Fracture analysis on an arc-shaped interfacial crack between a superconducting cylinder and its functionally graded coating with transport currents

2018 ◽  
Vol 185 ◽  
pp. 338-347 ◽  
Author(s):  
W.J. Feng ◽  
Z. Yan
Keyword(s):  
Interfacial Crack ◽  
Fracture Analysis ◽  
Functionally Graded ◽  
Functionally Graded Coating ◽  
Superconducting Cylinder ◽  
Graded Coating

Anti-Plane Interfacial Crack with Functionally Graded Coating

2016 ◽  
Vol 713 ◽  
pp. 179-182
Author(s):  
Y.L. Tian ◽  
M. Li ◽  
Pi Hua Wen
Keyword(s):  
Interfacial Crack ◽  
Functionally Graded ◽  
Displacement Discontinuity ◽  
Displacement Discontinuity Method ◽  
Intensity Factors ◽  
Functionally Graded Coating ◽  
Graded Coating ◽  
Graded Material ◽  
Plane Displacement ◽  
Static Shear

The anti-plane displacement discontinuity method is applied to establish the Fredholm integral equation of the first kind for the orthotropic Functionally Graded Material (FGM) coatings subjected to static shear load. The Young's modulus is assumed to vary exponentially through the thickness while the Poisson's ratio is constant. The fundamental solution of anti-plane displacement discontinuity are derived for orthotropic FGM coating with isotropic substrate. The stress intensity factors are obtained directly from the coefficients of the Chebyshev polynomials.

scholarly journals Anti-plane interfacial crack with functionally graded coating: static and dynamic

2016 ◽  
Vol 86 ◽  
pp. 250-259 ◽  
Author(s):  
M. Li ◽  
Y.L. Tian ◽  
P.H. Wen ◽  
M.H. Aliabadi
Keyword(s):  
Interfacial Crack ◽  
Functionally Graded ◽  
Functionally Graded Coating ◽  
Graded Coating

Development of Functionally Graded Coating by Thermal Spray Deposition

2015 ◽  
pp. 121-162
Author(s):  
Jyotsna Dutta Majumdar ◽  
Indranil Manna
Keyword(s):  
Thermal Spray ◽  
Spray Deposition ◽  
Thermal Spraying ◽  
Chemical Vapor ◽  
Solid Substrate ◽  
Functionally Graded ◽  
Functionally Graded Coating ◽  
Energy Applications ◽  
Graded Coating ◽  
Gradient Coatings

Functionally Gradient Coatings (FGCs) are emerging materials with an improved service life and have a promising future for the production of (a) tailored components for applications subjected to large thermal gradients, (b) smart coating with improved corrosion and wear resistance, (c) improved fatigue wear, and (d) improved material structures for energy applications like batteries, fuel cells, etc. FGCs may be developed by physical/chemical vapor deposition, electro/electroless deposition, thermal spray deposition technique, etc. Thermal spraying refers to the technique or a group of techniques whereby molten or semi-molten droplets of materials are sprayed onto a solid substrate to develop the coating. In this chapter, detailed overviews of the development of functionally graded coating by thermal spray deposition techniques are presented. In addition, a few research results on the development of functionally graded coating for tribological and thermal barrier applications are presented.

Analysis on Functionally Graded Material Coating Interface Crack

2012 ◽  
Vol 602-604 ◽  
pp. 1596-1599
Author(s):  
Bo He ◽  
Chang Qing Sun
Keyword(s):  
Elastic Modulus ◽  
Stress Intensity ◽  
Intensity Factor ◽  
Interface Crack ◽  
Functionally Graded ◽  
Physical Parameters ◽  
Mode I ◽  
Modulus Ratio ◽  
Functionally Graded Coating ◽  
Graded Coating

It is assumed that the physical parameters of functionally graded coating material accords with the variation of degree n polynomial, and based on this material model, the behavior of crack fracture on the interface of functionally graded coating is studied. The results show that when the functionally graded coating structure bears a tension load, stress intensity factors of mode I and mode II exist at the same time generally, and the intensity factor of mode I occupies a leading position all along. Besides, when the elastic modulus ratio of the base to the functionally graded coating top is 5 and the elastic modulus of functionally graded coating varies linearly, the stress intensity factor of interface crack is the smallest, and with the increasing of elastic modulus ratio, the optimal non-uniform parameter tends to be larger than 1.

Sign in / Sign up

Export Citation Format

Share Document