ISSN: 0090-3973
Page Count: 6

Origin of Burst-Type Acoustic Emission in Unflawed 7075-T6 Aluminum

Bianchetti, R
Research assistant,University of California,Calif.,

Hamstad, MA
Engineer,Lawrence Livermore Laboratory,Calif.,

Mukherjee, AK
Professor,University of California,Calif.,

Abstract

Tensile tests were used to study the acoustic emission from several 7075-T6 aluminum plates. Specimens from one plate produced a large burst-type emission in addition to the continuous emission. Metallographic and fracture surface studies indicated that the burst-type emission resulted from the brittle fracture of large (20 to 60 μm) primary inclusions in the microstructure.

Keywords:
acoustic emission, aluminum, tension tests, inclusion particles

Paper ID: JTE10518J
DOI: 10.1520/JTE10518J
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