An Innovative Method for 3-D Shape, Strain and Temperature Full-Field Measurement Using a Single Type of Camera: Principle and Preliminary Results

Jean-José Orteu 1 Y Rotrou 1 Thierry Sentenac 1 Laurent Robert 1
1 CROMeP - Centre de Recherche Outillages, Matériaux et Procédés
Abstract : An innovative technique for measuring both the shape, the displacement, the strain and the temperature fields at the surface of an object using a single stereovision sensor is proposed. The sensor is based on two off-the-shelf low-cost high-resolution uncooled CCD cameras. To allow both dimensional and thermal measurements, the sensor operates in the visible and near infrared (NIR) spectral band (0.7-1.1 μm), and a radiometric and geometric calibration of the sensor is required. This technique leads to a low-cost camera-based simplified instrumentation that gives simultaneously dimensional/kinematical and thermal field measurements.
Keywords : stereo-correlation stereovision digital image correlation (DIC) geometric camera calibration radiometric camera calibration shape measurements strain measurements temperature measurements full-field measurements 3-D metrology experimental mechanics
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Jean-José Orteu, Y Rotrou, Thierry Sentenac, Laurent Robert. An Innovative Method for 3-D Shape, Strain and Temperature Full-Field Measurement Using a Single Type of Camera: Principle and Preliminary Results. Experimental Mechanics, Society for Experimental Mechanics, 2008, 48 (2), p.163-179. ⟨10.1007/s11340-007-9071-7⟩. ⟨hal-01170373⟩

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