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New technique for determining the critical loads of a thin coating on a tool–steel substrate by considering the initiation of cracks in the coating
- Source :
- Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture. 226:1205-1212
- Publication Year :
- 2012
- Publisher :
- SAGE Publications, 2012.
-
Abstract
- In this article, a mathematical algorithm is derived to accurately determine the critical load of indentation for the initiation of cracks on the surface of a hard coating on a soft substrate, based on the measurement of the diameter of circumferential cracks in micro-indentation impressions. The critical load required for the initiation of the first crack predicted using this technique is shown to be in good agreement with experimental results, indicating the feasibility of the technique proposed. The rationality of the approach proposed was further explored by investigating the fracture mechanism of the surface in a multilayer-coated surface using a finite element model, which was developed with the parameterised modelling approach, in combination with the cohesive-zone model.
- Subjects :
- 010302 applied physics
Surface (mathematics)
Materials science
Critical load
Mechanical Engineering
02 engineering and technology
Substrate (printing)
engineering.material
021001 nanoscience & nanotechnology
01 natural sciences
Industrial and Manufacturing Engineering
Finite element method
Coating
Indentation
0103 physical sciences
Tool steel
Fracture (geology)
engineering
Composite material
0210 nano-technology
Subjects
Details
- ISSN :
- 20412975 and 09544054
- Volume :
- 226
- Database :
- OpenAIRE
- Journal :
- Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture
- Accession number :
- edsair.doi...........1e63be9451ac9b5c31bc970e98f6b650