“ASSESSMENT OF EFFECTIVE NUGGET SIZE, NUGGET ROTATION AND FAILURE MODE OF FRICTION STIR SPOT WELDS OF AA2219-O ALLOY”. FUTA JOURNAL OF ENGINEERING AND ENGINEERING TECHNOLOGY, vol. 12, no. 1, Apr. 2019, pp. 42-53, https://doi.org/10.51459/futajeet.2018.12.1.68.