64229 2025 eng 1 5 1 129 conferenceobject MDPI Basel 0 -- -- -- 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. This extended abstract presents findings from fatigue tests using IRT. AITA 2025 10.3390/proceedings2025129018 urn:nbn:de:kobv:b43-642299 true proceedings-article https://creativecommons.org/licenses/by/4.0/ crossref 18th International Workshop on Advanced Infrared Technology and Applications (AITA 2025) Kobe, Japan 15.09.2025 19.09.2025 doi-import false true Creative Commons - CC BY - Namensnennung 4.0 International Somsubhro Chaudhuri Sruthi Krishna Kunji Purayil Julius Kruse Mauro Madia Sören Nielsen eng uncontrolled Thermography deu uncontrolled Thermografie eng uncontrolled Thermal stress analysis eng uncontrolled Cold spray eng uncontrolled Damage detection Ingenieurwissenschaften und zugeordnete Tätigkeiten 8 Zerstörungsfreie Prüfung 8.3 Thermografische Verfahren Material Degradationsmechanismen Verlagsliteratur Datei für die Öffentlichkeit verfügbar ("Open Access") Wissenschaftliche Artikel der BAM Bundesanstalt für Materialforschung und -prüfung (BAM) https://opus4.kobv.de/opus4-bam/files/64229/proceedings-129-00018.pdf