Thermal strain measurement by one-beam laser speckle interferometry.
A method of one-beam laser speckle interferometry was applied to the measurement of transient thermal strain fields in an aluminum plate heated at a small region. A ruby pulse laser minimized the effect of thermal air turbulence on speckle correlation. High quality isothetic fringe patterns were obtained. The result compares well with available existing data.
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Chiang
R
R
Anastasi
J
J
Beatty
J
J
Adachi