Stress measurements in glass using the method of thermal gratings

Bret D. Cannon, Chester Shepard, Mohammad Khaleel

Research output: Contribution to journalConference articlepeer-review

Abstract

We developed a non-destructive and non-contact method for measuring stress at the mid-plane of tempered glass plates that uses Bragg scattering from a pair of thermal gratings. These gratings are formed by 1064 nm beams from a seeded Nd:YAG laser and we measure the polarization state of light from a 532 nm beam that scatters from both these thermal gratings. The change in polarization of the doubly scattered light with separation between the two gratings allows measurement of the in-plane stress. Stress measurements are reported.

Original languageEnglish
JournalSAE Technical Papers
DOIs
StatePublished - 2002
Externally publishedYes
EventInternational Body Engineering Conference and Exhibition and Automotive and Transportation Technology Conference - Paris, France
Duration: Jul 9 2002Jul 11 2002

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