First Measurements from a New Broadband Vibrothermography Measurement System

Stephen D. Holland
2007 AIP Conference Proceedings  
Synergistic co-processing/co-cracking of Jatropha oil, petroleum vacuum residue, and high density polyethylene J. Renewable Sustainable Energy 4, 043112 (2012) Thermally-induced first-order phase transition in the (FC6H4C2H4NH3)2[PbI4] photoluminescent organicinorganic material J. Appl. Phys. 111, 053521 (2012) The study of loss kinetics of current carriers in copper-indium-gallium selenide by microwave photoconductivity method J. Renewable Sustainable Energy 4, 011604 (2012) Thermal-structural
more » ... analysis of electron gun with control grid Rev. Sci. Instrum. 83, 024701 (2012) Nanoscale range finding of subsurface structures by measuring the absolute phase lag of thermal wave Rev. Sci. Instrum. 81, 053701 (2010) Additional information on AIP Conf. Proc. ABSTRACT. We report on the construction and development of a broad-spectrum vibrothermography (Sonic IR) measurement system at the Center for NDE. The new system uses a broadband actuator instead of an ultrasonic welder to generate vibration and induce heating of cracks. A high-resolution infrared camera captures the IR signature of a crack, and a reconfigurable data acquisition software system acquires and processes the IR images and vibrometry waveforms in real time. We present and discuss results from initial experiments with this system, including the frequency dependence of vibrothermographic heating of flaws in a jet turbine stator vane and an analysis of the correlation of heating with vibration frequency in a cracked test specimen.
doi:10.1063/1.2718010 fatcat:qoaw2imvgjardowvtxf5aljwue