stiffness (or rigidity) is a property of a polymers that is described by flexural modulus or bending modulus of elasticity. it is therefore one of the most important properties of solid materials. flexural modulus denotes the ability of a material to bend.
the base flexural modulus of a base material is determined by the fundamental properties of the material. for example, in plastics, the type of polymer, molecular weight, thickness and shape all play a role in the flexibility. one way to modulate the flexibility is to add a fine mineral filler, such as talc powder to the plastic.
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. the transverse bending test is most frequently employed, in which a specimen having either a circular or rectangular cross-section is bent until fracture or yielding using a three point
in mechanics, the flexural modulus or bending modulus is an intensive property that is computed as the ratio of stress to strain in flexural deformation, or the tendency for a material to resist bending.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.
flexural modulus has been determined for a wide variety of structural materials, including metals, wood, glass, concrete, and plastics. it is usually measured at ambient temperature conditions. the properties of some materials, like many plastics, will change with temperature.
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flexural strength, psi 73°f 14,450 15,000 astm d 790 flexural modulus, psi 73°f 360,000 360,000 astm d 790 compressive strength, psi 73°f 9,600 10,000 astm d 695 izod impact, notched, ft-lb/in 73°f 0.75 2.9 astm d 256 note: the physical properties shown above are considered general for pvc and cpvc.
flexural strength testing of plastics. the flexural strength of a material is defined as its ability to resist deformation under load. for materials that deform significantly but do not break, the load at yield, typically measured at 5% deformation/strain of the outer surface, is reported as the flexural strength or flexural yield strength.
beam calculator lite for android in many engineering applications to resist bending or flexural loading. we change the material and thickness to meet the deflection or strength criterion.