Tag Archives: fatigue

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Estimating the Fatigue Life of Steel Welded Structures and Components

Using S-N curves and formulas from Clause 2 of AWS D1.1

Heat affected zone crack induced by hydrogen. The crack originates at point of high stress as hydrogen diffuses out of the weld and heat affected zone.

The majority of industrial equipment and welded structural components are subjected to repeated fluctuating loads. These loads are typically of magnitudes that are within the elastic region of the material and well below its yield strength. This means that any deformation of the structure caused by the applied stress will then return to its normal […]

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6 Reasons Why Metal Fabricators Must Understand Metallurgy

Metal fabricators, or at least those in charge of welding operations, must have a sound understanding of metallurgy.  Metallurgy is the study of metals, their properties and their behaviors, especially when undergoing the welding process.  Below are 6 areas of fabrication for which an understanding of the metallurgical properties of metals is vital. Material Selection […]