MODELING LIGHTNING STRIKE DAMAGE IN CFRP COMPOSITES | ||||
| The International Conference on Applied Mechanics and Mechanical Engineering | ||||
| Article 79, Volume 18, 18th International Conference on Applied Mechanics and Mechanical Engineering., April 2018, Page 1-9 PDF (2.16 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/amme.2018.35025 | ||||
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| Author | ||||
| Lin Ye | ||||
| Professor, School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, NSW, Australia. | ||||
| Abstract | ||||
| ABSTRACT Carbon Fiber Reinforced Plastics (CFRP) composites are widely used in modern airplanes to replace conventional metal alloys due to their high strength, high stiffness and light weight. Compared to their metallic counterparts, CFRP composites are vulnerable to lightning strike, and thus Lightning Strike Protection (LSP) system is required. In this work, a coupled thermal-electrical Finite Element (FE) model was used to predict thermal damage in CFRP composites with and without LSP systems during a lightning strike. Pyrolysis of polymer matrices and dielectric breakdown of the insulating layer in LSP system were considered. In addition, lightning strike induced mechanical damage in CFRP composites with a full thermal-electrical protection was determined using a mechanistic FE analysis together with a plasma expansion model, considering different failure phenomena, such as intralaminar damage and interlaminar delamination. | ||||
| Keywords | ||||
| Lightning Strike Damage; CFRP Composites; FE Modeling; Thermal-electrical transition; Plasma expansion | ||||
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