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Article
Publication date: 13 March 2017

Jun Cao, Zhongwei Yin, Yuqing Cui, Hulin Li, Gengyuan Gao and Xinbo Wang

The purpose of this study was to solve the problem of most woven-fabric self-lubricating bearings that find it difficult to function at temperatures above 320°C, by designing a…

Abstract

Purpose

The purpose of this study was to solve the problem of most woven-fabric self-lubricating bearings that find it difficult to function at temperatures above 320°C, by designing a new type of new nuclear joint bearing. The results of this study will help designers to achieve accurate stress distribution, displacement deformation, fatigue life and damage of bearings. All of these can be a guide for designing self-lubricating joint bearings.

Design/methodology/approach

Finite element analysis is undertaken to simulate the new design bearings. To get the most appropriate and accurate results, the room temperature simulation (Simulation A), the modulus of elasticity that changes with temperature (Simulation B) and the thermal-structure-coupled simulation (Simulation C) are compared. The fatigue simulation is conducted to verify whether the self-lubricating method is reasonable and whether the bearing can function for over 60 years in an enclosed environment.

Findings

Stress distribution and displacement deformation of joint bearing can be accurately achieved via the thermal-structure coupled simulation. Work life and damage results have been achieved via the fatigue analysis, and the suggested working loads can be calculated via safety factors.

Originality/value

The newly designed joint bearing in which the graphite is laid on the outside of the inner ring functions and self-lubricates at temperatures above 320°C.

Details

Industrial Lubrication and Tribology, vol. 69 no. 2
Type: Research Article
ISSN: 0036-8792

Keywords

Article
Publication date: 18 October 2018

Jun Cao and Zhongwei Yin

The purpose of this paper is to solve the problem of joint bearings that cannot work in high temperature because of their high frictional coefficients.

Abstract

Purpose

The purpose of this paper is to solve the problem of joint bearings that cannot work in high temperature because of their high frictional coefficients.

Design/methodology/approach

Two methods of inlaying graphites and liquid spraying of MoS2 are designed. The arrangement of graphites is shown and its frictional coefficients (COFs) are discussed. MoS2 coating is deposited by liquid spraying. The ingredients of liquid spraying of MoS2 are illustrated. Stresses, structure deformations and fatigue life are analyzed by finite element analysis.

Findings

Results show that both two designed methods can decrease COFs effectively. All stresses are in the limit of the maximum permissible stresses. The new designed bearings can be safety worked in sealed and high temperature environment which are proved by fatigue analyses.

Practical implications

Two new designs can help joint bearings work in nuclear plants because of their low COFs and litter wear. The new designs can improve bearings life.

Originality/value

Two methods of decreasing COFs of joint bearings are designed in this paper. The technologies are illustrated. The proper scopes of applications of two designed methods are discussed.

Details

Industrial Lubrication and Tribology, vol. 70 no. 9
Type: Research Article
ISSN: 0036-8792

Keywords

Article
Publication date: 5 August 2019

Annika Beelitz and Doris M. Merkl-Davies

The purpose of this paper is to examine a case of companies cooperating with the State to prevent a public controversy over nuclear power following the Fukushima disaster and…

Abstract

Purpose

The purpose of this paper is to examine a case of companies cooperating with the State to prevent a public controversy over nuclear power following the Fukushima disaster and achieve mutually beneficial policy outcomes. It analyses the private and public communication of pro-nuclear corporate, political and regulatory actors.

Design/methodology/approach

Drawing on the political economy theory, the study examines how actors mobilised power by accessing an existing social network to agree a joint public communication strategy in order to ensure public support for the continuation of nuclear power generation in the UK. It traces discursive frames from their inception in private communication to their reproduction in public communication and their dissemination via the media.

Findings

The study provides evidence of pro-nuclear actors cooperating behind the scenes to achieve consistent public pro-nuclear messaging. It finds evidence of four discursive frames: avoiding knee-jerk reactions, lessons learned, safety and nuclear renaissance. In combination, they guide audiences’ evaluation of the consequences of the Fukushima disaster for the UK in favour of continuing the commercial use of nuclear energy.

Originality/value

The private e-mail exchange between pro-nuclear actors presents a unique opportunity to examine the mobilisation of less visible forms of power in the form of agenda setting (manipulation) and discursive framing (domination) in order to influence policy outcomes and shape public opinion on nuclear energy. This is problematic because it constitutes a lack of transparency and accountability on part of the State with respect to policy outcomes and restricts the civic space by curtailing the articulation of alternative interests and voices.

Details

Accounting, Auditing & Accountability Journal, vol. 32 no. 5
Type: Research Article
ISSN: 0951-3574

Keywords

Article
Publication date: 1 January 1977

A distinction must be drawn between a dismissal on the one hand, and on the other a repudiation of a contract of employment as a result of a breach of a fundamental term of that…

2050

Abstract

A distinction must be drawn between a dismissal on the one hand, and on the other a repudiation of a contract of employment as a result of a breach of a fundamental term of that contract. When such a repudiation has been accepted by the innocent party then a termination of employment takes place. Such termination does not constitute dismissal (see London v. James Laidlaw & Sons Ltd (1974) IRLR 136 and Gannon v. J. C. Firth (1976) IRLR 415 EAT).

