SYMPOSIA PAPER Published: 01 January 1972
STP35389S

Use of Acoustic Emission for the Detection of Weld and Stress Corrosion Cracking

Source

This paper describes the utility of acoustic emission for the detection of weld and stress corrosion cracking. It includes a brief review of the history of acoustic emission, a selected bibliography, and the findings of two researches. It was found that a 100-ksi yield strength constructional alloy weldment produced bursts of acoustic emission for over 400 h after welding. This acoustic emission was correlated with the amount of cracking as determined by metallographic examination. With acoustic emission instrumentation, a convervative threshhold stress intensity for stress corrosion cracking was determined, based on crack propagation rather than on time to failure. A linear relationship is shown between acoustic emission count and stress intensity factor.

Author Information

Hartbower, CE
Metallurgy Section, Aerojet Solid Propulsion Company, Sacramento, Calif.
Reuter, WG
Metallurgy Section, Aerojet Solid Propulsion Company, Sacramento, Calif.
Morais, CF
Metallurgy Section, Aerojet Solid Propulsion Company, Sacramento, Calif.
Crimmins, PP
Metallurgy Section, Aerojet Solid Propulsion Company, Sacramento, Calif.
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Details
Developed by Committee: E07
Pages: 187–221
DOI: 10.1520/STP35389S
ISBN-EB: 978-0-8031-4611-2
ISBN-13: 978-0-8031-0116-6