Full-Field Visualization: DIC Technology for Automotive Material Property Evolution Analysis

In modern automotive material development and testing, DIC (digital image correlation) has become an ideal strain measurement method thanks to its non-contact, high-resolution, full-field advantages. By analyzing speckle image sequences, DIC can acquire the 3D strain field distribution on the material surface in real time during loading, providing an intuitive basis for material behavior modeling and design verification.

Especially in tension, cupping and forming limit tests of thin-walled structures such as high-strength steel sheets and composites, the DIC system can precisely capture the maximum deformation area and identify strain concentration points, effectively evaluating local instability of materials during forming. Its image-based measurement breaks the measuring point limitation of traditional strain gauges, significantly improving data richness and spatial continuity.

Haytham binocular 3D visual strain gaugeA stereo parallax model is built with two cameras, suitable for strain testing with large fields of view and complex components, and widely used inBody-in-white structural stiffness test exhaust system stiffness evaluation, dashboard vibration analysis and other tasks. DIC is accelerating the automotive industry's transformation toward an efficient, data-driven testing and verification system.