DESIGN AND CONSTRUCTION OF AN ULTRASONIC FLAW DETECTOR IN METALS

Abstract

Described here in this project is the of the most fantastic areas of application of f J silent sounds i.e. an ultrasonic flaw detector incorporating Aural and Visual interface for fault identification in metals. Basically, this aim is being achieved with the help of an analogue an digital electronic circuit in which a short sharp pulse of a very high frequency is being applied to a piezo transducer which consequently develops a high frequency ultrasonic wave that is applied to a test piece of interest. These waves are reflected at any point of discontinuity, thus generating a fault signal larger than a preset defect standard thus actuating the LED's display and the headphone alarm. v