CN217359733U - Film cantilever beam material dynamic behavior test equipment - Google Patents
Film cantilever beam material dynamic behavior test equipment Download PDFInfo
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- CN217359733U CN217359733U CN202122881747.0U CN202122881747U CN217359733U CN 217359733 U CN217359733 U CN 217359733U CN 202122881747 U CN202122881747 U CN 202122881747U CN 217359733 U CN217359733 U CN 217359733U
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Abstract
The utility model provides a dynamic performance test device for thin film cantilever beam materials, which comprises a test board, wherein two support plates are vertically arranged on the test board, a bidirectional threaded rod is rotatably arranged between the upper parts of the two support plates, two ends of the bidirectional threaded rod are respectively matched with a sleeve to be provided with a clamping plate, and two clamping plates are slidably sleeved on a guide slide bar; a tested sample plate is clamped between the rubber plates at the lower parts of the two clamping plates, and the lower end of the tested sample plate is clamped by the counterweight component; an excitation signal generating device and a vibration signal detecting device which are distributed on two sides of the sample plate to be detected are respectively arranged between the two support plates on the test platform through supports, and a data processing device connected with output ends of the excitation signal generating device and the vibration signal detecting device is arranged at one end of the test platform. The resonance method is adopted for testing, so that high-frequency testing can be realized even for materials with very low rigidity, such as ultrathin films; can accomplish fast and be surveyed getting of model and put, easy dismounting is convenient for keep being surveyed the good expansion state of model under the cooperation of magnet and iron plate, convenient test.
Description
Technical Field
The utility model relates to a macromolecular material's viscoelastic properties testing arrangement especially relates to a film cantilever beam material dynamic behavior test equipment.
Background
The polymer material is also called a polymer material, and is a material composed of a polymer compound as a matrix and other additives (auxiliaries). The polymer materials are classified into natural polymer materials and synthetic polymer materials according to the source.
Natural polymers are high molecular substances existing in animals, plants and living bodies, and can be classified into natural fibers, natural resins, natural rubbers, animal gums, and the like. The synthetic polymer material mainly refers to three synthetic materials of plastic, synthetic rubber and synthetic fiber, and also comprises adhesive, paint and various functional polymer materials. The synthetic polymer material has the properties which are not possessed by natural polymer materials or are superior, namely, lower density, higher mechanics, wear resistance, corrosion resistance, electrical insulation and the like.
There are many methods for testing the viscoelastic properties of materials, especially polymeric materials. Dynamic thermomechanical analyzers for solid materials and rheometers for use in the case of melts and the like are currently in widespread use. Dynamic thermomechanical analyzers and rheometers typically involve clamping a test object to a corresponding fixture, and then applying a dynamic excitation signal (e.g., a sinusoidal force signal) to the sample, whereupon the test sample vibrates under the influence of the dynamic force signal. The instrument detects the dynamic force and the dynamic displacement in the test process, and calculates various viscoelastic parameters of the material according to the two signals.
Dynamic thermomechanical analysis and rheological testing belong to testing means developed by forced vibration, and can obtain better testing results within the measuring range of a machine. But is limited by the instrument and the material being tested and tends to have a relatively large limit on the frequency range tested. The measuring frequency range of the dynamic thermomechanical analysis instrument is within 200Hz, but the measuring frequency range is limited by material properties, and higher frequency is difficult to achieve. Especially for thin film materials, only low-frequency vibration within 20Hz or even 10Hz can be tested, and data with higher frequency is difficult to obtain.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a film cantilever beam material dynamic behavior test equipment solves the restricted problem of macromolecular material's viscoelastic behavior test frequency.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the dynamic performance testing equipment for the thin film cantilever beam material comprises a testing table, wherein two parallel supporting plates are vertically arranged on the testing table, a bidirectional threaded rod is rotatably arranged between the upper parts of the two supporting plates, two ends of the bidirectional threaded rod are respectively matched and sleeved with a clamping plate, a guide sliding rod parallel to the bidirectional threaded rod is fixed between the tops of the two supporting plates, and the two clamping plates are slidably sleeved on the guide sliding rod; a layer of rubber plate is respectively stuck on the opposite surfaces of the lower parts of the two clamping plates, a tested sample is clamped between the two rubber plates, and the lower end of the tested sample is clamped by a balance weight assembly; an excitation signal generating device and a vibration signal detecting device which are distributed on two sides of a tested sample are respectively arranged between the two support plates on the test platform through a support, and a data processing device connected with output ends of the excitation signal generating device and the vibration signal detecting device is arranged at one end of the test platform.
