Blunt V-Notch Brittle Fracture: An Improved Finite Fracture Mechanics Approach

The coupled Finite Fracture Mechanics (FFM) criterion is applied to investigate brittle fracture in rounded V-notched samples under mode I loading. The approach is based on the contemporaneous fulfilment of a stress requirement and the energy balance, the latter being implemented on the basis of a r...

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Published inAdvanced Materials Research Vol. 1105; pp. 237 - 244
Main Authors Sapora, Alberto, Cornetti, Pietro, Firrao, Donato, Carpinteri, Alberto
Format Journal Article
LanguageEnglish
Published Zurich Trans Tech Publications Ltd 20.05.2015
Subjects
Brittle fracture
Criteria
Exact solutions
Fracture mechanics
Fracture toughness
High strength steels
Mathematical analysis
Nickel chromium molybdenum steels
Roots
Steels
Brittle Fracture
As Quenched Steel
Blunt V-Notches
AISI 4340 Steel
Finite Fracture Mechanics
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Summary:The coupled Finite Fracture Mechanics (FFM) criterion is applied to investigate brittle fracture in rounded V-notched samples under mode I loading. The approach is based on the contemporaneous fulfilment of a stress requirement and the energy balance, the latter being implemented on the basis of a recently proposed analytical expression for the stress intensity factor. Results are presented in terms of the critical crack advance and the apparent generalized fracture toughness, i.e. the unknowns related to the system of two equations describing the FFM criterion. A validation of the theory is performed by employing varying root radius notched, as-quenched, AISI 4340 steel specimens fracture results.
Bibliography:Selected, peer reviewed papers from the 2015 5th International Conference on Advanced Materials Research (ICAMR 2015), January 7-8, 2015, Doha, Qatar
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ISBN:3038354724
9783038354727
ISSN:1022-6680
1662-8985
1662-8985
DOI:10.4028/www.scientific.net/AMR.1105.237