CN100468039C - Testing apparatus and method of data auto-acquiring stretching creep deformation - Google Patents
Testing apparatus and method of data auto-acquiring stretching creep deformation Download PDFInfo
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- CN100468039C CN100468039C CNB2005101083498A CN200510108349A CN100468039C CN 100468039 C CN100468039 C CN 100468039C CN B2005101083498 A CNB2005101083498 A CN B2005101083498A CN 200510108349 A CN200510108349 A CN 200510108349A CN 100468039 C CN100468039 C CN 100468039C
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Abstract
The invention supplies data auto collecting drawing creep measuring device and method. The device includes loading system, environment heating and temperature control system, data auto collecting system. The invention can realize the measuring for various materials high temperature creep performance with different temperature and drawing loading, process auto collecting for the tested material creep performance with litter collecting data error, follows material creep process, connects with computer to directly protract the creep process, and detects the material steady state creep rate in the given experimental condition.
Description
Technical field:
A kind of data auto-acquiring stretching creep deformation proving installation provided by the present invention and method, belong to the material properties test technical field, be applicable to any test of processing solid material, be particularly useful for the test of metal material deformation of creep under different temperatures and tension.
Background technology:
Generally speaking, mechanical property is the very important index of research and evaluation material property, and wherein the high temperature creep property of material is again a very important technical indicator.
Refractory ceramics creep testing machine by Tsing-Hua University's development, application number is: 89107018.4 patent of invention, this creep testing machine is primarily aimed at stupalith, and desired sample of this device and load are bigger, are not suitable for the test of the less microelectronics of hardness and loading stress with material and soldered fitting high temperature creep property.
" a kind of deformation of creep measurement and automatic data collection device " by the development of Shenyang Ltd of aeromotor at dawn group, application number is: 02273979.3, though this device has been realized computer control deformation of creep measurement and automatic data collection, but it only is the measurement to creep strain, does not relate to the creep test process.This device adopts extensometer tensile creep sample, adopts the differential transformer transducer image data, contacts with creep sample because of installing directly, therefore unavoidably can produce some contact errors.
By Mitsubishi Heavy Industry Ltd. application, the patent No. is: 02148207.1 patent of invention, it provides a kind of accuracy method and device of assessing creep rupture.The croop property that this device mainly comes assessment material by the size and the crystal orientation of mensuration metal material crystal grain, mainly be applicable to ferrous materials, this method is not suitable for that hardness is less, the metallographic preparation relatively the microelectronics of difficulty with the assessment of the croop property of material and soldered fitting.
Summary of the invention:
For overcome exist in the prior art can not be less to hardness, the metallographic preparation relatively the microelectronics of difficulty with the deficiency of the assessment of the croop property of material and soldered fitting, the invention provides more accurate data auto-acquiring stretching creep deformation proving installation of a kind of measurement and method, its purpose is the deformation of creep of test material is gathered automatically, the material creep process is followed the tracks of, and link to each other with computing machine, directly draw deformation of creep process, the steady state creep strain rate of simultaneously measurable material under deciding test condition.It can realize the mensuration of any material high temperature creep property under different temperatures and tensile load.
In order to realize the foregoing invention purpose, the present invention adopts following technical scheme:
The invention provides a kind of data auto-acquiring stretching creep deformation proving installation, it comprises:
Be used for creep sample is fixed the loading system that reaches loaded load; Be used for the creep sample ambient temperature is heated and heating of the environment controlled and temperature control system; Be used to gather the creep signal data of creep sample and to the automatic data acquisition system that the creep signal data is handled, it is characterized in that: described loading system comprises the loading support that is used to hang creep sample and load and the creep sample mechanism that is installed; Described environment heating and temperature control system are made of power supply, heating element and temperature controller, and power supply connects by the temperature controller heating element, and this heating element is for placing creep sample the annular tubular heating element in it; Described automatic data acquisition system comprises the computing machine of displacement transducer, amplifilter and installation A/D converter, and this displacement transducer is fixed in the following side space of creep sample the creeping displacement of creep sample is measured and be connected with computing machine by amplifilter.
Described data auto-acquiring stretching creep deformation device, described displacement transducer are grating displacement sensor.
