ensure that realistic dimensional tolerances are specified and can be achieved.ensure that there is adequate access for both welding and inspection. specify the smallest weld acceptable for both service and fabrication.design the component to be welded by the most cost effective process.select the most cost effective design of welded joint.It is therefore necessary for the designer to: In addition to selecting the material and specifying weld sizes, the designer must bear in mind that the decisions that he/she makes will directly affect the cost, safety and serviceability of the structure or component. Weldability and mechanical properties such as tensile strength, toughness and fatigue resistance, all of which the designer must be familiar with, have been dealt with in a number of other Job Knowledge articles and will not be covered in this series on design. This next series of Connect articles will look at welding design.īest practice in design is not simply a matter of deciding on the appropriate weld size or component thickness capable of carrying the service loads there are many aspects of designing a welded component that need to be considered in addition to calculating permissible stresses. National Structural Integrity Research Centre.Structural Integrity Research Foundation.
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