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1 – 10 of over 12000
Article
Publication date: 8 January 2018

Hongjuan Yang, Lin Fu, Yanhua Liu, Weiji Qian and Bo Hu

This paper aims to investigate the delamination wear properties of a carbon strip in a carbon strip rubbing against a copper wire at the high-sliding speed (380 km/h) with or…

Abstract

Purpose

This paper aims to investigate the delamination wear properties of a carbon strip in a carbon strip rubbing against a copper wire at the high-sliding speed (380 km/h) with or without electrical current.

Design/methodology/approach

The friction and wear properties of a carbon strip in a carbon strip rubbing against a copper wire are tested on the high-speed wear tester whose speed can reach up to 400 km/h. The test data have been collected by the high-speed data collector. The worn surfaces of the carbon strip are observed by the scanning electron microscope.

Findings

It was found that there was a significant increase of the delamination wear with the decrease of the normal load when the electric current is applied. The size of the flake-like peeling also increases with the decrease of normal load. The delamination wear extends gradually from the edge of the erosion pits to the surrounding area with the decrease of the normal load. However, the delamination wear never appears in the absence of electric current. It is proposed that the decreased normal load and the big electrical current are the major causes of the delamination wear of the carbon strip.

Originality value

The experimental test at high-sliding speed of 380 km/h was performed for the first time, and the major cause of the delamination was discovered in this paper.

Details

Industrial Lubrication and Tribology, vol. 70 no. 1
Type: Research Article
ISSN: 0036-8792

Keywords

Article
Publication date: 1 August 2006

Yaodong Cui

To provide an algorithm for the two‐dimensional guillotine‐cutting problem of punched strips.

Abstract

Purpose

To provide an algorithm for the two‐dimensional guillotine‐cutting problem of punched strips.

Design/methodology/approach

It is assumed that the stock sheet is cut into blanks in two stages. First a guillotine shear cuts the sheet into strips, and then a stamping press punches out the blanks from the strips. To generate good strip layout, the sheet is divided into two segments with an orthogonal cut. Each segment consists of strips in the same direction. The strip directions of the two segments are perpendicular to each other. A recursion function is established to determine the optimal strip layouts on segments of different lengths. All possible segment lengths are considered either explicitly or implicitly. Two segments of different strip directions are selected optimally to compose the final cutting pattern.

Findings

A strip can be taken as consisting of rectangular pieces, where the length of the first piece may be longer than that of the others. Normal lengths and widths can be defined according to the properties of punched strips. Considering only normal segment lengths and using lower bound in the recursion function can reduce the computation time drastically.

Practical implications

Based on the algorithm, practitioners may develop applications to solve real world two‐dimensional cutting problem of punched strips.

Originality/value

The two‐segment cutting patterns for punched strips are proposed. They are simple to cut and may be welcomed in practice.

Details

Engineering Computations, vol. 23 no. 6
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 1 February 1988

B. Suárez, J. Miquel Canet and E. Oñate

A unified approach for the vibration analysis of curved or straight prismatic plates and bridges and axisymmetric shells using a finite strip method based in Reissner—Mindlin…

Abstract

A unified approach for the vibration analysis of curved or straight prismatic plates and bridges and axisymmetric shells using a finite strip method based in Reissner—Mindlin shell theory is presented. Details of obtaining all relevant strip matrices and vectors are given. It is also shown how the use of the simple linear two node strip with reduced integration leads to direct explicit forms of all relevant matrices. Examples of application which show the accuracy of the linear strip for free vibration analysis of structures are presented.

Details

Engineering Computations, vol. 5 no. 2
Type: Research Article
ISSN: 0264-4401

Article
Publication date: 17 October 2022

Fengwei Jing, Mengyang Zhang, Jie Li, Guozheng Xu and Jing Wang

Coil shape quality is the external representation of strip product quality, and it is also a direct reflection of strip production process level. This paper aims to predict the…

Abstract

Purpose

Coil shape quality is the external representation of strip product quality, and it is also a direct reflection of strip production process level. This paper aims to predict the coil shape results in advance based on the real-time data through the designed algorithm.

