Title: A finite element simulation of the stress intensity factors in a plate with pre-cracked edge before and after coatings subjected to thermal loading
Authors: Dipak Kumar; K.N. Pandey
Addresses: Department of Mechanical Engineering, Motilal Nehru National Institute of Technology (MNNIT) Allahabad, Allahabad-211004, U.P., India ' Department of Mechanical Engineering, Motilal Nehru National Institute of Technology (MNNIT) Allahabad, Allahabad-211004, U.P., India
Abstract: In the presented paper, first of all a finite element analysis has been done on an uncoated stainless steel AISI 304L plate having a pre-existing crack exposed to a convective medium of cyclic temperature variation. Thereafter, stainless steel AISI 304L plate having a pre-existing crack and exposed to a convective medium of cyclic temperature varied stresses induced thermal stress intensity factor with the thermal barrier coating was studied. Results show that the temperature is reduced by 41.74% with the application of TBC; obtained stress intensity factor amplitude value is reduced by 55.39% with top coat thickness 1 mm.
Keywords: finite element analysis; FEA; thermal loading; stress intensity factor; SIF; thermal barrier coatings; TBCs; simulation; stainless steel plates; pre-cracked edges; edge cracking; cracks; temperature variation.
International Journal of Computational Materials Science and Surface Engineering, 2015 Vol.6 No.2, pp.75 - 96
Received: 01 Aug 2013
Accepted: 04 Sep 2014
Published online: 09 Sep 2015 *