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Energy Supply and Time Dependence on Filament Deformation
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English
Abstract
Many reports and papers have been published discussing light bulb filament deformation including incandescent/non-incandescent bulbs at impact and hot shock versus cold shock. The focus of the present research is to evaluate impact pulse as it applies to the time relationship between energy application/deapplication and filament deformation in brake/signal light bulbs. Also, the deformation characteristics of average tail light, brake/signal light, marker light, and halogen bulbs were examined. The study will record filament behavior of these light bulbs during impacts produced by a pendulum impact apparatus. Results of the subject research indicate that filament deformation can be expected in a light bulb operating in flashing mode at the time it is impacted. Additionally, deformation characteristics of interchangeable light bulbs produced by different manufacturers showed widely varied results relative to filament deformation when subjected to similar impact pulses.
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Citation
Christoffersen, S., Wallingford, J., Greenlees, W., Minihan, T. et al., "Energy Supply and Time Dependence on Filament Deformation," SAE Technical Paper 970945, 1997, https://doi.org/10.4271/970945.Also In
References
- Baker Stannard J, et al “Lamp Examination for On and Off in Traffic Accidents,” Topic 823 from Traffic Accident Investigation Manual Northwestern University Traffic Institute Evanston IL 1986
- Keskin Tanner A. et al “Brake Filament Deformation Analysis for Vehicular Collisions,” Society of Automotive Engineers, Inc., Technical Paper No. 880233 March 1988
- Dydo, James R. et al “Response of Brake Light Filaments to Impact,” Society of Automotive Engineers. Inc., Technical Paper No. 880234 March 1988
- Fries, Thomas R. Lapp, Richard O. “Accident Reconstruction - Response of Halogen Light Filaments During Vehicle Collisions,” Society of Automotive Engineers, Inc., Technical Paper No. 890856 March 1989
- Flannagan, Michael Sivak, Michael “An Improved Braking Indicator,” Society of Automotive Engineers. Inc., Technical Paper No. 890189 March 1989
- Kawakami, Akira et al “Accident Information for Traffic Accident Reconstruction - The Role of the Automobile Lamp Filament,” Society of Automotive Engineers, Inc., Technical Paper No. 930661 March 1993
- Harmeling, David E. Johnson, Alan A. “Metallurgical Theory Underlying Post-Impact Lamp Filament Examinations,” Accident Reconstruction Journal 5 5 September/October 1993
- Carrera, Alexandra C. et al “Lumped-Parameter Modeling of Frontal Offset Impacts,” Society of Automotive Engineers, Inc., Technical Paper No. 950651 March 1995