Burst Pressure Study in Damaged Hydraulic Rigid Brake Pipes on Passenger Cars
ISSN: 0148-7191, e-ISSN: 2688-3627
Published January 13, 2020 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Hydraulic brake pipes are responsible for fluid flows and as consequence the proper functionality of the most important safety system in passenger vehicles. Even so, this component has no much development since it was applied in the 1930s. In fact, the brake pipes can be particularly vulnerable components, being mainly in an exposed condition under the vehicle and near of components with relative movement. Externally it needs to survive a wide range of environmental conditions whereas internally it must withstand pressurized brake fluid. Brake pipes failures is an obvious safety hazard. Using simulations with car body, burst and corrosion bench test and multiple linear regression, this paper attempts to present, basing the pipes lifetime in the burst bench test, how the pipes are really vulnerable or not to damages caused by interference with other components, corrosion or even in frequent abrasion. As well as pipes behavior during interference, how such as corrosion in spot exposed regions degrades the pipes, how such as quantity, type and bending location influence the lifetime, which are the most relevant damage factors, how the damage usually occurs on vehicles, and specify an equation capable of projecting burst pressure considering the damage dimensions as variables. This paper shows the most vulnerable regions and pipes diameter most affected, clarify how the bends impact on the pipes lifetime and defines a equation able to correlate a pipe lifetime prediction based on the damage dimensions.
CitationCiolfi, M., Pacheco, C., Mathias, R., Souza da Silva, A. et al., "Burst Pressure Study in Damaged Hydraulic Rigid Brake Pipes on Passenger Cars," SAE Technical Paper 2019-36-0001, 2020.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
|[Unnamed Dataset 2]|
|[Unnamed Dataset 3]|
- McAuley, I. “Copper-nickel brake tubing in the automotive industry”. Materials & Design 12.4 (1991): 228-230, doi:10.1016/0261-3069(91)90171-Y.
- American National Standards Institute . “Brazed Double Wall Low Carbon Steel Tubing”: SAE J527 JAN83. SAE, 1984.
- Deutsches Institut für Normung e. V . “Hydraulic braking systems; brake pipes, flares“: DIN 74234 SET92.
- American Society for Testing and Materials . “Specification for Cooper-Brazed steel tubing”: ASTM A 254 1997.
- Associação Brasileira de Normas Técnicas . “Tubos de aço de parede dupla, para condução de fluidos”: NBR 5443 1997. ANBT 2018.
- American National Standards Institute . “Tests and Procedure for Carbon Steel and Low Alloy Steel Tubing”: SAE J1677 SEP2009. SAE, 2009.
- Camargo, E., Fernandes, C., Sprandel, L., Castro, R., Sousa, R., Roza, L., Ciolfi, M. “Pedal Feeling Study Basis on Customer Braking Behavior”, SAE Technical Paper 2015-36-0006, 2015, doi:10.4271/2015-36-0006.
- American Society of Mechanical Engineers . “Boiler & Pressure Vessels”. Section VIII, division I. ASME, 2004.
- American Society of Mechanical Engineers . “Material Properties”. Section II, part D. ASME, 2004.
- Friedman, J., Hastie, T. and Tibshirani. R. “The elements of statistical learning”. Vol. 1. No. 10. New York, NY, USA: Springer series in statistics, 2001: 10
- Mitchell, T.M. "Machine learning. 1997". Burr Ridge, IL: McGraw Hill 45.37 (1997).
- Coelho, A.C., Cunha, J. "Regressão linear múltipla." Análise multivariada: para os cursos de administração, ciências contábeis e economia. São Paulo: Atlas (2007): 131-231.
- Ciolfi, M. “Multiple linear regression using pression non zeros dataset”. https://github.com/mciolfi/Papers/blob/master/SAE/Brake%20Pipes/Multiple_linear_regression.py. Access on 07 Apr 2019.