Paper and board. Testing of cores - Determination of bending strength by the three-point method Ingestion-build-223009 Electronic manufacturer

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4 Fracture toughness with a modified bending test

Paper and board. Testing of cores - Determination of bending strength by the three-point method Ingestion-build-223009 Electronic manufacturer1 Scope This part of ISO 11093 specifies a three point method for the determination of the bending strength of cylindrical board cores which meet the following criteria: internal diameter: 50 mm to 300 mm; minimum wall thickness: 5 mm; minimum test length of core (span): 1 100 mm.