scholarly journals Wave Propagation Characteristics of Fiber-Reinforced Composite Materials with Interface Debonding, I. Scattering of Plane Wave by an Elastic Fiber with Partially Debonded Interface. Boundary Element Analysis for Shear Wave Polarized Parallel with Fiber.

1997 ◽  
Vol 46 (11) ◽  
pp. 1312-1318 ◽  
Author(s):  
Shiro BIWA ◽  
Harunori MIYAMURA ◽  
Toshinobu SHIBATA
Keyword(s):  
Wave Propagation ◽  
Elastic Fiber ◽  
Interface Debonding ◽  
Propagation Characteristics ◽  
Interface Boundary ◽  
Element Analysis ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite ◽  
Debonded Interface ◽  
Boundary Element Analysis

On the Properties of Anisotropic Piezoelectric and Fiber Reinforced Composite Materials

2006 ◽  
Author(s):  
Mohamed Gaith ◽  
Cevdet Akgoz
Keyword(s):  
Composite Materials ◽  
Elastic Fiber ◽  
Physical Property ◽  
Ceramic Materials ◽  
Fiber Reinforced ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite ◽  
Semiconductor Compounds ◽  
Degree Of Anisotropy ◽  
Tensor Basis

A new procedure based on constructing orthonormal tensor basis using the form-invariant expressions which can easily be extended to any tensor of rank n. A new decomposition, which is not in literature, of the stress tensor is presented. An innovational general form and more explicit physical property of the symmetric fourth rank elastic tensors is presented. The new method allows to measure the stiffness and piezoelectricity in the elastic fiber reinforced composite and piezoelectric ceramic materials, respecively, using a proposed norm concept on the crystal scale. This method will allow to investigate the effects of fiber orientaion, number of plies, material properties of matrix and fibers, and degree of anisotropy on the stiffness of the structure. The results are compared with those available in the literature for semiconductor compounds, piezoelectric ceramics and fiber reinforced composite materials.

scholarly journals Root Canal Filling: Fracture Strength of Fiber-Reinforced Composite-Restored Roots and Finite Element Analysis

2013 ◽  
Vol 24 (6) ◽  
pp. 619-625 ◽  
Author(s):  
Marilia Pivetta Rippe ◽  
Manuela Favarin Santini ◽  
Carlos Alexandre Souza Bier ◽  
Alexandre Luiz Souto Borges ◽  
Luiz Felipe Valandro
Keyword(s):  
Finite Element Analysis ◽  
Fracture Strength ◽  
Root Canal ◽  
Hybrid Technique ◽  
Root Canal Filling ◽  
Element Analysis ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite ◽  
Single Cone ◽  
One Way Anova

The aims of this study were to evaluate the effect of root canal filling techniques on root fracture resistance and to analyze, by finite element analysis (FEA), the expansion of the endodontic sealer in two different root canal techniques. Thirty single-rooted human teeth were instrumented with rotary files to a standardized working length of 14 mm. The specimens were embedded in acrylic resin using plastic cylinders as molds, and allocated into 3 groups (n=10): G(lateral) - lateral condensation; G(single-cone) - single cone; G(tagger) - Tagger's hybrid technique. The root canals were prepared to a length of 11 mm with the #3 preparation bur of a tapered glass fiber-reinforced composite post system. All roots received glass fiber posts, which were adhesively cemented and a composite resin core was built. All groups were subjected to a fracture strength test (1 mm/min, 45°). Data were analyzed statistically by one-way ANOVA with a significance level of 5%. FEA was performed using two models: one simulated lateral condensation and Tagger's hybrid technique, and the other one simulated the single-cone technique. The second model was designed with an amount of gutta-percha two times smaller and a sealer layer two times thicker than the first model. The results were analyzed using von Mises stress criteria. One-way ANOVA indicated that the root canal filling technique affected the fracture strength (p=0.004). The G(lateral) and G(tagger) produced similar fracture strength values, while G(single-cone) showed the lowest values. The FEA showed that the single-cone model generated higher stress in the root canal walls. Sealer thickness seems to influence the fracture strength of restored endodontically treated teeth.

Finite Element Analysis of Seismic Wave Propagation Characteristics in Fuzhou Basin

2009 ◽  
Vol 52 (3) ◽  
pp. 604-614 ◽  
Author(s):  
Huai ZHANG ◽  
Yuan-Ze ZHOU ◽  
Zhong-Liang WU ◽  
Zhen-Zhen YAN ◽  
Shi CHEN ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Wave Propagation ◽  
Seismic Wave ◽  
Seismic Wave Propagation ◽  
Propagation Characteristics ◽  
Element Analysis
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