By Martin Trapp
Buzz, squeak, and rattle (BSR) is the car time period for the audible engineering demanding situations confronted by means of all motor vehicle and part engineers. Minimizing BSR is of paramount value whilst designing automobile elements and entire car assemblies. this can be the one publication devoted to the topic. It presents a self-contained connection with the history conception, checking out, research, and removing of BSR. Written for practising engineers and researchers, the ebook has a robust concentrate on real-world purposes making it an ideal handbook for these operating during this very important zone. Chapters from top specialists from around the motor industry-with enter from the layout and learn labs of Ford, Toyota, Daimler-Chrysler and GM-review the suggestions to be had and supply readers with the proper physics, structural dynamics and fabrics technological know-how to deal with their very own BSR issues.
- The merely booklet to be had on car BSR (buzz, squeak and rattle)-the #1 explanation for criticism on new cars
- Comprehensive and authoritative, with contributions from major figures within the box and companies comparable to Ford, Toyota and Daimler-Chrysler
- Enables readers to appreciate and make the most of the advanced instruments used to evaluate, establish and rectify BSR in automobile layout and testing
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Extra resources for Automotive Buzz, Squeak and Rattle. Mechanisms, Analysis, Evaluation and Prevention
2. Experimental Set up Part 1: Friction/Sliding While there are some established friction measurement techniques  they do have drawbacks such as “ploughing” (cross-axes sliding) of samples and they have limited ability to capture acoustic output. The flexure-based friction test apparatus used in this study was developed under a collaborative effort between the Ford Motor Company and MB Dynamics, Inc. 1. 1: (a) Outside view of material pair test chamber. (b) Inside view of material pair test chamber.
16] T. Judek, N. Eiss, M. Trapp, H. Loftus, Material friction pair testing to reduce vehicle squeaks, Proc. 14th Int. Modal Analysis Conf. (1996) 502e510.  N. Eiss, B. McCann, Friction instabilities in polymer-polymer sliding systems, Tribology Trans. 36 (1993) 686e692.  N. Eiss, E. Lee, M. Trapp, Frictional behavior of automotive interior polymeric material pairs, SAE Paper 972056 (1997) 1479e1496. M. Tolstoi, Significance of the normal degree of freedom and natural normal vibrations in contact friction, Wear 10 (1967) 199e213.
1. 1: (a) Outside view of material pair test chamber. (b) Inside view of material pair test chamber. sound pressures, and a design that includes equipment compliances which are much smaller than the compliances of the material pair being analyzed. The last property of the tester helps to reduce its undesirable vibration during testing, which represents a large concern for previous test machines [16e18]. To produce horizontal linear motion between the two tested material samples, the tester uses an in-line electro-dynamic shaker connected to a moving table.
Automotive Buzz, Squeak and Rattle. Mechanisms, Analysis, Evaluation and Prevention by Martin Trapp