CN204789488U - A sample fixing device for measuring material elasticity performance - Google Patents
A sample fixing device for measuring material elasticity performance Download PDFInfo
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- CN204789488U CN204789488U CN201520392701.4U CN201520392701U CN204789488U CN 204789488 U CN204789488 U CN 204789488U CN 201520392701 U CN201520392701 U CN 201520392701U CN 204789488 U CN204789488 U CN 204789488U
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Abstract
The utility model relates to a sample fixing device for measuring material elasticity performance, include: a pedestal, the upper surface of base is equipped with a recess, the recess is enclosed by lateral wall and bottom surface, a plurality of silk threads, relative two are followed respectively to a plurality of silk threads the lateral wall passes or passes through from the top of two relative lateral walls, at least two hang the weight body, every the silk thread with at least two hang to weigh down in the body wherein two be in respectively the external fixation of recess, it passes through to hang the weight body the fiber suspension is in the outside of recess, hang and weigh down the body through self gravity messenger the silk thread keeps the tensioning state, wherein, await measuring the setting of sample level at least two on the silk thread. The utility model relates to a sample fixing device for measuring material elasticity performance make await measuring the sample not can because of the deformation of silk thread and drop or drop, thus it is reliable and stable.
Description
Technical field
The utility model relates to a kind of field of material technology, particularly relates to a kind of sample fixing device for measuring elastic properties of materials performance.
Background technology
Elastic performance mainly refers to the physical quantity of material in regime of elastic deformation, comprise elastic modulus (E, also referred to as Young modulus), shear modulus (G) and Poisson ratio (v), its Elastic Modulus and shear modulus are the important mechanics parameters characterizing solid material elastic property, reflect the ability that solid material opposing external force produces deformation.The assay method of elasticity modulus of materials, is generally divided into static method and dynamic method.Static method is applicable to measure test button usually under large deformation and normal temperature, it is slow and with relaxation process that static method measures large, the loading velocity of load, inapplicable to hard brittle material (as graphite, glass, pottery etc.), can not measure at high operating temperatures; Dynamic method is Non-Destructive Testing, the elastic modulus of material can be measured rapidly and accurately when ensureing that material is injury-free, be applicable to the measurement of various metal and nonmetal (fragility) material, the temperature range of mensuration is extremely wide, can from about liquid nitrogen temperature to 3000 DEG C.Dynamic method is a kind of widely used method in the world.
The stationary installation of measurement elastic properties of materials performance of the prior art is by nylon or wire rope is stretching is bundled in fixed position, is then lain in a horizontal plane on nylon or wire rope by sample to be tested.Because nylon rope is flexible, can bend when being subject to the pressure of sample to be tested, and wire rope there will be softening phenomenon when at high temperature measuring causes sample to be tested easily to come off when being subject to encouraging, thus the stationary installation of the measurement elastic properties of materials performance of prior art is reliable and stable not.
Utility model content
In view of this, the utility model provides a kind of sample fixing device for measuring elastic properties of materials performance, when fundamental purpose is the elastic performance of kinetic measurement material, makes sample to be tested not easily drop in vibration processes or come off, thus makes it reliable and stable.
For achieving the above object, the utility model mainly provides following technical scheme:
Embodiment of the present utility model provides a kind of sample fixing device for measuring elastic properties of materials performance, comprising:
Base, the upper surface of described base is provided with a groove, and described groove is surrounded by sidewall and bottom surface;
Some silk threads, described some silk threads pass from relative two described sidewalls respectively or pass through from the top of relative two sidewalls;
At least two outstanding falling bodies, in silk thread described in every bar and described at least two outstanding falling bodies wherein two respectively in the external stability of described groove, described outstanding falling body is by the outside of described fiber suspension at described groove, and described outstanding falling body makes described silk thread keep tensioning state by self gravitation;
Wherein, sample to be tested is horizontally set at least two described silk threads.
The purpose of this utility model and solve its technical matters and also can be applied to the following technical measures to achieve further.
The aforesaid sample fixing device for measuring elastic properties of materials performance, described sidewall is provided with the first through hole, article at least two, described silk thread passes from the first through hole of relative two described sidewalls respectively, and described sample is horizontally set on respectively from least two described silk threads that the first through hole of relative two described sidewalls passes.
The aforesaid sample fixing device for measuring elastic properties of materials performance, described first number of openings on each sidewall is one.
