Falling Dart Impact Tester - QT-FDIT

ASTM D1709, ISO 7765-1, JIS K7124

It is important to understand the impact resistance of packaging materials for since it will be subjected to impacts during transportation and loading. It is widely used in R&D departments, laboratories, packaging industries, inspection agencies, and film manufacturing units etc. to determine the maximum energy that their products can withstand without failure.

QT-FDIT determines the energy required for plastic films and foils to fail under the impact of a free falling dart under specific conditions. This energy is expressed in terms of the weight of the dart falling from a specified height which would result in 50% failure of specimens tested.  

Applications

QT-FDIT is used to test impact resistance of various paper and plastic films, membranes, composite films, metallic foil, etc in manufacturing units, laboratory, and research institute for quality control of packaging and packaging materials and development of new products.

Features

• LCD Display;
• Accurate test results;
• Light weight desk top design;
• Automated data processing, and result calculation;
• Inbuilt printer to print reports;
• Two modes of operation, A and B (Optional);
• Pneumatic clamping to increase testing efficiency;

Operation

Place the sample on the fixture, press the sample button and close the fixture in such a way that the sample is held properly. Then select the method of testing and insert the test parameters, place the dart and press the start button, observe the damage. If the dart hasn’t damaged the test sample, increase the weight and repeat the procedure until the sample is damaged or broken after that, press the broken button and press the calculate button, then the tester calculates the test results automatically.

Test Methods

Test method A: specifies a dart with a 38 mm (1.5") diameter dropped from 0.66 m (26")

This test method may be used for films whose impact resistances require masses of about 50 g or less to about 2 Kg. The standard technique is the staircase method. By this technique, a uniform missile weight increment is employed during the test and the missile weight is increased or decreased by uniform increment after test of each specimen, depending upon the result (fail or not fail) observed for the specimen.

Test method B: specifies a dart with a 51 mm (2") diameter dropped from 1.5 m (60")

Its applicable range is from about 0.3 Kg to about 2 Kg. This method employs testing specimens in successive group of ten. One missile weight is employed for each group and missile weight is varied in uniform increments from group to group.
Both techniques give equivalent results both as to the values of impact failure weight which are obtained and as to the precisions with which they are determined.