Indicating and measuring very small deformations in components - illuminating surface with monochromic light, with flat piece of glass applied and evaluating interference lines

摘要

The method of measuring and/or making visible small component deformations involves using interference. A flat piece of glass (28) is placed onto a flat surface of the component (18) which is then illuminated with monochromatic light. The component is then subjected to a force or to forces and the resulting interference lines are evaluated. The flat surface can be made on the component or a body with a flat surface can be stuck onto it. USE/ADVANTAGE - Enables very small (e.g. in micron range and below) deformations to be measured, e.g. on polished surfaces for axial face seals of pressure chambers.