Glue connecting dynamic shear testing device and method based on Hopkinson pressure bar system

A technology of Hopkinson compression bar and testing device, which is applied in the direction of applying stable shear force to test the strength of materials, measuring devices, instruments, etc., which can solve the problems of testing method and result error, complex device, etc., and achieve reasonable and reliable design , Guaranteed accuracy, easy to use effect

Active Publication Date: 2021-08-20
TAIYUAN UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of complex device, large test method and result error in the existing glue joint dynamic shear test, the present invention provides a method based on Hopkinson Glue joint dynamic shear test device and method for pressure bar system

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  • Glue connecting dynamic shear testing device and method based on Hopkinson pressure bar system
  • Glue connecting dynamic shear testing device and method based on Hopkinson pressure bar system
  • Glue connecting dynamic shear testing device and method based on Hopkinson pressure bar system

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with specific examples.

[0022] A dynamic shear test device for glued joints based on the Hopkinson pressure bar system, such as Figure 1 ~ Figure 3 Shown: including adhesive joints and Hopkinson pressure bar system; said adhesive joints include three lap joints, two layers of adhesive layers 1 and a polytetrafluoroethylene sleeve 5, and the three lap joints are lap joints Part I2, lapping part II3 and lapping part III4, the three lapping parts and the two layers of adhesive layer 1 are interconnected by double lapping. The double lapping method is: lapping part I2 is located between lapping part II3 and In the middle of the lap joint III4, the front and rear sides of the lap joint I2, the lap joint II3 and the lap joint III4 are flush, and the left and right sides of the lap joint I2 and the lap joint II3 are misaligned and connected by the glue layer 1, The bridging piece I2 and the bridging piece...

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Abstract

The invention discloses a glue connecting dynamic shear testing device and method based on a Hopkinson pressure bar system, and relates to the field of dynamic mechanical testing devices and methods. The testing device can test and characterize the dynamic shearing mechanical behavior of the glue connecting piece, and comprises a glue connecting piece and a Hopkinson pressure bar system; the glue connecting piece comprises three lap joint pieces, two glue layers and a polytetrafluoroethylene sleeve, the lap joint pieces and the glue layers are connected in a double-lap joint mode, the lap joint piece I, the lap joint piece II and the lap joint piece III are the same in material, length and width, the thickness of the lap joint piece I is two times that of the lap joint piece II and the lap joint piece III, and the polytetrafluoroethylene sleeve seamlessly sleeves the outer sides of the lap joint piece II and the lap joint piece III. The device is reasonable and reliable in design and convenient to use, meanwhile, the glue layers are in a pure shear state in the testing process, the influence of elastic deformation of the lap joint pieces is eliminated in the dynamic shear strain obtaining process, and effective testing characterization of glue dynamic shear mechanical behaviors based on the Hopkinson pressure bar system can be achieved.

Description

technical field [0001] The invention relates to the field of dynamic mechanical testing devices and methods, in particular to a glued dynamic shear testing device and method based on a Hopkinson pressure bar system. Background technique [0002] Adhesive joint structures are easy to withstand dynamic shear loads when they are used in national defense, aerospace and other fields, and their shear mechanical behavior at higher loading rates is different from quasi-static loading. Carry out dynamic shear test characterization of adhesive joint structures It is of great significance to its engineering design and reliability evaluation. [0003] At present, there have been researches on the static shear mechanics test of the glued joint structure, which mainly adopts the single lap joint interconnection method, which is easy to cause the influence of the additional bending load on the shear test results; at the same time, there are reports on the dynamic shear test characterizatio...

Claims

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Application Information

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IPC IPC(8): G01N3/24
CPCG01N3/24G01N2203/0025Y02E30/30
Inventor 肖革胜司博文王铁军树学峰熊蘅
Owner TAIYUAN UNIV OF TECH
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