Cryogenic interlaminar damage detection of glass fiber-reinforced polymers under Mode II loading by inverse magnetostrictive effect

Abstract Glass fiber-reinforced polymer (GFRP) combined with magnetostrictive sensors has gained significant interest for its ability to convey structural health data during operation without needing physical attachment to a data probe (non-contact monitoring). In this paper, we investigated the self-detection ability of interlaminar damage in GFRP composites using magnetostrictive Fe–Co alloys under Mode II loading at 25 °C and −196 °C. The magnetic flux density for both specimens increased with the load and changed rapidly with crack propagation at 25 °C and −196 °C. Measuring the magnetic flux density enabled the self-detection of Mode II interlaminar damage at −196 °C through the inverse magnetostrictive effect.