Disc Brake Intermittent Squeal Noise Study Using Experimental Techniques Based Systematic Approach

Chen, F.; Chen, Shih-Emn; Her, Jen; Harwood, P

doi:10.4271/2000-01-0731

Cited by 5 publications

(1 citation statement)

References 9 publications

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“…The Laser Imaging Laboratories of Ford Motor Company's Advanced Engineering Center have been applying holographic interferometry to automotive brake components for some fifteen years [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

<title>Holographic interferometry and its application in brake vibration and noise analysis</title>

et al. 2000

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Research and Vehicle Technology, Ford Motor Co. G. M. Brown Optical System Engineering Abstract Brake roughness and brake squeal are important issues/concerns of customer satisfaction in the automotive industry. Brake roughness is a low frequency vibration while brake squeal is a high frequency noise. Some fundamental root causes of brake roughness are rotor runout, rotor surface flat spots, etc., which cause brake torque variation that in turn produces unwanted low frequency vibration. Brake squeal is a dynamic instability and nonlinear phenomenon that occurs in a frequency range of 1KHz to 15KHz, which is in the range of sensitivity for the human ear. Squeal is usually caused by excitation of brake components brought on by slip-stick of the brake caliper pad material and rotor surface during brake actuation. This paper will provide an overview of examples that illustrate the application of holographic interferometry methodology to identify the root causes ofbrake concerns and verify engineering solutions.

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