Preferably, two ends of the bidirectional threaded rod are rotatably mounted on the two support plates through bearing seats respectively, one end of the bidirectional threaded rod penetrates through the support plates and is connected to the output end of the driving motor, and the driving motor is mounted on the outer sides of the support plates through the support plates.
Preferably, a guide hole for the guide sliding rod to pass through and a threaded hole in threaded fit with the bidirectional threaded rod are reserved on the clamping plate.
Preferably, the counterweight component comprises a magnet and an iron plate with the same size as the magnet, and the clamping surfaces of the magnet and the iron plate are respectively adhered with an anti-skid layer.
Preferably, the width of the magnet and the iron plate is larger than that of the tested sample.
Preferably, the width of the clamping plate and the rubber plate is larger than that of the tested sample.
Preferably, the excitation signal generating device is a sound generator, an electromagnetic vibration generator or a force hammer.
Preferably, the vibration signal detection device is one of a plurality of non-contact amplitude measuring devices such as a laser and a visible light.
Preferably, the vibration signal detection devices can be provided with two groups, and are respectively arranged on two sides of the sample to be detected.
Preferably, the data processing device is an industrial personal computer.
Compared with the prior art, the technical scheme of the utility model following beneficial effect has:
1. the utility model provides a film cantilever beam material dynamic behavior test equipment adopts the resonance method test, even can also realize the test of high frequency to the very low material of this type of rigidity of ultrathin film. The resonance frequency of the material can be conveniently adjusted by adjusting the shape of the tested sample, the test of high frequency and multiple frequency points is realized, the range of the testable frequency is expanded from below 20Hz to 100Hz or even higher, and the viscoelasticity parameter can be effectively close to the viscoelasticity parameter under the actual application condition.
2. The utility model discloses utilize two splint synchronous motion of two-way screw drive, can accomplish fast and be surveyed getting of sample and put, easy dismounting carries out the centre gripping to being surveyed the sample lower extreme under the cooperation of magnet and iron plate, is convenient for keep being surveyed the good expansion state of sample, convenient test.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of the structure of the splint of the present invention.
Illustration of the drawings:
1. a test bench; 2. a support plate; 3. a bidirectional threaded rod; 4. a splint; 5. a guide slide bar; 6. a rubber plate; 7. a sample to be tested; 8. a bearing seat; 9. a drive motor; 10. a support plate; 11. a guide hole; 12. a threaded hole; 13. a magnet; 14. an iron plate; 15. a support; 16. an excitation signal generating device; 17. a vibration signal detection device; 18. a data processing apparatus.
Detailed Description
The utility model provides a film cantilever beam material dynamic behavior test equipment, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, and it is right that the following reference drawing and example are lifted the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order, it being understood that the data so used may be interchanged under appropriate circumstances. Furthermore, the terms "comprises" and "comprising," as well as any variations thereof, are intended to cover a non-exclusive inclusion, such that a system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or apparatus.
