Browsing by Author "Harris, RW"

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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    Hot-wire anemometry techniques for an automated turbulence measurement rig.
    (Australian Atomic Energy Commission, 1982-03) Hooper, JD; Harris, RW
    An automated rig has been constructed to allow continuous monitoring of the probe steady-state calibration during the measurement of the Reynolds stress tensor in turbulent single-phase flow using a two-channel hot-wire anemometer. The system consists of a signal switching and signal gain control unit, remote probe positioning along three coordinates, and a PDP11/10 computer for on-line data analysis. The system was calibrated using fully developed single-phase turbulent pipe flow; the results showed good agreement with published data. The calibrated system had been used to map the Reynolds stress field in three-dimensional duct flows having a similar turbulence level to developed pipe flow.