This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Animations of a Disc Brake Generating Noise
Technical Paper
2001-01-3126
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Previous work on generating animations from real disc brake systems generating noise (squeal) has been consolidated and developed. Using the method of double pulsed laser interferometry a series of holograms (typically ten per half cycle) can be recorded from the brake during a cycle of excitation. From these holograms a considerable amount of data can be obtained about the vibration of the disc and pad surfaces. Standard methods from image processing and algorithms developed to investigate hologram fringe lines can be used to generate three-dimensional representations of the surfaces. Furthermore although part of the disc surface and even more of the pad surface are obscured by the calliper, etc., it has been possible to form a reliable numerical reconstruction of the whole disc and pad surfaces partly by using standard mathematical approximation techniques and partly by intelligent extrapolation of the available data. From these an extension of previous animations to show the full disc and pad surfaces undergoing vibration can be obtained. Using a Fourier analysis of the numerical data indicates a possible way to construct reliable mathematical models of real disc brake systems.
Recommended Content
Authors
Citation
Talbot, C. and Fieldhouse, J., "Animations of a Disc Brake Generating Noise," SAE Technical Paper 2001-01-3126, 2001, https://doi.org/10.4271/2001-01-3126.Also In
SAE 2001 Transactions Journal of Passenger Cars - Mechanical Systems
Number: V110-6; Published: 2002-09-15
Number: V110-6; Published: 2002-09-15
References
- Fieldhouse J.D. Newcomb T.P. Double Pulsed Holography Used to Investigate Noisy Brakes Optics and Lasers in Engineering 6 25 1996 455 494
- Fieldhouse J.D. Rennison M. A proposal for the classification of brake noise Proceedings of the 15th Annual SAE Brake Colloquium 1997 Phoenix, Arizona 87 93 SAE Paper Number 973027
- Fieldhouse J.D. A Proposal to Predict the Noise Frequency of a Disc Brake Based on the Friction Pair Interface Geometry SAE Brake Colloquium and Engineering Display 1999
- Kreis T. Holographic Interferometry Akademie Verlag 1996
- Talbot C.J. Al-Banawi K. Fieldhouse J.D. Generating 3-Dimensional Animations of Vehicle Brake Noise Proceedings of the SAE 2000 Brake Colloquium San Diego 105 110 SAE Paper Number 2000-01-2