An innovative material inherent load sensor based on martensite formation

authored by: Bernd Arno Behrens, Kathrin Voges-Schwieger, Anas Bouguecha, Richard Krimm, Jan Jocker, Jens Schrödter
Abstract: Within the framework of the Collaborative Research Center (CRC) 653 "Gentelligent Components in Their Lifecycle" a study on a novel material inherent load sensor based on phase transformation is carried out. In metastable austenitic steels, mechanical load induces a partial transformation of austenite in martensite. The martensite fraction correlates to the magnitude of the load applied to the material. The threshold of stress to initiate the phase transformations can be decreased locally by means of prior forming. A subsequent change of the martensite fraction within the stamped areas can be determined and gives information concerning the load history. The important advantage of this approach is the decrease of the stress threshold which is necessary to initiate the formation of martensite. With this property, the stresses below yield stress can be detected by means of martensite fraction. Therefore a mathematical model to consider the load induced formation of martensite in FE simulation was developed. With the help of this model, the development of the load sensor is assisted. Other main topics of this paper include an approach to detect the magnitude of the load with the help of the sensor technology and the experimental research.
Organisation(s): Institute of Metal Forming and Metal Forming Machines
Type: Conference contribution
Volume: SPL. ISSUE
Pages: 1339-1342
No. of pages: 4
Publication date: 01.01.2012
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Condensed Matter Physics, Physical and Theoretical Chemistry, Metals and Alloys, Materials Chemistry
: Details in the research portal "Research@Leibniz University"

BibTeX

@inproceedings{d90855d16cf44a8ea669fe81cecb288b,
title = "An innovative material inherent load sensor based on martensite formation",
abstract = "Within the framework of the Collaborative Research Center (CRC) 653 {"}Gentelligent Components in Their Lifecycle{"} a study on a novel material inherent load sensor based on phase transformation is carried out. In metastable austenitic steels, mechanical load induces a partial transformation of austenite in martensite. The martensite fraction correlates to the magnitude of the load applied to the material. The threshold of stress to initiate the phase transformations can be decreased locally by means of prior forming. A subsequent change of the martensite fraction within the stamped areas can be determined and gives information concerning the load history. The important advantage of this approach is the decrease of the stress threshold which is necessary to initiate the formation of martensite. With this property, the stresses below yield stress can be detected by means of martensite fraction. Therefore a mathematical model to consider the load induced formation of martensite in FE simulation was developed. With the help of this model, the development of the load sensor is assisted. Other main topics of this paper include an approach to detect the magnitude of the load with the help of the sensor technology and the experimental research.",
keywords = "Finite element analysis, Martensite formation, Metal forming, Sensor technology",
author = "Behrens, {Bernd Arno} and Kathrin Voges-Schwieger and Anas Bouguecha and Richard Krimm and Jan Jocker and Jens Schr{\"o}dter",
year = "2012",
month = jan,
day = "1",
language = "English",
isbn = "9783514007970",
volume = "SPL. ISSUE",
pages = "1339--1342",
booktitle = "Proceedings of the 14th International Conference on Metal Forming, METAL FORMING 2012",
publisher = "Wiley-VCH Verlag",
address = "Germany",
note = "14th International Conference on Metal Forming, METAL FORMING 2012 ; Conference date: 16-09-2012 Through 19-09-2012",
}