an opening facing downwards;
an impact force applying member (2) applies an impact force to the outside of the Ti-Al alloy liner to make the Ti-Al alloy liner generate a sound;
collecting the audio signal of the sound by using an audio signal collecting component (3), and obtaining the frequency spectrum of the Ti-Al alloy liner to be tested through signal processing software (4);
comparing the frequency spectrum of the Ti-Al series alloy shaped charge liner to be detected with a preset standard frequency spectrum, and judging whether the tissues of the Ti-Al series alloy shaped charge liner to be detected are consistent or not;
the method for applying the impact force comprises the following steps: adjusting the height of the arc-shaped slide rail (21) to enable the bottom end of the arc-shaped slide rail (21) and the bottom edge of the Ti-Al series alloy shaped charge liner to be on the same horizontal plane; adjusting the distance between an arc-shaped slide rail (21) and the support rod (1) to enable the distance between the bottom end of the arc-shaped slide rail (21) and the bottom edge of the Ti-Al alloy shaped charge liner to be 2-3 times of the diameter of the impact small ball (22); releasing the impact small ball (22) at the fixed position of the arc-shaped slide rail (21), wherein the impact small ball (22) slides along the arc-shaped slide rail (21) and flies out horizontally from the bottom end of the arc-shaped slide rail (21) to impact the bottom edge of the Ti-Al alloy shaped charge liner to be tested;
the method for judging the tissue consistency of the Ti-Al alloy liner to be detected comprises the following steps:
comparing the number of characteristic frequencies and each characteristic frequency value in the standard frequency spectrum and the frequency spectrum of the Ti-Al series alloy liner to be detected;
if the number of the characteristic frequencies in the frequency spectrum of the Ti-Al series alloy liner to be detected is consistent with the number of the characteristic frequency spectrum in the standard frequency spectrum, and the difference between each characteristic frequency value and the corresponding characteristic frequency value in the standard frequency spectrum is less than 0.1%, the structural consistency of the Ti-Al series alloy liner to be detected is qualified;
and if the number of the characteristic frequencies in the frequency spectrum of the Ti-Al series alloy liner to be detected is not consistent with the number of the characteristic frequency spectrum in the standard frequency spectrum, or the difference between one or more characteristic frequency values and the corresponding characteristic frequency value in the standard frequency spectrum is more than or equal to 0.1%, indicating that the structural consistency of the Ti-Al series alloy liner to be detected is unqualified.
2. The detection method according to claim 1, wherein the height of the support rod (1) is 1.2 to 1.5 times the height of the Ti-Al alloy liner; the top of the support rod (1) is smooth and hemispherical, so that the top of the support rod (1) and the inner side of the head of the Ti-Al alloy shaped charge liner form a point support.
3. The detection method according to claim 1, wherein the height of the arc-shaped slide rail (21) is adjustable, and when in use, the bottom end of the arc-shaped slide rail (21) is on the same horizontal plane with the bottom edge of the Ti-Al alloy shaped charge liner placed on the support rod (1).
4. The detection method according to claim 1 or 3, wherein the arc-shaped slide rail (21) is 1/4 circles, and the radius of the circles is 15-30 cm.
5. The detection method according to claim 1, characterized in that the impact bead (22) is made of metal; the impact bead (22) has a density greater than 7.8g/cm3The diameter is 5-8 mm.
6. The detection method according to claim 1, characterized in that the audio signal acquisition means (3) comprise an acoustic sensor and a data acquisition card.
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