In Situ Investigation of Wear of Materials by a Real-Time Laser Speckle Technique

本研究的目标是开发和演示一种新的实时激光技术，用于滑动接触处变形的原位分析。这种特殊的激光技术产生多个干涉图案，看起来像精细的，随机分布的“斑点”，用于指纹表面上所有点的位置。然后用简单的摄影方法记录这些点的塑性变形运动，并作为接触面上物质流动的检测。

The goal of this research is to develop and demonstrate a new real-time laser technique for the in-situ analysis of deformation at sliding conacts. This special laser technique produces multiple interference patterns appears as fine, randomly distributed "speckles" which serve to fingerprint the positions of all points on the surface. The movement of such points by plastic deformation is then recorded by simple photographic methods, and serves as detection of material flow on the contact surface.