Accession Number : ADA465552


Title :   Finite Element Analysis of Multilayered and Functionally Gradient Tribological Coatings With Measured Material Properties (Preprint)


Descriptive Note : Journal article


Corporate Author : UNIVERSAL TECHNOLOGY CORP DAYTON OH


Personal Author(s) : Kang, Young S ; Sharma, Shashi K ; Sanders, Jeffrey H ; Voevodin, Andrey A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a465552.pdf


Report Date : Nov 2006


Pagination or Media Count : 32


Abstract : Proper design of functionally gradient (FG) coatings requires a thorough understanding of layer architecture, chemistry and mechanical properties. An elastic-plastic model has been developed to study the stress distribution in multilayered FG coatings using finite element method to achieve optimum design architecture for high wear resistance and low friction. Ti1-xCx (0x1) gradient coatings with diamond like carbon (DLC) coating on 440C stainless steel substrate were assumed as a series of perfectly bonded layers with unique material properties and layer thickness. In order to model the elastic-plastic behavior of these coatings accurately, nano-indentation experiments using a nano-indenter were performed to measure material properties of each Ti1-xCx gradient coating block. Using measured material properties, the numerical elastic-plastic model was used to examine the threshold of plasticity and plastic deformation zone inside the multilayered coatings and substrate and at the multilayered interfaces.


Descriptors :   *MECHANICAL PROPERTIES , *ELASTIC PROPERTIES , *COATINGS , PLASTIC DEFORMATION , WEAR , TRIBOLOGY , WEAR RESISTANCE , GRADIENTS , FRICTION , MODELS , THRESHOLD EFFECTS , FINITE ELEMENT ANALYSIS


Subject Categories : Coatings, Colorants and Finishes
      Properties of Metals and Alloys
      Computer Programming and Software
      Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE