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- W2143719580 abstract "Selected tensile tests on balanced, adhesively bonded double-lap joints (DLJ) made from pultruded glass-fibre-reinforced, polymer-matrix (GFRP) flat profiles have been monitored with acoustic emission (AE) for an assessment of damage initiation and accumulation. The thickness was 10 mm for the inner and 5 mm for the two outer profiles. Three different bond-line thicknesses of the adhesive bond (nominally 0.3, 0.5 and 1.0 mm), all with an overlap length of 100 mm, were tested. The usual AE signal parameter set was recorded with four AE sensors (either of type SE-45H or SE-150M) from three tests each per DLJ type. AE sensors were mounted above and below the adhesive bond with duct tape using a silicone-free coupling agent. Sensor coupling was checked before and after the tensile tests to stress levels around 70% to 97% of the effective ultimate tensile strength. Both, the auto-calibration function of the AE equipment and pencil-lead breaks (Hsu-Nielsen sources) applied at different locations on the joints were used for checking sensor coupling. Transient AE waveforms were recorded during the auto-calibration with 5 MHz sampling rate. This effectively constitutes acousto-ultrasonic (AU) testing of the DLJ before and after loading. AU results will be compared with the assessment of damage accumulation from AE analysis based on AE activity, intensity and source location." @default.
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- W2143719580 date "2008-01-01" @default.
- W2143719580 modified "2023-09-27" @default.
- W2143719580 title "Acoustic emission analysis and acousto-ultrasonics for damage detection in GFRP adhesive joint" @default.
- W2143719580 hasPublicationYear "2008" @default.
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