Compact device for testing interfacial shear strength of composite material and method for testing interfacial shear strength of composite material through device

A technology of interfacial shear strength and composite materials, which can be used in measuring devices, using stable tension/pressure to test the strength of materials, analyzing materials, etc. The device is large in size and difficult to integrate, so as to achieve the effect of convenient disassembly, small size and high precision

Inactive Publication Date: 2016-05-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the only existing micro-debonding test device that can quantitatively measure the pure interface strength of the actual composite material sample to be tested is too large to be integrated in a low-temperature environment cavity,...

Method used

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  • Compact device for testing interfacial shear strength of composite material and method for testing interfacial shear strength of composite material through device
  • Compact device for testing interfacial shear strength of composite material and method for testing interfacial shear strength of composite material through device
  • Compact device for testing interfacial shear strength of composite material and method for testing interfacial shear strength of composite material through device

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Experimental program
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specific Embodiment approach 1

[0027] Embodiment 1: This embodiment is a compact composite material interface shear strength test device including a fixed base 1, a micro-tensile testing system and a droplet clamping system;

[0028] The micro-tensile testing system includes an x-direction piezoelectric ceramic displacement platform 2, a micro-stress sensor 3, a first fiber clamp 4 and a second fiber clamp 7;

[0029] The droplet clamping system includes a first y-direction piezoelectric ceramic displacement platform 5, a second y-direction piezoelectric ceramic displacement platform 10, a first micro-cutter 6 and a second micro-cutter 9;

[0030] The x-direction piezoelectric ceramic displacement platform 2, the first y-direction piezoelectric ceramic displacement platform 5, the second y-direction piezoelectric ceramic displacement platform 10, the first fiber clamp 4 and the second fiber clamp 7 are respectively installed on the fixed base seat 1;

[0031] One end of the micro-stress sensor 3 is connect...

specific Embodiment approach 2

[0038] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the x-direction piezoelectric ceramic displacement platform 2 can drive the first fiber clamp 4 to move along the x-axis direction, and the micro-stress sensor 3 is used to measure the x-axis stress value. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0039] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the first y-direction piezoelectric ceramic displacement platform 5 and the second y-direction piezoelectric ceramic displacement platform 10 can drive the first micro The blades of the cutter 6 and the second micro cutter 9 move along the y-axis direction. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

Disclosed are a compact device for testing the interfacial shear strength of a composite material and a method for testing the interfacial shear strength of the composite material through the device. The invention relates to the device and method for testing the interfacial shear strength of a composite material. An object of the invention is to solve the problems that a conventional micro-debonding test device which is unique for pure quantitative detection of the interfacial shear strength of an actual to-be-tested composite material sample is hard to be integrated in a low-temperature environment chamber because of the over size and cannot be used for testing the interfacial shear strength of a composite material in a low-temperature environment. The device comprises a fixed pedestal, a micro-extension test system, and a microsphere holding system. The method comprises: 1, preparation of a sample for an interfacial shear strength test; 2, interfacial shear strength test; and 3, calculation of the interfacial shear strength tau of the composite material according to a formula defined in the description. According to the invention, the compact device for testing the interfacial shear strength of a composite material and the method for testing the interfacial shear strength of the composite material through the device are obtained.

Description

technical field [0001] The invention relates to a composite material interface shear strength testing device and a method for testing the composite material interface shear strength. Background technique [0002] With the rapid development of low-temperature fields such as aerospace, large cryogenic engineering, superconducting technology, and medical services, composite materials are more and more widely used in low-temperature environments, including various structures, supports, and connections used in low-temperature environments. At the same time, various stringent requirements are put forward for the mechanical properties of these structural parts. For example, in the space environment, the temperature changes greatly, and when the satellite is running on the side of the earth facing the sun and the side facing away from the sun , it is required that the spacecraft structure has excellent mechanical properties and thermal shock resistance in the range of 90K-600K; the ...

Claims

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Application Information

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IPC IPC(8): G01N3/18G01N3/04
CPCG01N3/18G01N3/04G01N2203/0096G01N2203/04
Inventor 郝立峰王琦王荣国赫晓东
Owner HARBIN INST OF TECH
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