METHOD AND DEVICE FOR ABRASION DETERMINATION

摘要

A method and a device for determination of abrasive forces, wherein at least two distinguishable layers, which are removable by scraping, are applied on a substrate one on top of the other and so as to cover one another. In addition, each layer is associated with a predetermined abrasive force required to penetrate and remove the layer by scraping, and this strength is smaller the closer to the surface that the layer is positioned. When the layers are subjected to abrasive forces, parts of the applied layers are scraped off, starting from the outermost layer and further downwards into the underlying layers, and thus one of the layers is laid bare (exposed) at each point, which indicates the abrasive force at that point. The thus exposed surface of each layer may then be identified. The method and the device are particularly suitable in car-crash testing in order to assess the abrasive forces arising from e.g. airbags.