The aforesaid sample fixing device for measuring elastic properties of materials performance, when at least two described silk threads pass from the first through hole of relative two described sidewalls respectively, and described sample is when being horizontally set on respectively from least two described silk threads that the first through hole of relative two described sidewalls passes, have in addition silk thread described at least one from the top of the top of relative two described sidewalls and described sample by and its two ends respectively with wherein two external stabilities at described groove of described at least two outstanding falling bodies;
From the top of relative two described sidewalls and the top of described sample pass through at least one described in the tip contact of silk thread and described sample.
The aforesaid sample fixing device for measuring elastic properties of materials performance, article at least two, a respective part for described silk thread is passed from the first through hole of relative two described sidewalls respectively, described sample is placed horizontally on the described silk thread through described first through hole, simultaneously, article at least two, another part of described silk thread passes through from the top of relative two described sidewalls and described sample after double flat separately more respectively, and then with the external stability of described outstanding falling body at described groove;
The described silk thread passed through from the top of relative two described sidewalls and the top of described sample and the tip contact of described sample.
The aforesaid sample fixing device for measuring elastic properties of materials performance, described groove is U-type groove;
Described sidewall comprises the first side wall and the second sidewall that are oppositely arranged, and described first through hole is arranged on described the first side wall and described second sidewall;
Article at least two, described silk thread is all parallel and pass from the first through hole of described the first side wall and described second sidewall respectively, or passes through from the top of described the first side wall and described second sidewall;
Described sample is horizontally set at least two described silk threads being parallel to each other.
The aforesaid sample fixing device for measuring elastic properties of materials performance, described silk thread is tinsel, and described at least two outstanding falling bodies are metal cylinder rod, and described base is pottery.
The aforesaid sample fixing device for measuring elastic properties of materials performance, described silk thread is tungsten filament, and described at least two outstanding falling bodies are tungalloy cylindrical rod.
The aforesaid sample fixing device for measuring elastic properties of materials performance, described bottom surface is also provided with the second through hole, and described second through hole is corresponding with the center of described sample.
By technique scheme, the utility model at least has following advantages for the sample fixing device measuring elastic properties of materials performance:
The utility model is for measuring the sample fixing device of elastic properties of materials performance by arranging a groove at the upper surface of described base, described groove is surrounded by sidewall and bottom surface, described some silk threads are made to pass from relative two described sidewalls respectively or pass through from the top of relative two sidewalls, in silk thread described in every bar and described at least two outstanding falling bodies wherein two respectively in the external stability of described groove, described outstanding falling body is by the outside of described fiber suspension at described groove, described outstanding falling body makes described silk thread keep tensioning state by self gravitation, when therefore sample to be tested being horizontally set at least two described silk threads, described sample can not drop because of the distortion of described silk thread or come off, thus reliable and stable.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of instructions, coordinates accompanying drawing to be described in detail as follows below with preferred embodiment of the present utility model.
Accompanying drawing explanation
Fig. 1 is the structural representation of the first implementation of a kind of sample fixing device for measuring elastic properties of materials performance that an embodiment of the present utility model provides;
Fig. 2 is the understructure schematic diagram of the first implementation of a kind of sample fixing device for measuring elastic properties of materials performance that an embodiment of the present utility model provides;
Fig. 3 is the structural representation of the second implementation of a kind of sample fixing device for measuring elastic properties of materials performance that an embodiment of the present utility model provides;
Fig. 4 is the structural representation of the third implementation of a kind of sample fixing device for measuring elastic properties of materials performance that an embodiment of the present utility model provides;
Fig. 5 is the structural representation of a kind of implementation of a kind of sample fixing device for measuring elastic properties of materials performance that another embodiment of the present utility model provides;
Fig. 6 is the structural representation of the another kind of implementation of a kind of sample fixing device for measuring elastic properties of materials performance that another embodiment of the present utility model provides.
Embodiment
For further setting forth the utility model for the technological means reaching predetermined utility model object and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to according to the embodiment of the utility model application, structure, feature and effect thereof, be described in detail as follows.In the following description, the not necessarily same embodiment that different " embodiment " or " embodiment " refers to.In addition, special characteristic, structure or feature in one or more embodiment can be combined by any suitable form.
As depicted in figs. 1 and 2, a kind of sample fixing device for measuring elastic properties of materials performance that an embodiment of the present utility model proposes, comprise base 10, some silk threads 20 and outstanding falling body 30, wherein said outstanding falling body 30 has two at least.The upper surface of described base 10 is provided with a groove, and described groove is surrounded by sidewall 11 and bottom surface 12.Described some silk threads 20 can pass from relative two described sidewalls 11 respectively, or also can pass through from the top of relative two sidewalls 11.Silk thread 20 described in every bar with in described at least two outstanding falling bodies 30 wherein two respectively in the external stability of described groove, described outstanding falling body 30 is suspended on the outside of described groove by described silk thread 20, and described outstanding falling body 30 can make described silk thread 20 keep tensioning state by self gravitation.Wherein, sample to be tested is horizontally set at least two described silk threads 20.
