Impact test apparatus
US6212954A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1999 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Jul 26, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M17/0078
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A compression wave or pulse generation apparatus and method are capable of generating a compression wave or pulse in a vehicle or large structure under test, and include an impactor bar or member held during use adjacent one end of the vehicle or large structure under test and supported to resist movement in a direction away from the large vehicle or structure. The impactor bar is preloaded in the direction away from the vehicle by a hydraulic or pneumatic actuator. In use, the preload force can be quelled suddenly, for example, by triggering an explosive bolt in the impactor bar, so that the impactor bar is released into impact or energy transfer with the vehicle or large structure under test to transmit a compression wave or pulse through the vehicle or structure. Energy flow transducers in the form of elongated bar members are selectively arranged to measure the mechanical energy propagated along the vehicle or structure subjected to the stress wave under simulated crash conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.