NDLI: Experimental and Numerical Study on Residual Strength of Honeycomb Sandwich Composite Structure after Lightning Strike

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Experimental and Numerical Study on Residual Strength of Honeycomb Sandwich Composite Structure after Lightning Strike

Content Provider	MDPI
Author	Wang, Yongwei Zhou, Deng Yan, Gang Wang, Zhuangjie
Copyright Year	2022
Description	Honeycomb sandwich composite structures are widely used in various aircraft structures due to their unique performance. However, honeycomb sandwich composite structures are prone to lightning damage that threatens the structure safety. Therefore, it is necessary to assess the residual mechanical properties of honeycomb sandwich composite structures after a lightning strike. In this study, simulated lightning strike tests were first conducted for honeycomb sandwich panels with and without carbon nanotube film (CNTF) to obtain different damage scenarios and study the protection effect of CNTF. Then, the residual compressive strength of the panels with lightning strike damage was predicted using a progressive damage analysis method and verified with the experimental results. It was found that the numerical prediction results agree with the experimental results. The size and extent of lightning damage have an important effect on the compression damage mode of honeycomb sandwich panel with closed edges.
Starting Page	158
e-ISSN	22264310
DOI	10.3390/aerospace9030158
Journal	Aerospace
Issue Number	3
Volume Number	9
Language	English
Publisher	MDPI
Publisher Date	2022-03-14
Access Restriction	Open
Subject Keyword	Aerospace Honeycomb Sandwich Composite Structures Simulated Lightning Strike Tests Residual Compressive Strength Progressive Damage Analysis Compression Damage Mode
Content Type	Text
Resource Type	Article

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