A note on stress intensity factors for a crack emanating from a sharp V-notch

A concise and precise formula for mode-I stress intensity factor of a short crack emanating from the bisector of a V-notch has been derived by Philipps et al. The crack tip stress intensity factor is directly evaluated via the mode-I generalized stress intensity factor of an uncracked notch. This note further supplements an accurate formula to calculate mode-III stress intensity factor for a short crack emanating from a V-notch.

► Mode-III stress intensity factors are derived for a crack emanating from a sharp V-notch.
► A concise and precise formula.
► Used for a crack grows from an initial non-detectable flaw to a detectable one at the V-notch tip.