ORIGIN OF BURST-TYPE ACOUSTIC EMISSION IN UNFLAWED 7075-T6 ALUMINUM

Tensile tests were used to study the acoustic emission from several 7075-T6 aluminum plates. Specimens from one plate produced a large burst-type emission in addition to the continuous emission. Metallographic and fracture surface studies indicated that the burst-type emission resulted from the brittle fracture of large primary inclusions in the microstructure.

• Supplemental Notes:
  • Research sponsored by the U.S. Energy Research and Development Administration.
• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Bianchetti, R
  • Hamstad, M A
  • Mukherjee, A K
• Publication Date: 1976-9

Media Info

• Features: Figures; References;
• Pagination: p. 313-318
• Serial:
  • ASTM Journal of Testing and Evaluation
  • Volume: 4
  • Issue Number: 5
  • Publisher: Federal Highway Administration

Subject/Index Terms

• TRT Terms: Acoustic properties; Aluminum; Fracture mechanics; Microstructure; Pollutants; Tension tests
• Old TRIS Terms: Inclusions; Tensile test
• Subject Areas: Geotechnology; Highways; Materials; Research;

Filing Info

• Accession Number: 00142195
• Record Type: Publication
• Report/Paper Numbers: Conf Paper
• Files: TRIS
• Created Date: Dec 15 1976 12:00AM