Impact tester

The impact tester is an analytical device, which provides a prognosis for example of the behaviour of the coating-substrate bond under mechanical stress. The fatigue limit under alternating stress of a PVD coating can be determined very quickly without having to resort to expensive test bench tests.

The continual impact of a hard metal or ceramic ball on a surface will simulate dynamic stress. During a series of tests, individual areas of the material surface are subjected to different levels of stress until the coating ruptures.

The results gained from these tests are adequate documented. Using FEM-based mathematical models, the specific Wöhler curves and Smith diagrams for each particular coating-substrate bond can be detected.

General technical data
Outside dimensions 1,000 mm x 700 mm x 0.800 mm
(Evaluation and control unit, w x d x h)

600 mm x 570 mm x 1,800 mm
(Impact tester unit, w x d x h)
Space required 2,000 mm x 1,200 mm (w x d)
Total weight 120 kg
Impact force 150N – 1500N (± 3%)
Force measurement, deviation 0.1 N
Frequency 50 Hz
Ball support 5,0 mm balls
Balls 10 balls, each 5.0 mm
Noise level < 60 dBA
Power supply 230 VAC, 50 Hz
Compressed air 5 bar
Ambient conditions 15°C - 30°C
Time required, for 1 million impacts 5 hours, 30 minutes
Desktop PC, 17” CRT monitor Features state-of-the-art, licensed software