Described data auto-acquiring stretching creep deformation device when test during tiny sample, is provided with reverberator and optical grid line displacement sensor is used.
Described data auto-acquiring stretching creep deformation device, described grating sensor do not contact creep sample when displacement is carried out data acquisition.
Described data auto-acquiring stretching creep deformation device is characterized in that described temperature controller comprises thermopair, and the other end of thermopair is popped one's head in to be placed in the heating element, can link to each other with creep sample, or as far as possible near creep sample.
Described data auto-acquiring stretching creep deformation device, the data line two ends plug that connects A/D converter and amplifilter output terminal all prevents the noise jamming processing.
Described data auto-acquiring stretching creep deformation device, described amplifilter is connected with computing machine by data line, carries out data transmission by ISDN between amplifilter and the computing machine.
The method that described data auto-acquiring stretching creep deformation device is tested is as follows:
A, creep sample dangled to be fixed in to load on the support, and is placed in the annular tubular heating element;
B, to the creep sample loaded load, open heating element the creep sample surrounding environment heated;
C, place in the heating element by probe and to link to each other with creep sample or, temperature controller is control effectively to the temperature of creep sample surrounding environment as far as possible near creep sample with its thermopair;
D, displacement controller is fixed in the following side space of creep sample, after the creeping displacement signal of creep sample gathered, send into amplifilter, be converted to simulating signal, this simulating signal is sent in the computing machine that A/D converter is housed by ISDN handled again.
In sum, data auto-acquiring stretching creep deformation method of testing provided by the present invention and device, can overcome exist in the prior art can not be less to hardness, metallographic prepares the deficiency of difficult relatively microelectronics with the assessment of the croop property of material and soldered fitting, can realize the mensuration of any material high temperature creep property under different temperatures and tensile load, the deformation of creep to test material is gathered automatically, the material creep process is followed the tracks of, and link to each other with computing machine, directly draw deformation of creep process, the steady state creep strain rate of simultaneously measurable material under deciding test condition is for research and assessment material croop property and reliability provide strong foundation.In addition, among the present invention to load and surrounding environment may command that creep sample loaded, but variable load is repeatedly measured to the creep sample alternating temperature, can realize the mensuration of the deformation of creep of any solid machinable material under the different temperatures different loads.
Description of drawings:
Fig. 1: data auto-acquiring stretching creep deformation proving installation synoptic diagram;
Fig. 2: loading system synoptic diagram;
Fig. 3: environment heating and temperature control system synoptic diagram;
Fig. 4: data acquisition synoptic diagram;
Fig. 5: data acquisition flow figure;
Fig. 6: one-piece construction synoptic diagram.
Embodiment:
Data auto-acquiring stretching creep deformation proving installation of the present invention mainly is made of following three parts: loading system, environment heating and temperature control system and automatic data acquisition system.
Fig. 1 is the synoptic diagram of this data auto-acquiring stretching creep deformation proving installation.The course of work of measuring the material creep distortion is as follows: be fixed on creep sample on the loading system and apply test load, start environment heating and temperature control system then, make environment temperature reach preset temperature, the log-on data acquisition system can be measured the deformation of creep of material under this test condition.
With reference to Fig. 6, data auto-acquiring stretching creep deformation proving installation of the present invention comprises: be used for creep sample is fixed the loading system that reaches loaded load; Be used for the creep sample ambient temperature is heated and heating of the environment controlled and temperature control system; Be used to gather the creep signal data of creep sample and the automatic data acquisition system that the creep signal data is handled.
Described loading system comprises and loads support 1, load 4 and the creep sample mechanism 9 that is installed.
Described environment heating and temperature control system are made of power supply 10, heating element 2 and temperature controller 7, and wherein power supply 10 is connected with heating element 2 by temperature controller 7.
Described heating element 2 is for can place creep sample 3 annular in it, the heating element of tubular.
Described temperature controller 7 comprises thermopair 8, and the other end of thermopair is popped one's head in to place in the heating element 2 to link to each other or as far as possible close creep sample 3 with creep sample 3.
Described automatic data acquisition system comprises displacement transducer 5, amplifilter 6 and computing machine 11 formations of A/D converter is installed that wherein displacement transducer 5 is connected with computing machine 11 by amplifilter 6.
