NDLI: Modification of Shock Resistance for Cutting Tools Using Functionally Graded Concept in Multilayer Coating

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Modification of Shock Resistance for Cutting Tools Using Functionally Graded Concept in Multilayer Coating

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Vaziri, M. R. Mehrian, S. M. Nowruzpour Naei, M. H. Ahmad, Jamal Y. Sheikh
Copyright Year	2015
Abstract	In this study, thermal analysis and optimization of the material composition in functionally graded (FG) cutting tools were carried out to achieve the minimum thermal stress. Since cutting tool particularly rotating ones in milling process are exposed to thermal shock during machining, a complicated analysis is required to analyze the thermal shock response. Therefore, a generalized coupled thermoelasticity theory of Lord–Shulman based on second sound effect is adopted. Lord–Shulman theory, as a generalized coupled thermoelasticity, is chosen as governing equation in terms of temperature and displacement. The coupled equations are transferred to Laplace domain and then Galerkin finite element method is employed to solve the equation in the Laplace domain. Then, a numerical Laplace inversion has been applied to transform back the equation from Laplace domain to real time. Results are obtained for several material compositions so that the proper composition will be found for design. It is shown that FG materials (FGMs) exhibit lower stresses, lower displacement, and lower temperature levels compared to multilayer materials. Furthermore, the effect of FGM is increased by increasing the power law index, representing the change in concentration.
Starting Page	011014
Ending Page	011021
Page Count	8
File Format	PDF
ISSN	19485085
e-ISSN	19485093
Journal	Journal of Thermal Science and Engineering Applications
Volume Number	7
Issue Number	1
DOI	10.1115/1.4028982
Language	English
Publisher	The American Society of Mechanical Engineers
Publisher Date	2015-03-01
Access Restriction	Subscribed
Subject Keyword	Coating processes Coatings Cutting tools Displacement Stress Temperature Thermal shock Thermoelasticity
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Fluid Flow and Transfer Processes Materials Science Engineering

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