Fractography and estimates of fracture origin size from fracture mechanics

Conference · Tue Dec 31 00:00:00 EST 1996

OSTI ID:567510

Quinn, G D ^[1]; Swab, J J ^[2]

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1. National Institute of Standards and Technology, Gaithersburg, MD (United States)
2. Army Research Lab. - Materials Directorate, Aberdeen Proving Grounds, MD (United States)

Fracture mechanics should be used routinely in fractographic analyses in order to verify that the correct feature has been identified as the fracture origin. This was highlighted in a recent Versailles Advanced Materials and Standards (VAMAS) fractographic analysis round robin. The practice of using fracture mechanics as an aid to fractographic interpretation is codified in a new ASTM Standard Practice. Conversely, very good estimates for fracture toughness often come from fractographic analysis of strength tested specimens. In many instances however, the calculated flaw size is different from the empirically-measured flaw size. This paper reviews the factors which may cause the discrepancies.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 567510
• Report Number(s): CONF-960106-; TRN: 98:000275-0005
• Resource Relation: Conference: 20. annual conference on composites, advanced ceramics, materials and structures-B, Cocoa Beach, FL (United States), 7-11 Jan 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the 20th annual conference on composites, advanced ceramics, materials, and structures - A; Greenhut, V.; PB: 498 p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERAMICS
FRACTOGRAPHY
FRACTURE MECHANICS
STANDARDS