ASTM E604 – 83 Tear Testing of Metallic Materials

ASTM E604 – 83 Tear Testing of Metallic Materials

The Dynamic tear (DT) test is covered by ASTM E604 – 83, which uses specimens with thicknesses ranging from 316 in. to 588 in. (5 mm to 16 mm) inclusive. The values in inch-pound units should be considered standard.

    Scope:

    In research and development, ASTM E604 – 83 is helpful to assess the effects of metallurgical variables like composition, processing, or heat treatment. It is also helpful in fabricating procedures like forming and welding on the dynamic rip fracture resistance of new or existing materials. To determine the suitability of a material for a given use in-service evaluation. When minimum Dynamic test energy is required, it is used for information, acceptance specifications, and production quality control.

    Procedure

    ASTM E604 – 83 Tear Testing of Metallic Materials test comprises impact loading a single-edge notched beam in three-point bending and recording the total energy loss during separation. The dynamic test specimen is fractured by the Pendulum or drop-weight machines.

    Specimen size

    The specimen blank must be B by 1.60 by 7.125 in. (B by 40.6 by 181.0 mm), where B might be between 316 and 508. (5 to 16 mm).

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    Data

    l = 0.815ρ 2, to determine l in feet

    l = 0.2485ρ2, to determine l in meters

    where l is the distance from the axis to the center of percussion, ft (or m), and ρ is a time of a complete cycle (to and fro) of the pendulum, s.

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