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A simplified extreme method for determining double‐K fracture parameters of concrete using experimental peak load
Author(s) -
Qing L.B.,
Nie Y.T.,
Wang J,
Hu Y
Publication year - 2017
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/ffe.12493
Subject(s) - structural engineering , materials science , point (geometry) , fracture (geology) , extreme point , bending , mathematics , composite material , geometry , engineering , combinatorics
A simplified approach to obtain the double‐ K fracture parameters of concrete for three‐point bending beams was proposed based on the extreme method. With the proposed method, the double‐ K parameters can be easily obtained by the experimental peak load. This method requires fewer parameters or tests than the double‐ K method and the peak load method. It also avoids complicated numerical integral compared with the traditional extreme method. The double‐ K parameters obtained by the proposed method are slightly smaller than those by the double‐ K method, and they do not seem to be influenced by the initial crack length to depth ratio.