Functional warp-knitted fabrics with integrated superelastic niti filaments

Janouchová, Kateřina; Heller, Luděk; Vysanska, Monika

doi:10.2478/v10304-012-0007-7

Cited by 5 publications

(4 citation statements)

References 6 publications

(7 reference statements)

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“…The switching time between multiple let-off amounts is accurately measured in this experiment using LMS test. Lab software, the speed signal of the spindle motor and warp motor, and tension sensor signal are transmitted to the two speed interfaces and the acceleration interfaces [13]. The sampling period and sampling frequency are appropriately selected to accurately determine the switching time between varied let-off amounts [14].…”

Section: Methodsmentioning

confidence: 99%

Changeover Process Assessment of Warp-Knitting Let-Off Equipped with Multispeed Electronic Let-Off System

Jiang

Tang

2020

Autex Research Journal

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AbstractWarp-knitted fabrics have gained increasing attention due to their excellent properties, and their production is strongly dependent on the warp-based electronic let-off system. Most of the existing control systems are single speed electron let-off structure, which brings a series of issues such as broken yarn, missed needle, and running thread caused by let-off delay, making it hard for manufacturer to produce the required fabrics. To fill the gap, this article proposes a new framework of a multispeed electronic let-off system for warp knitting based on closed-loop control strategy. As a demonstration of the capacity and generalizability of this newly proposed methodology, the 01-type four-channel acoustic vibration analyzer is used to test and analyze the time of switching, the let-off amounts, and the change in warp tension during the process of switching let-off amounts, including the explanation and comparison of difference values of let-off quantities. It is shown that the proposed method for the production of warp-knitted fabrics is a useful method for achieving digital manufacture of warp-knitted fabrics.

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Section: Methodsmentioning

confidence: 99%

Changeover Process Assessment of Warp-Knitting Let-Off Equipped with Multispeed Electronic Let-Off System

Jiang

Tang

2020

Autex Research Journal

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“…Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. stockings and bandages [6,7], more flexible and adaptable bra bones for underwire bras, seatbelts that increase the wearer's safety in car crashes [8], improved cushioning pads [9], etc. For the most part, shape-memory garments with nitinol incorporated into woven or knitted fabrics facilitate shape recovery through human body heat or heat during ironing.…”

Section: Introductionmentioning

confidence: 99%

A NiTi alloy weft knitted fabric for smart firefighting clothing

Lah

Fajfar

Kugler

et al. 2019

Smart Mater. Struct.

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A prototype of a new shape-memory nitinol knitted fabric intended for use as an active thermal insulating interlining in firefighting protective clothing was developed in the study presented in this paper. Weft knitted fabrics were made from commercially available cold-worked nickel titanium alloy monofils. Knits were made on a manual knitting machine from a monofil measuring 0.1 mm in diameter, while a hand-made knit was prepared from a monofil measuring 0.2 mm in diameter. Nitinol fabrics were annealed at 500 °C to achieve an austenite transition temperature of 75 °C. A special constructed mould made of a steel frame and aluminium domes measuring 30 and 20 mm in height was used to give the nitinol fabrics a new temporary shape. A two-way, shape-memory effect of the nitinol fabrics was achieved using a 15-cycle training process. The achieved shape-memory effect was tested in a heated chamber at 100 °C, where bulges measuring 12–25 mm in height occurred. NiTi knits made from finer monofil were the most successful shape-memory knits. They were machine knitted and achieved sufficiently high bulges, measuring 18 or 12 mm, that facilitated large enough air gaps for effective thermal protection. A smart textile system was prepared by inserting the trained nitinol fabric into a pocket made from two textile fabric layers sewn together. When it was exposed to environmental temperatures of 75 °C and higher, it instantly changed its form from a two-dimensional shape to a three-dimensional shape, while increasing the air gap in the pocket. A quilted fabric made from such a smart textile system could be used in firefighting protective clothing to locally improve thermal insulation and protect the human skin from overheating or burns.

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“…In some of the published studies, the compression behaviors of composites reinforced by knitted spacer fabrics have been examined [3][4][5][6][7]. These composites were produced based on an unsaturated resin.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study Of The Compression Properties Of Polyurethane-Based Warp-Knitted Spacer Fabric Composites

Chen

Zhang

Chen

et al. 2017

Autex Research Journal

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The present work has reported the compression properties of polyurethane-based warp-knitted spacer fabric composites (PWSF). In order to investigate the effect of structural parameters of fabric on the compression performance of composites, a series of warp-knitted spacer fabrics (WSF) with different structural parameters including spacer yarn inclination angle, thickness, fineness of spacer yarns, and outer layer structure have been involved. The produced composites have been characterized for compression properties. The energy-absorption performance during the compression process has been determined as a function of the efficiency and the compression stress obtained from compression tests. The results show that the composites based on spacer fabrics having smaller spacer yarns inclination angle, higher fabric thickness, finer spacer yarn, and larger mesh in outer layers perform better with respect to energy-absorption properties at lower stress level, whereas at higher stress level, the best energy-absorption abilities are obtained in case of spacer fabrics constructed of larger spacer yarn inclination angle, lower fabric thickness, coarser spacer yarn, and smaller mesh in surface layers.

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Functional warp-knitted fabrics with integrated superelastic niti filaments

Cited by 5 publications

References 6 publications

Changeover Process Assessment of Warp-Knitting Let-Off Equipped with Multispeed Electronic Let-Off System

Changeover Process Assessment of Warp-Knitting Let-Off Equipped with Multispeed Electronic Let-Off System

A NiTi alloy weft knitted fabric for smart firefighting clothing

An Experimental Study Of The Compression Properties Of Polyurethane-Based Warp-Knitted Spacer Fabric Composites

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