CN104155333A - Device and method for measuring wire and cable expansion coefficient - Google Patents
Device and method for measuring wire and cable expansion coefficient Download PDFInfo
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- CN104155333A CN104155333A CN201410310182.2A CN201410310182A CN104155333A CN 104155333 A CN104155333 A CN 104155333A CN 201410310182 A CN201410310182 A CN 201410310182A CN 104155333 A CN104155333 A CN 104155333A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000006073 displacement reaction Methods 0.000 claims abstract description 66
- 239000000523 sample Substances 0.000 claims abstract description 48
- 238000005259 measurement Methods 0.000 claims abstract description 42
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims description 47
- 238000012360 testing method Methods 0.000 claims description 30
- 230000007246 mechanism Effects 0.000 claims description 21
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 20
- 238000013480 data collection Methods 0.000 claims description 11
- 230000000694 effects Effects 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 5
- 238000011000 absolute method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004556 laser interferometry Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000006250 one-dimensional material Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The invention relates to a device and a method for measuring a wire and cable expansion coefficient and belongs to the technical field of measurement. According to the measurement device, an upper plate of a quartz glass bracket is connected with a cable to be measured; the lower end of the cable to be measured penetrates through a high/low-temperature box and is connected with a weight; a thin part of the upper end of the weight is arranged in a through hole of a lower plate; after the cable to be measured is subjected to high/low-temperature deformation, the weight is driven to move upwards in the vertical direction, and the variation of displacement can be detected by a displacement sensor probe arranged on the lower plate of the bracket; the displacement sensor probe transmits the cable deformation data to a displacement data acquisition/display device for display. A linear expansion coefficient of wires and cables under load conditions can be ingeniously measured by adopting an electrical non-contact method. Because the displacement sensor probe has a certain area and is in real surface contact with a measured object, the displacement measurement has an average effect, and a position measurement error existing in a contact measurement mode can be avoided.
Description
Technical field
The present invention relates to linear expansion coefficient fields of measurement, especially relate to electric wire linear expansion coefficient measurement mechanism, belong to field of measuring technique.
Technical background
Linear expansion coefficient (coefficient of linear expansion or linear expansivity) refers to the breathing phenomenon that object has due to temperature change, its changing capability specifically refers to that, under isobaric (p is certain), unit temperature changes length or the volume change causing.Linear expansion coefficient be exosyndrome material or object when standing temperature variation, the build-in attribute that object deforms.This build-in attribute has important references in fields such as engineering design, accurate manufacture and welding processing and is worth, and therefore, to the measurement of linear expansion coefficient, is very important.
At present, most linear expansion coefficient measurement mechanisms for measuring object be material itself rather than structural member, thereby ignored the impact of actual machine stress on material or the line expansion characteristics of structural member own.And for electric wire, while installing and using, conventionally to apply certain mechanical stress, for the line expansion characteristics electric wire linear expansion coefficient measurement mechanism of electric wire under measurement mechanical stress state need to be equipped with, hang refitting and put.
Existing linear expansion coefficient measurement has absolute method and two kinds of relative methods.Absolute method refers to makes two marks on sample, and two mark spacing are sample to be tested length.By two pip displacements of displacement sensor, their displacement difference, be sample line expansion deformation quantity, yet electric wire is the complex that high-molecular organic material and metallic conductor form, only in the marking of electric wire outside surface, the line expansion deformation that cannot reflect whole wire cable, in addition, because electric wire is of a great variety, the poor operability of marking on the electric wire of different-diameter and material.Relatively method refers to that sample one end fixes, and the other end is free end, and sample stands high low temperature while changing, and the line expansion deformation of sample only can, at free end future development, go out with displacement sensor the line dilatational strain that free end travel is sample.By contrast, method has more operability than absolute method relatively.
