Characterization of acoustic emission signals from fatigue fracture Academic Article

abstract

• This paper discusses a comprehensive study that is developing a quantitative understanding of the acoustic emission (AE) signals that emanate from fatigue cracks. Two critical components of this study are the development of a transfer function that quantifies and removes geometric effects from a measured AE waveform and an experimental program that monitors and identifies AE signals that occur during the fatigue of cylindrical stainless steel specimens under torsion. Typical waveforms are collected during torsional fatigue and correlated with fracture mechanisms from different stages of testing. Three stages of fatigue are identified by AE waveform characterization and confirmed by microscopic replica observation. The other portion of this study demonstrates the effectiveness of using laser ultrasonic techniques to develop transfer functions to quantify and remove geometric effects from measured acoustic emission waveforms.

authors

• Hurlebaus, Stefan

published proceedings

• PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE

author list (cited authors)

• Shi, Z., Jarzynski, J., Bair, S., Hurlebaus, S., & Jacobs, L. J.

citation count

• 6

complete list of authors

• Shi, Z||Jarzynski, J||Bair, S||Hurlebaus, S||Jacobs, LJ

publication date

• September 2000

publisher

• SAGE Publications  Publisher

published in

• Proceedings of the Institution of Mechanical Engineers Part C: Journal of Mechanical Engineering Science  Journal

keywords

• Acoustic Emission
• Torsion Fatigue
• Transfer Function

Digital Object Identifier (DOI)

• 10.1243/0954406001523588

start page

• 1141

end page

• 1149

volume

• 214

issue

• 9

URL

• http%3A%2F%2Fdx.doi.org%2F10.1243%2F0954406001523588