BAM Test Site Technical Safety

118-kJ Drop test machine:
1 Impact foundation with steel plate
2 Drop weight
3 Electro-mechanic release system
4 Guiding system, slide rails
5 Steel frame
6 Laser vibrometer

The drop test machine enables a clearly specified component load by a precisely positioned falling test object or drop weight. Loading rates corresponding to a drop velocity up to 15.3 m/s can be achieved at maximum drop energy of 118 kJ. Test objects with a width up to 1600 mm can be tested with the help of two adjustable guide rails.

To characterise materials and components behaviour under dynamic loading conditions, a number of of measuring methods are available. These include the measurement of displacement, velocity and acceleration vs. time as well as strains and forces.

Applications and typical tests

Components, component-size specimens and materials tests at elevated and higher loading rates:

• Crash and crush tests
• Impact and dynamic bending tests
• Compression and deformation tests

Testing and simulating

• Impact resistance and crash-worthiness
• Impact on components, pipes, composites
• Crash protection and stability
• Developing materials models for FE analysis

Measuring and test methods

• Signal acquisition using multi-channel measuring devices with wideband differential bridge amplifier (128 measuring channels, sampling rates up to 10 MSamples/s each channel)
• Acceleration, strain and temperature sensors
• Load cells up to 5 MN
• High-speed video for digital image processing
• Laser vibrometer for optical measurement of displacement and speed
• Digital close-range photogrammetry and fringe projection method for optical displacement and deformation measurement

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