① tensile test method. Common specification of test methods are GB/T228-87, JISZ2201, JISZ2241, ASTMA370, ГОСТ 1497, BS18 and DIN50145;
② tortuous experimental approaches. Commonly used standardized test methods are GB/T232-88, JISZ2204, JISZ2248, ASTME290, ГОСТ 14019, DIN50111, and so on.
(2) function: check function of the identification project for the tensile test and experimental twists and turns. Target contains the yield point, tensile strength, elongation and winding passes, etc.