General linear expansion coefficient displacement measuring device has two large classes: optical non-contact and mechanical contact, optical non-contact is as optical lever mensuration, laser interferometry and laser ranging method etc., mechanical contact is as milscale and LVDT displacement transducer push rod method, wherein, optical non-contact method is measured has very high precision for slotted line expansion coefficient, yet measuring method requires comparatively harsh to test environment.Although and the push rod method of mechanical contact is widely used, it belongs to contact type measurement, in measuring process, can directly or indirectly introduce the contact force of thimble.Electric wire is one-dimensional flexible body, and contact force may cause in test process load-bearing material position unstable, causes displacement measurement inaccurate.And all there is a common defects in above-mentioned two kinds of displacement measuring devices: optical measuring device Output of laser hot spot is very little, mechanical contact thimble is also very thin, hot spot or thimble and the relation of tested point on sample are actually and contact, because electric wire is online, expanding is dynamic process, the tested point that hot spot or thimble are aimed at, in sample dynamic deformation process, probably depart from the front hot spot of test or tested point corresponding to thimble, this also can cause displacement measurement inaccurate.
Summary of the invention
The problem existing for above-mentioned prior art, technical matters to be solved by this invention is to provide a kind of electric wire linear expansion coefficient measurement mechanism and measuring method, can realize the measurement to electric wire linear expansion coefficient under the heavy condition of extension, and accuracy of measurement is high, error is little.
For solving the problems of the technologies described above, technical scheme of the present invention is as follows: a kind of electric wire linear expansion coefficient measurement mechanism, described measurement mechanism comprises load-bearing material 2, displacement sensor probe 3, quartz glass support 6, high-low temperature chamber 4, displacement data collection/display device 7, described quartz glass support 6 comprises upper plate 61 and horizontally disposed lower plate 62, described upper plate 61 is provided with for the fixing connecting portion of cable under test, described cable under test upper end is fixed on upper plate connecting portion 64, high-low temperature chamber 4 is passed afterwards in cable under test lower end and load-bearing material 2 is joined, described load-bearing material 2 lower ends arrange for hanging, its upper end is plane, be provided with in the plane small diameter part, this small diameter part is placed in a through hole of lower plate 62, and small diameter part can move axially in the through hole of lower plate 62, described displacement sensor probe 3 is arranged in quartz glass support lower plate 62, described displacement sensor probe 3 lower surfaces are corresponding with the position of load-bearing material 2 upper surfaces, and there is a gap between displacement sensor probe 3 and load-bearing material 2 upper surfaces, this clearance distance is in the measurement range ability of displacement sensor probe 3, described displacement sensor probe 3 is transported to the end signal cable displacement data obtaining in displacement data collection/display device 7 and shows.
Further, described upper plate connecting portion 64 is a through hole, and the lead to the hole site of accommodating load-bearing material 2 small diameter parts of this through hole and lower plate 62 is vertically opposite.
Further, described lower plate 62 is placed on pedestal 1, and one end stretches out pedestal 1, and the through hole of described lower plate 62 is positioned at extension, and described pedestal 1 is provided with Level tune part below.
Further, described displacement sensor probe 3 is eddy current sensor or capacitive displacement transducer probe.
Further, described lower plate 62 is also provided with a mounting hole, and described displacement sensor probe 3 is fixed in this mounting hole, and mounting hole is stretched out in displacement sensor probe 3 bottoms, and vertically opposite with load-bearing material 2 upper surfaces.
Further, described load-bearing material 2 is counterweight.
Further, between the upper plate 61 of described quartz glass support 6 and lower plate 62, by quartz glass connecting rod, be connected.
Further, described quartz glass support 6 is I-shaped structure, and described connecting rod is comprised of three poles, and these three poles and upper plate 61 and lower plate 62 are integrally welded.
