Conditions for mechanical (deformation) twinning of electromagnetic window materials

K. Peter D. Lagerloef

doi:10.1117/12.277052

27 June 1997 Conditions for mechanical (deformation) twinning of electromagnetic window materials

K. Peter D. Lagerloef

Proceedings Volume 3060, Window and Dome Technologies and Materials V; (1997) https://doi.org/10.1117/12.277052
Event: AeroSense '97, 1997, Orlando, FL, United States

Abstract

Impact and thermal stresses can cause severe damage during use of single crystal electromagnetic window materials. In addition to cracks and plastic flow, deformation twinning can be activated at relatively low temperatures. However, because of the crystallographic nature of deformation twins, i.e., twins can only form on specific plans with a deformation shear in well defined crystallographic directions, proper choice of the crystalographic orientation can limit the amount of deformation twinning induced during use of a single crystal electromagnetic window or dome. The conditions to activate deformation twinning of several single crystal window materials are analyzed, and the implications on window design are discussed.

Citation Download Citation

K. Peter D. Lagerloef "Conditions for mechanical (deformation) twinning of electromagnetic window materials", Proc. SPIE 3060, Window and Dome Technologies and Materials V, (27 June 1997); https://doi.org/10.1117/12.277052

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