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1 – 10 of over 1000
Article
Publication date: 9 November 2010

A.E. Richardson, K. Coventry and S. Landless

Establishing toughness performance in concrete using steel fibres is well understood, and design guides are available to assist with this process. What is less readily…

Abstract

Purpose

Establishing toughness performance in concrete using steel fibres is well understood, and design guides are available to assist with this process. What is less readily understood is the use of Type 2 synthetic fibres to provide toughness. This problem is exacerbated by the wide range of synthetic fibres available, with each different fibre providing different structural properties. This paper seeks to address this issue.

Design/methodology/approach

The paper examines the relative pull‐out values of two single fibre types, i.e. steel and Type 2 synthetic fibres. The pull‐out test results have informed the doses of fibre additions to beams which have been used to equate near equal toughness performance for each fibre type.

Findings

The results show that synthetic Type 2 fibres, when used at a prescribed additional volume, can provide toughness equal to steel fibre concrete.

Originality/value

The scientific study of fibre pull‐out behaviour is well understood and described herein under additional reading. Practical testing to show contractors and clients how to balance the dose of fibres in concrete, so that synthetic fibres could be used as a steel fibre replacement, is not well researched. This paper bridges the information gap.

Details

Structural Survey, vol. 28 no. 5
Type: Research Article
ISSN: 0263-080X

Keywords

Article
Publication date: 22 October 2018

Salvatore Brischetto

The main idea is the comparison between composites including natural fibres (such as the linoleum fibres) and typical composites including carbon fibres or glass fibres

Abstract

Purpose

The main idea is the comparison between composites including natural fibres (such as the linoleum fibres) and typical composites including carbon fibres or glass fibres. The comparison is proposed for different structures (plates, cylinders, cylindrical and spherical shells), lamination sequences (cross-ply laminates and sandwiches with composite skins) and thickness ratios. The purpose of this paper is to understand if linoleum fibres could be useful for some specific aerospace applications.

Design/methodology/approach

A general exact three-dimensional shell model is used for the static analysis of the proposed structures to obtain displacements and stresses through the thickness. The shell model is based on a layer-wise approach and the differential equations of equilibrium are solved by means of the exponential matrix method.

Findings

In qualitative terms, composites including linoleum fibres have a mechanical behaviour similar to composites including glass or carbon fibres. In terms of stress and displacement values, composites including linoleum fibres can be used in aerospace applications with limited loads. They are comparable with composites including glass fibres. In general, they are not competitive with respect to composites including carbon fibres. Such conclusions have been verified for different structure geometries, lamination sequences and thickness ratios.

Originality/value

The proposed general exact 3D shell model allows the analysis of different geometries (plates and shells), materials and laminations in a unified manner using the differential equilibrium equations written in general orthogonal curvilinear coordinates. These equations written for spherical shells degenerate in those for cylinders, cylindrical shell panels and plates by means of opportune considerations about the radii of curvature. The proposed shell model allows an exhaustive comparison between different laminated and sandwich composite structures considering the typical zigzag form of displacements and the correct imposition of compatibility conditions for displacements and equilibrium conditions for transverse stresses.

Details

Aircraft Engineering and Aerospace Technology, vol. 90 no. 9
Type: Research Article
ISSN: 1748-8842

Keywords

Article
Publication date: 13 September 2021

Monica Puri Sikka and Mandira Mondal

Cleanrooms are highly controlled enclosed rooms where air quality is monitored and ensured to have less contamination according to standard cleanliness level. Air filters…

Abstract

Purpose

Cleanrooms are highly controlled enclosed rooms where air quality is monitored and ensured to have less contamination according to standard cleanliness level. Air filters are used to optimize indoor air quality and remove air pollutants. Filter media and filtering system are decided as per requirement. Depth filter media are mostly used in cleanroom filtrations. This paper aims to present a comprehensive review of the evolution of cleanroom filter media. It evaluates the advantages and disadvantages of air filter media. It is also studied which air filters have additional properties such as anti-microbial properties, anti-odour properties and chemical absorbent. Development and innovation of air filters and filtration techniques are necessary to improve the performance via the synergistic effect and it can be a possible avenue of future research.

