| German |

Abstract:
Quick Flaw Evaluation in Ultrasonic Testing
Using Microprocessor Assisted Methods

Author: Dipl. Phys. Michael Berke

Abstract:

Even the commonly used flaw evaluation methods can be considerably simplified by the use of microprocessor controlled ultrasonic instruments. This results in advantages such as saving of time and increased test reliability.

In nondestructive ultrasonic testing of materials, high frequency sound pulses (approx. 1 to 10 MHz) are beamed into the workpiece to be tested by means of a probe. The sound is reflected from internal non homogeneities, e.g. a flaw in the material. These sound reflections are again received by the probe and processed in the ultrasonic instrument. This is followed by the evaluation of the signals (echoes), viz. with the standard methods on the basis of acoustic time of flight and amplitude.

Table of contents |Full Text|

Two methods

The DGS method.

Procedure

Electronic DGS evaluation