Reprography method of nondestructive testing of micro-cracks inside the wall of a pinhole micromanufactured by laser

摘要

A new method of reprography and detection employing scan electron microscope for the non-destructiveness testing the micro-cracks with width about 1 $mu@m on the inner surface of the pinhole has been presented in this paper. The results show that the new method is a feasible approach to test the micro-cracks of the inner surface of the pinhole with sub- millimeter aperture.