scholarly journals A Sketch-Based Interface for Modeling Myocardial Fiber Orientation that Considers the Layered Structure of the Ventricles

2008 ◽  
Vol 58 (7) ◽  
pp. 487-492 ◽  
Author(s):  
Kenshi Takayama ◽  
Takashi Ashihara ◽  
Takashi Ijiri ◽  
Takeo Igarashi ◽  
Ryo Haraguchi ◽  
...  
Keyword(s):  
Layered Structure ◽  
Fiber Orientation ◽  
Myocardial Fiber

Development of the layered structure in a double-gated glass fiber-reinforced polypropylene injection molding: Experimental and simulated results

2018 ◽  
Vol 37 (14) ◽  
pp. 945-959 ◽  
Author(s):  
MC Quintana ◽  
MP Frontini
Keyword(s):  
Glass Fiber ◽  
Layered Structure ◽  
Fiber Orientation ◽  
Flow Direction ◽  
Weld Line ◽  
Orientation Distribution ◽  
Simulation Software ◽  
Distribution Data ◽  
Melt Temperature ◽  
Fiber Orientation Distribution

The present study aims to experimentally validate numerical simulation of fiber orientation distribution performed by molding simulation software Moldex3D in a double-gated injection-molded glass fiber-filled (40 wt%) polypropylene box, by making a detailed comparison of predicted and experimentally measured fiber orientation distribution data. The modeling approach evaluated in this work consists in the implementation of the Folgar–Tucker rotary diffusion model with the invariant-based optimal fitting closure approximation for the fourth-order orientation tensor. The specimen used has a weld line in the center and sharp corners. This investigation characterizes in detail the development of the through-thickness layered structure at distinctive locations of the specimen. The sensitivity of fiber orientation distribution and the layered structure to changes upon injection time and melt temperature is also evaluated. The boxes display the typical layered laminate structure, with fibers aligned in the main flow direction near the walls (shell layer) and less oriented in the middle plane (core layer). The boxes injected at the lowest melt temperature display an additional skin layer. Unfortunately, simulation fails in predicting the five layers structure developed under these latter conditions. The grade of fiber orientation is deemed to be independent of process parameters but not the layered structure.

scholarly journals A rule‐based method to model myocardial fiber orientation in cardiac biventricular geometries with outflow tracts

2019 ◽  
Vol 35 (4) ◽  
pp. e3185 ◽  
Author(s):  
Ruben Doste ◽  
David Soto‐Iglesias ◽  
Gabriel Bernardino ◽  
Alejandro Alcaine ◽  
Rafael Sebastian ◽  
...  
Keyword(s):  
Fiber Orientation ◽  
Myocardial Fiber ◽  
Rule Based

Dependence of local left ventricular wall mechanics on myocardial fiber orientation: A model study

1992 ◽  
Vol 25 (10) ◽  
pp. 1129-1140 ◽  
Author(s):  
P.H.M. Bovendeerd ◽  
T. Arts ◽  
J.M. Huyghe ◽  
D.H. van Campen ◽  
R.S. Reneman
Keyword(s):  
Fiber Orientation ◽  
Left Ventricular ◽  
Left Ventricular Wall ◽  
Ventricular Wall ◽  
Myocardial Fiber ◽  
Model Study

Mapping Myocardial Fiber Orientation Using Echocardiography-Based Shear Wave Imaging

2012 ◽  
Vol 31 (3) ◽  
pp. 554-562 ◽  
Author(s):  
Wei-Ning Lee ◽  
M. Pernot ◽  
M. Couade ◽  
E. Messas ◽  
P. Bruneval ◽  
...  
Keyword(s):  
Shear Wave ◽  
Fiber Orientation ◽  
Myocardial Fiber ◽  
Shear Wave Imaging ◽  
Wave Imaging

scholarly journals A Novel Rule-Based Algorithm for Assigning Myocardial Fiber Orientation to Computational Heart Models

2012 ◽  
Vol 40 (10) ◽  
pp. 2243-2254 ◽  
Author(s):  
J. D. Bayer ◽  
R. C. Blake ◽  
G. Plank ◽  
N. A. Trayanova
Keyword(s):  
Fiber Orientation ◽  
Myocardial Fiber ◽  
Rule Based
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