Subjective hearing sensation of process variations at a milling machine. How reliable will chatter marks be detected?

Research output: Contribution to journalConference articleContributedpeer-review

Contributors

  • Florian Trautmann - , Fraunhofer Institute for Machine Tools and Forming Technology (Author)
  • Björn Knöfel - , Fraunhofer Institute for Machine Tools and Forming Technology (Author)
  • Welf Guntram Drossel - , Fraunhofer Institute for Machine Tools and Forming Technology (Author)
  • Jan Troge - , Fraunhofer Institute for Machine Tools and Forming Technology (Author)
  • Markus Freund - , Fraunhofer Institute for Machine Tools and Forming Technology (Author)
  • Lars Penter - , TUD Dresden University of Technology (Author)
  • Damian Anders - , TUD Dresden University of Technology (Author)

Abstract

Intuition enables experienced machine operators to detect production errors and to identify their specific sources. A prominent example in machining are chatter marks caused by machining vibrations. The operators assessment, if the process runs stable or not, is not exclusively based on technical parameters such as rotation frequency, tool diameter, or the number of teeth. Because the human ear is a powerful feature extraction and classification device, this study investigates to what degree the hearing sensation influences the operators decision making. A steel machining process with a design of experiments (DOE)-based variation of process parameters was conducted on a milling machine. Microphone and acceleration sensors recorded machining vibrations and machine operators documented their hearing sensation via survey sheet. In order to obtain the optimal data set for calculating various psychoacoustic characteristics, a principle component analysis was conducted. The subsequent correlation analysis of all sensor data and the operator information suggest that psychoacoustic characteristics such as tonality and loudness are very good indicators of the process quality perceived by the operator. The results support the application of psychoacoustic technology for machine and process monitoring.

Details

Original languageEnglish
JournalINTER-NOISE and NOISE-CON Congress and Conference Proceedings
Publication statusPublished - 2021
Peer-reviewedYes
Externally publishedYes

Conference

Title50th International Congress and Exposition of Noise Control Engineering, INTER-NOISE 2021
Duration1 - 5 August 2021
CityWashington
CountryUnited States of America

External IDs

ORCID /0000-0002-1093-2149/work/150883637

Keywords

ASJC Scopus subject areas