BS EN ISO 18592:2019

What is ISO 18592- Destructive testing of welds about? 

ISO 18592 specifies test specimens and procedures for performing constant load amplitude fatigue tests on multi-spot-welded and multi-axial specimens in the thickness range from 0,5 mm to 5 mm at room temperature and relative humidity of a maximum of 80 %. 

The applicability of ISO 18592 to larger thicknesses can be limited by mechanical properties such as yield strength and formability of the specimen material. The thickness range for advanced high strength steels (AHSS) is generally below 3,0 mm. Greater thicknesses apply for aluminium alloys, for example. 

Compliance with ISO 18592 can help welding and design engineers achieve a good weld by taking into consideration load type and failure criteria.  

Who is ISO 18592- Destructive testing of welds for? 

ISO 18592 on fatigue testing of multi-spot-welded specimens is relevant to: 

• Construction, automotive, mechanical industry 
• Sheet metal manufacturers 
• Test laboratories 
• Design engineers 
• Welding engineers 
• Fabricators 

Why should you use ISO 18592- Destructive testing of welds? 

Resistance welding does not require other materials to create bond between metals, but instead can be joined by applying pressure or passing current through the metal area to be joined.  

Fatigue tests guidelines ISO 18592 for welded components can determine the effect of various parameters such as joining methods, pitch, material thickness and material combinations, type of load (e.g. shear load, peel load), overlap, location of weld on flange, edge distance, loading condition (e.g. quasi-static, cyclic, load ratio R), and the combination of environment and corrosion on the fatigue behaviour (life) of spot welds and/or specimens subjected to various types of loads.  

ISO 18592 offers a framework within which the different specimens, described herein, can be modified such that design specifics and production constraints, e.g. flange width and overlap, weld nugget size, pitch, bending radius, and sub-standard welds, can be given due consideration. This helps towards enhancing the significance of the results very appreciably. The test results obtained by fatigue testing of multi-spot-welded specimens helps design engineers design safe welded joints. Overall, you can achieve a good weld for your specific engineering needs.  

What’s changed since the last update? 

BS EN ISO 18592:2019 supersedes BS EN ISO 18592:2009, which is withdrawn. BS EN ISO 18592:2019 includes the following technical changes with respect to BS EN ISO 18592:2009: 

• Clause 3 has been updated and Figures and tables have been updated