Slush-skin Thickness Measurements with Terahertz Time-Domain Spectroscopy

Dashboards of modern vehicles are often covered with PVC skins, which are sometimes made of two layers. To ensure safe airbag deployment in case of a crash, their individual layer thicknesses must be measured non-destructively directly after manufacturing. For this purpose, we have developed a terahertz time-domain spectroscopy system with a hand-held reflective measurement head.