USE OF ULTRASONIC TESTING IN THE STRUCTURAL STEEL INDUSTRY

ULTRASONIC THEORY AND ULTRASONIC WELD TESTING TECHNIQUES ARE DISCUSSED. THE QUALITY OF A WELD CAN BE DETERMINED WITH ULTRASONIC TESTS. HOWEVER, THE RELIABILITY OF A WELD IS ESTABLISHED FROM DESTRUCTIVE TESTING OR WELDING HISTORY. ULTRASOUND CAN BE TRANSMITTED DIRECTLY INTO A STRUCTURE OR INTO IT AT AN ANGLE. BECAUSE ITS VELOCITY IN A STEEL MEMBER CAN BE MEASURED AND SINCE THE DIMENSIONS OF THE TEST PIECE CAN ALSO BE MEASURED, IT IS POSSIBLE TO ACCURATELY LOCATE A DISCONTINUITY WITHIN A GIVEN STRUCTURE OR WELD. METHODS USED TO INSPECT VARIOUS TYPES OF WELDS ARE DISCUSSED AND DEPICTED. SOME LIMITATIONS ARE SHOWN TO ULTRASONIC INSPECTION DEPENDENT ON FLAW ORIENTATION AND WELD CONFIGURATION. RADIOGRAPHY, MAGNETIC PARTICLE, AND PENETRANTS HAVE BEEN USED IN WELD TESTING FOR MANY YEARS AND ARE STILL THE PRIMARY TEST METHODS. HOWEVER, NONDESTRUCTIVE TESTING BY MEANS OF ULTRASONICS OFFER THE FOLLOWING ADVANTAGES: (1) HIGH SENSITIVITY TO INTERNAL REFLECTORS, (2) CAPABILITY OF PENETRATING MANY INCHES OF STEEL, (3) INSPECTION FROM ONE SURFACE OF SPECIMEN POSSIBLE, (4) EQUIPMENT PORTABILITY, (5) RAPID AND INEXPENSIVE METHOD, (6) PRECISION IN THE DETERMINATION OF DISCONTINUITY LOCATION, ORIENTATION, AND DIMENSION, AND (7) TESTING CAN BE PERFORMED DURING CONSTRUCTION, WITH NO DANGER TO NEARBY PERSONNEL. EXAMPLES ARE PRESENTED OF THE USE OF ULTRASONIC INSPECTION AND TESTING.

  • Supplemental Notes:
    • Vol 6, No 2, PP 55-59, 12 FIG
  • Authors:
    • Wehrmeister, A E
  • Publication Date: 0

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  • Accession Number: 00215196
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 15 1994 12:00AM