4 Point Flexural Stress-Strain, Strength and Modulus


Test ID

M-225

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

Test specimens can be molded or cut from sheets or plates.

Standards

  • ASTM D790

Data

Flexural Modulus, Flexural Strain at Break, Flexural Strength at Break, Flexural Stress-Strain Curves, Offset Yield Strain in Flex, Offset Yield Stress in Flex. This data appears in Matereality as Flexural Properties.

Replicates

Number of times this test is repeated: 5

Samples

7 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.

livechat button