Stochastic lightning damage prediction of carbon/epoxy composites with material uncertainties
| Autor: | S.Z.H. Shah, Juhyeong Lee |
|---|---|
| Přispěvatelé: | Elsevier Ltd |
| Rok vydání: | 2022 |
| Předmět: |
Void (astronomy)
Materials science Gaussian Composite number chemistry.chemical_element Epoxy Random property generation Lightning symbols.namesake chemistry Electrical resistivity and conductivity visual_art Metallurgy Lightning damage prediction Ceramics and Composites visual_art.visual_art_medium symbols Thermal damage Carbon/epoxy laminates Composite material Carbon Civil and Structural Engineering |
| Zdroj: | Mechanical and Aerospace Engineering Faculty Publications |
| ISSN: | 0263-8223 |
| DOI: | 10.1016/j.compstruct.2021.115014 |
| Popis: | This study presents a novel stochastic modeling framework predicting lightning thermal damage in carbon/epoxy composites. The stochastic lightning damage model (SLDM) was developed with random distributions of composite’s electrical conductivity and void. The Box-Muller transformation was applied to generate random in-plane and through-thickness electrical conductivities with Gaussian distributions. The SLDM suggested that the predicted lightning thermal damage to carbon/epoxy composites increased slightly with the use of stochastic electrical conductivity, but the presence of voids did not significantly affect the damage development. The predicted size and shape of lightning thermal damage agreed fairly well with experimental results. In addition, the proposed SLDM was first capable of predicting asymmetric lightning damage to carbon/epoxy composites, which was not demonstrated by conventional (deterministic) lightning damage models. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect