ISO 20975-2:2018 PDF

Scope: This document specifies a flexural test method for determining the through-thickness (out-of-plane) tensile properties of laminated carbon fibre-reinforced plastic (CFRP) composites, including strength, fracture strain, and modulus. This document is applicable to unidirectional CFRP (UD-CFRP) laminates. In addition, the calculation of effective volume is also described due to size effects of the throughthickness tensile strength.

ISO 20975-2:2018 Referenced Document

ISO 1268-1:2001 Fibre-reinforced plastics - Methods of producing test plates - Part 1: General conditions
ISO 1268-4:2005 Fibre-reinforced plastics - Methods of producing test plates - Part 4: Moulding of prepregs
ISO 20501:2003 Fine ceramics (advanced ceramics, advanced technical ceramics) - Weibull statistics for strength data
ISO 2818:1994 Plastics - Preparation of test specimens by machining
ISO 291:2008 Plastics - Standard atmospheres for conditioning and testing
ISO 5893:2002 Rubber and plastics test equipment - Tensile, flexural and compression types (constant rate of traverse) - Specification

2018 ISO 20975-2:2018 Fibre-reinforced plastic compositess - Determination of laminate through-thickness properties - Part 2: Determination of the elastic modulus, the strength and the Weibull size effects by flexural test of unidirectional laminate, for carbon-fibre based sys