ACOUSTIC EMISSION FROM CRACK GROWTH IN 7050 ALUMINUM AND 7075 ALUMINUM AS A FUNCTION OF TEMPERATURE AND HEAT TREATMENT

Authors
  1. McBride, S.L.
  2. Hong, Y.
Corporate Authors
Defence Research Establishment Pacific, Victoria BC (CAN);Royal Military Coll of Canada, Kingston ONT (CAN)
Abstract
In this work the acoustic emmission behaviour 7050 and 7075 aluminium is investigated. It is shown that, although the materials are chemically and mechanically very similar, their acoustic emission behaviours are very different. The amplitude and number of acoustic emissions due to fatigue crack growth in aluminium alloy (which does not have significant inclusion content) exceeds those for 7075 aluminium alloy (which has a significant inclusion content). The incluence of inclusions on the relationship between acoustic emission behaviour and strain energy release rate is discussed.
Keywords
Strain energy release rate
Report Number
DREP-CRS-93-15 — Contractors Report Series
Date of publication
01 Feb 1993
Number of Pages
14
DSTKIM No
94-01128
CANDIS No
130746
Format(s):
Hardcopy;Originator's fiche received by DSIS

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