NDLI: Spherical Indentation of Nickel Thin Film on Steel-4340 Substrate

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Raghu, V. Prakash Arunkumar, S. Ramesh, Ajith
Copyright Year	2011
Abstract	In this paper, finite element simulations of spherical indentation of Nickel thin film on Steel-4340 are studied for single and multiple cycle of indentation as well. The objective was to understand the mechanics of coated systems, from load-displacement (P-h) curves, stress distribution in the film and the effect of substrate yield strength on the indentation response. The loading portion of P-h curve showed displacement bursts and the reason for this is investigated. A transition in the deformation behavior of the film from Hertz-type to flexure was observed for a normalized indentation depth of h/tf≈0.2. The influence of coating–substrate properties on P-h curve is also investigated for different h/tf ratios and yield strains. Attempts are also made to explore the possibility of understanding the creep-fatigue behavior of coated specimen subjected to cyclic indentation at room temperature from Indentation depth v/s time, Indentation depth v/s number of cycles and Plastic dissipation energy v/s number of cycles curve.
Starting Page	745
Ending Page	750
Page Count	6
File Format	PDF
ISBN	9780791854891
DOI	10.1115/IMECE2011-64664
Volume Number	Volume 3: Design and Manufacturing
Conference Proceedings	ASME 2011 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2011-11-11
Publisher Place	Denver, Colorado, USA
Access Restriction	Subscribed
Subject Keyword	Indentation response Displacement bursts Spherical indentation Thin-film Creep-fatigue Thin films Fatigue Nickel Creep Steel Displacement
Content Type	Text
Resource Type	Article

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