This corresponds to the point of highest load in the load displacem curve well before. It is sometimes stated that the initiation of necking during tensile testing arises from small variations in sectional area along the gauge length of the sample.
In A Tensile Test Why Does Necking Occur At The Center Quora
Formation of necks is mainly due to the formation of micro-voids that form during the plastic flow of metalsalloys under tension.

Why necking occurs in tensile test. So when a micro-void is formed atomic layers. Necking occurs in metals tested in tension when the rate of work hardening is lower than the flow stress. FEM Simulation of Tensile Tests.

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In A Tensile Test Why Does Necking Occur At The Center Quora
