A new type of acoustic microscope has been demonstrated by prof. b. t.khuri-yakub at stanford university, working under an air force grant. this microscopy utilizes special wide aperture ultrasonic transducers designed and built by the proposer, and makes use of a surface wave effect on the sample… More

Their outstanding physical properties are causing ceramics to become important structural materials. their susceptibility to failures initiated by very small defects has led to a need for high resolution flaw detection. existing techniques have not demonstrated adequate ability to detect dangerous… More

Ultrasonic nde systems suffer a major difficulty which prevents their use in many interesting applications. this is, of course, the necessity of providing a fluid coupling to the sample being inspected. this prevents the use of these systems in very hot environments, or where the materials being… More