Acoustic emission and microcracking in ice

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ConferenceProceedings 1982 SESA/Japan Society for Mechanical Engineers: 23 May 1982, Oahu-Maui, Hawaii, USA
VolumePart II
Pages767772; # of pages: 6
Subjectice; microfissures; crackings (breaking); acoustics; compressive strength; cracking activity; acoustic emission recording; locator system; deformation measuring system; stress; strain; strain rate
AbstractCracking activity in ice has been monitored visually and by recording acoustic emissions. A locator system composed of two detectors and a deformation measuring system utilizing two gauges was used. The onset of low amplitude acoustic emissions was observed to precede very closely the onset of visible cracks giving relatively large signals. The strain and stress rate dependence of the stress level for the onset of acoustic emissions associated with visible cracks is discussed and correlated with the rate sensitivity of tensile strength; and the dependence of acoustic emission rate on time, stress, strain and strain rate is examined.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number20610
NPARC number20375677
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Record identifier247e62ef-c582-4e9d-a4cd-79a23e76dd02
Record created2012-07-23
Record modified2016-05-09
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