Details

Managerial Law, vol. 20 no. 1
Type: Research Article
ISSN: 0309-0558

Article
Publication date: 1 June 2002

George K. Chacko

Develops an original 12‐step management of technology protocol and applies it to 51 applications which range from Du Pont’s failure in Nylon to the Single Online Trade Exchange…

3764

Abstract

Develops an original 12‐step management of technology protocol and applies it to 51 applications which range from Du Pont’s failure in Nylon to the Single Online Trade Exchange for Auto Parts procurement by GM, Ford, Daimler‐Chrysler and Renault‐Nissan. Provides many case studies with regards to the adoption of technology and describes seven chief technology officer characteristics. Discusses common errors when companies invest in technology and considers the probabilities of success. Provides 175 questions and answers to reinforce the concepts introduced. States that this substantial journal is aimed primarily at the present and potential chief technology officer to assist their survival and success in national and international markets.

Details

Asia Pacific Journal of Marketing and Logistics, vol. 14 no. 2/3
Type: Research Article
ISSN: 1355-5855

Keywords

Article
Publication date: 1 September 1999

Jaroslav Mackerle

This paper gives a review of the finite element techniques (FE) applied in the analysis and design of machine elements; bolts and screws, belts and chains, springs and dampers…

4353

Abstract

This paper gives a review of the finite element techniques (FE) applied in the analysis and design of machine elements; bolts and screws, belts and chains, springs and dampers, brakes, gears, bearings, gaskets and seals are handled. The range of applications of finite elements on these subjects is extremely wide and cannot be presented in a single paper; therefore the aim of this paper is to give FE researchers/users only an encyclopaedic view of the different possibilities that exist today in the various fields mentioned above. An Appendix included at the end of the paper presents a bibliography on finite element applications in the analysis/design of machine elements for 1977‐1997.

Details

Engineering Computations, vol. 16 no. 6
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 1 April 1959

THE Engineering, Marine, Welding and Nuclear Energy Exhibition opens at Olympia on April 16th and runs until April 30. It is open from 10 a.m. to 6 p.m. each day (except Sundays)…

Abstract

THE Engineering, Marine, Welding and Nuclear Energy Exhibition opens at Olympia on April 16th and runs until April 30. It is open from 10 a.m. to 6 p.m. each day (except Sundays), with the exception of April 27th, 28th, and 29th, when it remains open until 8 p.m. Price of admission is 3s. There are well over 500 stands and of these between 60 and 70 are showing products that should be of interest to most readers of Scientific Lubrication, since they concern some type of lubrication equipment. Amongst these are the following, and the illustrations reproduced here concern items which will be exhibited on the stands. Items in bold type describe new products or products being exhibited for the first time.

Details

Industrial Lubrication and Tribology, vol. 11 no. 4
Type: Research Article
ISSN: 0036-8792

Article
Publication date: 1 June 2000

George K. Chako

Briefly reviews previous literature by the author before presenting an original 12 step system integration protocol designed to ensure the success of companies or countries in…

7259

Abstract

Briefly reviews previous literature by the author before presenting an original 12 step system integration protocol designed to ensure the success of companies or countries in their efforts to develop and market new products. Looks at the issues from different strategic levels such as corporate, international, military and economic. Presents 31 case studies, including the success of Japan in microchips to the failure of Xerox to sell its invention of the Alto personal computer 3 years before Apple: from the success in DNA and Superconductor research to the success of Sunbeam in inventing and marketing food processors: and from the daring invention and production of atomic energy for survival to the successes of sewing machine inventor Howe in co‐operating on patents to compete in markets. Includes 306 questions and answers in order to qualify concepts introduced.

Details

Asia Pacific Journal of Marketing and Logistics, vol. 12 no. 2/3
Type: Research Article
ISSN: 1355-5855

Keywords

Article
Publication date: 1 October 1961

A paper with the above title was presented by P. E. B. Vaile, A.M.I.Mech.E., for discussion at a meeting of the Institution of Mechanical Engineers at the Social Club of Hoffmann…

Abstract

A paper with the above title was presented by P. E. B. Vaile, A.M.I.Mech.E., for discussion at a meeting of the Institution of Mechanical Engineers at the Social Club of Hoffmann Manufacturing Co. Ltd., Chelmsford, on 14th September. The paper was sponsored by the Lubrication Group in conjunction with the Nuclear Energy Group. We give here extracts from this paper. Copies of the complete paper are available from The Institution of Mechanical Engineers, 1 Birdcage Walk, London, S.W.1., who invite written communications thereon, which should reach them not later than 31st October. The first part of this paper dealt with industrial power reactors of the CO2 cooled, graphite‐moderated types, high‐temperature gas‐cooled types, etc., and gave details of the U.K.A.E.A. requirements for nuclear lubricants.

Details

Industrial Lubrication and Tribology, vol. 13 no. 10
Type: Research Article
ISSN: 0036-8792

Article
Publication date: 1 April 1957

AMONGST the many engineering problems associated with the new field of nuclear power plants is that of lubricants. The problem here is more to do with lubricants than lubrication…

Abstract

AMONGST the many engineering problems associated with the new field of nuclear power plants is that of lubricants. The problem here is more to do with lubricants than lubrication since in spite of very high temperatures, existing products are generally capable of providing adequate lubrication, even although some special materials may need to be devised to provide longer life and special methods of application may be required. In most cases, pumps and turbines will operate at similar speeds and with similar bearing loads as those in conventional power stations and conventional high grade lubricants will, in most cases, meet the bill.

Details

Industrial Lubrication and Tribology, vol. 9 no. 4
Type: Research Article
ISSN: 0036-8792

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