A micromachined, high signal-to-noise ratio, acoustic emission sensor and its application to monitor dynamic wear

Guo Hua Feng, Ming Yiang Tsai, Yeau Ren Jeng

研究成果: Article同行評審

11 引文 斯高帕斯(Scopus)

摘要

This paper presents a micro-machined, acoustic emission (AE) sensor, with a novel, corrugated PVDF sensing core. Using an improved fabrication process, a cost-effective sensing unit and more reliable device packaging method are presented. The curvatures of the stacked PVDF sensing layers, formed by a micro-embossing technique, using upper and lower dies of different geometries, are studied. The fabricated AE sensor is found to exhibit superior signal-to-noise ratio (SNR) and performs about 13 times better than a commercially available AE sensor, based on the results of a steel-ball drop test. The sensor is used to monitor the operation of ball bearings with different levels of wear. An experimental setup for producing ball bearings with different wear levels is also presented. Through frequency spectrum analysis, results are found to demonstrate its efficiency in detecting dynamic friction. This can be very useful in examining the condition of structures and predicting the likelihood of possible future failures.

原文English
頁(從 - 到)56-65
頁數10
期刊Sensors and Actuators, A: Physical
188
DOIs
出版狀態Published - 2012 十二月

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

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