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It is determined from the slope of a stress-strain curve produced by a flexural test (such as the ASTM D790), and uses units of force per area. [2] The flexural modulus defined using the 2-point (cantilever) and 3-point bend tests assumes a linear stress strain response. [3] Flexural modulus measurement
ASTM D790: Standard test methods for flexural properties of unreinforced and reinforced plastics and electrical insulating materials. ASTM E1290: Standard Test Method for Crack-Tip Opening Displacement (CTOD) Fracture Toughness Measurement. ASTM D7264: Standard Test Method for Flexural Properties of Polymer Matrix Composite Materials.
ASTM E8/E8M-13: "Standard Test Methods for Tension Testing of Metallic Materials" (2013) ISO 6892-1: "Metallic materials. Tensile testing. Method of test at ambient temperature" (2009) ISO 6892-2: "Metallic materials. Tensile testing. Method of test at elevated temperature" (2011) JIS Z2241 Method of tensile test for metallic materials
The flexural strength is stress at failure in bending. It is equal to or slightly larger than the failure stress in tension. Flexural strength, also known as modulus of rupture, or bend strength, or transverse rupture strength is a material property, defined as the stress in a material just before it yields in a flexure test. [1]
ASTM C1161: Standard Test Method for Flexural Strength of Advanced Ceramics at Ambient Temperature; ASTM D6272: Standard Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials by Four-Point Bending; ASTM C393: Standard Test Method for Core Shear Properties of Sandwich Constructions by ...
Standard methods for the identification of the two Young's moduli E 1 and E 2 require two tensile, bending of IET tests, one on a beam cut along the 1-direction and one on a beam cut along the 2-direction. Major and minor Poisson's ratios can be identified if also the transverse strains are measured during the tensile tests.