Shear-Tensile Microscopic DIC Test of Welded Titanium Specimen

In microscopic shear-tensile mechanical testing of titanium welded specimens, the weld zone and base metal differ significantly in microstructure, mechanical properties, and deformation mechanisms, with strain often highly concentrated near the weld nugget, heat-affected zone, or interface. Conventional extensometers and macroscopic methods are limited by gauge length and struggle to resolve true deformation behavior in tiny zones. For this need, Haytham Technology'smicroscopic DIC digital image correlation measurement solution provides a high-spatial-resolution, non-contact measurement means for shear-tensile testing of titanium welded specimens.

Using microscopic imaging and high-precision correlation algorithms, the system continuously observes local regions of the welded joint, obtaining microscale displacement and strain distribution during shear-tensile loading. The method clearly distinguishes deformation differences among the weld zone, heat-affected zone, and base metal, accurately capturing key mechanical behaviors such as strain concentration, slip band initiation, and crack initiation, providing direct evidence for welded joint performance evaluation.

For the small size and pronounced deformation localization of titanium alloy welded specimens, the system is optimized for small-field-of-view stability, subpixel displacement computation, and noise suppression, maintaining continuous and reliable results under complex loading paths. The measurement data support shear strength evaluation, local strain evolution analysis, and comparative studies of welding process effects on mechanical performance.

In aerospace, high-end equipment, and biomedical titanium alloy structure research,Haytham's microscopic DIC is widely used in shear-tensile testing of welded joints, providing highly credible data support for material and joining process optimization.