J SUB IC DETERMINATION USING THE PROPOSED STANDARD C-SHAPED SPECIMEN

Authors
  1. Laforce, C.H.
  2. Morrison, J.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN);American Society of Mechanical Engineers, New York NY (US)
Abstract
The proposed standard C-shaped Specimen for K sub Ic determinations according to ASTME399 is readily adaptable to load line deflection measurement, and thus to J-integral assessment, using procedures currently being developed for other geometries. Tests have been conducted on quenched and tempered steels to provide comparisons of J sub Ic and K sub Ic using both C-shaped and compact tension specimens. The effect of specimen thickness on the crack growth resistance curve and J sub Ic has also been examined and analyzed in relation to the allowed thickness range for the proposed test method. The Merkle and Corten corrections for the C-shaped Specimen have been calculated and compared to those for other specimen geometries. J estimates based on total displacement measurements have been found to be acceptable even at short relative crack depths.
Report Number
PAP-78-MAT-6 — Reprint 4212, Paper presented at the ASME/CSME Joint Pressure Vessel and Piping Conference, Montreal, June 25-30, 1978
Date of publication
01 Jan 1978
Number of Pages
4
Reprinted from
J of Engineering Materials and Technology (CAN), vol 100, 1978, p 248-252
DSTKIM No
78-02851
CANDIS No
83535
Format(s):
Hardcopy;Originator's fiche received by DSIS

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