A kind of electric wire linear expansion coefficient measuring method:
By quartz glass support 6 lower plate 62 horizontal positioned and be fixed on pedestal 1, then, adjusting base 1 level; The small diameter part of load-bearing material 2 is fixed on to cable under test one end, the other end is through being placed on the high-low temperature chamber 4 on pedestal 1, hang on the through hole of upper plate 61 of quartz glass support 6, the small diameter part of load-bearing material 2 is through the through hole of lower plate 62, the small diameter part of load-bearing material 2 can endwisely slip along through hole, and load-bearing material 2 can move up and down with cable;
The segment length that cable under test is placed in high-low temperature chamber 4 is L, and setting program temperature control makes high-low temperature chamber 4 rise to high temperature dot T from room temperature
1, then, drop to low warm spot T
2.In temperature changing process, cable under test deforms, and displacement sensor probe 3 obtains the swollen shrinkage deformation quantity of line of cable by measuring the variation of load-bearing material 2 upper surface positions, and displacement data collection/display device 7 can show this deformation quantity Δ L in real time; According to following formula, can calculate electric wire linear expansion coefficient
Beneficial effect of the present invention: the present invention adopts electricity eyes with non-contact method to measure the linear expansion coefficient of electric wire under heavy burden condition dexterously.Because displacement sensor probe has certain area, it with testee between be that face truly contacts, its displacement measurement has average effect, can avoid an errors in position measurement that contact measurement mode exists.And the quartz glass support adopting is pure quartzy material, it is more much smaller than steel bracket thermal expansivity, and in measuring process, the distortion of expanding with heat and contract with cold of support can be ignored.This test unit has overcome the shortcoming of current existing linear expansion coefficient measurement mechanism, and the linear expansion coefficient that can be widely used in other one-dimensional material is measured, and has very high practical value.
Accompanying drawing explanation
Fig. 1 is the Facad structure schematic diagram of electric wire linear expansion coefficient measurement mechanism of the present invention.
Fig. 2 is another angle structural representation of electric wire linear expansion coefficient measurement mechanism of the present invention.
Fig. 3 is the partial schematic diagram that displacement sensor probe of the present invention is connected in lower plate with counterweight.
Number in the figure explanation: 1-pedestal; 2-load-bearing material; 3-displacement sensor probe; 4-high-low temperature chamber; 5-cable under test; 6-quartz glass support; 7-displacement data collection/display device; 21-small diameter part; 61-upper plate; 62-lower plate; 63-quartz glass connecting rod; 64-connecting portion.
Embodiment
Below in conjunction with drawings and Examples, structure of the present invention and principle of work are described in further detail.
As depicted in figs. 1 and 2, a kind of electric wire linear expansion coefficient of the present invention measurement mechanism, comprises pedestal 1, load-bearing material 2, displacement sensor probe 3, high-low temperature chamber 4, quartz glass support 6, displacement data collection/display device 7 and cable under test 5.
Described quartz glass support 6 comprises upper plate 61, horizontally disposed lower plate 62 and quartz glass connecting rod 63, and described connecting rod 63 is comprised of three poles, and these three poles and upper plate 61 and lower plate 62 are integrally welded, forms I-shaped structure.Because quartz glass support is the single composition of silicon dioxide, there is extremely low thermal expansivity, in measuring process, the distortion of expanding with heat and contract with cold of support can be ignored.
Described upper plate 61 is provided with for the fixing connecting portion 64 of cable under test 5, and this connecting portion 64 is a through hole.The vertically opposite position of described lower plate 62 and connecting portion is also provided with a through hole.The lower plate 62 of described quartz glass support 6 is placed on pedestal 1, and described pedestal 1 is provided with Level tune part below, and this Level tune part adopts bolt arrangement, can regulate pedestal 1, to make lower plate 62 in horizontality.
As shown in Figure 3, described load-bearing material 2 is counterweight, and its upper end is plane, is provided with in the plane small diameter part 21, and this small diameter part 21 is placed in the through hole of lower plate 62, and small diameter part can move axially in the through hole of lower plate 62, and load-bearing material 2 can move up and down in through hole.
Described displacement sensor probe 3 can adopt eddy current sensor or capacitive displacement transducer probe, this displacement sensor probe 3 is fixed in the mounting hole of lower plate 62, and mounting hole is stretched out in displacement sensor probe 3 bottoms, and vertically opposite with load-bearing material 2 upper surfaces, and there is a gap between displacement sensor probe 3 and load-bearing material 2 upper surfaces, this clearance distance is controlled in the measurement range ability of displacement sensor probe 3, based on electromagnetic induction principle, through displacement sensor probe 3, the end signal cable displacement data obtaining is transported in displacement data collection/display device 7 and is shown.
