RAPID INEXPENSIVE TESTS FOR DETERMINING FRACTURE TOUGHNESS

All available, demonstrated correlations between the results of existing fracture test methods and valid plane-strain fracture toughness (KIc) measurements (made according to ASTM Standard Method of Test E399) have been assessed. The fracture toughness test methods considered include: standard and fatigue-precracked Charpy-size specimen tests; dynamic tear tests; unnotched, notched, and plane-strain tension tests; and bulge tests. The materials for which the correlations have been examined include aluminum and titanium alloys and steels of interest in aerospace, naval construction, army materiel, and nuclear pressure vessel applications. In evaluating the various rapid, inexpensive test methods that have been proposed to measure fracture toughness, the Committee considered both the degree of correlation that could be demonstrated for a given test method and the complexity of the measurements to be made and their analysis, the probable capability of quality-control personnel to make and analyze such measurements, and the relative cost of preparing specimens and carrying out the tests. This report is based on data available through October 1,1975.

• Corporate Authors:

  National Materials Advisory Board

  2101 Constitution Avenue, NW
  Washington, DC  United States  20418
• Publication Date: 1976

Media Info

• Pagination: 242 p.

Subject/Index Terms

• TRT Terms: Drop tests; Ductility tests; Dynamic tests; Fracture properties; Fracture tests; Nondestructive tests; Tear strength; Tension tests
• Old TRIS Terms: Charpy tests; Ductility testing; Dynamic tear test; Plane strain fracture toughness test; Surface flaw specimen test; Tensile test
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00147745
• Record Type: Publication
• Report/Paper Numbers: NMAB-328 Final Rpt.
• Contract Numbers: MDA-903-74-C-0167
• Files: TRIS
• Created Date: Feb 16 1977 12:00AM