Studying the anisotropy of the KDP crystal processing in theory and experiment, the results had shown that the surface mechanical properties and surface roughness of ultra-precision machining KDP crystal shown a strong anisotropic properties, and concluded that: 1. Applicating the elasticity and crystal physics theory, calculated the elastic modulus and shear modulus on the (100) crystal plane of KDP crystal, it showed that they both exert anisotropic properties and cyclical fluctuations, and four periods fluctuations in a cycle. 2. Through the experiment of ultra-precision machining and mechanical characteristics, it was concluded that elastic modulus, hardness, residual stress and surface roughness which are on the (100) crystal plane of KDP crystal all showed anisotropic properties, and the variation is consistent with the theoretical calculation. The study on the anisotropy of KDP crystal has important theoretical and practical significance on improving the surface quality and ultra-precision machining removal mechanism.

Date Published: 6 October 2010
PDF: 5 pages
Proc. SPIE 7655, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 76552U (6 October 2010); doi: 10.1117/12.866052

Published in SPIE Proceedings Vol. 7655:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies
Li Yang; Yoshiharu Namba; David D. Walker; Shengyi Li, Editor(s)