Elastic performance mainly refers to the physical quantity of material in regime of elastic deformation, comprise elastic modulus (E, also referred to as Young modulus), shear modulus (G) and Poisson ratio (v), its Elastic Modulus and shear modulus are the important mechanics parameters characterizing solid material elastic property, reflect the ability that solid material opposing external force produces deformation.The assay method of elasticity modulus of materials, is generally divided into static method and dynamic method.Static method is applicable to measure test button usually under large deformation and normal temperature, it is slow and with relaxation process that static method measures large, the loading velocity of load, inapplicable to hard brittle material (as graphite, glass, pottery etc.), can not measure at high operating temperatures; Dynamic method is Non-Destructive Testing, the elastic modulus of material can be measured rapidly and accurately when ensureing that material is injury-free, be applicable to the measurement of various metal and nonmetal (fragility) material, the temperature range of mensuration is extremely wide, can from about liquid nitrogen temperature to 3000 DEG C.Dynamic method is a kind of widely used method in the world.
Dynamic method test is mainly divided into pulse excitation method, audio method, sound velocity method.Pulse excitation method is by the given sample pulse accumulation signal of suitable external force, when a certain frequency in accumulation signal is consistent with the natural frequency of sample, produce resonance, now amplitude is maximum, time delay is the longest, this ripple becomes electric signal to send into instrument by the transmitting and converting of test probe or measurement microphone, measures the natural frequency of sample, draws Young modulus E by formulae discovery.The feature of pulse excitation method is signal excitation, receives structure simply, and test test accurately; Signal excitation, reception all adopt contactless, are convenient to realize high temperature test; Spectrum analysis obtains sample natural frequency, accurately, intuitively.Acoustic resonance frequency method refers to and sends audio signal by acoustic frequency generator, be converted to vibration signal by transducer and drive sample, electric signal is converted to again by receive MUT, analyze the figure that this signal and generator signal are formed on oscillograph, draw the natural frequency f of sample, drawn the Young modulus of sample by formula E=C1wf2.The shortcoming of acoustic resonance frequency method is energizer complex structure, and energizer needs to be coupled with specimen surface if desired, inconvenient operation; Oscilloscope data process and show single; Multiple lissajous figures may be there is, easily judge by accident; The method is inconvenient to be used for high temperature test.Sound velocity method provides ultrasonic signal by signal generator, the test signal travel-time in the sample, draws this signal velocity of propagation ν in the sample, calculates sample Young modulus by formula E=ρ ν 2.The shortcoming of sound velocity method is energizer complex structure, and energizer needs to be coupled with specimen surface if desired, inconvenient operation; The signal transacting point of mistiming easily introduces error, can only draw approximate Young modulus; The method is inconvenient to be used for high temperature test.
Dynamic method is measured in the relevant criterion of elastic modulus: the support system of stationary installation should allow sample free vibration, and does not limit required vibration mode.Recommendation in method: sample support thing can adopt soft or hard material, stilt should have sharp edge or surface is cylindrical for support sample.Supporting way is: Young modulus (E) adopts two parallel support things to support sample; Modulus of shearing (G) then supports sample with cross hang thing; Change material and also can be used for high temperature test.
Here it should be noted that, in the present embodiment, when needing the elastic modulus measuring material, described sample can be horizontally set at least two described silk threads 20 parallel to each other; When needing modulus of shearing (shear modulus) measuring material, described sample can be horizontally set on mutually perpendicular at least two described silk threads 20.
The utility model is for measuring the sample fixing device of elastic properties of materials performance by arranging a groove at the upper surface of described base, described groove is surrounded by sidewall and bottom surface, described some silk threads are made to pass from relative two described sidewalls respectively or pass through from the top of relative two sidewalls, in silk thread described in every bar and described at least two outstanding falling bodies wherein two respectively in the external stability of described groove, described outstanding falling body is by the outside of described fiber suspension at described groove, described outstanding falling body makes described silk thread keep tensioning state by self gravitation, when therefore sample to be tested being horizontally set at least two described silk threads, described sample can not drop because of the distortion of described silk thread or come off, thus reliable and stable.
