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Site: Home > Related Articles > Abrasion & Wear Testing Services

Abrasion & Wear Testing Services

Author: Released in:2016-08-24 Click:912

Tear and Abrasion Strength by the numbers

.............Pounds of force until fabric tears ........Abrasion cycles on pavement until fabric fails
CottonJeans ...................4.5 pounds to tear .............50 cycles to failure
70 Denier Standard Nylon ..4.5 pounds to tear .............165 cycles to failure
500 Denier Polyester ........8 pounds to tear ................180 cycles to failure
200 Denier Standard Nylon 7.5 pounds to tear ..............275 cycles to failure
500 Denier Cordura ..........22 pounds to tear ...............710 cycles to failure
620 Denier Cordura ..........35 pounds to tear ...............1200 cycles to failure
NEW Competition Grade Leather 80-110 pounds to tear ..1200-1700 cycles to failure
1000 Denier Cordura ........110 pounds to tear ..............1780 cycles to failure
Air Mesh Kevlar ..............1260 pounds to tear .............970 cycles to failure
Stretch Kevlar Blend ........420lbs pounds to tear ..........1800 cycles to failure

 

When abrasion is the predominant factor causing deterioration of your materials, testing will give you data to compare materials or coatings and can help you predict the life time of a material or coating.

Abrasion testing is used to test the abrasive resistance of solid materials. Materials such as metals, composites, ceramics, and thick (weld overlays and thermal spray) coatings can be tested with this method. The intent of this test method is to produce data that will reproducibly rank materials in their resistance to scratching abrasion under a specified set of conditions.

The test should not be used to predict the exact resistance of a given material in a specific environment. Its value lies in predicting the ranking of materials in a similar relative order of merit as would occur in an abrasive environment. Volume loss data obtained from test materials whose lives are unknown in a specific abrasive environment may, however, be compared with test data obtained from a material whose life is known in the same environment. The comparison will provide a general indication of the worth of the unknown materials if abrasion is the predominant factor causing deterioration of the materials.

QINSUN is one of few commercial laboratories that offer rubber wheel and pin abrasion testing capability. QINSUN can conduct abrasion tests according to ASTM G65, "Standard Test Method for Measuring Abrasion Using the Dry Sand/Rubber Wheel Apparatus," and ASTM G132, "Standard Test Method for Pin Abrasion Testing." Custom wear tests and abrasion tests can be devised that simulate actual service conditions, with combinations of environment, velocities, and abrasives.

ASTM G65 is performed by loading a rectangular test sample against a rotating rubber wheel and depositing sand of controlled grit size, composition, and flow rate between them. The wheel is rotated in the direction of the flow of sand. The mass of the test sample is recorded before and after conducting a test and the difference between the two values is the resultant mass loss due to dry sand abrasion. To develop a comparison table for ranking different materials with respect to each other, it is necessary to convert this mass loss to volume loss to account for the differences in material densities.

ASTM G132 is performed using two pin specimens; the subject material and a reference material. A pin is positioned perpendicular to an abrasive surface, which is mounted on and supported by a flat surface. The test machine permits relative motion between the abrasive surface and the pin surface. The wear track of the pin is continuous and non-overlapping. The pin rotates about its axis during testing. The amount of wear is determined by weight loss. The reference specimen wear is included in the calculation in order to correct for abrasively variations.

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