نتایج جستجو برای: woven fibers

تعداد نتایج: 75010  

2010
Hua Long Mahmood Ahmed Paul Ackermann André Stark Jian Li

BACKGROUND AND PURPOSE Autonomic neuropeptide Y (NPY) is involved in local bone remodeling via the central nervous system. However, the role of peripheral neuronal NPY in fracture healing is not known. We investigated the relationship between bone healing and side-specific occurrence of NPY in angular and straight fractures. METHODS Tibial fractures in Sprague-Dawley rats were fixed with intr...

2015
Hakan Özdemir Ahmet Özkurt

In this paper, stainless steel core yarn was selected as a conductive yarn to produce conductive fabrics. The electromagnetic shielding effectiveness of twill and some diced woven fabrics with different metal densities were measured by free space measurement technique at horizontal polarization of the antenna. It was found that woven fabric samples shielded well in high frequency band, namely i...

2017
Douglas J. Beussman

Fibers are often found at crime scenes and current methods can determine the chemical composition and color of the fiber as well as physical characteristics. Unless the fiber contains DNA, there is no way to compare a fiber found at a crime scene with fibers found in a suspect’s possession. This study aims to determine if isotope ratio mass spectrometry (IRMS) can be used to add an additional l...

Journal: :Engineering Fracture Mechanics 2022

The understanding of fracture mechanisms and the assessment toughness are key factors to design high-performance composite structures be used in aeronautics. Thus, this work addresses influence initial notch orientation on translaminar woven-ply hybrid fibers reinforced thermoplastic polyether ether ketone (PEEK) laminates. Single-edge-notch bending (SENB) specimens is experimentally characteri...

2006
J. P. Feser A. K. Prasad S. G. Advani

Recent studies indicate that PEM fuel cell performance may be strongly influenced by in-plane permeability of the gas diffusion layer (GDL). The urrent study employs a radial flow technique for obtaining in-plane permeability of GDLs, using either gas or liquid as the impregnating fluid. A odel has been developed and experimentally verified to account for compressibility effects when permeabili...

2003
Ahmet H. Aydilek Tuncer B. Edil

Filtration performance of woven geotextiles is strongly related to their pore structure parameters, i.e., percent open area (POA) and pore-opening size distribution (PSD). Current methods of determination of pore structure parameters contain inherent disadvantages, whereas image analysis, taking advantage of the two-dimensional structure of woven geotextiles, can be used effectively for this pu...

2014
H. Ahmad P. A. Smith

The present paper is concerned with modelling damage and fracture in notched woven fabric composites. Previous experimental work has shown that damage at a notch in a variety of GFRP and CFRP composites based on woven fabric reinforcement comprises matrix damage and fibre tow fracture along the plane of maximum stress. It is these experimental observations that inform the failure modelling deve...

Journal: :Frontiers in Materials 2021

In this study an attempt was made to explore the possibility of substituting 3D E-glass fabric with eco-friendly basalt along modification resin using MWCNTs, a material system about which very limited information exists. The involved comparing mechanical properties two sets composites. first set comprised orthogonally woven E-glass-reinforced epoxy composites, basalt-reinforced and hybrid wove...

2002
Karen K. Leonas Wei Huang D. V. Parikh T. A. Calamari A.P.S. Sawhney N. D. Sachinvala W. R. Goynes Bhupender S. Gupta Hyun Suk Whang Weiqin Ye Roy M. Broughton Randall R. Bresee Rob Johnson Michael Jacobsen

The physical characteristics and performance attributes of absorbent gauze and spunlaced nonwovens used formedical/surgical applications are reviewed. Because the manufacturing lines for spunlacing are versatile and highlyproductive, nonwoven products from this process are highly engineered and may have superior performancecharacteristics relative to gauze products. Dressings ma...

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