Analysis of optical measurements of SIF and singularity order in rocket motor geometry

Che-way Chang

doi:10.1117/12.49545

1 December 1991 Analysis of optical measurements of SIF and singularity order in rocket motor geometry

Che-way Chang

Proceedings Volume 1554, Second International Conference on Photomechanics and Speckle Metrology; (1991) https://doi.org/10.1117/12.49545
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

A series of frozen stress experiments were conducted on a rocket motor grain geometry containing a natural surface flaw of varying aspect ratios in order to study the stress intensity factor distribution along the flaw border and to estimate the loss of the inverse square root singularity when the crack border intersects the inner star surface at right angles. By applying a refined optical method, the photoelastic data are converted into classical stress intensity factors resulting from the three dimensional stress state existing at the inner surface to indicate the nearly uniform distribution of the stress intensity factors along the crack border.

Citation Download Citation

Che-way Chang "Analysis of optical measurements of SIF and singularity order in rocket motor geometry", Proc. SPIE 1554, Second International Conference on Photomechanics and Speckle Metrology, (1 December 1991); https://doi.org/10.1117/12.49545

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