Design/methodology/approach

Aiming at the strip production scale and coil shape application requirements, this paper proposes a strip coil shape defects prediction algorithm based on Siamese semi-supervised denoising auto-encoder (DAE)-convolutional neural networks. The prediction algorithm first reconstructs the information eigenvectors using DAE, then combines the convolutional neural networks and skip connection to further process the eigenvectors and finally compares the eigenvectors with the full connect neural network and predicts the strip coil shape condition.

Findings

The performance of the model is further verified by using the coil shape data of a steel mill, and the results show that the overall prediction accuracy, recall rate and F-measure of the model are significantly better than other commonly used classification models, with each index exceeding 88%. In addition, the prediction results of the model for different steel grades strip coil shape are also very stable, and the model has strong generalization ability.

Originality/value

This research provides technical support for the adjustment and optimization of strip coil shape process based on the data-driven level, which helps to improve the production quality and intelligence level of hot strip continuous rolling.

Details

Assembly Automation, vol. 42 no. 6
Type: Research Article
ISSN: 0144-5154

Keywords

Article
Publication date: 4 November 2014

Vaughan Reimers and Fred Chao

The purpose of this study is to determine the role of convenience in a recreational shopping trip. In an effort to address the shopping strip’s forfeiture of market share to the…

2789

Abstract

Purpose

The purpose of this study is to determine the role of convenience in a recreational shopping trip. In an effort to address the shopping strip’s forfeiture of market share to the mall and the Internet, retail planners have utilised a variety of intervention strategies. One such strategy is to differentiate the strip by emphasising its hedonic attributes. An often overlooked alternative is to compete with both of these formats in a key area of competitive disadvantage – convenience. Whereas these two alternatives have traditionally been regarded as separate strategies, this study examines whether convenience actually serves as a source of satisfaction in a hedonic shopping context.

Design/methodology/approach

A recreational shopping trip to a shopping strip (also referred to as Main Street or the High Street) in Melbourne, Australia, served as the context for this study. The study used a quantitative survey approach to collect its data and structural equation modelling to analyse it.

Findings

Surprisingly, the hedonic attributes of a shopping strip do not influence trip satisfaction in the context of a recreational shopping strip. Contrary to a significant body of academic research, it is instead the time-saving and distance-minimising properties of a shopping strip, as well as its overall convenience, which determine satisfaction.

Originality/value

The results have important implications for Town Centre Management schemes because they suggest that responsibility for providing a hedonic shopping experience rests with its individual retailers. Instead, the role of strip planners is to facilitate the other side of the value-equation by minimising the hassles involved in strip shopping. The results of this study also question the traditional belief that hedonic- and convenience-based rejuvenation strategies should be treated as two distinct strategies. Instead, convenience should be regarded as a prerequisite to a satisfying recreational shopping trip.

Details

European Journal of Marketing, vol. 48 no. 11/12
Type: Research Article
ISSN: 0309-0566

Keywords

Article
Publication date: 9 August 2019

Chun-Jian Su, Yong Li, De-Xing Yang, Zhen-Hua Bai, Rui Wang, Yu-Ting Lv and Jian-Gao Duan

The purpose of this study is to solve the key problem of the residual stress of strip in buckling and deviation during the continuous annealing process (CAP).

Abstract

Purpose

The purpose of this study is to solve the key problem of the residual stress of strip in buckling and deviation during the continuous annealing process (CAP).

Design/methodology/approach

Considering the one-to-one correspondence between deformation and residual stress, the strip was divided into multiple elements. To obtain the total deformation of each element, the influence model of some factors on the deformation of steel strip element was established. Then, according to the constitutive equation of residual stress and deformation, and the deformation coordination relation between strip elements, a set of calculation model, which is suitable for residual stress of strip during CAP was established, the model precision was verified by finite element method simulation, and the influences on residual stress of strip were also analyzed.

Findings

The weighted calculation of comparison between analytical results and simulation shows that the accuracy of the analytical method is within 10 per cent, which fully meets the requirements.

Originality/value

The different residual stress of steel strip can be displayed quickly and intuitively in the synchronous process segment according to this model, which is of great importance to the prevention of strip buckling and deviation.

