scholarly journals Effects of Notch Geometry and Fiber Orientation on Fracture Characteristics of Notched FRP Plates under Static Load.

1995 ◽  
Vol 44 (499) ◽  
pp. 401-406 ◽  
Author(s):  
Hiizu HYAKUTAKE ◽  
Toshihiro YAMAMOTO
Keyword(s):  
Fiber Orientation ◽  
Static Load ◽  
Fracture Characteristics ◽  
Notch Geometry

The Effect of Notches on the Failure of Two-Dimensional Nonwoven Fiber Networks

2020 ◽  
Vol 143 (2) ◽  
Author(s):  
Yinglong Chen ◽  
Thomas Siegmund
Keyword(s):  
Fiber Orientation ◽  
Shear Failure ◽  
Fiber Material ◽  
Failure Strength ◽  
Double Edge ◽  
Unnotched Specimen ◽  
Notch Geometry ◽  
Notch Length ◽  
Nonwoven Fiber ◽  
Tearing Strength

Abstract The tearing response of sheets of nonwoven fiber material is investigated. It addresses the question on how notch length and notch geometry is related to the tearing strength and tearing processes. The system considered consists of elastic-brittle fibers connected by strong interfiber bonds. Fiber fracture is the only failure mechanism. For a random fiber orientation case, deformation of the unnotched specimen occurs by long-range fiber chains connecting the load inducing boundaries, and failure is by tearing the cross section. The strength of the notched random fiber sheets is well described by a net section criterion, independent of the notch geometry. For a fiber orientation with symmetry relative to the loading direction, tensile loading is transferred by formation of the X-shaped fiber chains centered in the specimen. The subsequent failure occurs along the fiber chain by shear. Thus, the tearing strength is independent of the notch depth in double-edge notched and single-edge notched specimens, when the presence of shallow notch does not disrupt the force chains in the model. As the notch disturbs the fiber chains, alternative shear failure path forms near the notch tip, leading to a dependence of failure strength on the notch geometry. Then, the failure strength of notched nonwoven networks is described by a shear strength and a notch geometry term.

Electron Microscopy of Metal-Matrix Composites

1970 ◽  
Vol 28 ◽  
pp. 404-405
Author(s):  
A. Lawley ◽  
M. R. Pinnel ◽  
A. Pattnaik
Keyword(s):  
Electron Microscopy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Critical Evaluation ◽  
Elastic Behavior ◽  
Matrix Composites ◽  
Directionally Solidified ◽  
Fracture Characteristics ◽  
Broad Program

As part of a broad program on composite materials, the role of the interface on the micromechanics of deformation of metal-matrix composites is being studied. The approach is to correlate elastic behavior, micro and macroyielding, flow, and fracture behavior with associated structural detail (dislocation substructure, fracture characteristics) and stress-state. This provides an understanding of the mode of deformation from an atomistic viewpoint; a critical evaluation can then be made of existing models of composite behavior based on continuum mechanics. This paper covers the electron microscopy (transmission, fractography, scanning microscopy) of two distinct forms of composite material: conventional fiber-reinforced (aluminum-stainless steel) and directionally solidified eutectic alloys (aluminum-copper). In the former, the interface is in the form of a compound and/or solid solution whereas in directionally solidified alloys, the interface consists of a precise crystallographic boundary between the two constituents of the eutectic.

A photoelastic clinical study of the static load distributionat the stump/socket interface of PTB sockets

2005 ◽  
Vol 29 (3) ◽  
pp. 291-302 ◽  
Author(s):  
P. Sewell ◽  
J. Vinney ◽  
S. Noroozi ◽  
R. Amali ◽  
S. Andrews
Keyword(s):  
Clinical Study ◽  
Static Load ◽  
Socket Interface

Validation of SST 300 bearing casing for SST 200 bearing casing in static load condition

2011 ◽  
Vol 3 (7) ◽  
pp. 277-278
Author(s):  
Jinesh Shah ◽  
◽  
Mohammad Azim Aijaz ◽  
Pratik Kikani ◽  
Sagarkumar Shah ◽  
...  
Keyword(s):  
Static Load ◽  
Load Condition
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