振动激励条件下复合材料损伤生热的研究

为实现对复合材料表面及浅表面损伤的快速检测，采用振动热成像技术，对复合材料在疲劳、冲击等不同作用下产生的损伤进行了检测研究。分析了瞬时性和周期性两种内生热源形式下平板构件的表面温度场分布。基于有限元法计算了表面裂纹、浅表面分层及内部脱粘等不同类型损伤在振动激励条件下的生热情况。在设计制作复合材料疲劳裂纹试件和冲击损伤试件的基础上，利用超声波发生器和红外热像仪开展了试验研究。结果表明: 振动热成像技术能够快速准确地检测到复合材料表面及浅表面的紧贴型损伤; 通过红外序列图中热斑形状可判断损伤的类型。

Abstract

The vibrothermography technique was applied to detect: The surface temperature distribution of flat-panel component under different endogenous heat sources (instantaneous and periodical) was studied. The heating at the different forms of damage, including surface crack, subsurface delamination and internal debond, was simulated under vibration excitation by numerical finite element method. Typical composite component specimens with different types of damage including impact and fatigue were designed and produced, then detected by vibrothermography method with ultrasonic generator and infrared camera. The results prove the feasibility and advantages of the vibrothermography method for detecting interface damage in composite materials.

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宋远佳, 张炜, 杨正伟. 振动激励条件下复合材料损伤生热的研究[J]. 强激光与粒子束, 2015, 27(4): 049001. Song Yuanjia, Zhang Wei, Yang Zhengwei. Heating research on damage of composites on condition of vibration excitation[J]. High Power Laser and Particle Beams, 2015, 27(4): 049001.

振动激励条件下复合材料损伤生热的研究

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