Further, as shown in Figure 3, described sidewall 11 is provided with the first through hole 110, the first through hole 110 on two relative described sidewalls 11 is corresponding, after at least two described silk threads 20 are passed from the first through hole 110 of relative two described sidewalls 11 respectively, described sample can be horizontally set on respectively from least two described silk threads 20 that the first through hole 110 of relative two described sidewalls 11 passes.Equally, described sample can be horizontally set at least two described silk threads 20 parallel to each other; Also can be horizontally set on mutually perpendicular at least two described silk threads 20.The quantity of the first through hole 110 on each described sidewall 11 can follow the quantity through described silk thread 20 wherein identical, also can be less than the quantity through described silk thread 20 wherein.Such as, when described first through hole 110 is rectangle elongated hole, each described first through hole 110 simultaneously through two or more described silk thread 20, now, each described sidewall 11 can only have described first through hole 110.
Further, when at least two described silk threads 20 pass from the first through hole 110 of relative two described sidewalls 11 respectively, when described sample is horizontally set on respectively from least two described silk threads 20 that the first through hole 110 of relative two described sidewalls 11 passes, by two kinds of methods, described sample holder can be fastened on the described silk thread 20 at its place.Wherein a kind of clamping means are, as shown in Figure 4, by silk thread 20 described in other at least one from the top of the top of relative two described sidewalls 11 and described sample by and its two ends respectively with wherein two external stabilities at described groove of described at least two outstanding falling bodies 30.Meanwhile, from the top of relative two described sidewalls 11 and the top of described sample pass through at least one described in silk thread 20 and the tip contact of described sample, like this, ensure that the described silk thread 20 passed through from top can compress described sample.Another kind of clamping means are, article at least two, a respective part for described silk thread 20 is passed from the first through hole 110 of relative two described sidewalls 11 respectively, and fix in the outside of described groove and described outstanding falling body 30 respectively, described silk thread 20 is made to strain exceptionally straight, be in tensioning state, described sample is placed horizontally on the described silk thread 20 through described first through hole 110, simultaneously, article at least two, another part of described silk thread 20 passes through from the top of relative two described sidewalls 11 and described sample after double flat separately more respectively, and then with the external stability of described outstanding falling body 30 at described groove.The described silk thread 20 passed through from the top of relative two described sidewalls 11 and the top of described sample and the tip contact of described sample, to ensure that the described silk thread 20 passed through from top can compress described sample.Wherein, the comparatively front a kind of method operation of second method is easier.
Further, as shown in Figure 5, described groove can be U-type groove, and now described groove only has two sidewalls 11, the first side wall 111 be namely oppositely arranged and the second sidewall 112.Described first through hole 110 is arranged on described the first side wall 111 and described second sidewall 112.When at least two described silk threads 20 are all parallel and pass from the first through hole 110 of described the first side wall 111 and described second sidewall 112 respectively, or from the top of described the first side wall 111 and described second sidewall 112 by time, described sample is horizontally set at least two described silk threads 20 being parallel to each other.Equally, described sample can be clamped by described silk thread 20, and as shown in Figure 6, concrete grammar, with above-mentioned two kinds of clamping means, repeats no more here.
Further, described silk thread 20 can be tinsel, and described at least two outstanding falling bodies 30 can be metal cylinder rod.Tinsel has the feature of good toughness not easy fracture, and metal cylinder rod is because density is large, so heavier, strains described silk thread 20 than being easier to by self gravitation.Certain described silk thread 20 also can use other materials such as nylon, and equally, described at least two outstanding falling bodies 30 also can be that other material is made, as long as meet the condition used, is not particularly limited here.
Further, described silk thread 20 can be tungsten filament, and described at least two outstanding falling bodies 30 can be tungalloy cylindrical rod.Tungsten filament has the advantage that fusing point is high, tensile strength is large, can well use in high temperature environments, can avoid again because described outstanding falling body 30 quality is large and be broken.Tungalloy cylindrical rod is suspended on the end of refractory metal silk (as tungsten filament), can be used for keeping described silk thread 20 to be in tensioning state, thus prevents described sample from coming off.Described base 12 can be stupalith, and stupalith has high temperature resistant and on-deformable advantage, is suitable at high temperature using dynamic method to measure the elastic performance of material.
