Influence of imperfectly bonded piezoelectric layer with irregularity on propagation of Love-type wave in a reinforced composite structure

2017 ◽  
Vol 62 (3) ◽  
pp. 325-344 ◽  
Author(s):  
Abhishek Kumar Singh ◽  
Mriganka Shekhar Chaki ◽  
Bristi Hazra ◽  
Shruti Mahto
Keyword(s):  
Composite Structure ◽  
Piezoelectric Layer ◽  
Type Wave ◽  
Reinforced Composite

scholarly journals Frequency characteristics of a GPL-reinforced composite microdisk coupled with a piezoelectric layer

2020 ◽  
Vol 135 (2) ◽  
Author(s):  
Erfan Shamsaddini lori ◽  
Farzad Ebrahimi ◽  
Eris Elianddy Bin Supeni ◽  
Mostafa Habibi ◽  
Hamed Safarpour
Keyword(s):  
Piezoelectric Layer ◽  
Frequency Characteristics ◽  
Reinforced Composite

A Fibril-Network-Reinforced Biphasic Model of Cartilage in Unconfined Compression

1999 ◽  
Vol 121 (3) ◽  
pp. 340-347 ◽  
Author(s):  
J. Soulhat ◽  
M. D. Buschmann ◽  
A. Shirazi-Adl
Keyword(s):  
Stress Relaxation ◽  
Composite Structure ◽  
Solid Phase ◽  
Constitutive Law ◽  
Published Data ◽  
Hydraulic Permeability ◽  
Unconfined Compression ◽  
Model Calculations ◽  
Biphasic Model ◽  
Reinforced Composite

Cartilage mechanical function relies on a composite structure of a collagen fibrillar network entrapping a proteoglycan matrix. Previous biphasic or poroelastic models of this tissue, which have approximated its composite structure using a homogeneous solid phase, have experienced difficulties in describing measured material responses. Progress to date in resolving these difficulties has demonstrated that a constitutive law that is successful for one test geometry (confined compression) is not necessarily successful for another (unconfined compression). In this study, we hypothesize that an alternative fibril-reinforced composite biphasic representation of cartilage can predict measured material responses and explore this hypothesis by developing and solving analytically a fibril-reinforced biphasic model for the case of uniaxial unconfined compression with frictionless compressing platens. The fibrils were considered to provide stiffness in tension only. The lateral stiffening provided by the fibril network dramatically increased the frequency dependence of disk rigidity in dynamic sinusoidal compression and the magnitude of the stress relaxation transient, in qualitative agreement with previously published data. Fitting newly obtained experimental stress relaxation data to the composite model allowed extraction of mechanical parameters from these tests, such as the rigidity of the fibril network, in addition to the elastic constants and the hydraulic permeability of the remaining matrix. Model calculations further highlight a potentially important difference between homogeneous and fibril-reinforced composite models. In the latter type of model, the stresses carried by different constituents can be dissimilar, even in sign (compression versus tension) even though strains can be identical. Such behavior, resulting only from a structurally physiological description, could have consequences in the efforts to understand the mechanical signals that determine cellular and extracellular biological responses to mechanical loads in cartilage.

scholarly journals Impact behaviour of a novel composite structure made of a polymer reinforced composite with a 3D printed metallic coating

2020 ◽  
Vol 245 ◽  
pp. 112346 ◽  
Author(s):  
I. Papa ◽  
P. Russo ◽  
A. Astarita ◽  
A. Viscusi ◽  
A.S. Perna ◽  
...  
Keyword(s):  
Composite Structure ◽  
Metallic Coating ◽  
Impact Behaviour ◽  
Reinforced Composite ◽  
3D Printed
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