Notch Sensitivity of First‐Year Sea Ice

Parsons, B.L.; Williams, F. M.; Everard, J.; Slade, T.D.

doi:10.1061/(asce)0733-9399(1993)119:7(1303)

Cited by 4 publications

(1 citation statement)

References 10 publications

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“…It can be speculated that the scatter typically observed in S 1 ice testing is due both to specimen size effects and crack tip location vs. the contiguous microstructure prior to crack initiation. When the fracture specimen is too small with respect to LEFM constraints and relative to the grain size, it is notch insensitive and a representative fracture event is not measured [2,4,31]. When there are too few grains in the notch cross-section, the full confining effect imposed by neighboring grains (polycrystallinity) is not mobilized.…”

Section: Methodsmentioning

confidence: 99%

Fracture resistance determination of freshwater ice using a chevron notched tension specimen

Stehn

DeFranco²,

Dempsey

1994

Int J Fract

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Crack growth resistance (R-curve behavior) measurements on large grained S 1 type freshwater ice were conducted in the Ice Mechanics Research Laboratory at Clarkson University. To overcome previous difficulties in obtaining stable cracking in freshwater ice, a new crack geometry was developed. The short rod Chevron Notched Tension (CNT) specimen was found to be extremely favorable in the sense of promoting stable, stick-slip, crack growth over a large portion of the uncracked ligament. A negative fracture resistance KR-curve was evaluated for this ice at -16°C.

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Section: Methodsmentioning

confidence: 99%