Stephan Offermann, Christian Bissieux, Jean Louis Beaudoin
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Statistical treatment applied to infrared thermoelastic analysis of applied and residual mechanical stresses
Very small temperature variations are quantified by a statistical treatment of standard infrared equipment images. This procedure determines the signal amplitude value, comparing the noise and the noisy signal dispersions characterized by their variances. This robust and simple method has the advantage of needing no link to the reference signal and of treating any kind of signal shape. It is applied here to thermoelastic analysis of applied and residual stresses.
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