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- W2146704 abstract "A search for a new type of notch for the standard drop-weight-tear-test (DWTT) specimen has been completed. This new notch specimen is to replace the precracked DWTT specimen which has been shown to predict full-scale behavior but has received little support from pipe manufactures. The new notch is a chevron notch causing fracture initiation to occur at a machined point located at mid-well thickness and about 0.2 inch below the specimen edge (i.e., at the same depth as the pressed-in notch of the standard DWTT). No precracking or other severe prestraining, which may create strain aging problems, is required to produce the specimen. A good correlation was obtained between the chevron-notched DWTT and the Charpy V-notch specimens for conventionally rolled steels; this correlation effectively ties the chevron notched data to past fracture research data and to published correlations that describe fracture in terms of Charpy upper-shelf energy. A procedure is included (appendix) for preparing and conducting the Chevron notched DWTT. 22 refs., 14 figs., 4 tabs." @default.
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- W2146704 date "1990-09-01" @default.
- W2146704 modified "2023-09-27" @default.
- W2146704 title "The chevron notched drop-weight-tear-test specimen" @default.
- W2146704 hasPublicationYear "1990" @default.
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