ABSTRACT
The ability of ultrasonic waves to travel in a web direction over a minimum time for composites was advanced by the author in 1966 [1]. This effect can be used for different applications in composites, ceramics, and metal alloys [2,3]. Nondestructive evaluation of the material properties of a structure makes this method very useful. Research has been conducted to determine the modulus of elasticity of high-speed turbine blades [4].
