A flexible electronic tensile and flexural performance testing system

Abstract

The invention belongs to the field of correlation techniques of flexible electronics and discloses an anti-tensile and anti-flexing performance test system for flexible electronics. The system comprises a control module, a data acquisition module and a testing module, wherein the testing module comprises two fixed mandrel units and two bent mandrel units in a sealing manner, and each fixed mandrel unit has fixing and stretching functions on the flexible electronics, has the freedom degree in the X direction and can be provided with a tension sensor; each bent mandrel unit can realize radius bending of a given mandrel, has freedom degrees in X and Y directions and can be provided with a pressure sensor and a CCD camera. Through combination of the four mandrel units, tests of constant tension, bending pressure, testing temperatures as well as flexing resistance of complicated curved surfaces such as C type, S type, G type and the like with adjustable bending radii, bending speeds and bending angles can be realized, anti-tensile performance test can be realized, and the defects that an existing device can only perform simple C type test and test data are not accurate due to non-quantitative test conditions are effectively overcome.

Description

technical field [0001] The invention belongs to the technical field related to flexible electronic testing, and more specifically relates to a flexible electronic tensile and flexural resistance testing system. Background technique [0002] Fatigue is a form of failure in which flexible electronic materials undergo sudden fracture under alternating stress below its flexural strength limit, which is fundamentally different from static failure. Relevant studies have shown that about 50%-90% of Part failure and fatigue crack generation and development are inseparable. Flexible electronics, typically represented by flexible printed circuit boards, have been widely used in many fields due to their dynamic bending, twisting, and folding characteristics. The probability and time of alternating stress and strain action are much greater than the probability and time of constant load action, so the main failure mode in its use is flexural fatigue failure or flexural fatigue damage. C...

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Problems solved by technology

However, further studies have shown that although the device can complete the measurement of fixed-point deflection resistance and relaxation creep performance of flexible electronics under constant load and constant elongation, it can only perform simple C-type tests, but cannot meet the requirements of S-type tests. The flexural performance test of complex curved surfaces such as type and G type, and the test environment temperature is not adjustable

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