Details

Engineering Computations, vol. 37 no. 2
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 1 June 2000

P.Di Barba

Introduces the fourth and final chapter of the ISEF 1999 Proceedings by stating electric and magnetic fields are influenced, in a reciprocal way, by thermal and mechanical fields…

Abstract

Introduces the fourth and final chapter of the ISEF 1999 Proceedings by stating electric and magnetic fields are influenced, in a reciprocal way, by thermal and mechanical fields. Looks at the coupling of fields in a device or a system as a prescribed effect. Points out that there are 12 contributions included ‐ covering magnetic levitation or induction heating, superconducting devices and possible effects to the human body due to electric impressed fields.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 19 no. 2
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 4 January 2011

Kim Klarskov Jeppesen and Ulrik Gorm Møller

The purpose of this paper is to document a Danish fraud scheme, in which a large number of limited companies were stripped of their assets leaving them with nothing but tax debt…

1362

Abstract

Purpose

The purpose of this paper is to document a Danish fraud scheme, in which a large number of limited companies were stripped of their assets leaving them with nothing but tax debt, eventually causing the Danish Tax and Customs Administration to lose large sums. Furthermore, the purpose is to analyse why the asset‐stripping schemes occurred in a mature market economy with a strong corporate governance system and a low level of corruption.

Design/methodology/approach

The research is conducted as a longitudinal single case study based on documentary research.

Findings

The Danish case indicates that asset stripping may take place in mature market economies to the extent that perpetrators are able to circumvent the corporate governance system by giving lawyers, public accountants and banks incentives to act less critically towards dubious business transactions.

Research limitations/implications

The opportunity and rationalisations supporting the fraud are particular to the Danish context.

Practical implications

The paper provides insights into the consequences of professionals disregarding their duty to serve the public interest.

Social implications

The paper provides an example on how to circumvent the social supervisory system of a mature market economy.

Originality/value

The paper contributes to the knowledge about asset stripping by documenting and analysing the phenomenon in a mature market economy context.

Details

Journal of Financial Crime, vol. 18 no. 1
Type: Research Article
ISSN: 1359-0790

Keywords

Article
Publication date: 27 March 2009

Zhou Gaofeng, Zhao Yulong and Jiang Zhuangde

The flexibly thin film grid pressure sensor is mainly used to detect the interface pressure distribution between touching objects. Aim at larger measurement error, the strip…

Abstract

Purpose

The flexibly thin film grid pressure sensor is mainly used to detect the interface pressure distribution between touching objects. Aim at larger measurement error, the strip double sensing layer pressure sensor are designed and fabricated and tested.

Design/methodology/approach

Defects and characteristic of the flexibly thin film grid pressure sensor based on piezoresistive effect are analyzed and pointed out in this paper. After comparison of four sensors, the strip double sensing layer pressure sensor was thought to be best.

Findings

Experiment shows that the strip double sensing layer pressure sensor could eliminate the measurement error basically and illustrates the validity of measuring the interface pressure distribution between area touching objects.

Research limitations/implications

In this paper, only the strip double sensing layer pressure sensor was used to verify the validity of measuring the static interface pressure distribution between peach and platform. But there also exists some problems such as the adhering reliability of electrode and the unevenness of sensing layer. These problems could be overcome in the future research if the fabricating procedure and ingredient of material could be adjusted correctly.

Practical implications

The strip double sensing layer pressure sensor could be applied to detect the static interface pressure distribution such as peach pressure distribution. For dynamic measurement, this research needs to be done further.

Originality/value

Strip double sensing layer pressure sensor with simple “interlayer” structure and with low manufacture cost is presented to basically eliminate the measurement error of interface pressure distribution of original sensor.

Details

Sensor Review, vol. 29 no. 2
Type: Research Article
ISSN: 0260-2288

Keywords

Article
Publication date: 1 February 2000

Richard Friedrich

This bibliography contains references to papers, conference proceedings, theses and books dealing with finite strip, finite prism and finite layer analysis of structures…

1193

Abstract

This bibliography contains references to papers, conference proceedings, theses and books dealing with finite strip, finite prism and finite layer analysis of structures, materially and/or geometrically linear or non‐linear.

Details

Engineering Computations, vol. 17 no. 1
Type: Research Article
ISSN: 0264-4401

Keywords

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