4 Point Flexural Stress-Strain, Strength and Modulus for Composite Materials


Test ID

M-225C

Description

A universal testing machine (UTM) is used to determine and report stress/strain data. The specimen is placed on the span; the span width depends on the specimen thickness. The UTM crosshead with two-point nose is lowered until just above specimen. The test is performed at a constant velocity, using a calculated value for the strain rate. Load and corresponding specimen deflection are recorded. Five replicates are performed.

Options

Standards

  • ASTM D6272
  • ASTM D7264/D7264M

Data

Flexural Modulus - Secant, Flexural Modulus - Youngs, Flexural Strain at Break, Flexural Strength at Break, Flexural Stress-Strain Curves, Load v. Displacement. This data appears in Matereality as Flexural Properties.

Replicates

Number of times this test is repeated: 5

Samples

10 flex bars [details]

Application

This test is used in cases where the single contact nose of a three-point bending measurement will create a region of localized stress concentration. The dual nose will provide a distribution of applied stress.

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