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Three-Point Bending Test of Prefabricated-Notch Metal Specimen

Three-point bending testVideo extensometer

In three-point bending tests of pre-notched metal materials, the crack initiation zone is small and strain concentration is pronounced, making it hard for conventional methods to capture crack-tip evolution. The Haytham video extensometer, based on monocular 3D DIC technology, continuously observes strain changes near the crack tip, supporting research into fracture initiation mechanisms.

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