CN202994595U - Young modulus measurement experimental apparatus - Google Patents
Young modulus measurement experimental apparatus Download PDFInfo
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- CN202994595U CN202994595U CN 201220693941 CN201220693941U CN202994595U CN 202994595 U CN202994595 U CN 202994595U CN 201220693941 CN201220693941 CN 201220693941 CN 201220693941 U CN201220693941 U CN 201220693941U CN 202994595 U CN202994595 U CN 202994595U
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- metal wire
- young
- tinsel
- modulus
- utility
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- 238000005259 measurement Methods 0.000 title abstract description 10
- 238000002474 experimental method Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 15
- 239000002184 metal Substances 0.000 abstract description 10
- 230000003287 optical effect Effects 0.000 abstract description 10
- 230000008602 contraction Effects 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000005483 Hooke's law Effects 0.000 description 1
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013341 scale-up Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
本实用新型公开了一种测定金属丝的杨氏模量实验装置，包括：钟表式百分表(15)用固定架(14)固定在固定平台(5)上，使测微导杆(12)与滑动夹头(4)的上表面接触，当增加或减少砝码(6)时，夹紧金属丝(2)的滑动夹头(4)随金属丝(2)的伸缩而上下移动，这种微小的金属丝伸缩量即可由百分表(15)指针位置的变化读出来，进而求出被测金属丝(2)的杨氏模量。本实用新型所述的拉伸法测定金属丝的杨氏模量实验装置，取消了原装制中的望远镜(8)、光杠杆(3)等，采用直读式方法，使实际测量更加简单、快捷。
The utility model discloses an experimental device for measuring the Young's modulus of a metal wire, which comprises: a clock-type dial indicator (15) is fixed on a fixed platform (5) by a fixing frame (14), so that the micrometer guide rod (12 ) is in contact with the upper surface of the sliding chuck (4), when the weight (6) is increased or decreased, the sliding chuck (4) clamping the metal wire (2) moves up and down with the expansion and contraction of the metal wire (2), This small amount of stretching of the metal wire can be read out by the change of the pointer position of the dial gauge (15), and then the Young's modulus of the measured metal wire (2) can be obtained. The tensile method described in the utility model measures the Young's modulus experimental device of metal wire, cancels telescope (8), optical lever (3) etc. in the original package, adopts direct-reading method, makes actual measurement simpler, fast.
Description
Technical field
The utility model relates to a kind of physics facility, relates in particular to a kind of experimental facility for measuring Young modulus of metal wire by stretching method.
Background technology
It is to make stressed object generation deformation that masterpiece is used for one of caused effect of object, and the deformation of object can be divided into elastic deformation and plastic deformation.The elastic deformation of solid material can be divided into again vertically, shear, torsion, bending, can describe with Young modulus the ability of material opposing deformation for longitudinal elasticity deformation.Young modulus is an important physical quantity that characterizes solid material character, is one of important parameter that in engineering design, the selection of material need relate to often, and is general only relevant with material character and temperature, irrelevant with its geometric configuration.
If former long L wiry, cross-sectional area is S, and after application of force F, its length changes Δ L along its length, and the vertical F/S that is subject on the tinsel unit area is called normal stress, and relative elongation Δ L/L wiry is called line strain.Experimental result points out, in elastic range, by Hooke's law as can be known the normal stress of object be directly proportional to line strain, namely
Scale-up factor Y is Young's modulus of elasticity.
For the tiny length of measuring fine wire changes, generally used the optical lever amplifying method in experiment, the effect of optical lever is that tiny length is changed the change in location that is enlarged on scale, the tiny length of indirectly trying to achieve the steel wire elongation by the linear measure longimetry of easier Measurement accuracy changes, and Telescope and optical lever form measuring system as shown in Figure 1.
The upper end of tinsel 2 is clamped in fixed chuck 1.There is a platform that can move up and down 5 at its middle part, is used for support optical lever 3.A circular hole is arranged on platform, a chuck that can slide up and down 3 is arranged in the hole, tinsel 2 is clamped in chuck 3.Hang with counterweight 6 below tinsel 2, the optical lever 3 that is placed on platform can be amplified in the subtle change of tinsel 2 length on scale 7, and measures by telescope 8.
This experiment for many years, is to observe resembling of scale label in the optical lever catoptron with telescope always, and obtains the steel wire length variable quantity by the change in location of measuring elephant.But in fact in student experimenting, because range of telescope is little, the student feels difficulty when telescope adjustment and measurement, the student is difficult to see by adjusting the scale label that optical lever reflects back in telescope, even completely do not become the measurement task, telescope also is being easy to damage in a large amount of student's Reusabilities.
The utility model is also to measure Young modulus wiry with the static stretch method, but measurement instrument adopts the dial gauge of clock-type, makes that experimental technique is easy, directly perceived, precision is high.
The utility model content
The purpose of this utility model is to provide directly perceived, the effective pulling method of a kind of method and measures Experiment of Measuring Young's device wiry.
The purpose of this utility model is achieved through the following technical solutions:
Pulling method of the present utility model is measured Experiment of Measuring Young's device wiry, comprising:
Measure small elongation wiry with the clock-type dial gauge.
Described clock-type dial gauge is comprised of index dial 9, pointer 11, axle sleeve 10 and micrometer guide rod 12, and measurement range is the 0-5 millimeter, and measuring accuracy is 0.01 millimeter, as shown in Figure 2.
