THE SCATTERING OF SH WAVE ON THE ARRAY OF PERIODIC CRACKS IN A PIEZOELECTRIC SUBSTRATE BONDED A HALF-PLANE OF FUNCTIONALLY GRADED MATERIALS

2013 ◽  
pp. 19-33
Author(s):  
JUNQIAO LIU ◽  
XING LI ◽  
JUNQIAO LIU ◽  
SHUZHUAN DONG ◽  
XIYAN YAO ◽  
...  
Keyword(s):  
Functionally Graded Materials ◽  
Half Plane ◽  
Functionally Graded ◽  
Sh Wave ◽  
Graded Materials ◽  
Periodic Cracks ◽  
Piezoelectric Substrate

The Study of SH Wave Propagation Behavior in Functionally Graded Plates with Variant Material Components

2011 ◽  
Vol 271-273 ◽  
pp. 663-668
Author(s):  
Hong Mei Cheng ◽  
Chao Feng Ge
Keyword(s):  
Wave Propagation ◽  
Phase Velocity ◽  
Group Velocity ◽  
Functionally Graded Materials ◽  
Great Influence ◽  
Functionally Graded ◽  
Inversion Method ◽  
Sh Wave ◽  
Graded Materials ◽  
Propagation Behavior

SH wave propagation behavior in functionally graded materials plates with variant material components was studied by positive series method. The dispersion curves of phase velocity and group velocity of functionally graded materials plates with stress-free surfaces are obtained and compared with those of homogeneous plate. The conclusions show that variant material components have a great influence to the disperse curves of phase velocity and group velocity. There is great significance of these results for ultrasonic nondestructive testing technique and inversion method of material parameters.

On the Receding Contact Between a Homogeneous Elastic Layer and a Half-plane Substrate Coated with Functionally Graded Materials

2019 ◽  
Vol 17 (01) ◽  
pp. 1844008 ◽  
Author(s):  
Jie Yan ◽  
Changwen Mi
Keyword(s):  
Integral Equations ◽  
Functionally Graded Materials ◽  
Half Plane ◽  
Elastic Layer ◽  
Mixed Boundary ◽  
Functionally Graded ◽  
Dual Integral Equations ◽  
Engineering Structures ◽  
Graded Materials ◽  
Receding Contact

Mechanical contact threatens the integrity of engineering structures. In particular, receding contact is one of the primary causes that are responsible for the delamination of multilayered elastic structures. This paper aims to analyze the receding contact between a homogeneous elastic layer and a half-plane reinforced by a functionally graded coating. The multilayered structure is indented by a rigid stamp of convex profile. Governing equations and mixed boundary conditions of the double contact problem are converted into a pair of singular integral equations by Fourier integral transforms. The dual integral equations are numerically solved by Gauss–Chebyshev quadrature for the contact pressure and contact length at both interfaces of contact. Taking a circular punch as a case study, the developed algorithm is first validated against classical models available in the literature. Extensive parametric studies are subsequently performed to illustrate the effects of indentation load, geometry and material properties of individual components. Numerical results suggest the possibility of optimizing multilayered structures by the introduction of functionally graded materials (FGMs) as coatings or transitional layers.

Dynamic Analysis with Stress Recovery for Functionally Graded Materials: Numerical Simulation and Experimental Benchmarking

2014 ◽  
Vol 2 (1) ◽  
pp. 21
Author(s):  
Carlos Alberto Dutra Fraga Filho ◽  
Fernando César Meira Menandro ◽  
Rivânia Hermógenes Paulino de Romero ◽  
Juan Sérgio Romero Saenz
Keyword(s):  
Numerical Simulation ◽  
Dynamic Analysis ◽  
Functionally Graded Materials ◽  
Functionally Graded ◽  
Stress Recovery ◽  
Graded Materials
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