Developing Test Methods for Compression after Lightning Strikes

• DOI: 10.1007/s10443-022-10100-w
• Publication Date: 2023-01-25T04:41:26Z
• Authors: Xiaodong Xu; Scott L. J. Millen; Juhyeong Lee; Gasser Abdelal; Daniel Mitchard; Michael R. Wisnom; Adrian Murphy
• Keywords: Lightning; Residual strength; Compression test; Peak current

Abstract Research into residual strength after lightning strike is increasing within the literature. However, standard test methods for measuring compressive strikes do not exist. For first time, a systematic experimental study undertaken to evaluate modifications necessary Compression After Impact (CAI) specimen geometry and jig design induce failure at damage region. Four laboratory generated currents with peak amplitudes ranging from 25 100 kA have been studied. Test set-up were made considering scale of its potential proximity edges. Specimen anti-buckling guides adjusted each current damage. The Lightning (CAL) was 28% lower than pristine CAI even relatively low kA. This shows that setup has CAL application, however, careful are required depending on amplitude applied waveform.