Abstract
An automated system capable of visually detecting the two dimensional location of a crack in metal is presented. A peak-detection algorithm is applied to the thermoelastic signal component caused by heat diffusion, obtained from thermoelastic stress analysis using an industrial microbolometer, which is mounted on motion stages, allowing two dimensional tracking of the crack. The system is experimentally validated on coupons under constant amplitude loading, with the crack tip location estimates compared against measurements from an optical microscope. The system is also applied to monitoring crack growth on a geometrically complex section of an aircraft wing under representative flight-spectrum loading.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
