Search results for "Crack-growth monitoring"

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Quantitative thermoelastic stress analysis by means of low-cost setups

2020

Abstract A low-cost Thermoelastic Stress Analysis (TSA) experimental setup is proposed which uses an ordinary micro-bolometer and in-house developed signal processing scripts. The setup is evaluated by analysing the thermoelastic signal from a tensile and a SENT specimen made of stainless steel AISI 304L, and the bolometer performances are compared with those of a state of the art photon detector. Signal processing is based on off-line cross-correlation, using a self-reference signal which is retrieved from the acquired thermal data. Procedures are in particular developed to recognise, quantify and correct errors due to spectral leakage and loss of streamed frames. The thermoelastic signal …

Signal processingMaterials scienceMicro-bolometersAcoustics/dk/atira/pure/subjectarea/asjc/2500/2504/dk/atira/pure/subjectarea/asjc/2200/2208Crack-growth monitoringThermoelastic stress analysis02 engineering and technologyFatigue testing01 natural sciencesSignallaw.invention010309 opticsSettore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchineThermoelastic dampingData acquisitionlaw0103 physical sciencesCalibrationElectrical and Electronic EngineeringSpectral leakageStress intensity factorSignal processing/dk/atira/pure/subjectarea/asjc/3100/3107Mechanical EngineeringBolometer021001 nanoscience & nanotechnologyAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsIR-thermography/dk/atira/pure/subjectarea/asjc/2200/22100210 nano-technology
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