Further, described bottom surface 12 can also arrange the second through hole 120, described second through hole 120 is corresponding with the center of described sample.When adopting above-mentioned pulse excitation method to measure the elastic modulus of described sample, external force can be applied to described sample by described second through hole 120, given described sample pulse accumulation signal, when a certain frequency in accumulation signal is consistent with the natural frequency of described sample, produce resonance, now amplitude is maximum, time delay is the longest, this ripple becomes electric signal to send into instrument by the transmitting and converting of test probe or measurement microphone, measures the natural frequency of described sample, draws Young modulus E by formulae discovery.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, the any simple modification done above embodiment according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (9)
1. for measuring a sample fixing device for elastic properties of materials performance, it is characterized in that, comprising:
Base, the upper surface of described base is provided with a groove, and described groove is surrounded by sidewall and bottom surface;
Some silk threads, described some silk threads pass from relative two described sidewalls respectively or pass through from the top of relative two described sidewalls;
At least two outstanding falling bodies, in silk thread described in every bar and described at least two outstanding falling bodies wherein two respectively in the external stability of described groove, described outstanding falling body is by the outside of described fiber suspension at described groove, and described outstanding falling body makes described silk thread keep tensioning state by self gravitation;
Wherein, sample to be tested is horizontally set at least two described silk threads.
2. the sample fixing device for measuring elastic properties of materials performance according to claim 1, is characterized in that,
Described sidewall is provided with the first through hole, and at least two described silk threads pass from the first through hole of relative two described sidewalls respectively, and described sample is horizontally set on respectively from least two described silk threads that the first through hole of relative two described sidewalls passes.
3. the sample fixing device for measuring elastic properties of materials performance according to claim 2, is characterized in that,
Described first number of openings on each sidewall is one.
4. the sample fixing device for measuring elastic properties of materials performance according to claim 3, is characterized in that,
When described sample is horizontally set on respectively from least two described silk threads that the first through hole of relative two described sidewalls passes, have in addition silk thread described at least one from the top of the top of relative two described sidewalls and described sample by and its two ends respectively with wherein two external stabilities at described groove of described at least two outstanding falling bodies;
From the top of relative two described sidewalls and the top of described sample pass through at least one described in the tip contact of silk thread and described sample.
5. the sample fixing device for measuring elastic properties of materials performance according to claim 3, is characterized in that,
Article at least two, a respective part for described silk thread is passed from the first through hole of relative two described sidewalls respectively, described sample is placed horizontally on the described silk thread through described first through hole, simultaneously, article at least two, another part of described silk thread passes through from the top of relative two described sidewalls and described sample after double flat separately more respectively, and then with the external stability of described outstanding falling body at described groove;
The described silk thread passed through from the top of relative two described sidewalls and the top of described sample and the tip contact of described sample.
6. the sample fixing device for measuring elastic properties of materials performance according to any one in claim 2 ~ 4, is characterized in that,
Described groove is U-type groove;
Described sidewall comprises the first side wall and the second sidewall that are oppositely arranged, and described first through hole is arranged on described the first side wall and described second sidewall;
Article at least two, described silk thread is all parallel and pass from the first through hole of described the first side wall and described second sidewall respectively, or passes through from the top of described the first side wall and described second sidewall;
Described sample is horizontally set at least two described silk threads being parallel to each other.
7. the sample fixing device for measuring elastic properties of materials performance according to any one in Claims 1 to 4, is characterized in that,
Described silk thread is tinsel, and described at least two outstanding falling bodies are metal cylinder rod, and described base is pottery.
8. the sample fixing device for measuring elastic properties of materials performance according to claim 7, is characterized in that,
Described silk thread is tungsten filament, and described at least two outstanding falling bodies are tungalloy cylindrical rod.
9. the sample fixing device for measuring elastic properties of materials performance according to any one in Claims 1 to 4, is characterized in that,
Described bottom surface is also provided with the second through hole, and described second through hole is corresponding with the center of described sample.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520392701.4U CN204789488U (en) | 2015-06-08 | 2015-06-08 | A sample fixing device for measuring material elasticity performance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106078565A (en) * | 2016-08-11 | 2016-11-09 | 菲舍尔航空部件（镇江）有限公司 | Ultrasonic C-Scan instrument clamps |
| CN109085059A (en) * | 2018-08-30 | 2018-12-25 | 中钢集团新型材料（浙江）有限公司 | A kind of device of velocity of sound method measurement graphite elasticity modulus |
-
2015
- 2015-06-08 CN CN201520392701.4U patent/CN204789488U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106078565A (en) * | 2016-08-11 | 2016-11-09 | 菲舍尔航空部件（镇江）有限公司 | Ultrasonic C-Scan instrument clamps |
| CN109085059A (en) * | 2018-08-30 | 2018-12-25 | 中钢集团新型材料（浙江）有限公司 | A kind of device of velocity of sound method measurement graphite elasticity modulus |
| CN109085059B (en) * | 2018-08-30 | 2023-10-27 | 赛迈科先进材料股份有限公司 | Device for measuring elastic modulus of graphite by sonic method |
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