TY  - CONF
A1  - Chaudhuri, Somsubhro
T1  - Thermography-Assisted Mechanical Testing of Cold-Spray (AM) Repair
N2  - Cold Spray Additive Manufacturing (CSAM) is a solid-state process that is being increasingly used for structural repairs in aerospace and energy sectors. It enables the deposition of dense material at low temperatures by accelerating metal particles to supersonic velocities, thereby reducing thermal distortion. However, the structural integrity of CSAM repairs—particularly at the interface between the deposited layer and the substrate—remains a critical concern. Various post-treatments and characterization methods have been explored to optimize performance. While X-ray Computed Tomography (XCT) is effective for sub-surface inspection, it cannot be applied in situ during mechanical testing. Digital Image Correlation (DIC), a surface-based method, also lacks sub-surface sensitivity. To address this, Infrared Thermography (IRT) was employed alongside DIC during the tensile and fatigue testing of aluminum CSAM-repaired specimens. A cooled IRT camera operating at 200 FPS captured thermal data, with lock-in processing subsequently applied in post-processing. IRT successfully detected early interfacial damage and enabled the tracking of crack propagation, which was later confirmed through fracture surface analysis.
T2  - Advanced Infrared Technology and Applications (AITA) 2025
CY  - Kobe, Japan
DA  - 15.09.2025
KW  - Thermography
KW  - Thermografie
KW  - Thermal stress analysis
KW  - Cold spray
KW  - Damage detection
PY  - 2025
AN  - OPUS4-64227
LA  - eng
AD  - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER  -