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Influence of the pre-tightening of seat belts on the loads acting on rear seat occupants during a frontal collision
| Content Provider | Semantic Scholar |
|---|---|
| Author | Żuchowski, Andrzej Wicher, Jerzy |
| Copyright Year | 2013 |
| Abstract | Results of investigations of the dynamic loads acting on the occupants of backseats in a passenger car during a frontal collision and an analysis of such loads have been presented. The analysis was based on results of experimental tests carried out on a crash-test stand at the Automotive Industry Institute (PIMOT). It was focused on the influence of the pre-tightening of seat belts on the state of loading of test dummies representing a 50 centile male (M50) and a child aged about 10 years. The child dummy was placed in a child safety seat (which included both a seat cushion and a backrest), designed for children with a mass of 15 to 36 kg. The dummies were restrained with the use of standard seat belts. The quantities taken into consideration included head and thorax accelerations measured for both dummies and, for the M50 dummy, forces and moments acting on the neck, thoracic deflection, and axial forces in the thighs. In the analysis, results of three crash tests with different seat belt pre-tightening force values were taken into account. To estimate the risk of injury, indicators of biomechanical immunity of the human body to the effects of impact loads were used. Conclusions drawn from a frame-byframe analysis of films recorded by means of high-speed cameras were also taken into consideration at this work. The benefits of adequate pre-tightening of seat belts by the user, especially by seat belt pretensioners, were confirmed. In the case of seat belts with pretensioners, the risk of severe injury to an adult passenger (AIS4+) was estimated at 18%, i.e. about a half of that incurred when seat belts without pretensioners are used. For a child, the pretensioners were found to reduce this risk to 9%, i.e. to about one-third. |
| Starting Page | 93 |
| Ending Page | 110 |
| Page Count | 18 |
| File Format | PDF HTM / HTML |
| DOI | 10.5604/1234754X.1066779 |
| Volume Number | 60 |
| Alternate Webpage(s) | http://7401.indexcopernicus.com/fulltxt.php?ICID=1066779 |
| Alternate Webpage(s) | https://doi.org/10.5604/1234754X.1066779 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
