ISO/TR 12998 species recommendations for test specimens and procedures for performing constant load amplitude fatigue tests on single- and multi-joint sheet specimens in the thickness range from 0,5 mm to 6 mm at room temperature and a relative humidity of max. 80 %.
ISO/TR 12998 covers:
Note: ISO/TR 12998 does not apply to civil engineering applications such as metal building and steel construction which are covered by other applicable standards.
ISO/TR 12998 on mechanical joining is applicable to:
With time and due to repeated usage, joints lose their strength. To ensure they are still safe to use and to make repairs in damaged joints, a fatigue test is required.
ISO/TR 12998 helps you with the selection of materials and thickness combinations for structures and components subjected to cyclic loading. The findings of fatigue testing are useful for direct application to a design of mechanical joining when the loading conditions in service and the stiffness of the design in the joint area are identical.
ISO/TR 12998 specifies recommendations for fatigue testing of test specimens with dimensional information for riveted, clinched, and screwed mechanical joints. Specimens of the H-shaped, hat-shaped, double-disc, and KS 2 types are specified. ISO/TR 12998 is based on ISO 18592, the standard on the fatigue testing of resistance spot welds. ISO/TR 12998 guidelines improve the reliability of constant load amplitude fatigue tests on mechanical joining.
BSI recommends this version of standard for organisations operating in or with the UK. The ISO edition is available here if required.