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Dart Impact Tester  DIT

The falling dart tester determines the impact resistance of plastic film by the free falling dart method. The apparatus establishments the energy required to tear film specimens under specified conditions of impact of a free falling dart. The energy is expressed in terms of the weight of a dart 50% if the film specimens fail under the conditions specified. A range of weight is provided to be performed on various film thickness. The working range of the weight is estblished by finding the weight that will just break the sample film.

Significance:

The unit employs a dart, with a 38mm diameter hemispherical head, dropped from a height of 660mm. This unit may be used for films whose impact resistance requires masses of approximately 50gms to 2 kg to fracture them.

Standard Compliance:

ASTM D 1709
IS 2508