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Naveen Ravirala

University of Bolton

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Publication

Featured researches published by Naveen Ravirala.

Textile Research Journal | 2006

Negative Poisson’s Ratio Polyester Fibers

Naveen Ravirala; K. L. Alderson; P. J. Davies; V. R. Simkins; Andrew Alderson

Auxetic materials are referred to as those having negative Poisson’s ratio (ν). Initial work at Bolton successfully fabricated auxetic polypropylene fiber using a novel thermal melt-spinning technique. This paper reports in detail both the methods and principles involved in screening polyester powder and also the manufacturing method for successful production of auxetic polyester fibers. Videoextensometry along with micro-tensile testing were used to measure the Poisson’s ratio of the fiber. The Poisson’s ratio of the polyester fiber was found to vary between -0.65 and -0.75.

Composites Science and Technology | 2010

Elastic constants of 3-, 4- and 6-connected chiral and anti-chiral honeycombs subject to uniaxial in-plane loading

Andrew Alderson; K. L. Alderson; Daphne Attard; K. E. Evans; Ruben Gatt; Joseph N. Grima; W. Miller; Naveen Ravirala; Christopher W. Smith; K. Zied

Composites Science and Technology | 2010

The transverse elastic properties of chiral honeycombs

A Lorato; P. Innocenti; Fabrizio Scarpa; Andrew Alderson; K. L. Alderson; K. Zied; Naveen Ravirala; W. Miller; Christopher W. Smith; K. E. Evans

Materials Science and Engineering A-structural Materials Properties Microstructure and Processing | 2006

Negative Poisson's ratios in cellular foam materials

Joseph N. Grima; Ruben Gatt; Naveen Ravirala; Andrew Alderson; K. E. Evans

Procedia Engineering | 2014

Auxetic Materials for Sports Applications

Mohammad Sanami; Naveen Ravirala; K. L. Alderson; Andrew Alderson

Composites Science and Technology | 2010

The in-plane linear elastic constants and out-of-plane bending of 3-coordinated ligament and cylinder-ligament honeycombs

Andrew Alderson; K. L. Alderson; Gleny T. Chirima; Naveen Ravirala; K. Zied

Scripta Materialia | 2009

In situ three-dimensional x-ray microtomography of an auxetic foam under tension

Samuel A. McDonald; Naveen Ravirala; Philip J. Withers; Andrew Alderson

Physica Status Solidi B-basic Solid State Physics | 2012

Auxetic warp knit textile structures

K. L. Alderson; Andrew Alderson; Subhash Anand; V. R. Simkins; Shonali Nazare; Naveen Ravirala

Archive | 2007

Fabrics having knit structures exhibiting auxetic properties and garments formed thereby

Michael Starbuck; Subhash Anand; Naveen Ravirala; K. L. Alderson; Andrew Alderson

Journal of Materials Science | 2007

Interlocking hexagons model for auxetic behaviour

Naveen Ravirala; Andrew Alderson; K. L. Alderson

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Andrew Alderson

Sheffield Hallam University

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K. L. Alderson

University of Bolton

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P. J. Davies

University of Bolton

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K. E. Evans

University of Exeter

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V. R. Simkins

University of Bolton

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Joseph N. Grima

University of Malta

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Ruben Gatt

University of Malta

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Christopher W. Smith

University of Exeter

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Gleny T. Chirima

University of Bolton

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K. Zied

University of Bolton

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