Monitoring Brake Wear with Acoustics
- 提供方法
- 版元よりダウンロードリンクを連絡
- 形態
- 価格
- 一般価格(税込)：￥6,600 会員価格(税込)：￥5,280
- 文献・情報種別
- SAE Paper
No.2021-01-1053
- 掲載ページ
- 1-5(Total 5 p)
- 発行年月
- 2021年 8月
- 出版社
- SAE International
- 言語
- 英語
- イベント
- Noise and Vibration Conference & Exhibition
書誌事項
| 著者（英） | 1) Brian Hearing, 2) Kevin Grove, 3) Andrew Alden |
|---|---|
| 勤務先（英） | 1) BrakeAudit LLC, 2) Virginia Tech Transportation Institute, 3) Virginia Tech Transportation Institute |
| 抄録（英） | A new approach for detecting problems with vehicle brakes by analyzing sounds emitted during braking events is proposed. Vehicle brakes emit acoustic energy as part of the braking process; the spectra of these sounds are highly dependent on the mechanical condition of the brake and can be used to detect problems. Acoustic theory indicates that as brake linings wear thinner the resonant frequency of the shoe or pad increases, potentially enabling the monitoring of lining wear through passive acoustic sensors. To test this approach, passive acoustic sensors were placed roadside at the exit of a transit bus facility for 9 months. The sensors collected almost 10,000 recordings of a fleet of 160 vehicles braking over a variety of conditions. Spectra of vehicles that had brake work performed during this period were analyzed to compare differences between new and worn friction linings. It was found that the spectra changes as friction linings wear, in concurrence with acoustic theory, where resonant frequencies increased as the brake linings wore thinner. The use of this information in predictive maintenance could significantly reduce the maximum time a problem could go undetected between periodic inspections. 翻訳 |
