Acoustic Process Monitoring during Transient Precision Forging of High Strength Components

authored by: V. Böhm, O. Bruchwald, W. Reimche, Fr W. Bach, D. Odening, B. A. Behrens
Abstract: The structure-borne sound, displacement and continuous acoustic emission measuring systems provide new possibilities for detecting very short term transient events over a broad frequency range during the precision forging of gear toothed parts such as gearwheels and pinion shafts. It is also possible to analyse these events by employing wavelet analyses over these frequency ranges. With the aid of these methods, the compressivedeformation, flow and frictional processes as well as the die-filling were evaluated during precision forging by selectively using the displacements and frequencies in order to recognise early damage and to sensitively monitor the forging process. The influence of the temperature, lubrication and impurities on the forming behaviour and on the quality features of the precision forged high strength components were recorded and assessed during the process sequence. A novel sensitive monitoring technology for transient production processes with respect to early damage recognition resulted from analysing the signal profiles using the wavelet transformations of a feature and vector analysis.
Organisation(s): Institute of Materials Science
Institute of Metal Forming and Metal Forming Machines
Type: Article
Journal: Metallurgical and Mining Industry
Volume: 3
Pages: 91-101
No. of pages: 11
ISSN: 2076-0507
Publication date: 01.01.2011
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Mechanical Engineering, Industrial and Manufacturing Engineering, Metals and Alloys, Earth and Planetary Sciences (miscellaneous), Electrical and Electronic Engineering
Electronic version(s): http://www.metaljournal.com.ua/assets/Uploads/attachments/91Bohm.pdf (Access: Unknown)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{0335b9c1fd104236811260239fd3c3ab,
title = "Acoustic Process Monitoring during Transient Precision Forging of High Strength Components",
abstract = "The structure-borne sound, displacement and continuous acoustic emission measuring systems provide new possibilities for detecting very short term transient events over a broad frequency range during the precision forging of gear toothed parts such as gearwheels and pinion shafts. It is also possible to analyse these events by employing wavelet analyses over these frequency ranges. With the aid of these methods, the compressivedeformation, flow and frictional processes as well as the die-filling were evaluated during precision forging by selectively using the displacements and frequencies in order to recognise early damage and to sensitively monitor the forging process. The influence of the temperature, lubrication and impurities on the forming behaviour and on the quality features of the precision forged high strength components were recorded and assessed during the process sequence. A novel sensitive monitoring technology for transient production processes with respect to early damage recognition resulted from analysing the signal profiles using the wavelet transformations of a feature and vector analysis.",
keywords = "Acoustic emission measurements, Die-filling, Displacement measurements, Early damage recognition, Gearwheels, Pinion shafts, Precision forging, Quality assessment, Structure-borne sound measurements, Wavelet",
author = "V. B{\"o}hm and O. Bruchwald and W. Reimche and Bach, {Fr W.} and D. Odening and Behrens, {B. A.}",
year = "2011",
month = jan,
day = "1",
language = "English",
volume = "3",
pages = "91--101",
journal = "Metallurgical and Mining Industry",
issn = "2076-0507",
publisher = "Ukrmetallurginform {"}STA{"} Ltd.",
number = "7",
}