Fibre-reinforced composites rely on a matrix to evenly distribute loads across all fibres, with high interfacial shear strength being essential for effective load transfer. Traditionally, macromechanical tests were used to measure this strength; however, these tests are influenced by factors such as fibre content, diameter, orientation, and operator variability while producing test specimens.

The recent release of ISO 19375 “Fibre-reinforced composites — Measurement of interfacial shear strength by means of a micromechanical single-fibre pullout test” overcomes these limitations by enabling precise measurement of pure fibre-to-matrix adhesion.

FIMATEST, comprising the FIMABOND embedding station and the FAVIMAT + single fibre tensile tester, is the first commercial system worldwide to measure fibre-to-matrix adhesion per ISO 19375 standard. This robust testing solution is ideal for manufacturers of reinforcement fibres, sizings, and matrices, as well as for research institutions.

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