Influence of Dynamic Multiaxial Transverse Loading on Dyneema® SK76 Single Fiber Failure

2021 ◽  
pp. 85-92
Author(s):  
Frank David Thomas ◽  
Stephen L. Alexander ◽  
C. Allan Gunnarsson ◽  
Tusit Weerasooriya ◽  
Subramani Sockalingam
Keyword(s):  
Single Fiber ◽  
Transverse Loading ◽  
Fiber Failure

scholarly journals Failure of Dyneema® SK76 single fiber under multiaxial transverse loading

2018 ◽  
Vol 89 (13) ◽  
pp. 2659-2673
Author(s):  
Subramani Sockalingam ◽  
Frank D Thomas ◽  
Daniel Casem ◽  
John W Gillespie ◽  
Tusit Weerasooriya
Keyword(s):  
Single Fiber ◽  
Transverse Loading

Physical and Mechanical Properties of Cotton Fibers: Single-fiber Failure

2009 ◽  
Vol 80 (11) ◽  
pp. 1093-1102 ◽  
Author(s):  
O. Harzallah ◽  
H. Benzina ◽  
J-Y. Drean
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Single Fiber ◽  
Cotton Fibers ◽  
Fiber Failure

Optical Network Survivability

2008 ◽  
pp. 383-390
Author(s):  
N. S.C. Correia ◽  
M. C.R. Medeiros
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Network ◽  
Network Survivability ◽  
Single Fiber ◽  
Fiber Failure ◽  
Wavelength Division ◽  
Optical Wdm ◽  
Service Interruption ◽  
Equipment Failures ◽  
Electrical Cables

The telecommunications world is evolving dramatically toward challenging scenarios where the fast and efficient transportation of information is becoming a key element in today’s society. Wavelength division multiplexing (WDM) technology has the potential to satisfy the ever-increasing bandwidth needs of the network users on a sustained basis (Mukherjee, 2000). Network operators must provide uninterrupted service to their customers, that is, network survivability must be guaranteed. This means that, networks must be able to handle link or fiber cuts as well as equipment failures, fact that influences the design and operation of networks (Gerstel & Ramaswami, 2000). When using WDM, survivability becomes even more important because of the huge amount of traffic carried by a single fiber. A single fiber failure, even for few seconds, can be catastrophic (Maier, Pattavina, Patre & Martinelli, 2002). This issue is actually very important since the optical WDM technology is now being deployed in the field. Network survivability is not just an academic subject. In real networks, failures happen quite frequently (fiber cuts, for example, are very common in terrestrial networks since they share other utility transport conduits, such as gas or water pipes and electrical cables, and are considered the least reliable component (Gerstel & Ramaswami, 2000; Maier, Pattavina, Patre & Martinelli, 2002). The prevention of service interruption, or the reduction of the service loss when failures occur, must now be an integral part of the network design and operations strategy or otherwise severe service losses can happen.

Optical Network Survivability

2011 ◽  
pp. 376-384
Author(s):  
N. S.C. Correia
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Network ◽  
Network Survivability ◽  
Single Fiber ◽  
Fiber Failure ◽  
Wavelength Division ◽  
Optical Wdm ◽  
Service Interruption ◽  
Equipment Failures ◽  
Electrical Cables

The telecommunications world is evolving dramatically toward challenging scenarios where the fast and efficient transportation of information is becoming a key element in today’s society. Wavelength division multiplexing (WDM) technology has the potential to satisfy the ever-increasing bandwidth needs of the network users on a sustained basis (Mukherjee, 2000). Network operators must provide uninterrupted service to their customers, that is, network survivability must be guaranteed. This means that networks must be able to handle link or fiber cuts as well as equipment failures, fact that influences the design and operation of networks (Gerstel & Ramaswami, 2000). When using WDM, survivability becomes even more important because of the huge amount of traffic carried by a single fiber. A single fiber failure, even for few seconds, can be catastrophic (Maier, Pattavina, Patre, & Martinelli, 2002). This issue is actually very important since the optical WDM technology is now being deployed in the field. Network survivability is not just an academic subject. In real networks, failures happen quite frequently (fiber cuts, for example, are very common in terrestrial networks since they share other utility transport conduits such as gas or water pipes and electrical cables, and are considered the least reliable component (Gerstel et al., 2000; Maier et al., 2002). The prevention of service interruption, or the reduction of the service loss when failures occur, must now be an integral part of the network design and operations strategy or otherwise severe service losses can happen.

