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The three-point bending flexural test provides values for the modulus of elasticity in bending, flexural stress, flexural strain and the flexural stress–strain response of the material. This test is performed on a universal testing machine (tensile testing machine or tensile tester) with a three-point or four-point bend fixture.
[1]: 58 For example, low-carbon steel generally exhibits a very linear stress–strain relationship up to a well-defined yield point. The linear portion of the curve is the elastic region, and the slope of this region is the modulus of elasticity or Young's modulus. Plastic flow initiates at the upper yield point and continues at the lower ...
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]
Specific modulus is a materials property consisting of the elastic modulus per mass density of a material. It is also known as the stiffness to weight ratio or specific stiffness . High specific modulus materials find wide application in aerospace applications where minimum structural weight is required.
The Nobel announcement illustrated this by saying that a 1 square meter graphene hammock would support a 4 kg cat but would weigh only as much as one of the cat's whiskers, at 0.77 mg (about 0.001% of the weight of 1 m 2 of paper). [142] Large-angle bending of graphene monolayers with minimal strain demonstrates its mechanical robustness.
21.9 52 35 35 85–97 Al 2 O 3: 6.9 23 18 12 — Fe 2 O 3: 3 11 6 1 — CaO 63 5 21 40 < 1 MgO 2.5 — — — — SO 3: 1.7 — — — — Specific surface (m 2 /kg) [d] 370 420 420 400 15,000 – 30,000 Specific gravity 3.15 2.38 2.65 2.94 2.22 General purpose Primary binder Cement replacement Cement replacement Cement replacement Property ...