The dynamic performance testing equipment for the thin film cantilever beam material comprises a testing platform 1, wherein two parallel supporting plates 2 are vertically arranged on the testing platform 1, a bidirectional threaded rod 3 is rotatably arranged between the upper parts of the two supporting plates 2, two ends of the bidirectional threaded rod 3 are respectively matched and sleeved with a clamping plate 4, a guide sliding rod 5 parallel to the bidirectional threaded rod 3 is fixed between the tops of the two supporting plates 2, and the two clamping plates 4 are slidably sleeved on the guide sliding rod 5; a layer of rubber plate 6 is respectively adhered to the opposite surfaces of the lower parts of the two clamping plates 4, a tested sample 7 is clamped between the two rubber plates 6, and the lower end of the tested sample 7 is clamped by a counterweight component; an excitation signal generating device 16 and a vibration signal detecting device 17 which are distributed on two sides of the tested sample 7 are respectively arranged between the two support plates 2 on the test platform 1 through a support 15, and a data processing device 18 which is connected with the output ends of the excitation signal generating device 16 and the vibration signal detecting device 17 is arranged at one end of the test platform 1.
Furthermore, two ends of the bidirectional threaded rod 3 are rotatably mounted on the two support plates 2 through bearing seats 8 respectively, one end of the bidirectional threaded rod 3 penetrates through the support plate 2 and is connected to an output end of a driving motor 9, and the driving motor 9 is mounted on the outer side of the support plate 2 through a support plate 10.
Furthermore, a guide hole 11 for the guide sliding rod 5 to pass through and a threaded hole 12 matched with the two-way threaded rod 3 in a threaded manner are reserved on the clamping plate 4.
Further, the counterweight component comprises a magnet 13 and an iron plate 14 with the same size as the magnet 13, and a layer of anti-slip layer is respectively adhered on the clamping surfaces of the magnet 13 and the iron plate 14.
Further, the width of the magnet 13 and the iron plate 14 is larger than that of the sample 7 to be measured.
Further, the width of the clamping plate 4 and the rubber plate 6 is larger than that of the tested sample 7.
Further, the excitation signal generating device 16 is an acoustic wave generator, an electromagnetic vibration generator, or a force hammer.
Further, the vibration signal detection device 17 is one of a plurality of non-contact amplitude measuring devices such as laser and visible light.
Further, the vibration signal detection devices 17 may be provided in two groups, and are respectively disposed on two sides of the sample 7 to be detected.
Further, the data processing device 18 is an industrial personal computer.
The working principle is as follows:
during testing, a tested sample 7 is placed between the two clamping plates 4, the driving motor 9 (a forward and reverse rotating motor) is started to drive the two-way screw 3 to rotate, so that the two clamping plates 4 are driven to approach each other, and the two rubber plates 6 are utilized to clamp the tested sample 7; and then the magnet 13 and the iron plate 14 are magnetically clamped at the tail end of the sample 7 to be measured, so that the sample 7 to be measured is kept in a good flattening state.
The excitation signal generating device 16 sends out excitation signals with different frequencies, the vibration signal detecting device 17 detects the amplitude generated by the tested sample 7 and sends data to the data processing device 18, and the data processing device 18 obtains a sample vibration mode curve after frequency band scanning, so that the resonance frequencies and the related damping of different modes of the sample are obtained.
The resonance method is adopted for testing, and high-frequency testing can be realized even for materials with low rigidity, such as ultrathin films. In the DMA test, the first-order resonance frequency point of the material is often the upper limit of the frequency which can be tested, and is generally within 10 Hz; in the resonance method, the resonance frequency point is the effective data point, and the second, third or even higher order resonance frequency points can multiply the upper frequency limit of the effective data point. The resonance frequency of the material can be conveniently adjusted by adjusting the shape of the tested sample 7, the test of high frequency and multiple frequency points is realized, the range of the tested frequency is expanded from below 20Hz to 100Hz or even higher, and the viscoelastic parameter can be effectively close to the viscoelastic parameter under the actual application condition.
The present invention has been described in detail with reference to the specific embodiments, but the present invention is only by way of example and is not limited to the specific embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are intended to be within the scope of the present invention. Accordingly, variations and modifications in equivalents may be made without departing from the spirit and scope of the invention, which is intended to be covered by the following claims.
