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Fibers, Volume 8, Issue 12

2020 December - 6 articles

Cover Story: This figure shows a comparison between the trend of the sound absorption coefficient as a function of frequency between measurements carried out with the impedance tube and simulations carried out with the model based on artificial neural networks. We can see that the simulated curves fit those returned by measurements with the impedance tube. The typical bell curve characteristic of porous materials is confirmed; moreover, for each configuration of the specimen, a trend of the sound absorption coefficient is confirmed which is distributed selectively around the resonant frequency of the resonator. View this paper.
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Articles (6)

  • Article
  • Open Access
24 Citations
4,348 Views
16 Pages

18 December 2020

This work reports the results of experimental measurements of the sound absorption coefficient of ceramic materials using the principle of acoustic resonators. Subsequently, the values obtained from the measurements were used to train a simulation mo...

  • Article
  • Open Access
4 Citations
3,735 Views
8 Pages

Optical Characterisations of Bi-Phosphosilicate Fiber for O Band Amplification

  • Amilia Mansoor,
  • Nasr Y. M. Omar,
  • Katrina D. Dambul,
  • Hairul Azhar Abdul-Rashid and
  • Zulfadzli Yusoff

9 December 2020

We report on the optical properties of Bi-doped phosphosilicate fiber. The fiber with a core and a clad diameter of 7.75 µm and 125 µm, respectively, is fabricated in-house using the modified chemical vapor deposition (MCVD) with in-situ...

  • Article
  • Open Access
1 Citations
4,037 Views
23 Pages

7 December 2020

The flow through porous metallic-cloth fibers influences the cloth seal leakage performance. Measuring the actual seal leakage proves difficult with challenging turbine operating conditions. A non-Darcian porous medium Computational Fluid Dynamics (C...

  • Article
  • Open Access
84 Citations
5,558 Views
14 Pages

Experimental Tests and Reliability Analysis of the Cracking Impact Resistance of UHPFRC

  • Hussain A. Jabir,
  • Sallal R. Abid,
  • Gunasekaran Murali,
  • Sajjad H. Ali,
  • Sergey Klyuev,
  • Roman Fediuk,
  • Nikolai Vatin,
  • Vladimir Promakhov and
  • Yuriy Vasilev

4 December 2020

Ultra-high performance (UHP) concrete is a special type of fibrous cementitious composite that is characterized by high strength and superior ductility, toughness, and durability. This research aimed to investigate the resistance of ultra-high perfor...

  • Article
  • Open Access
5 Citations
4,501 Views
14 Pages

1 December 2020

This paper aims to optimize the liquid repellency performance of fluorochemical urethane (FU)—a patented technology with a shorter fluorocarbon chain (C4). FU is free from persistent bioaccumulative toxins such as perfluorooctanoic acid (PFOA)...

  • Article
  • Open Access
53 Citations
8,304 Views
19 Pages

Acetylation Treatment for the Batch Processing of Natural Fibers: Effects on Constituents, Tensile Properties and Surface Morphology of Selected Plant Stem Fibers

  • Isiaka Oluwole Oladele,
  • Omokafe Seun Michael,
  • Adeolu Adesoji Adediran,
  • Oluwayomi Peter Balogun and
  • Folorunso Ojo Ajagbe

1 December 2020

This work was on the comparative evaluation of the property effects obtainable when acetylation is applied to parts of selected agro fibers that are obtainable within common localities. The fibers were subjected to different concentrations of acetyla...

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Fibers - ISSN 2079-6439