Described displacement transducer 5 is fixed in a position of 3 times side spaces of creep sample, so that the creeping displacement of creep sample 3 is measured, produces the creeping displacement signal.
Described amplifilter 6 is connected with computing machine 11 by data line, carries out data transmission by ISDN between amplifilter 6 and the computing machine 11.
The present invention also provides a kind of data auto-acquiring stretching creep deformation method of testing, and is as follows:
A, creep sample 3 dangled to be fixed in to load on the support 1, and is placed in the heating element 2 of an annular tubular;
B, to creep sample 3 loaded load 4, open 2 pairs of creep sample 3 surrounding environment of heating element and heat;
C, place in the heating element 2 by probe and to link to each other or as far as possible close creep sample 3, the temperature of 7 pairs of creep sample 3 surrounding environment of temperature controller is control effectively with creep sample 3 with its thermopair 8;
D, displacement controller 5 is fixed in the following side space of creep sample 3, creeping displacement amount to creep sample 3 is gathered, produce the creeping displacement signal, send into amplifilter 6, be converted to simulating signal, this simulating signal sent in the computing machine 11 that A/D converter is housed by ISDN handled again.
Fig. 2 is the synoptic diagram of loading system, and as shown in Figure 2, loading system comprises and loads support 1, load 4 and the creep sample mechanism 9 that is installed, and loads support 1 and mainly works to hang creep sample 3 and load 4, and general requirement has favorable rigidity.Load 4 can be set (the platform balance sliding weight of steelyard is adopted in this test) according to test situation.The mechanism 9 that is installed can adopt general triangle or hexagonal chuck, also can adopt other forms, and this test adopts punching to hang.
Figure 3 shows that environment heating and temperature control system synoptic diagram, structure as shown in Figure 3, environment heating and temperature control system are made of power supply 10, heating element 2 and temperature controller 7, temperature controller 7 places in the heating element 2 by the probe with thermopair 8, so that the ambient temperature of creep sample 3 is controlled.Power supply 10 can adopt the general lighting power supply, and heating element 2 adopts commercially available annular heating element, selects the heating element of annular tubular here for use, and creep sample 3 is placed in it; Also can adopt other heat forms.Its heating is by XMTE series digital display temperature controller and the control of nickel chromium-nickel silicon thermocouple temperature controller, and this system is mainly creep test temperature conditions is provided.
In the one-piece construction synoptic diagram shown in Figure 6, automatic data acquisition system comprises displacement transducer 5, the present invention can adopt optical grid line displacement sensor (RLS-6), amplifilter 6 (B10000) and computing machine 11 formations that A/D converter (AD1674) is installed, amplifilter 6 is connected in computing machine 11 by data line, and amplifilter 6 carries out data transmission with computing machine 11 by ISDN.
When test during tiny sample, can reverberator be set and optical grid line displacement sensor is used, with the creeping displacement amount of the small creep sample of accurate test.
The data acquisition synoptic diagram as shown in Figure 4, creep sample 3 is heated, after its creeping displacement amount is gathered by displacement transducer 5, produce the creeping displacement signal, this creeping displacement signal is amplified and filtering, be converted to simulating signal, i.e. electric signal, be converted to computing machine 11 accessible digital signals through A/D converter again, by the software of computing machine 11 this digital signal handled again.
By software programming, can realize automatic data collection.
Data acquisition is finished jointly by displacement transducer 5, amplifilter 6 and A/D converter.Displacement transducer 5 and amplifilter 6 actings in conjunction, the creeping displacement conversion of signals is become a kind of simulating signal, it is electric signal, this electric signal is sent into A/D converter by the DB25 core plug, A/D converter is converted to the digital signal that computing machine can be handled and discern to simulating signal (electric signal) under computer control.Data acquisition flow is sent into input channel number to A/D converter as shown in Figure 5,20 microseconds of delaying time (can wake up with a start an A/D conversion), start A/D converter and carry out the A/D conversion, judge then whether the A/D conversion is finished, if, sampling is finished, and then computing machine will be handled sampled result; If not, proceed the A/D conversion.
