Autonomous stress imaging cores: from concept to reality

Stephen van der Velden; Nik Rajic; Chris Brooks; Steve Galea

doi:10.1117/12.2219003

Abstract

The historical reliance of thermoelastic stress analysis on cooled infrared detection has created significant cost and practical impediments to the widespread use of this powerful full-field stress measurement technique. The emergence of low-cost microbolometers as a practical alternative has allowed for an expansion of the traditional role of thermoelastic stress analysis, and raises the possibility that it may in future become a viable structural health monitoring modality. Experimental results are shown to confirm that high resolution stress imagery can be obtained from an uncooled thermal camera core significantly smaller than any infrared imaging device previously applied to TSA. The paper provides a summary of progress toward the development of an autonomous stress-imaging capability based on this core.

Citation Download Citation

Stephen van der Velden, Stephen van der Velden, Nik Rajic, Nik Rajic, Chris Brooks, Chris Brooks, Steve Galea, Steve Galea, "Autonomous stress imaging cores: from concept to reality", Proc. SPIE 9803, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016, 98032T (20 April 2016); doi: 10.1117/12.2219003; https://doi.org/10.1117/12.2219003

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