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Comparisons of Devices for Measuring Acceleration vs. Time in Braking Tests
Technical Paper
2008-01-0180
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The coefficient of friction between a vehicle's tires and the roadway is a key parameter in any accident reconstruction. With the proliferation of vehicle dynamics software, it is often important to have more details regarding the tires interaction with the road than simply the average deceleration rate. Devices which can provide the peak friction as the braking develops, along with the average deceleration during the fully developed sliding phase, are necessary. There are now products widely available to the accident reconstruction market which provides these parameters as well as detailed acceleration vs. time curves. The following products capable of providing these results were tested: Accelerex, Vericom VC3000, and two general purpose accelerometers made by Silicon Designs and Dimension Engineering.
Tests were conducted on wet and dry asphalt surfaces using a variety of passenger vehicles and transit buses which confirmed the agreement between these devices. Braking build-up time data is also presented.
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Authors
Topic
Citation
Luker, C., "Comparisons of Devices for Measuring Acceleration vs. Time in Braking Tests," SAE Technical Paper 2008-01-0180, 2008, https://doi.org/10.4271/2008-01-0180.Also In
References
- Allen W Rosenthal T Klyde D Chrstos J Vehicle and Tire Modeling for DynamicAnalysis and Real-Time Simulation SAE Paper 2000-01-1620 Warrendale, PA 2000
- Datentechnik D PC-Crash Technical Manual Version 6.2 2001
- Neptune J Flynn J Chavez P Underwood H Speed from Skids: A Modern Approach SAE Paper 2000-01-1620 Warrendale, PA 2000
- Brach R Rudny D Sallmann D Comparison of Tire Friction Test Methodologies Used in Accident Reconstruction SAE Paper 980367 Warrendale, PA 1998
- Eubanks J Haight R Malmsbury R Casteel D A comparison of Devices Used to Measure Vehicle Braking Deceleration SAE Paper 930665 Warrendale, PA 1993
- Standard Practice for Accelerometer Use in Vehicles for Tire Testing West Conshohocken, PA 2002
- Grenke B Digital Filtering for J211 Requirements using a Fast Fourier Transform Based Filter SAE Paper 2002-1-0796 Warrendale, PA 2002
- Varat M Kerkhoff J Husher S Armstrong C Shuman K The Analysis and Determination of Tire-Roadway Frictional Drag SAE Paper 2003-01-0887 Warrendale, PA 2003
- Goudie D Bowler J Brown C Heinrichs B Siegmund G Tire Friction During Locked Wheel Braking SAE Paper 2000-01-1314 Warrendale, PA 2000