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Corrected stress intensity factor solution for a British standard single edge notched tension (SENT) specimen
Author(s) -
Zhu X.K.
Publication year - 2016
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.12351
Subject(s) - tension (geology) , single specimen , stress intensity factor , materials science , enhanced data rates for gsm evolution , structural engineering , range (aeronautics) , composite material , stress (linguistics) , fracture mechanics , geology , engineering , ultimate tensile strength , paleontology , telecommunications , linguistics , philosophy
This paper revisits a complicated analytical solution of the stress intensity factor K adopted in a newly published British standard BS 8571:2014 for clamped single edge notched tension (SENT) specimens. Comparison with existing numerical results of K shows that the analytical K solution in BS 8571 is correct only for the crack length to specimen width ratio a / W ≤ 0.6, but incorrect for a / W > 0.6. A reinvestigation is thus performed using the crack compliance method, and a corrected K solution is obtained for the BS 8571 clamped SENT specimens over the full range of a / W . On this basis, a simple closed‐form solution of K is obtained using the best curve fitting with an accuracy within 1% for crack sizes up to a / W = 0.98. Results show that the proposed closed‐form solution of K agrees well with the numerical results of K for the clamped SENT specimens.