THOR-50M Repeatability and Reproducibility of Qualification Tests

NHTSA-Vehicle Safety Research2022PDFTech ReportHagedorn, Alena V.Martin, PeterMillis, WilliamParent, DanUnited States. Department of Transportation. National Highway Traffic Safety Administration. Vehicle Research and Test CenterTransportation Research Center IncUnited States. Department of Transportation. National Highway Traffic Safety Administration. Office of Advanced Vehicle Safety ResearchUnited States. Department of Transportation. National Highway Traffic Safety AdministrationUnited StatesDummiesCrash testsCrash injury researchBiodynamicsOccupant kineticsRestraint systemsTHOR-50MrepeatabilityreproducibilityDOT HS 813 258FinalThis report documents NHTSA\u2019s evaluation of the repeatability and reproducibility (R&R) of the 50th percentile Test Device for Human Occupant Restraint (THOR-50M) dummy in qualification tests. Repeatability (similarity of test responses from a single dummy when subjected to repeats of a given test condition) and reproducibility (similarity of test responses from several dummies when subjected to repeats of a given test condition) of the THOR-50M were evaluated by calculating the coefficient of variation values for each qualification test using several different dummies and test labs. With few exceptions, the results didn\u2019t require a thorough review of the test procedures or necessitate the need for complete dummy inspections. Therefore, the THOR-50M R&R was deemed sufficient for use as a test tool for evaluating the safety of vehicles. Results obtained in a few tests identify areas for potential further investigation or provide opportunities to create future dummy enhancements.143