Electrodynamic Shock Testing

WHAT IS ELECTRODYNAMIC SHOCK TESTING and why is it important?

Shock testing reduces the risk of product failure in the field, by simulating shock conditions that products are exposed to during their lifetime. This may be from handling, transportation, or within the equipment’s normal service environments.

The test specification defines the applied shock conditions, these are expressed in pulse shape, duration and acceleration, normally defined in g peak or m/s².

WHY CHOOSE TÜV SÜD FOR ELECTRODYNAMIC SHOCK TESTING?

Shock pulses come in many different pulse shapes, common are Half-Sine, Trapezoidal and Terminal Peak Sawtooth. Shock pulses are often applied at least 3 times in both the positive and negative direction, for each of the products axes (Vertical, Longitudinal and Lateral).

Main benefits of using an electrodynamic shaker to replicate shock conditions are:

• Testing can be completed with respect to gravity

• Repeatability
• Controlled pulse
• Pulse can be inverted without the need to rotate the product
• Test duration dramatically reduced

We can provide manufacturers with the following testing services:

• Half Sine Pulse Shape
• Trapezoidal Pulse Shape
• Terminal Peak Sawtooth Pulse Shape
• Repetitive shocks up to a 0.5Hz repetition rate
• SRS Shock
• Up to 200g (duration and load dependant)
• Up to 30ms (acceleration and load dependant)

We provide electrodynamic shock testing to many specifications including the following common standards:

• IEC 60068

• RTCA/DO-160
• MIL-STD-810
• DEF-STAN 00-35
• DEF-STAN 08-123
• STANAG
• ETSI
• AECTP

Any test not on our UKAS scope which is within our capability can be added quickly through our flexible schedule, which is a rare privilege granted to us by our accrediting authority.

Capabilities:

• 4 electrodynamic shakers (3 axes, with respect to gravity) - Largest electrodynamic shaker: 160kn thrust, 1500 x1500mm slip table
• 1 hydraulic shaker
• Up to 7-tonne load capacity
• All electrodynamic shakers capable of 2 inch pk-pk displacement
• Up to 64 measurement channels
• Bespoke thermal hood manufacture with temperature range of -60 to +100⁰C
• Up to 32 thermocouple channels logged
• Bespoke fixture design