Crash test dummy?

2007 ◽  
Vol 194 (2609) ◽  
pp. 22-23
Author(s):  
Michael Freeman
Keyword(s):  
2019 ◽  
Vol 285 ◽  
pp. 00022
Author(s):  
Krzysztof Wilde ◽  
Arkadiusz Tilsen ◽  
Stanisław Burzyński ◽  
Wojciech Witkowski

The article describes a comparison of two general methods of occupants safety estimation based on a numerical examples. The so-called direct method is mainly based on the HIC (Head Injury Criterion) of a crash test dummy in a vehicle with passive safety system while the indirect method uses a European standard approach to estimate impact severity level.


2007 ◽  
Vol 40 ◽  
pp. S656
Author(s):  
T.J. Huang ◽  
C-Y Yeh ◽  
C-T Wu ◽  
Yi Dai

Author(s):  
Anna Carlsson ◽  
Johan Davidsson ◽  
Astrid Linder ◽  
Mats Y. Svensson

The objective of this study was to present the design of a prototype rear impact crash test dummy, representing a 50th percentile female, and compare its performance to volunteer response data. The intention was to develop a first crude prototype as a first step toward a future biofidelic 50th percentile female rear impact dummy. The current rear impact crash test dummy, BioRID II, represents a 50th percentile male, which may limit the assessment and development of whiplash protection systems with regard to female occupants. Introduction of this new dummy size will facilitate evaluation of seat and head restraint (HR) responses in both the average sized female and male in rear impacts. A 50th percentile female rear impact prototype dummy, the BioRID P50F, was developed from modified body segments originating from the BioRID II. The mass and rough dimensions of the BioRID P50F is representative of a 50th percentile female. The prototype dummy was evaluated against low severity rear impact sled tests comprising six female volunteers closely resembling a 50th percentile female with regard to stature and mass. The head/neck response of the BioRID P50F prototype resembled the female volunteer response corridors. The stiffness of the thoracic and lumbar spinal joints remained the same as the average sized male BioRID II, and therefore likely stiffer than joints of an average female. Consequently, the peak rearward angular displacement of the head and T1, and the rearward displacement of the T1, were lesser for the BioRID P50F in comparison to the female volunteers. The biofidelity of the BioRID P50F prototype thus has some limitations. Based on a seat response comparison between the BioRID P50F and the BioRID II, it can be concluded that the male BioRID II is an insufficient representation of the average female in the assessment of the dynamic seat response and effectiveness of whiplash protection systems.


Author(s):  
Anindya Deb ◽  
Nripen K. Saha

Designing a vehicle for superior side impact performance is an important consideration in automotive product development. The challenges involved in this design are many as side impact is a relatively short duration event and interaction between the crash test dummy and vehicle side structure including side airbag (if present) is involved, and engagement of the moving deformable barrier with the stiffer underbody of a car may not always take place (unlike in the case of frontal NCAP test in which the front rails will necessarily play a major role in energy-absorption). The safety engineer nevertheless has to set targets for relevant side crash-related variables in the initial phase of design when very limited information on vehicle structure is available. As shown in the present study, linear regression-based relationships can be utilized for setting quantitative targets for structural response and packaging-related variables for side impact safety design of a new vehicle.


2017 ◽  
Vol 52 (1) ◽  
pp. 41-46 ◽  
Author(s):  
Kai-Uwe Schmitt ◽  
Markus H Muser ◽  
Hansjuerg Thueler ◽  
Othmar Bruegger

BackgroundOne injury mechanism in ice hockey is impact with the boards. We investigated whether more flexible hockey boards would provide less biomechanical loading on impact than did existing (reference) boards.MethodsWe conducted impact tests with a dynamic pendulum (mass 60 kg) and with crash test dummies (ES-2 dummy, 4.76 m/s impact speed). Outcomes were biomechanical loading experienced by a player in terms of head acceleration, impact force to the shoulder, spine, abdomen and pelvis as well as compression of the thorax.ResultsThe more flexible board designs featured substantial displacement at impact. Some so-called flexible boards were displaced four times more than the reference board. The new boards possessed less stiffness and up to 90 kg less effective mass, reducing the portion of the board mass a player experienced on impact, compared with boards with a conventional design. Flexible boards resulted in a similar or reduced loading for all body regions, apart from the shoulder. The displacement of a board system did not correlate directly with the biomechanical loading.ConclusionsFlexible board systems can reduce the loading of a player on impact. However, we found no correlation between the displacement and the biomechanical loading; accordingly, displacement alone was insufficient to characterise the overall loading of a player and thus the risk of injury associated with board impact. Ideally, the performance of boards is assessed on the basis of parameters that show a good correlation to injury risk.


2005 ◽  
Vol 287 (3) ◽  
pp. 405-431 ◽  
Author(s):  
R. Willinger ◽  
N. Bourdet ◽  
R. Fischer ◽  
F. Le Gall

2018 ◽  
Vol 291 ◽  
pp. 133-137 ◽  
Author(s):  
Masahito Hitosugi ◽  
Takeshi Koseki ◽  
Tomokazu Hariya ◽  
Genta Maeda ◽  
Shingo Moriguchi ◽  
...  

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