Alternative procedures for J-R curve determination

Technical Report · Fri Jul 01 00:00:00 EDT 1983

OSTI ID:5788088

Hiser, A L; Loss, F J

This investigation evaluates alternative displacement techniques with the single-specimen compliance (SSC) procedure which do not require the commonly used load-line displacement measurements in a compact toughness (CT) specimen to determine the J-R curve. The two techniques studied are a double-clip-gage technique involving both crack-mouth displacement and load-line displacement at the edges of the specimen and a technique which requires only crack-mouth displacement. R-curves developed using these techniques are compared to R-curves developed with the normal load-line based deflections. In addition, results of a round-robin program using the SSC procedure are discussed in terms of validating the double-clip-gage technique. R-curves developed from crack-mouth displacements on the J-integral specimen from ASTM E 813 suggest that the standard ASTM E 399 specimen design can be used for both linear-elastic (e.g., K/sub Ic/) and elastic-plastic (e.g., R-curve toughness assessments.

• Research Organization: Materials Engineering Associates, Inc., Lanham, MD (USA)
• OSTI ID: 5788088
• Report Number(s): NUREG/CR-3402; MEA-2022; ON: DE83902541
• Country of Publication: United States
• Language: English

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