supported by the National Natural Science Foundation of China(51175255);the Funding of Jiangsu Innovation Program for Graduate Education(CXZZ13_0152);the Fundamental Research Funds for the Central Universities in P.R.China
An attempt is made to measure three direction forces using octagonal ring dynamometer in the 2024 aluminum alloy friction stir joining(FSJ)process.A test is made to measure the specific area stress and stress distribu...