SYMPOSIA PAPER
Published:
01 January 1976
STP28660S
A Laser Interferometry Method for Experimental Stress Intensity Factor Calibration
SourceA laser interferometry crack tip opening displacement measurement technique has been developed and is described here. This interferometric displacement gage was used to measure displacements near the crack tip in flawed specimens. Measured displacements were then converted to stress intensity factor calibration curves by means of the linear elastic fracture mechanics displacement equations. Application of this procedure to compact and edge-cracked aluminum specimens resulted in experimental stress intensity factor calibrations that agreed well with theoretical predictions for these two geometries.
Author Information
Macha, DE
Air Force Materials Laboratory, Wright-Patterson Air Force Base, Ohio
Sharpe, WN
Michigan State University, East Lansing, Mich.
Grandt, AF
Air Force Materials Laboratory, Wright-Patterson Air Force Base, Ohio
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Details
Developed by Committee: E08
Pages: 490–505
DOI: 10.1520/STP28660S
ISBN-EB: 978-0-8031-4676-1
ISBN-13: 978-0-8031-0318-4