ULTRASONIC DETECTION OF INCLUSIONS IN STEEL

METHODS OF DETECTION OF NONMETALLIC INCLUSIONS IN STEEL ARE DISCUSSED, WITH EMPHASIS ON: (1) SHALLOW STRESS WAVE FOR BEARING COMPONENT INSPECTION; RESEARCH APPLICATIONS INCLUDE DETECTION OF POTENTIAL FATIGUE NUCLI, STUDYING INCIPIENT SUBSURFACE FAILURE CRACK GROWTH, AND PREDICTION OF BEARING GROUP LIFE PERFORMANCE. (2) DEVELOPMENT OF ASTM METHOD FOR "DETECTION OF INCLUSSIONS IN BEARING QUALITY STEEL BY THE ULTRASONIC METHOD" (MATERIAL RESEARCH AND STANDARDS, SEPT. 1969); INCLUDED ARE PERTINENT ASTM ULTRASONIC TASK FORCE CONTRIBUTIONS WHICH WILL IMPORTANTLY AFFECT RELIABILITY OF NEARLY ALL OTHER EXISTING ULTRASONIC INSPECTION SYSTEMS; FATIGUE CORRELATION STUDIES AND STEEL HEAT INCLUSION DISTRIBUTION PATTERNS ARE ALSO DISCUSSED. (3) BIFOCAL LENS, A SPECIAL FOCUSED TRANSDUCER DESIGN PERMITS OPTIMUM CONCENTRATION OF ENERGY FOR DETECTION OF MINUTE DISCONTINUITIES IN CYLINDRICALLY SHAPED PARTS. EMITTED ULTRASONIC BEAM EXHIBITS A LONGER FOCAL ZONE AND A DECREASE IN FRESNEL DESTRUCTIVE INTERFERENCE. /AUTHOR/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00255327
• Supplemental Notes:
  • Vol 28, No 2, PP 25-31, 10 FIG, 2 TAB, 11 REF
• Authors:
  • Bayre, W W
  • Mccormack, D D
• Publication Date: 1970-2

Media Info

• Serial:
  • Materials Evaluation
  • Publisher: American Society for Nondestructive Testing
  • ISSN: 0025-5327

Subject/Index Terms

• TRT Terms: Alloys; Antifriction bearings; Detection and identification; Detectors; Failure; Fatigue (Physiological condition); Nondestructive tests; Nonmetals; Standards; Steel; Stresses; Test procedures; Transducers; Ultrasonic tests
• Old TRIS Terms: Bearing alloys; Failure condition; Focusing; Inclusions
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00216947
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 13 1970 12:00AM