It should be noted that the data line two ends plug that connects A/D converter and amplifilter 6 output terminals all will prevent the noise jamming processing.Data acquisition system (DAS) after handling will be imported the simulating signal of amplifilter 6 outputs into A/D converter, and A/D converter is converted into the digital signal that computing machine 11 can be discerned and handle with simulating signal.
The signal of these digital signals and displacement transducer 5 is corresponding one by one, but also inconsistent, therefore need accurately demarcate system.Demarcate the general simple regression analysis method that adopts.Can obtain the unary linear relation of displacement and data presentation like this.Pass through certain procedure again, be easy to obtain creeping displacement amount and time relation, steady state creep strain rate and time relation.
From the above mentioned, data auto-acquiring stretching creep deformation proving installation provided by the present invention and method, can overcome exist in the prior art can not be less to hardness, metallographic prepares the problems such as deficiency of difficult relatively microelectronics with the assessment of the croop property of material and soldered fitting, can realize the mensuration of any material high temperature creep property under different temperatures and tensile load, the deformation of creep to test material is gathered automatically, the material creep process is followed the tracks of, and link to each other with computing machine, directly draw creep process, the steady state creep strain rate of simultaneously measurable material under deciding test condition is for research and assessment material croop property and reliability provide reliably strong foundation.
In addition, different is load and the ambient temperature may command that creep sample is loaded for the present invention and other technologies, but variable load is repeatedly measured to the creep sample alternating temperature; Do not contact creep sample when with optical grid line displacement sensor displacement being carried out data acquisition, it is littler therefore to use data acquisition error of the present invention, and test result is more accurate.
By the description of the drawings and corresponding specific embodiment the present invention is described as mentioned above.But be understood that, wherein in an embodiment about the description of the configuration of the size of creep sample, material type, componentry and positioned opposite and do not mean that and limit the invention to particular forms disclosed, this programme only is open in the mode of example, unless otherwise specified.
Claims (8)
1, a kind of data auto-acquiring stretching creep deformation device comprises being used for creep sample (3) is fixed the loading system that reaches loaded load (4); Be used for creep sample (3) ambient temperature is heated and heating of the environment controlled and temperature control system; Be used to gather the creep signal data of creep sample (3) and the automatic data acquisition system that the creep signal data is handled, this device is characterised in that: described loading system comprises the loading support (1) that is used to hang creep sample (3) and load (4) and the creep sample mechanism (9) that is installed; Described environment heating and temperature control system are made of power supply (10), heating element (2) and temperature controller (7), power supply (10) is connected with heating element (2) by temperature controller (7), and this heating element (2) is for placing creep sample (3) the annular tubular heating element in it; Described automatic data acquisition system comprises displacement transducer (5), amplifilter (6) and the computing machine (11) of A/D converter is installed that this displacement transducer (5) is fixed in the following side space of creep sample (3) the creeping displacement of creep sample is measured and be connected with computing machine (11) by amplifilter (6).
2, data auto-acquiring stretching creep deformation device according to claim 1 is characterized in that described displacement transducer (5) is an optical grid line displacement sensor.
3, data auto-acquiring stretching creep deformation device according to claim 2 is characterized in that when test during tiny sample, reverberator is set and optical grid line displacement sensor is used.
4,, it is characterized in that described optical grid line displacement sensor does not contact creep sample when displacement is carried out data acquisition according to claim 2 or 3 described data auto-acquiring stretching creep deformation devices.
5, according to the arbitrary described data auto-acquiring stretching creep deformation device of claim 1～3, it is characterized in that described temperature controller (7) comprises thermopair (8), the other end probe of thermopair (8) is placed in the heating element (2), link to each other with creep sample (3), or as far as possible near creep sample (3).
6,, it is characterized in that the data line two ends plug that connects A/D converter and amplifilter (6) output terminal all prevents the noise jamming processing according to the arbitrary described data auto-acquiring stretching creep deformation device of claim 1～3.
7, according to the arbitrary described data auto-acquiring stretching creep deformation device of claim 1～3, it is characterized in that described amplifilter (6) is connected with computing machine (11) by data line, carries out data transmission by ISDN between amplifilter (6) and the computing machine (11).