Claims (10)
1. The dynamic performance testing equipment for the thin film cantilever beam material is characterized by comprising a testing platform (1), wherein two parallel supporting plates (2) are vertically arranged on the testing platform (1), a bidirectional threaded rod (3) is rotatably arranged between the upper parts of the two supporting plates (2), two ends of the bidirectional threaded rod (3) are respectively matched and sleeved with a clamping plate (4), a guide sliding rod (5) parallel to the bidirectional threaded rod (3) is fixed between the tops of the two supporting plates (2), and the two clamping plates (4) are slidably sleeved on the guide sliding rod (5); a layer of rubber plate (6) is respectively adhered to the opposite surfaces of the lower parts of the two clamping plates (4), a tested sample (7) is clamped between the two rubber plates (6), and the lower end of the tested sample (7) is clamped by a balance weight assembly; an excitation signal generating device (16) and a vibration signal detecting device (17) which are distributed on two sides of a tested sample (7) are respectively arranged between the two support plates (2) on the test bench (1) through a support (15), and a data processing device (18) connected with output ends of the excitation signal generating device (16) and the vibration signal detecting device (17) is arranged at one end of the test bench (1).
2. The apparatus of claim 1, wherein: two ends of the bidirectional threaded rod (3) are rotatably installed on the two support plates (2) through bearing seats (8) respectively, one end of the bidirectional threaded rod (3) penetrates through the support plates (2) to be connected to the output end of a driving motor (9), and the driving motor (9) is installed on the outer sides of the support plates (2) through support plates (10).
3. The apparatus of claim 1, wherein: a guide hole (11) for the guide sliding rod (5) to pass through and a threaded hole (12) in threaded fit with the bidirectional threaded rod (3) are reserved on the clamping plate (4).
4. The apparatus of claim 1, wherein: the counterweight component comprises a magnet (13) and an iron plate (14) with the same size as the magnet (13), and the clamping surfaces of the magnet (13) and the iron plate (14) are respectively stuck with an anti-slip layer.
5. The apparatus of claim 4, wherein the apparatus comprises: the width of the magnet (13) and the iron plate (14) is larger than that of the tested sample (7).
6. The apparatus of claim 1, wherein: the widths of the clamping plate (4) and the rubber plate (6) are larger than the width of the tested sample (7).
7. The apparatus of claim 1, wherein the apparatus comprises: the excitation signal generating device (16) is a sound wave generator, an electromagnetic vibration generator or a force hammer.
8. The apparatus of claim 1, wherein: the vibration signal detection device (17) is one of a plurality of non-contact type amplitude measurement devices such as laser, visible light and the like.
9. The apparatus of claim 1, wherein the apparatus comprises: the vibration signal detection devices (17) can be provided with two groups and are respectively arranged at two sides of the tested sample (7).
10. The apparatus of claim 1, wherein: the data processing device (18) is an industrial personal computer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121770014 | 2021-07-30 | ||
| CN2021217700143 | 2021-07-30 |
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| Publication Number | Publication Date |
|---|---|
| CN217359733U true CN217359733U (en) | 2022-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122881747.0U Active CN217359733U (en) | 2021-07-30 | 2021-11-22 | Film cantilever beam material dynamic behavior test equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117269323A (en) * | 2023-11-23 | 2023-12-22 | 吉林大学 | Micro-resonance type mass sensor for magnetic suspended matters in liquid and detection method |
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2021
- 2021-11-22 CN CN202122881747.0U patent/CN217359733U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117269323A (en) * | 2023-11-23 | 2023-12-22 | 吉林大学 | Micro-resonance type mass sensor for magnetic suspended matters in liquid and detection method |
| CN117269323B (en) * | 2023-11-23 | 2024-02-13 | 吉林大学 | Micro-resonance type mass sensor for magnetic suspended matters in liquid and detection method |
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