The clock-type dial gauge is fixed on stationary platform 5 with fixed mount 14, micrometer guide rod 12 is contacted with the upper surface of sliding clamp 4, when increasing or reduce counterweight 6, clamp the sliding clamp 4 of tinsel 2 with flexible moving up and down wiry, this small tinsel 2 strokes can be read out by the variation of dial gauge pointer 11 positions, and then obtain tested Young modulus wiry.
Can be found out by the technical scheme that above-mentioned the utility model provides, pulling method described in the utility model is measured Experiment of Measuring Young's device wiry, cancelled telescope in original-pack system, optical lever etc., adopted the direct-reading method, made actual measurement more simple, quick.
Description of drawings
Fig. 1 is original experimental facility for measuring Young modulus of metal wire by stretching method schematic diagram
Fig. 2 is clock-type dial gauge schematic diagram
Fig. 3 is the utility model experimental facility for measuring Young modulus of metal wire by stretching method schematic diagram.
In figure: 1, fixed chuck, 2, tinsel, 3, optical lever, 4, sliding clamp, 5, stationary platform, 6, counterweight, 7, scale, 8, telescope, 9, dial plate, 10, axle sleeve, 11, pointer, 12, the micrometer guide rod, 13, support, 14, fixed mount, 15, dial gauge.
Embodiment
Experimental facility for measuring Young modulus of metal wire by stretching method of the present utility model, its better embodiment as shown in Figure 3.
1, regulate support 13 stationary platform 5 is the level of state, a circular hole is arranged on stationary platform 5, a chuck 4 that can easy on and off slides is arranged in the hole, tinsel 2 is clamped in sliding clamp 4, hangs with counterweight 6 below tinsel 2.
2, clock-type dial gauge 15 use fixed mounts 14 are fixed on stationary platform 5, make the upper surface good contact of micrometer guide rod 12 and sliding clamp 4 and keep vertical, and the reading of dial gauge 15 during the record zero load.
3, by increasing gradually counterweight 6 or reducing counterweight 6, record the reading of dial gauge, can measure the Young modulus of this tinsel 2.
In the present embodiment, each counterweight that increases by 1 kilogram, until 10 kilograms, record the reading of dial gauge 15, by the difference of adjacent twice reading obtain increase counterweight, be the elongation Δ L of tinsel L after the stressed F of tinsel, repeat 3 times, ask its mean value, utilize the average elongation amount of obtaining 1 kilogram of counterweight tinsel 2 of every increase by poor method
Measure length L and the diameter d of tinsel 2, with measurement data substitution following formula
Can try to achieve the Young modulus of tinsel 2.
The utlity model has following features:
Measure simply, general student instructs a little all and can complete at short notice the measurement task;
Measuring accuracy is high, and owing to adopting the clock-type dial gauge to measure, measured value is clear eye-catching, directly reads, and has eliminated the every error in former measuring method, has improved measuring accuracy.
Claims (1)
1. Young modulus experiments of measuring device, it is characterized in that: clock-type dial gauge (15) is fixed on stationary platform (5) with fixed mount (14), a chuck (4) that can easy on and off slides is arranged in the circular hole on stationary platform (5), tinsel (2) is clamped in sliding clamp (4), hang with counterweight (6) below tinsel (2), micrometer guide rod (12) contacts with the upper surface of sliding clamp (4), when increasing or reduce counterweight (6), easy on and off moves with the flexible of tinsel (2) to clamp sliding clamp wiry (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220693941 CN202994595U (en) | 2012-12-01 | 2012-12-01 | Young modulus measurement experimental apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220693941 CN202994595U (en) | 2012-12-01 | 2012-12-01 | Young modulus measurement experimental apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202994595U true CN202994595U (en) | 2013-06-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220693941 Expired - Fee Related CN202994595U (en) | 2012-12-01 | 2012-12-01 | Young modulus measurement experimental apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202994595U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109991082A (en) * | 2019-03-28 | 2019-07-09 | 武汉东湖学院 | A Young's Modulus Measuring Device |
| CN110907351A (en) * | 2019-11-27 | 2020-03-24 | 广东小太阳砂磨材料有限公司 | Method for testing softness of soft coated abrasive tool |
| CN114608963A (en) * | 2022-03-25 | 2022-06-10 | 电子科技大学 | Metal wire Young modulus measuring device and method based on exhaust method |
| CN114689431A (en) * | 2022-03-30 | 2022-07-01 | 浙江理工大学 | A device for measuring Young's modulus of metal wire by gear method |
-
2012
- 2012-12-01 CN CN 201220693941 patent/CN202994595U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109991082A (en) * | 2019-03-28 | 2019-07-09 | 武汉东湖学院 | A Young's Modulus Measuring Device |
| CN109991082B (en) * | 2019-03-28 | 2024-03-08 | 武汉东湖学院 | A Young's modulus measuring device |
| CN110907351A (en) * | 2019-11-27 | 2020-03-24 | 广东小太阳砂磨材料有限公司 | Method for testing softness of soft coated abrasive tool |
| CN114608963A (en) * | 2022-03-25 | 2022-06-10 | 电子科技大学 | Metal wire Young modulus measuring device and method based on exhaust method |
| CN114608963B (en) * | 2022-03-25 | 2023-11-28 | 电子科技大学 | A metal wire Young's modulus measurement device and measurement method based on the exhaust method |
| CN114689431A (en) * | 2022-03-30 | 2022-07-01 | 浙江理工大学 | A device for measuring Young's modulus of metal wire by gear method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20131201 |