Contactless detection and monitoring of micro- and macrowear using imaging methods (TET.5120)
Project nummer:
tet5120
Omschrijving van het onderzoek
The goal of this project is the development of measurement tools (hardware and software) for the detection of micro- and macrowear of materials, using optical methods. Knowledge about the nature and extent of wear is of growing importance, because of the ever increasing demand for better performance of tools and components/products. Just a few applications for which no adequate measurement tools are available are:
bore-polishing in combustion engines
detection of damage of sheet products in metal forming processes
microsystems for positioning, used for high density data recording
micro-optical systems with out-of-plane optical components.
Traditional methods to detect or quantify wear loose applicability because the amount of wear to be detected becomes smaller and smaller with the increasing wear resistance of many materials and reducing size of the components (micro-mechanisms). Measuring (micro)wear during an experiment is not possible with available techniques such as interference microscopy.
The following is proposed:
- Development of a new online wear measurement methodology, based on optical methods. These techniques allow faster and hence dynamic measurements of wear, and are essentially contactless. The aim is to measure local height changes of the surface in the order of 0.1 mm and less during an online wear experiment.
- High-resolution height data can be obtained offline using methods such as interference microscopy and atomic force microscopy. This part of the project will focus on efficient and accurate processing and analysis of the acquired height data, to be able to measure local height changes down to 1 nm.
The developed techniques are to be applied to both micro-mechanical systems and macro-mechanical systems, components and/or machine elements in measuring extremely small geometrical changes. For application in micro-mechanical systems, a depth resolution down to 1 nm is necessary. This research includes the design of special structures to evoke wear (and in microstructures: friction) in a reproducible way, in order to quantify its effects. Various (international) research centres and companies consider increased knowledge of extreme importance.
Resultaten van het onderzoek
More information can be found at the websites of the participating research groups:
Gebruikers
Five companies are involved in this research project.
Projectleider
| Prof.dr.ir. P.P.L. Regtien |
Universiteit Twente
Elektrotechniek
Lab. Meettechniek en Instrumentatie |
Postbus 217
7500 AE Enschede
|
Status van het project
| Gestart | : 01-07-2000
|
| Einddatum | : 22-11-2004
|
Trefwoorden
Beeldbewerking, beeldherkenning, slijtage, tribologie.
.