Исследование распространения теплового фронта и деформаций в металлической пластине при воздействии лазерного импульса и механического удара

Abstract

In this work, we studied the propagation of heat and thermal deformations in a thin metal plate (stainless steel plate) arising under the action of a laser pulse. Visualization of heat propagation and thermal deformations was carried out using a thermal imager and a thermo-mechanoluminescent composite material prepared on the basis of a polymer and phosphor powder. A thin layer of composite material sensitive to temperature and deformations was applied to the surface of the plate under study. The thermoluminescence of the composite layer was used to determine the rate of heat propagation in the plate. Deformations as a result of impact and punching of the plate by a bike with a conical tip were investigated. The visualization of plate deformations arising in the process of punching was carried out by mechanoluminescence of the composite layer deposited on the plate surface. It is shown that the obtained composite material allows to visualize with good spatial and temporal resolution the propagation speed and temperature distribution in the area of laser pulse effect and mechanical stresses and deformations in the area of metal plate fracture (rupture) during impact action.