Cable under test 5 upper ends are fixed on the connecting portion of upper plate, and its lower end is through joining with load-bearing material 2 after high-low temperature chamber 4, and this load-bearing material 2 hangs settings by cable under test 5, and load-bearing material 2 is unsettled setting.
When the present invention uses, first, by I shape quartz glass support 6 lower plate horizontal positioned and be fixed on pedestal 1, then, by the base angle bolt under pedestal, adjusting base 1 level.The small diameter part of load-bearing material 2 is fixed on to cable under test 5 one end, the other end is through being placed on the high-low temperature chamber 4 on pedestal 1, hang on the through hole of upper plate of quartz glass support 6, the small diameter part of load-bearing material 2 is through the through hole of lower plate, the small diameter part of load-bearing material 2 can endwisely slip along through hole, and load-bearing material 2 can move up and down with cable.
The segment length that cable under test 5 is placed in high-low temperature chamber 4 is L, and this section of cable under test 5 stands high and low temperature environment to be changed.When cable under test 5 stands high low temperature generation deformation, this deformation quantity is delivered in load-bearing material 2, at this moment, displacement sensor probe 3 is by measuring the variation of load-bearing material 2 upper surface positions, hold thing and weigh clearance distance between 2 upper surfaces and displacement sensor probe 3 surfaces and also change, can obtain the swollen shrinkage deformation quantity of line of cable.Obtain the deformation quantity of cable under test 5, the end signal cable of displacement sensor probe 3 is connected in displacement data collection/display device 7.Then, according to length and the range of temperature of deformation quantity, cable under test 5, can obtain the linear expansion coefficient of cable under test 5.
During measurement, the segment length that cable under test 5 is placed in high-low temperature chamber 4 is L, and setting program temperature control makes high-low temperature chamber 4 rise to high temperature dot T from room temperature
1, then, drop to low warm spot T
2.In temperature changing process, cable under test 5 deforms, and displacement data collection/display device 7 can show this deformation quantity Δ L in real time.According to formula (1), can calculate electric wire linear expansion coefficient
Claims (9)
1. an electric wire linear expansion coefficient measurement mechanism, it is characterized in that: described measurement mechanism comprises load-bearing material (2), displacement sensor probe (3), quartz glass support (6), high-low temperature chamber (4), displacement data collection/display device (7), described quartz glass support (6) comprises upper plate (61) and horizontally disposed lower plate (62), described upper plate (61) is provided with for the fixing connecting portion of cable under test (64), described cable under test upper end is fixed on upper plate connecting portion (64), high-low temperature chamber (4) is passed afterwards in cable under test lower end and load-bearing material (2) is joined, described load-bearing material (2) lower end arranges for hanging, its upper end is plane, be provided with in the plane small diameter part, this small diameter part is placed in a through hole of lower plate (62), and small diameter part can move axially in the through hole of lower plate (62), described displacement sensor probe (3) is arranged in quartz glass support (6) lower plate (62), described displacement sensor probe (3) lower surface is corresponding with the position of load-bearing material (2) upper surface, and there is a gap between displacement sensor probe (3) and load-bearing material (2) upper surface, this clearance distance is in the measurement range ability of displacement sensor probe (3), described displacement sensor probe (3) is transported to the upper demonstration of displacement data collection/display device (7) by the end signal cable displacement data obtaining.
2. electric wire linear expansion coefficient measurement mechanism according to claim 1, is characterized in that: described upper plate connecting portion (64) is a through hole, and the lead to the hole site of the accommodating load-bearing material small diameter part of this through hole and lower plate (62) is vertically opposite.
3. electric wire linear expansion coefficient measurement mechanism according to claim 1 and 2, it is characterized in that: described lower plate (62) is placed on pedestal (1), and pedestal (1) is stretched out in one end, the through hole of described lower plate (62) is positioned at extension, and described pedestal (1) is provided with Level tune part below.
