E. A. Medina, Radiance Technologies, Inc., Dayton, OH; K. V. Jata, Air Force Research Laboratory, Wright-Patterson AFB, OH; S. A. Martin, NDE Computational Consultants, Dublin, OH
In integrated vehicle health monitoring and materials damage assessment it is not clearly known how sensitive the damage detection capability will be to changes in material characteristics which may be due, for example, to heat exposure. Additional effects on the damage detection capability can also arise due to other external factors; however, they will not be examined here. This study investigates the influence of heat treatment on damage detection capability through a comparison of wave propagation and vibration characteristics of thermally soaked specimens with those of baseline measurements. A set of Titanium and Aluminum specimens was utilized in these experiments. For each specimen, ultrasonic velocity, and dynamic vibration characteristics were measured before and after each thermal exposure.
Summary: Wave propagation and vibration characteristics measurements were compared between various thermally exposed and baseline specimens of Titanium and Aluminum alloys to understand how the wave propagation and vibration characteristics are affected by heat treatment.
