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复合材料作为一种新型材料,以其特有的优点已被广泛应用于航空、航天、建筑、桥梁等领域,复合材料的损伤修复已成为热点研究的项目。文中用现代光测技术,以飞行器上常用的复合材料作试件,用实时法测定了试件在不同激振力作用下的共振频率,再用时间平均全息干涉计量术拍摄了在特定共振频率下试件的原始状态、受损状态以及经光固化修复后的全息图。通过对拍摄全息图的比较和分析,结果表明,受损后试件的抗弯刚度减小;相对于试件的标准状态,光修复后试件振型基本恢复了原始状态,达到了较好的修复效果。实验验证了光修复技术应用的可行性,为光修复技术的应用提供了实验依据。
As a new type of material, composite materials have been widely used in the fields of aviation, aerospace, building, bridge and so on for their unique advantages. The damage repair of composite materials has become a hot research project. In this paper, the modern photometric technique is used to test the composite materials commonly used in aircraft. The resonance frequency of the specimen under different exciting forces is measured by real-time method. The time-average holographic interferometry is used to measure the resonance frequency at specific resonance frequency The original state of the specimen under test, the damaged state, and the hologram after being photo-cured. The results of comparison and analysis of the shot hologram show that the bending stiffness of the specimen decreases after the damage. Compared with the standard state of the specimen, the vibration mode of the specimen after the light restoration basically restores the original state and reaches a better value Repair effect. The feasibility of application of optical repair technology is verified by experiment, which provides experimental basis for the application of optical repair technology.