Mechanoluminescence visual inspection of microcrack generation through fatigue process in flexible electronic films

Author:

Terasaki NaoORCID,Ando Nao,Hyodo Kei

Abstract

AbstractWe propose a novel method for filling a gap in originally invisible mechanical behavior in modeling, evaluation and products by using mechanoluminescent (ML) visual sensing. To demonstrate the effect of the method, mechanical information was evaluated in folding tests of flexible electronic films. As a result, the appearance of strain concentration was successfully visualized on the basis of mechanoluminescence, and complex dynamic mechanical information was instinctively understood from the time course of the ML patterns. In addition, the ML pattern clearly depends on the sticking situation of the flexible film on a folding plate with gripping tape even in the same test conditions such as the same folding radius, material and thickness which are considerable major factors in mechanical behavior at folding. Moreover, microcrack generation was detected during the folding cycle as blinking of ML points, and it occurred even from a 10-cycle fatigue of the flexible film in endurance folding tests.

Publisher

IOP Publishing

Subject

General Physics and Astronomy,General Engineering

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Direct Visualization of Mechanical Behavior During Adhesive Bonding Failure Using Mechanoluminescence (ML);Interfacial Phenomena in Adhesion and Adhesive Bonding;2023-10-27

2. Mechanoluminescent Visualization of Crack Propagation for Joint Evaluation;Journal of Visualized Experiments;2023-01-06

3. Optical properties of flexible ceramic films;Advanced Flexible Ceramics;2023

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