Design/methodology/approach

This paper aims to drive the future of air filter research and development in achieving high-performance filtration with high filtration efficiency, low operational cost and high durability. Air pollutants are classified into three types: suspended particles, volatile organic pollutants and microorganisms. Technologies involved in purification are filtration, water washing purification, electrostatic precipitation and anion technology. They purify the air by running it through a filter medium that traps dust, hair, pet fur and debris. As air passes through the filter media, they function as a sieve, capturing particles. The fibres in the filter medium provide a winding path for airflow. There are different types of air filters such as the high-efficiency particulate air filter, fibreglass air filter and ultra-low particulate air filter.

Findings

Emerging filtration technologies and filters such as nanofibres, filters with polytetrafluoroethylene membrane are likely to become prevalent over the coming years globally. The introduction of indoor air filtration with thermal comfort can be a possible avenue of future research along with expanding indoor environment monitoring and improving air quality predictions. New air filters and filtration technologies having better performance with low cost and high durability must be developed which can restrict multiple types of pollutants at the same time.

Originality/value

The systematic literature review approach used in this paper highlights the emerging trends and issues in cleanroom filtration in a structured and thematic manner, enabling future work to progress as it will continue to develop and evolve.

Details

Research Journal of Textile and Apparel, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1560-6074

Keywords

Article
Publication date: 1 June 2003

Małgorzata Zimniewska, Marina Michalak, Izabella Krucińska and Bogusław Więcek

In this paper, the clothes made of synthetic and natural fibres were tested. The characteristics of selected physical parameters such as temperature, electrical…

Abstract

In this paper, the clothes made of synthetic and natural fibres were tested. The characteristics of selected physical parameters such as temperature, electrical resistance, thermal resistance of fabrics used for tested clothes have been presented. The electrostatical charge and temperature distribution of clothes were investigated on human body. The temperature distribution and the coefficient of heat transmission were measured by a new thermovision method.

Details

International Journal of Clothing Science and Technology, vol. 15 no. 3/4
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 1 May 1973

Rising wool prices and technical advances in artificial fibres have provided Europe's man‐made textile producer's with booming business. But with prices yet to regain a…

Abstract

Rising wool prices and technical advances in artificial fibres have provided Europe's man‐made textile producer's with booming business. But with prices yet to regain a healthy level after last year's production surplus, British manufacturers view with growing concern the Government's counter inflation measures. Roger Eglin reports.

Details

Industrial Management, vol. 73 no. 5
Type: Research Article
ISSN: 0007-6929

Article
Publication date: 1 March 1956

VERNON D. FREEDLAND

Although textiles is one of the oldest crafts and goes back to prehistory—it is believed that weaving grew up in the neolithic or later stone age—our modern civilization…

137

Abstract

Although textiles is one of the oldest crafts and goes back to prehistory—it is believed that weaving grew up in the neolithic or later stone age—our modern civilization is producing such rapid and numerous developments in so many aspects of the subject that the individual is hard put to keep up with only a fraction of them.

Details

Aslib Proceedings, vol. 8 no. 3
Type: Research Article
ISSN: 0001-253X

Article
Publication date: 27 October 2020

Pavana Kumara Bellairu, Shreeranga Bhat and E.V. Gijo

The aim of this article is to demonstrate the development of environment friendly, low cost natural fibre composites by robust engineering approach. More specifically, the…

Abstract

Purpose

The aim of this article is to demonstrate the development of environment friendly, low cost natural fibre composites by robust engineering approach. More specifically, the prime objective of the study is to optimise the composition of natural fibre reinforced polymer nanocomposites using a robust statistical approach.

Design/methodology/approach

In this research, the material is prepared using multi-walled carbon nanotubes (MWCNT), Cantala fibres and Epoxy Resin in accordance with the ASTM (American Society for Testing and Materials) standards. Further, the composition is prepared and optimised using the mixture-design approach for the flexural strength of the material.

Findings

The results of the study indicate that MWCNT plays a vital role in increasing the flexural strength of the composite. Moreover, it is observed that interactions between second order and third order parameters in the composition are statistically significant. This leads to proposing a special cubic model for the novel composite material with residual analysis. Moreover, the methodology assists in optimising the mixture component values to maximise the flexural strength of the novel composite material.

