What is a continuous notch in butt welded joints?
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A continuous notch in butt welded joints refers to a geometrical discontinuity that affects the fatigue strength of the joints. It is characterized by a notch at the weld toe, which can lead to stress concentration and detrimental effects on the joint's fatigue lifetime. The shape and extension of the notch vary, requiring accurate prediction of fatigue strength for each specific case. The presence of notches in welded joints can be studied using fracture mechanics approaches, which analyze the relationship between undercut geometry and fatigue strength . In the case of T11 steel tubes welded using the Magnetically Impelled Arc Butt (MIAB) welding process, various Thermo-Mechanically Affected Zones (TMAZ) are formed, each with different tensile properties. Notched tension testing is carried out to compare the properties of these zones, with some zones displaying higher notch ductility and no loss in notch strength compared to the base metal . The stress concentration factor (SCF) at the weld in steel butt welded joints can be estimated using finite element analysis, and new parametric equations for estimating SCFs are proposed . The notch effect coefficient Kf is used to determine stress concentrations in welded joints, and curves presenting the fatigue coefficient of the structural notch effect have been plotted for different types of welds and steels .
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3 Citations | The provided paper does not mention anything about a "continuous notch" in butt welded joints. |
25 Citations | The provided paper does not mention anything about a "continuous notch" in butt welded joints. |
| The provided paper does not mention anything about a "continuous notch" in butt welded joints. | |
23 Citations | The paper does not provide information about a "continuous notch" in butt welded joints. The paper focuses on the effects of undercuts, which are geometrical discontinuities that affect the fatigue strength of welded joints. |
| The provided paper does not mention anything about a "continuous notch" in butt welded joints. |
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