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Article
Publication date: 23 March 2020

Guochao Zheng, Fuli Wang, Baiping Yan and Runting Cheng

The purpose of this study is to suppress the temperature rise of high voltage wall bushing metal plate.

Abstract

Purpose

The purpose of this study is to suppress the temperature rise of high voltage wall bushing metal plate.

Design/methodology/approach

First, the authors built a model of a traditional metal plate and got the magnetic field intensity distribution by FEA tools. Optimized according to the magnetic field intensity distribution, the authors slot the traditional metal plate and embed permanent magnets in the slot. Finally, the authors got the temperature distribution diagrams of the above three cases at different current levels by FEA tools.

Findings

Slotted metal plate is beneficial to suppress magnetic induction intensity, but the improvement of the magnetic induction intensity uniformity is not obvious. The method of embedding a permanent magnet in a slotted metal plate can optimize the magnitude and uniformity of the magnetic induction intensity in the metal plate. The larger the current passing through the metal plate, the better the temperature suppression effect of the slotted metal plate and the slotted metal plate embedded in the permanent magnet.

Originality/value

The effect of structural factors, slotting plate and setting permanent magnets on slots on the temperature of supporting plate is studied. The paper proposes two methods, slotting metal panels and embedding permanent magnet metal panels, to solve the problems of eddy current loss and high calorific value of the panel, which is of great significance to the safety of the grid equipment.

Details

Circuit World, vol. 46 no. 4
Type: Research Article
ISSN: 0305-6120

Keywords

Article
Publication date: 19 July 2021

Kawaljit Singh Randhawa and Ashwin Patel

The mechanical and tribological properties of polymers and polymer composites vary with different environmental conditions. This paper aims to review the influence of…

Abstract

Purpose

The mechanical and tribological properties of polymers and polymer composites vary with different environmental conditions. This paper aims to review the influence of humidity/water conditions on various polymers and polymer composites' mechanical properties and tribological behaviors.

Design/methodology/approach

The influence of humidity and water absorption on mechanical and tribological properties of various polymers, fillers and composites has been discussed in this paper. Tensile strength, modulus, yield strength, impact strength, COF and wear rates of polymer composites are compared for different environmental conditions. The interaction between the water molecules and hydrophobic polymers is also represented.

Findings

Pure polymer matrices show somewhat mixed behavior in humid environments. Absorbed moisture generally plasticizes the epoxies and polyamides and lowers the tensile strength, yield strength and modulus. Wear rates of PVC generally decrease in humid environments, while for polyamides, it increases. Fillers like graphite and boron-based compounds exhibit low COF, while MoS2 particulate fillers exhibit higher COF at high humidity and water conditions. The mechanical properties of fiber-reinforced polymer composites tend to decrease as the rate of humidity increases while the wear rates of fiber-reinforced polymer composites show somewhat mixed behavior. Particulate fillers like metals and advanced ceramics reinforced polymer composites exhibit low COF and wear rates as the rate of humidity increases.

Originality/value

The mechanical and tribological properties of polymers and polymer composites vary with the humidity value present in the environment. In dry conditions, wear loss is determined by the hardness of the contacting surfaces, which may not effectively work for high humid environments. The tribological performance of composite constituents, i.e. matrix and fillers in humid environments, defines the overall performance of polymer composite in said environments.

Details

Industrial Lubrication and Tribology, vol. 73 no. 9
Type: Research Article
ISSN: 0036-8792

Keywords

Article
Publication date: 29 August 2019

Patricio Javier Chiesa and Wojciech Przychodzen

The purpose of this study is to review the development of the socially sustainable supply chain management field.

1096

Abstract

Purpose

The purpose of this study is to review the development of the socially sustainable supply chain management field.

Design/methodology/approach

The 112 most cited papers in the field until 2017 are analysed using a state-of-the-art structured literature review model borrowed from the accounting field.

Findings

This study highlights the increasing number of publications across the years, the diversity of journals and the type of authors addressing the topic. It reveals that qualitative studies focused on large companies in the garment, food and electronics sectors and on private regulations capture most of the attention, with Asia, Europe and North America being the most scrutinised locations. Drivers and barriers for socially sustainable supply chain management are summarised, clustered and confronted. This study also evaluates how the sustainability and corporate social responsibility concepts are used in the above field and analyses the existing definitions of social sustainability.

Research limitations/implications

This study incites researchers to broaden their studies to diverse sectors and locations, addressing different levels of supply chains with quantitative techniques and clearer conceptual foundations.

Practical implications

This study incites practitioners to further contribute to this scholars-dominated research field, offering their practical insights and perspectives.

Originality/value

This study offers original insights and critiques of the literature, highlighting its gaps and proposing new research avenues for the future.

Details

Social Responsibility Journal, vol. 16 no. 8
Type: Research Article
ISSN: 1747-1117

Keywords

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