2E5-2 Laser Ultrasound Technique for Material Characterization of Thermal Sprayed Coatings(Physical Acoustics, Acousto-Optics II, Ocean Acoustics)

Abstract

This research focused on characterization of mechanical properties in Nickel-Aluminum coating with different thermal technique and processing parameters at high temperature environment up to 295℃. With the laser ultrasound technique (LUT), guided acoustic waves are generated to propagate on the Ni-Al sprayed coatings. By measuring dispersive phase velocity followed by SCE-UA inversion algorithm. The Young's modulus of coatings which fabricated by HVOF technique is higher than APS technique.