Pulse shaping techniques for a high-g shock tester based on collision principle

Area of Science:

• Mechanical Engineering
• Materials Science

Background:

• High-g shock testing is crucial for evaluating product durability under extreme conditions.
• Existing shock testers may lack the precision to generate specific acceleration profiles.
• The developed tester utilizes a collision principle with a velocity amplifier.

Purpose of the Study:

• To investigate the practicability of pulse shaping techniques for a novel high-g shock tester.
• To theoretically model and experimentally validate shock peak acceleration and duration.
• To demonstrate the tester's capability in generating controlled high-g shock pulses.

Main Methods:

• Development of a theoretical model for shock pulse characteristics.
• Deduction of formulae for peak acceleration and duration.
• Experimental validation using various impact velocities and pulse shaper materials.

Main Results:

• The theoretical model accurately predicts shock tester performance.
• Integrated use of impact velocities and pulse shapers enables generation of desired high-g pulses.
• The shock tester successfully produces predetermined acceleration levels.

Conclusions:

• Pulse shaping techniques are effective for practical high-g shock testing.
• The developed shock tester is validated for generating controlled high-g shock pulses.
• This technology facilitates targeted resonance excitation in tested items.