JIS Z 3138:1989 (R2015)

This Japanese Industrial Standard specifies the methods of the tensile shear fatigue test and the cruciform tension fatigue test for the metal sheets 0.5 mm or over up to and including 6.0 mm in thickness, to be conducted in the atmosphere at room temperature, with the ratio of the minimum load to the maximum load 0.2 or under, by the use of standard fatigue test pieces, hereinafter referred to as the 'test pieces', which form single spot welded lap jpints.