4. electric wire linear expansion coefficient measurement mechanism according to claim 3, is characterized in that: described displacement sensor probe (3) is eddy current sensor or capacitive displacement transducer probe.
5. electric wire linear expansion coefficient measurement mechanism according to claim 4, it is characterized in that: described lower plate (62) is also provided with a mounting hole, described displacement sensor probe (3) is fixed in this mounting hole, mounting hole is stretched out in displacement sensor probe (3) bottom, and vertically opposite with load-bearing material (2) upper surface.
6. electric wire linear expansion coefficient measurement mechanism according to claim 5, is characterized in that: described load-bearing material (2) is counterweight.
7. electric wire linear expansion coefficient measurement mechanism according to claim 6, is characterized in that: between the upper plate (61) of described quartz glass support (6) and lower plate (62), by quartz glass connecting rod, be connected.
8. electric wire linear expansion coefficient measurement mechanism according to claim 7, it is characterized in that: described quartz glass support (6) is I-shaped structure, described connecting rod is comprised of three poles, and these three poles and upper plate (61) and lower plate (62) are integrally welded.
9. an electric wire linear expansion coefficient measuring method, is characterized in that: described method comprises following steps:
Step 1: the measurement mechanism of the electric wire linear expansion coefficient as described in any one in claim 1-8 is provided;
Step 2: by quartz glass support (6) lower plate (62) horizontal positioned and to be fixed on pedestal (1) upper, then, adjusting base (1) level; The small diameter part of load-bearing material (2) is fixed on to cable under test one end, the other end is through being placed on the high-low temperature chamber (4) on pedestal (1), hang on the through hole of upper plate (61) of quartz glass support (6), the small diameter part of load-bearing material (2) is through the through hole of lower plate (62), load-bearing material
(2) small diameter part can endwisely slip along through hole, and load-bearing material (2) can move up and down with cable;
Step 3: the segment length that cable under test is placed in high-low temperature chamber (4) is L, setting program temperature control, makes high-low temperature chamber (4) rise to high temperature dot T from room temperature
1, then, drop to low warm spot T
2.In temperature changing process, cable under test deforms, displacement sensor probe (3) obtains the swollen shrinkage deformation quantity of line of cable by measuring the variation of load-bearing material (2) upper surface position, displacement data collection/display device (7) can show this deformation quantity Δ L in real time; According to following formula, can calculate electric wire linear expansion coefficient
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410310182.2A CN104155333B (en) | 2014-07-01 | 2014-07-01 | Device and method for measuring wire and cable expansion coefficient |
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| CN201410310182.2A CN104155333B (en) | 2014-07-01 | 2014-07-01 | Device and method for measuring wire and cable expansion coefficient |
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| CN104155333B CN104155333B (en) | 2017-05-10 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067660A (en) * | 2015-08-22 | 2015-11-18 | 浙江鑫宙竹基复合材料科技有限公司 | Method for testing axial linear expansion coefficient of bamboo composite pressure tube |
| CN106124893A (en) * | 2016-06-23 | 2016-11-16 | 芜湖顺成电子有限公司 | The thermal shock test chamber of low smoke no-halogen wire |
| CN108226216A (en) * | 2016-12-22 | 2018-06-29 | 株式会社三丰 | Linear expansion coefficient determining method and measurement device |
| CN109164132A (en) * | 2017-12-06 | 2019-01-08 | 济南兰光机电技术有限公司 | A kind of device, method and film pyrocondensation tester detecting material expansion and contraction |