8, a kind of method of utilizing the arbitrary described data auto-acquiring stretching creep deformation device of claim 1～7 to test is characterized in that:
A, creep sample (3) dangled to be fixed in to load on the support (1), and is placed in the annular tubular heating element (2);
B, to creep sample (3) loaded load (4), open heating element (2) creep sample (3) surrounding environment heated.
C, place in the heating element (2) by probe and to link to each other or the close creep sample (3) of trying one's best, temperature controller (7) is control effectively to the temperature of creep sample (3) surrounding environment with creep sample (3) with its thermopair (8);
D, displacement controller (5) is fixed in the following side space of creep sample (3), after the creeping displacement signal of creep sample (3) gathered, send into amplifilter (6), be converted to simulating signal, this simulating signal sent in the computing machine (11) that A/D converter is housed by ISDN handled again.
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| CNB2005101083498A CN100468039C (en) | 2005-10-13 | 2005-10-13 | Testing apparatus and method of data auto-acquiring stretching creep deformation |
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| CNB2005101083498A CN100468039C (en) | 2005-10-13 | 2005-10-13 | Testing apparatus and method of data auto-acquiring stretching creep deformation |
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| CN100468039C true CN100468039C (en) | 2009-03-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101299011B (en) * | 2007-04-30 | 2010-09-22 | 浙江建设职业技术学院 | Air pressure creep deformation tester |
| CN106168756A (en) * | 2009-05-01 | 2016-11-30 | Ta仪器-沃特斯有限责任公司 | The feedback controller parameter with STABILITY MONITORING generates |
| CN101762427B (en) * | 2009-05-25 | 2012-04-04 | 河南科技大学 | High field high-temperature compression test device and method of solid materials |
| CN101876610B (en) * | 2009-12-17 | 2012-03-14 | 北汽福田汽车股份有限公司 | Creep deformation detection method of carrier bar |
| FR2962568B1 (en) * | 2010-07-09 | 2012-08-17 | Renault Sa | PROCESS FOR CONTROLLING THE QUALITY OF A WELD |
| CN102435225A (en) * | 2010-09-29 | 2012-05-02 | 西安市联智电子科技有限公司 | Memory alloy data-acquiring measurement apparatus |
| CN108931440A (en) * | 2017-05-27 | 2018-12-04 | 核工业西南物理研究院 | A kind of small sample is uniaxially stretched creep test fixture |
| CN108489821A (en) * | 2018-02-28 | 2018-09-04 | 中国空间技术研究院 | A kind of device for axial lead tensile test |
| CN114252342A (en) * | 2021-12-20 | 2022-03-29 | 南通神龙化纤绳业有限公司 | High-modulus polyethylene fiber constant load creep testing device and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5187987A (en) * | 1991-11-19 | 1993-02-23 | The Pennsylvania Research Corporation | Bending beam creep test device with piston having a gas bearing |
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2005
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5187987A (en) * | 1991-11-19 | 1993-02-23 | The Pennsylvania Research Corporation | Bending beam creep test device with piston having a gas bearing |
Non-Patent Citations (2)
| Title |
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| 金属力学性能. 束德林，198，机械工业出版社. 2001 |
| 金属力学性能. 束德林，198，机械工业出版社. 2001 * |
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Inventor after: Yan Yanfu Inventor after: Zhao Changwei Inventor after: Zhang Yanmin Inventor after: Liu Shuying Inventor after: Zhang Xin Inventor after: Zhao Peifeng Inventor after: Zhang Wentong Inventor after: Zhang Keke Inventor after: Yu Hua Inventor after: Yan Hongxing Inventor before: Yan Yanfu Inventor before: Zhang Wentong Inventor before: Zhang Keke Inventor before: Yu Hua Inventor before: Yan Hongxing Inventor before: Zhao Changwei |
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Free format text: CORRECT: INVENTOR; FROM: YAN YANFU ZHANG WENTONG ZHANG KEKE YU HUA YAN HONGXING ZHAO ZHANGWEI TO: YAN YANFU ZHANG YANMIN LIU SHUYING ZHANG XIN ZHAO PEIFENG ZHANG WENTONG ZHANG KEKE YU HUA YAN HONGXING ZHAO ZHANGWEI |
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Granted publication date: 20090311 Termination date: 20101013 |