00000nam 2200000zi 4500 9.880802 CaOODSP 20240221113057 m o d f cr |n||||||||| 191018t20182018qucao obt f000 0 eng d CaOODSP eng rda CaOODSP n-cn--- D68-11/086-2018E-PDF Genest, Marc, author. Infrared thermography for inspection of aramid and ultra-high-molecular-weight polyethylene armor systems / Marc Genest, Simon Ouellet, Kevin Williams. Quebec (Quebec) : DRDC - Valcartier Research Centre, 2018. ©2018 1 online resource (13 unnumbered pages) : figures (some colour). text txt rdacontent computer c rdamedia online resource cr rdacarrier External Literature (N) ; DRDC-RDDC-2018-N086 "June 2018." "Can unclassified." "Thermosense 2018, Thermosense conferences, Orlando, USA; date of publication from Ext Publisher: April 2018." Includes bibliographical references. "Non-Destructive Evaluation (NDE) trials were performed on aramid and ultra-high molecular-weight polyethylene (UHMWPE) based armor systems. Pulsed thermography, continuous heating, and lock-in thermography were investigated for various types of damage. It is shown that the infrared thermography results vary significantly based on the material and thickness of the armor system, and only certain types of damage can be confidently identified. While the pulsed thermography performed in reflection mode was the fastest and provided the strongest indication signal for some types of damage, deeper damage on thicker armor system needed to be performed in transmission mode. Due to inherent material properties variations in these armor systems, the infrared images were affected by non-uniformity. In addition, due to low thermal conductivity, the inspections were sporadically affected by non-uniform heating. Approaches are presented to address the non-uniform heating issue affecting the inspection of those low thermal conductivity materials"--Abstract. gccst Sciences gccst Scientific research Ouellet, Simon, author. Williams, Kevin, author. Defence R&D Canada. Defence R&D Canada. Valcartier Research Centre. External literature (N) (Defence R&D Canada) DRDC-RDDC-2018-N086. (CaOODSP)9.858173 PDF 2.74 MB https://publications.gc.ca/collections/collection_2019/rddc-drdc/D68-11-086-2018-eng.pdf