Abrasion testing provides you with data to compare materials when rubbing deteriorates your packaging material. It also helps manufacturers to forecast the lifetime of a packaging material. It is used to assess the abrasive resistance of packaging materials. You can measure the caustic strength of materials such as ceramics, metals, and composite with abrasion testing. Abrasion provides manufacturers with data used to rank packaging materials according to their ability to resist scratching abrasion under given conditions.
Manufacturers should not use standard abrasion testing techniques to measure the actual resistance of packaging material. The value of standard abrasion test lies in the ranking materials. Manufacturers may use a customized wear testing technique to mimic actual operating conditions such as the direction of wear, fluids, and temperature. Such custom approaches provide data that relates to the working environment. Abrasion testing techniques include pin abrasion, Taber abrasion, RCA abrasion, and rubber wheel abrasion.
Taber Abrasion Testing
It involves mounting of a flat specimen to a turntable platform that has two abrasive wheels. It allows manufacturers to measure the ability of a product to resist abrasive scratch under given conditions. The two wheels rotate over the specimen to determine its resistance to scratch. One-wheel scratches the sample inwards while the other towards the periphery. Afterwards, the mass of the specimen is measured to allow for property comparison. Depending on the nature of your project, you can use more than two abrasive wheels.
Rubber Wheel Abrasion Test
It involves loading a rectangular plastic specimen against a rotating rubber wheel. Sand of controlled flow rate, composition, and grit size are used to measure the ability of packaging material to resist abrasion. It involves measuring the mass of the rectangular test sample before and after the experiment. Rubber wheel abrasion test helps develop a comparison table for ranking packaging materials. It allows conversion of mass loss to volume loss. That enables the user to determine the difference in material densities.
Pin Abrasion Test
Abrasion test is performed using two specimens. It involves comparison of the subject material against a reference material. In pin abrasion test, the abrasive surface is mounted on a flat surface. Pin rub resistance tester has a pin that is positioned perpendicular to the abrasive surface. The pin abrasion tester permits relative motion between the surface of the pin and the abrasive surface. The pin’s wear track is continuous and doesn’t overlap each other. During testing, the pin rotates about its axis. Weight loss is the main determinant of the amount of wear. Pin abrasion test allows inclusion of a reference specimen to allow the user to determine the correct variation.
Over the recent years, there have been significant efforts to develop standardized abrasion testers. You can contact research industry associations to confirm the availability of certain abrasion test procedures. If a method doesn’t exist, select a test model that fits your applications. The primary elements of a wear system include measurement, apparatus design, test protocol, and specimen.