The article explores how rolled aluminium plates behave when penetrated at low speeds. The researchers conducted tests and simulations to understand the physical processes involved. They developed a method to measure plate deformations during impact, which helps validate computer models. By testing different plate thicknesses and punch shapes, they found out how these factors affect the force needed to penetrate the plate. The simulations accurately predicted the experimental results. Additionally, the researchers evaluated methods to determine the properties of metallic materials, which can be useful for designing structures that can withstand impact.