Apparatus for dynamic testing of a multi-part test piece by defined and reproducible shock load

摘要

The invention concerns a method for demonstrating the reliable functioning of automobile seat-belt locks operating in conjunction with belt tensioners, as well as a test device for carrying out the method. In the event of a crash, the belt lock is subjected to a high-energy shock owing to the activation of the belt tensioner. This shock must not, however, be allowed to cause the belt lock to misfunction, nor prevent it from opening reliably when the shock load has died away. The test device proposed generates reproducible shocks of up to 40,000 g; it makes it possible to optimise the design of elements subjected to high shock loads and to demonstrate that they are functioning correctly during and after being subjected to shock loads, both for quality-control purposes and to ensure conformity with manufacturer-liability laws.