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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.
Research assistant, University of California, Davis, Calif.
Engineer, Lawrence Livermore Laboratory, Livermore, Calif.
Professor, University of California, Davis, Calif.
Stock #: JTE10518J