| CN109856181A (en) * | 2019-02-19 | 2019-06-07 | 商洛学院 | A kind of lift college physics teaching expansion coefficients of metal wire measurement device |
| WO2019109414A1 (en) * | 2017-12-06 | 2019-06-13 | 济南兰光机电技术有限公司 | Device and method for detecting expansion and shrinkage rate of material, and thin film heat shrinkage tester |
| CN110823944A (en) * | 2019-10-18 | 2020-02-21 | 航天材料及工艺研究所 | High-temperature thermal expansion performance testing device in high-heat-conduction high-modulus carbon fiber |
| CN111351634A (en) * | 2018-12-21 | 2020-06-30 | 上海起帆电缆股份有限公司 | Method for detecting load-bearing retraction performance of photoelectric composite cable |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3075378A (en) * | 1957-10-08 | 1963-01-29 | Commissariat Energie Atomique | Methods and apparatus for the determination of thermal stresses |
| EP0498780A1 (en) * | 1991-02-08 | 1992-08-12 | C.E. Johansson Ab | A method and arrangement for determining the linear (heat) expansion of elongated bodies |
| DE19647312A1 (en) * | 1996-11-13 | 1998-05-14 | Siemens Ag | Expansion and tensile properties determination method, as function of temperature, for long test piece e.g. wire |
| JP2004279074A (en) * | 2003-03-13 | 2004-10-07 | Shimadzu Corp | Apparatus for thermomechanical analysis |
| CN202939142U (en) * | 2012-12-11 | 2013-05-15 | 山西省电力公司大同供电分公司 | Device for measuring linear expansion coefficients of metals |
-
2014
- 2014-07-01 CN CN201410310182.2A patent/CN104155333B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3075378A (en) * | 1957-10-08 | 1963-01-29 | Commissariat Energie Atomique | Methods and apparatus for the determination of thermal stresses |
| EP0498780A1 (en) * | 1991-02-08 | 1992-08-12 | C.E. Johansson Ab | A method and arrangement for determining the linear (heat) expansion of elongated bodies |
| DE19647312A1 (en) * | 1996-11-13 | 1998-05-14 | Siemens Ag | Expansion and tensile properties determination method, as function of temperature, for long test piece e.g. wire |
| JP2004279074A (en) * | 2003-03-13 | 2004-10-07 | Shimadzu Corp | Apparatus for thermomechanical analysis |
| CN202939142U (en) * | 2012-12-11 | 2013-05-15 | 山西省电力公司大同供电分公司 | Device for measuring linear expansion coefficients of metals |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067660A (en) * | 2015-08-22 | 2015-11-18 | 浙江鑫宙竹基复合材料科技有限公司 | Method for testing axial linear expansion coefficient of bamboo composite pressure tube |
| CN105067660B (en) * | 2015-08-22 | 2018-01-26 | 浙江鑫宙竹基复合材料科技有限公司 | A kind of method for testing bamboo composite pressure pipe axial direction linear expansion coefficient |
| CN106124893A (en) * | 2016-06-23 | 2016-11-16 | 芜湖顺成电子有限公司 | The thermal shock test chamber of low smoke no-halogen wire |
| CN108226216A (en) * | 2016-12-22 | 2018-06-29 | 株式会社三丰 | Linear expansion coefficient determining method and measurement device |
| CN108226216B (en) * | 2016-12-22 | 2021-11-16 | 株式会社三丰 | Method and apparatus for measuring linear expansion coefficient |
| CN109164132A (en) * | 2017-12-06 | 2019-01-08 | 济南兰光机电技术有限公司 | A kind of device, method and film pyrocondensation tester detecting material expansion and contraction |
| WO2019109414A1 (en) * | 2017-12-06 | 2019-06-13 | 济南兰光机电技术有限公司 | Device and method for detecting expansion and shrinkage rate of material, and thin film heat shrinkage tester |
| CN111351634A (en) * | 2018-12-21 | 2020-06-30 | 上海起帆电缆股份有限公司 | Method for detecting load-bearing retraction performance of photoelectric composite cable |
| CN109856181A (en) * | 2019-02-19 | 2019-06-07 | 商洛学院 | A kind of lift college physics teaching expansion coefficients of metal wire measurement device |
| CN110823944A (en) * | 2019-10-18 | 2020-02-21 | 航天材料及工艺研究所 | High-temperature thermal expansion performance testing device in high-heat-conduction high-modulus carbon fiber |
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