ASTM D1871 Test Fixture

Description

ASTM D1871 – Standard Test Method for Adhesion Between Tire Bead Wire and Rubber

ASTM D1871 covers procedures for testing the strength of adhesion of single-filament wire to vulcanized rubber compounds.

The method applies to, but is not limited to, wire made from brass, bronze, or zinc coated steel wire.

The adhesion strength is expressed as the magnitude of the pull-out force for the single filament of wire.

This test method is applicable to single-filament wires used in reinforced rubber products as single filaments and is normally used to evaluate the adhesion

of samples of wire to a standard rubber applied under specified conditions.

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ASTM D1871 / Apparatus and Materials

ASTM D1871  / Tensile Testing Machine, CRE (Constant-Rate-of- Extension) type, of such capacity of the load cell in use that the maximum force required

to pull out the wires shall not exceed 85 % nor be less than 15 % of the rated capacity.

The rate of travel of the power actuated grip shall be 50 ±5 mm/min, or up to 150± 15 mm/min by agreement between the purchaser and the seller.

The specifications and methods of calibration and verification shall conform to Specification D76.

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ASTM D1871  /Top Grip, shall be a special holder made for the vulcanized block sample.

The bottom grip may be any type clamp of sufficient capacity to handle the specimen and designed to prevent its slippage in the grip or to prevent premature

filament breakage

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Referenced Documents

ASTM D76 Specification for Tensile Testing Machines for Textiles

ASTM D123 Terminology Relating to Textiles

ASTM D1566 Terminology Relating to Rubber

ASTM D2906 Practice for Statements on Precision and Bias for Textiles

ASTM D3182 Practice for Rubber—Materials, Equipment, and Procedures for Mixing Standard Compounds and Preparing Standard Vulcanized Sheets

ASTM D4392 Terminology for Statistically Related Terms

ASTM D6477 Terminology Relating to Tire Cord, Bead Wire, Hose Reinforcing Wire, and Fabrics

ASTM E456 Terminology Relating to Quality and Statistics

*** Before conducting ASTM D1871 , it is important to read the entire specification. Standards can be obtained from appropriate standard authorities.

 

***PARSROS  offers several types of grips and fixtures which will enable you to perform a variety of tests

  that are accurate and repeatable.