Qualifying very thick steel and new steels for use in construction, shipbuilding, pipes, and heavy equipment is not easy. Charpy tests are usually used, but the resulting data is not always consistent.
Bill Mohr, EWI Principal Engineer for Structural Integrity, has conducted a study of crack specimens with splits. His work shows that Charpy and fracture toughness data can be better understood by noting whether the splits cross into the start notch or appear only on the main crack. This additional information can help product designers avoid fracture risks when using these materials.
Splitting Behavior Effects on Toughness of Steels discusses these findings. You are invited to download this paper, free of charge, by completing the form on this page.
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