Abstract
An ultrasonic technique is described for continuously monitoring fatigue-crack growth at temperatures up to 300°C in wedge-opening-load type fracture-toughness specimens. The sound-wave energies reflected from the leading edge of the fatigue crack and from the bottom surface of the specimen are electronically compared and used to control the crack-measurement system.
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References
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Jeglic, F., Niessen, P. & Burns, D.J. Ultrasonic detection of high-temperature fatigue-crack growth. Experimental Mechanics 11, 82–85 (1971). https://doi.org/10.1007/BF02320625
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DOI: https://doi.org/10.1007/BF02320625