Martindale Abrasion Tester For Testing Lab

Martindale Abrasion Tester - Determination of resistance of any textile material to abrasion is usually carried out by abrading the textile material under specified conditions against a standard abradant. Although plane abrasion of surface does not cover all aspects of strains that are important in determining service life, there are occasions when such a test gives useful information. One of the standard equipment used for this determination is the Martindale Abrasion Tester. This apparatus gives a controlled amount of abrasion between material surfaces at comparatively low pressures in continuously changing direction. Circular specimens of textile material are abraded under known pressures under a motion, which is the resultant of two simple harmonic motions at right angle to each other. The resistance to abrasion is estimated by visual appearance or by finding the loss in mass of the test specimens.   Technical Data   Maximum number of test specimens that can be tested at a time : Four   Speed of outer pegs : 47.5 ± 2 rpm   Ratio of speeds of outer pegs to central peg : 32 / 30   Stroke of pegs : 60.5 mm   Working area of specimen holder : 6.45 cm²   Pressure on test specimens : 3, 6, 9, and 12 KN/m² civil lab equipments manufacturers