Strain evolution after fiber failure in a single-fiber metal matrix composite under cyclic loading

2005 ◽  
Vol 399 (1-2) ◽  
pp. 33-42 ◽  
Author(s):  
Jay C. Hanan ◽  
Sivasambu Mahesh ◽  
Ersan Üstündag ◽  
Irene J. Beyerlein ◽  
Geoffrey A. Swift ◽  
...  
Keyword(s):  
Cyclic Loading ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Single Fiber ◽  
Fiber Failure ◽  
Strain Evolution ◽  
Fiber Metal

Self-Protection Mechanism for Distribution Fiber in TWDM+OFDM PON

2013 ◽  
Vol 765-767 ◽  
pp. 2551-2554 ◽  
Author(s):  
Wu Jia ◽  
Pei Zhang ◽  
Jian Quan Wang ◽  
Xiu Fang Zhong ◽  
Jian Kang ◽  
...  
Keyword(s):  
Distribution Networks ◽  
Optical Signal ◽  
Single Fiber ◽  
Power Budget ◽  
Fiber Failure ◽  
Protection Mechanism ◽  
Fiber Bridging ◽  
Protection Mechanisms ◽  
Calculation Results ◽  
Self Protection

Two main types of TWDM PON are distinguished by the locations of AWG and splitter. Three self-protection mechanisms i.e., dual fiber bridging pair (DFBP), single fiber bridging pair (SFBP), and single fiber bridging ring (SFBR) are designed based on bridging fiber and can be directly used on TDM part of optical distribution networks (ODN). After combined with the spectral periodicity property of AWG, the three schemes can be used in WDM part too. Each ONU can use monitoring and reporting mechanisms on optical signal to detect the fiber failure. DF then can get self-protection without any service interrupt and loss. The calculation results show the proposed schemes can keep high survivability and connection availability, while the cost, recovery time and power budget are acceptable.

Polarized microbeam FT-IR analysis of single fibers

1996 ◽  
Vol 54 ◽  
pp. 206-207
Author(s):  
Liling Cho ◽  
David L. Wetzel
Keyword(s):  
Molecular Orientation ◽  
Transition Point ◽  
Polymer Fibers ◽  
Single Fiber ◽  
Wire Grid ◽  
Polyester Fibers ◽  
Ft Ir ◽  
Ir Analysis ◽  
The Relationship ◽  
Wire Grid Polarizer

Polarized infrared microscopy has been used for forensic purposes to differentiate among polymer fibers. Dichroism can be used to compare and discriminate between different polyester fibers, including those composed of polyethylene terephthalate that are frequently encountered during criminal casework. In the fiber manufacturering process, fibers are drawn to develop molecular orientation and crystallinity. Macromolecular chains are oriented with respect to the long axis of the fiber. It is desirable to determine the relationship between the molecular orientation and stretching properties. This is particularly useful on a single fiber basis. Polarized spectroscopic differences observed from a single fiber are proposed to reveal the extent of molecular orientation within that single fiber. In the work presented, we compared the dichroic ratio between unstretched and stretched polyester fibers, and the transition point between the two forms of the same fiber. These techniques were applied to different polyester fibers. A fiber stretching device was fabricated for use on the instrument (IRμs, Spectra-Tech) stage. Tension was applied with a micrometer screw until a “neck” was produced in the stretched fiber. Spectra were obtained from an area of 24×48 μm. A wire-grid polarizer was used between the source and the sample.

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