基于力响应发光材料的结构损伤可视化检测技术研究进展

doi:10.3901/JME.2023.16.054

摘要/Abstract

摘要： 服役中的装备往往承受着严苛环境和复杂载荷作用,因此损伤的早期发现和结构完整性评估对保障装备安全至关重要。力响应发光材料可以将外力转化为光学响应,具备非接触、采集传输简单和可视化等优点。近些年,基于力响应发光材料的传感涂层将构件的变形和损伤演化转化为直观可视的发光或颜色改变,根据发光变色响应开展构件的损伤评估,成为研发可视化的损伤检测及评估技术的新思路。概述典型力响应发光材料的光学响应规律和响应机制,梳理基于力响应发光材料的检测方法在工程构件的应力应变、裂纹演化、内部损伤以及冲击振动检测领域的应用进展,最后总结和展望了基于力响应发光材料的损伤可视化检测技术面临的挑战和发展趋势。

关键词: 力致发光, 力致变色, 可视化, 损伤检测, 结构完整性

Abstract: Equipment usually operates under severe environment and complex stress. Therefore, early detection of damage initiation and structural integrity assessment are critically important for structure safety. The external force can be converted into optical response using mechanoresponsive luminogens（MRLs）, which has the advantage of non-contract, simple acquisition and transmission, visualization, etc. Recently, mechanical deformation and structural damage are transformed into visible luminescent signal or color alternation using MRLs-based sensing film, and the structural damage can be evaluated based on the luminescent signal or color alternation, providing a new idea for visual detection and assessment of structural damage. A brief overview of luminescence mechanism and performance of the typical MRLs is introduced. Moreover,preliminary applications of MRLs-based detection method for stress/strain sensing, crack evolution, inner defect as well as impact and vibration damage are summarized. Finally, the current challenges and the prospects of future trends for applications of MRLs-based detection method in industries are proposed.

Key words: mechanoluminescence, mechanochromic luminescence, visualization, damage detection, structural integrity

中图分类号:

TB553
TH17

张喆, 陈刚, 陈旭. 基于力响应发光材料的结构损伤可视化检测技术研究进展[J]. 机械工程学报, 2023, 59(16): 54-71.

ZHANG Zhe, CHEN Gang, CHEN Xu. Recent Progress in the Visual Detection Methods for Structural Damage Using Mechanoresponsive Luminogen[J]. Journal of Mechanical Engineering, 2023, 59(16): 54-71.

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