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Browsing Scientific and Technical Reports by Subject "Acoustic emission testing"

Now showing 1 - 4 of 4
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    Acoustic emission and failure prediction for pressurisation experiments on helicopter air bottles
    (Australian Atomic Energy Commission., 1980-11) Brown, KR; Harris, RW
    Two spherical high pressure bottles of high-tensile steel were pressurised to destruction to evaluate acoustic emission monitoring as a non-destructive test on similar bottles. One bottle was tested with an artificially introduced defect of sufficient size to reduce the failure pressure to the proof-test pressure; the other contained no flaws. In neither bottle was sufficient acoustic emission detected to enable monitoring to be of value for non-destructive testing.
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    Acoustic emission monitoring of a steam receiver pressurised to failure.
    (Australian Atomic Energy Commission, 1978-04) Brown, KR; Harris, RW; Wood, BRA
    Australian Atomic Energy Commission and the Australian Welding Research Association have conducted acoustic emission monitoring of a large defective pressure vessel during pressurisation to failure. Using acoustic emission source location equipment, it was possible to locate, in real time, areas of high activity. Later, fractographic examination of the failed vessel indicated that failure had initiated at the area of highest activity and this area was identified well before failure occurred.
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    Acoustic emission monitoring of a steel bifurcate at Dartmouth Dam
    (Australian Atomic Energy Commission, 1978-02) Harris, RW; Brown, KR; Wood, BRA
    At the invitation of the State Rivers and Water Supply Commission of Victoria, the Australian Atomic Energy Commission conducted acoustic emission monitoring during the proof testing of a large steel bifurcate on the outlet of the Dartmouth Dam under construction on the Mitta Mitta River in Victoria. No indications of defects or local yielding were recorded during pressure testing by the acoustic emission equipment. This result was supported by extensive strain gauging which had been conducted by the Snowy Mountains Engineering Corporation.
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    Application of acoustic emission monitoring to pressure tests of a steam receiver vessel with flawed nozzle welds.
    (Australian Atomic Energy Commission, 1976-01) Woodward, B; McDonald, NR; Hincksman, MJ
    As part of the first stage of an Australian Welding Research Association co-operative research project, acoustic emission monitoring has been applied to a steam receiver vessel withdrawn from service owing to severe weld cracking. This technique is used to check acceptance standards for defects in nozzle welds and to apply modern methods of assessing the integrity of pressurised plant. Acoustic emission monitoring has been used, together with strain gauge measurements and ultrasonic scanning, to detect the occurrence of any significant defect growth during cyclic pressurisation of the vessel. During this first stage, no significant defect growth has been produced by 1000 cycles of pressure up to 24.1 MPa (3500 psi), subsequent pressurisation up to 35.8 MPa (5200 psi), or 97 per cent of the expected yield stress of the vessel shell. The small amount of acoustic emission detected was consistent with this result.