Self-Tightening Grips for Deformable and Elastic Materials

Description

Self-tightening grips increase clamping force as tensile load is applied. They are used for specimens that stretch or reduce in thickness during testing, such as elastomers, thin plastics, foams, textiles, and biomedical materials. The gripping mechanism adapts to changes in specimen dimensions without requiring manual adjustment during the test.

Common configurations include scissor-type grips, eccentric cam grips, and lever-actuated jaw systems. As the load rises, the jaw movement provides additional holding force, which helps maintain contact with the specimen and limits surface slipping at higher elongation levels.

These grips are used in quality control labs, textile and rubber production, and research settings, performing standardized tensile tests on soft or flexible materials. They support consistent clamping conditions throughout the loading cycle and are practical for materials with low friction or high elongation behavior.

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