Falling Dart Impact Tester
Falling Dart Impact Testeris applicable in the impact result and energy measurement of the falling dart from a certain height against plastic films and sheets with a thickness less than 1mm, which would result in 50% tested specimen failure.
PRINCIPLE
At the beginning of the test, choose test method, and estimate an initial mass and Δm. Start test. If the first specimen fails, decrease the mass of the falling dart by decreasing weight of Δm. If the first specimen is not a failure, add the mass of the falling dart by increasing weight of Δm. Test as the same. In brief, increase or decrease the Δm according to whether the former specimen is a failure or not. After 20 specimens, calculate the total number of failure specimens N. If N equals to 10, test over. If N is less than 10, add specimen and continue to test until N is equal to 10. If N is more than 10, add specimen and continue the test until the number of non-failure specimen is 10. Then the tester calculates the test results automatically. according to special formula.
CHARACTERISTICS
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PLC control unit and touch screen operation
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Two test methods integration: A & B.
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Built-in observation light;
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Pneumatic specimen clamp and release;
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Falling dart electromagnetic suspension and automatic release;
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Two start modes: Manual and foot-pedal;
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Automatic testing status judgment;
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Multi-units result display and printing;
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Mini-printer;
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RS232 interface;
TECHNICAL INDEXES
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Test Method: A, B (Optional)
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Test Range: method A: 50~2000g method B: 300~2000g
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Accuracy: 0.1g (0.1J)
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Specimen Clamping: pneumatic
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Gas Source Pressure: 0.6MPa (Users provide gas source themselves)
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Inlet Size: 8mm polyurethane pipe
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Specimen Size: >150mm x 150mm
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Power: AC 220V 50Hz
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Net weight: 70kg