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Nanomanufacturing - Key control characteristics - Part 6-26: Graphene-related products - Fracture strain and stress, Young’s modulus, residual strain and residual stress: bulge test

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1 Scope

This part of IEC TS 62607 establishes a standardized method to determine the mechanical key control characteristics (KCCs)

  • Young's modulus (or elastic modulus),

  • residual strain,

  • residual stress, and

  • fracture stress

of 2D materials and nanoscale films using the

  • bulge test.

The bulge test is a reliable method where a pressure differential is applied to a freestanding film, and the resulting deformation is measured to derive the mechanical properties.

  • This method is applicable to a wide range of freestanding 2D materials, such as graphene, and nanometre-thick films with thicknesses typically ranging from 1 nm to several hundred nanometres.

  • This document ensures the characterization of mechanical properties essential for assessing the structural integrity and performance of materials in applications such as composite additives, flexible electronics, and energy harvesting devices.