1.1 This standard deals with methods tor check-ing the overall performance of ultrasonic flaw detection equipment along with the probe.
1.2 This standard provides practical guidance for evaluation of some of the parameters of ultrasonic flaw detection equipment which strongly influence the integrity of flaw detection and assessment, ft may be noted here that while some parameters depend only upon the probes, some others depend only upon flaw detector and the remaining parameters depend both upon the probes and flaw detector.
NOTE — More accurate assessment of the sound field ( or at least a more direct one ) is possible by using laboratorv equipment, such as, beam plotters or simple optical ( Schlieren ) visualizer. Such methods are, however, regarded as beyond the scope of this standard.
1.3 This standard applies to compressional and shear-wave probes used in contact scanning but not to probes used in immersion testing tech-niques for which more complex checks are required.
1.4 This standard does not cover general and environmental testing of ultrasonic flaw detection equipment.
IS 12666-1988 history
1990IS 12666-1988 Performance evaluation method of ultrasonic flaw detection equipment