Back to Search
Start Over
A new type of bi-material coin
- Source :
- Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture. 233:2358-2367
- Publication Year :
- 2019
- Publisher :
- SAGE Publications, 2019.
-
Abstract
- This article presents a new type of bi-material coin with a polymer centre and a metal ring. The polymer-metal coin is fabricated by combination of coin minting and joining by forming in a single die stroke. The design of the coin is based on an analytical model built upon plasticity theory and plastic instability of circular plates under uniform radial edge compression. The analytical model and the bi-material coin concept are supported and validated by means of finite element modelling and experimentation. Destructive tests for pushing the polymer centre out of the metal ring demonstrate the effectiveness of the mechanical joint resulting from the interface contact pressure between the polymer and the metal. The new bi-material coin was developed to obtain new aesthetic effects for the collection market, and its polymer core can additionally be used for other applications such as the incorporation of advanced security features in high-denomination coins.
- Subjects :
- 0209 industrial biotechnology
020303 mechanical engineering & transports
020901 industrial engineering & automation
Materials science
0203 mechanical engineering
Mechanical Engineering
Coining (metalworking)
02 engineering and technology
Composite material
Type (model theory)
Ring (chemistry)
Industrial and Manufacturing Engineering
Finite element method
Subjects
Details
- ISSN :
- 20412975 and 09544054
- Volume :
- 233
- Database :
- OpenAIRE
- Journal :
- Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture
- Accession number :
- edsair.doi...........8a1b2527330fcb782e5f9dc5275c4c44