NDLI: Validation of the Acceptability of 10x20 mm Specimens for Fracture Toughness Determination of High-Strength Steels

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Carey, L. Walters Lars, O. Voormeeren Janssen, Michael Wallin, Kim
Copyright Year	2013
Abstract	Standards have traditionally required that fracture toughness specimens be the full thickness of the base material. However, this requirement may be unnecessary, especially if minimum specimen size dimensions based on plastic zone are met and the subsized specimens are statistically adjusted for the size effect. The current paper presents the results for full-thickness proportional Single Edge Notched Bending (SENB) specimens according to BS7448-1 that are 25 mm by 50 mm in cross-section and then compares these results to specimens of the same material that are 10 mm by 20 mm in cross section. The result is that for a temperature near the lower portion of the transition curve (−60°C to −70°C), the subsize specimens are in very good agreement. These results hold for two different loading rates. After correction for statistical size effect, the fracture toughnesses of the subsize specimens are within 10% of the full-size specimens. This is conservative. The difference is attributed to the statistical nature of fracture in the transition region.
Sponsorship	Ocean, Offshore and Arctic Engineering Division
File Format	PDF
ISBN	9780791855355
DOI	10.1115/OMAE2013-10373
Volume Number	Volume 3: Materials Technology; Ocean Space Utilization
Conference Proceedings	ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering
Language	English
Publisher Date	2013-06-09
Publisher Place	Nantes, France
Access Restriction	Subscribed
Subject Keyword	Fracture (process) Temperature Size effect Dimensions Fracture (materials) Steel Fracture toughness
Content Type	Text
Resource Type	Article

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