Publication Details

A.K. Hellier, P.P. Chaphalkar and B.G. Prusty, Fracture Toughness Measurement for Aluminium 6061-T6 using Notched Round Ba, 9th Australasian Congress on Applied Mechanics (ACAM9), University of New South Wales, 27-29 November 2017.


Current standard testing methods for determining plane strain fracture toughness (KIc), such as ASTM E399 and ASTM E1820, require a prior estimate of KIc, plus the specimens are large, involve a lot of machining and need fatigue pre-cracking. There is therefore a desire to develop new testing techniques which are simple, as well as cost and time effective. While the use of tensile notched round bars (NRB) test pieces is not novel, dating back to a conference paper by Brown in 1975, relatively few authors have so far attempted this.