WP2 – Biological tests
Volunteer tests on females and males in rear impact car crashes, the result of which will address the differences between females and males during dynamic loading, will be performed. The geometry and mass distribution of an average female seated in a car seat will also be established.
Update, August 2011
- The anthropometry of the 50th percentile female for a rear impact crash dummy model was established based on data found in the scientific published literature and the model was called EvaRID (Eva -female/RID - Rear Impact Dummy). The detail of thid specification is part of the publication of Chang et al. 2010.
- Test data from volunteer tests using male and female volunteers in identical test conditions were collected and analyzed. Corridors for dynamic female crash dummy response was established and forwarded to WP3 for initial evalutation of the EvaRID dummy model. The results were published in Carlsson et al. (2010) and presented at the IRCOBI conference.
- New volunteer tests involving eight male and eight female volunteers were performed in November 2010. The tests were carried out in a new laboratory seat that allows replication in computational modelling environments. The test matrix replicates cases with varying injury risk. The analysis of the test results will be carried out during spring 2011 and will be used in the development of the finite element model of EvaRID. The results will add new, improved evaluation data for future dummies and occupant models.
- Two test rigs for whiplash exposure have been manufactured and tested. The stationary rig will allow us to carry out an extensive parameter study to determine the influence of different load and motion parameters on the pressure-time histories in the spinal canal and on the injury risk to spinal ganglia, facet joints and cervical muscles. In addition, methods for pressure instrumentation insertion have been established in pilot studies. Methods to rapidly remove tissue samples with good quality have also been developed.
- A new acceleration sled test set-up with a high speed X-ray movie recording unit has been installed for PMHS testing in rear impact conditions. The set up will provide detailed information about the motion of individual cervical vertebrae.
Prof. Mats Svensson