Originality/value

This article attempts to include both MWCNT and Cantala fibres to develop a novel composite material. In addition, it employs the mixture-design technique to optimise the composition and predict the model of the study in a step-by-step manner, which will act as a guideline for academicians and practitioners to optimise the material composition with specific reference to natural fibre reinforced nanocomposites.

Details

Multidiscipline Modeling in Materials and Structures, vol. 17 no. 2
Type: Research Article
ISSN: 1573-6105

Keywords

Article
Publication date: 28 July 2021

Navin Kumar, R.S. Walia and Surjit Angra

The aim of the present study is to find the tribological properties of newly developed polyester-based hybrid glass-jute fibre reinforced plastic composites loaded with…

30

Abstract

Purpose

The aim of the present study is to find the tribological properties of newly developed polyester-based hybrid glass-jute fibre reinforced plastic composites loaded with different weight per cent of hybrid filler particles were investigated under a dry sliding medium from room temperature to 75°C.

Design/methodology/approach

The study was carried out using a pin-on-disc wear test set-up. The design of experiments was carried out in a controlled way using a central composite design based on response surface methodology to observe the effect of various parameters i.e. sliding velocity, sliding distance, the temperature of counterface and different applied load conditions during dry-sliding.

Findings

The maximum wear resistance was found at 9 Wt% loading of filler, 4 ms-1 sliding velocity, 30 N applied load, 54°C temperature of the counterface and 1,100 m sliding distance condition. Optimum values of hybrid filler loading, sliding velocity, applied load, the temperature of the counterface and sliding distance for the minimum coefficient of friction value and minimum friction force are 9 Wt%, 4 ms−1, 30 N, 54° C, 1,100 m and 12 Wt%, 3 ms−1, 20 N, 59°C and 1,100 m, respectively. The worn surface morphology was studied using scanning electron microscope, for wear dominant mechanisms.

Originality/value

The tribological properties of newly developed polyester-based hybrid glass-jute fibre reinforced plastic composites loaded with different weight % of hybrid filler particles, were investigated under dry sliding medium from room temperature to 75°C has not been attempted yet.

Details

World Journal of Engineering, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1708-5284

Keywords

Article
Publication date: 17 April 2020

Songyi Yan, Claudia Elisabeth Henninger, Celina Jones and Helen McCormick

This research investigates sustainable knowledge from a consumer perspective, thereby focussing on the issue of microfibre pollution (MFP) within the context of the…

1313

Abstract

Purpose

This research investigates sustainable knowledge from a consumer perspective, thereby focussing on the issue of microfibre pollution (MFP) within the context of the athleisure wear industry.

Design/methodology/approach

This research is exploratory in nature and supports its findings with 15 in-depth semi-structured interviews with consumers who have an invested interest in athleisure wear and have either a fashion or a textile science background.

Findings

The results provide an insight into how different types of knowledge influence one another and which ones can act as barriers to acting more sustainably and more specifically in reducing MFP.

Research limitations/implications

Although the sample size is relatively small, participants were selected carefully to have different backgrounds and lifestyles, thus, providing valuable insights that can be explored further in the future.

Practical implications

Communication is a key issue that has been identified and which needs to be carefully addressed by providing both quantity and quality.

Originality/value

This research identifies interlinks between different knowledge types and potential barriers that need to be overcome in order to act more sustainably.

Details

Journal of Fashion Marketing and Management: An International Journal, vol. 24 no. 3
Type: Research Article
ISSN: 1361-2026

Keywords

Article
Publication date: 1 June 2002

Roshan Shishoo

This paper outlines the innovations in high functional and high performance fibres for applications in protective clothing, including fibres for flame and heat protection…

4139

Abstract

This paper outlines the innovations in high functional and high performance fibres for applications in protective clothing, including fibres for flame and heat protection. It also describes some typical woven and non‐woven constructions for such applications. And presents the trends in producing smart textile materials, capable of interacting with human/environmental conditions.

Details

International Journal of Clothing Science and Technology, vol. 14 no. 3/4
Type: Research Article
ISSN: 0955-6222

Keywords

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