Shear strain is a measure of deformation representing the displacement between layers of a material in response to applied shear stress. It is a dimensionless quantity that quantifies the angular distortion of the material without any change in volume.

Shear Strain

Shear strain

measure of deformation

displacement between layers

applied shear stress

A dimensionless quantity is a pure number without any physical units, often arising from the ratio of two quantities with the same dimensions, allowing for comparison across different systems. These quantities are crucial in scientific fields as they provide scale-invariant insights, facilitating the understanding of physical phenomena and the derivation of universal laws.

dimensionless quantity

Angular distortion is a type of deformation that occurs when different parts of a welded joint expand or contract unevenly, leading to a change in the angle between the welded components. It is a critical consideration in welding processes as it can affect the structural integrity and dimensional accuracy of the final assembly.

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