Before revision: upright=2.0|Flexural modulus measurement For a 3-point test of a rectangular beam behaving as an isotropic linear material, where w and h are the width and height of the beam, I is the second moment of area of the beam's cross-section, L is the distance between the two outer supports, and d is the deflection due to the load F applied at the middle of the beam, the flexural modulus: From elastic beam theory and for rectangular beam thus (Elastic modulus) For very small strains in isotropic materials like glass, metal or polymer , flexural or bending modulus of elasticity is equivalent to the tensile modulus (Young's modulus) or compressive modulus of elasticity.
After revision: upright=2.0|Flexural modulus measurement For a 3-point test of a rectangular beam behaving as an isotropic linear material–– where w and h are the width and height of the beam, I is the second moment of area of the beam's cross-section, L is the distance between the two outer supports, and d is the deflection due to the load F applied at the middle of the beam, the flexural modulus: From elastic beam theory and for rectangular beam thus (Elastic modulus) For very small strains in isotropic materials like glass, metal or polymer , flexural or bending modulus of elasticity is equivalent to the tensile modulus (Young's modulus) or compressive modulus of elasticity.