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Article
Publication date: 9 September 2013

Isabel Coenen, Thomas Herold, Christelle Piantsop Mbo'o and Kay Hameyer

Manufacturing tolerances can result in an unwanted behavior of electrical machines. A quality control of machines subsequent to manufacturing is therefore required in order to…

260

Abstract

Purpose

Manufacturing tolerances can result in an unwanted behavior of electrical machines. A quality control of machines subsequent to manufacturing is therefore required in order to test whether the machines comply with its specifications. This paper aims to describe the consideration of rotor tolerances due to non-ideal manufacturing processes.

Design/methodology/approach

Various fault scenarios are studied employing numerical field simulations focusing the influence of rotor tolerances on current and back-EMF of the studied machine.

Findings

This analysis shows that electrical quantities are applicable to realize tolerance diagnosis by evaluating the influence of non-ideal manufactured rotor components on the back-EMF and current characteristics of the studied machine.

Practical implications

This study provides an approach how to estimate the influence of the manufacturing tolerances for realization of a reliable quality control. This is useful to ensure a high reliability of the manufactured machines.

Originality/value

This paper gives a close insight on how to investigate non-ideal manufacturing and in particular its influence on the stator current.

Details

COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, vol. 32 no. 5
Type: Research Article
ISSN: 0332-1649

Keywords

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Article
Publication date: 10 May 2011

Isabel Coenen, Mercedes Herranz Gracia and Kay Hameyer

The purpose of this paper is to describe how a minimisation of cogging torque is performed with respect to the non‐ideal manufacturing process, aiming at a robust design of the…

355

Abstract

Purpose

The purpose of this paper is to describe how a minimisation of cogging torque is performed with respect to the non‐ideal manufacturing process, aiming at a robust design of the studied machine, focusing on magnetisation faults and the use of different qualities of the permanent magnet material.

Design/methodology/approach

The applied methodology is a combination of design of experiments and finite element analysis to minimise the cogging torque of the estimated machine. Different qualities of the permanent magnet material are investigated by a stochastic analysis.

Findings

A robust design of the machine is achieved, which is verified by a stochastic analysis. Furthermore, this analysis shows the strong influence of the magnet quality on the cogging torque.

Practical implications

This paper provides a method for a machine design which is robust against non‐ideal manufacturing and an approach to prove the use of a bad quality for a possible reduction of the fabrication costs.

Originality/value

This paper gives a close insight on how to investigate non‐ideal manufacturing and in particular its influence on the cogging torque.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 30 no. 3
Type: Research Article
ISSN: 0332-1649

Keywords

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Article
Publication date: 10 September 2024

Priscila Cembranel, Luiza Gewehr, Leila Dal Moro, Paulo Guilherme Fuchs, Robert Samuel Birch and José Baltazar Salgueirinho Osório de Andrade Andrade Guerra

This study aims to investigate the contribution of higher education institutions (HEIs) to the sustainable development goals (SDGs) and propose strategies to cultivate a culture…

144

Abstract

Purpose

This study aims to investigate the contribution of higher education institutions (HEIs) to the sustainable development goals (SDGs) and propose strategies to cultivate a culture centred on the SDGs in HEIs.

Design/methodology/approach

The methodology used encompassed an integrative literature review, combining bibliographic analysis on how HEIs incorporate the SDGs into their practices, adopting a qualitative approach for the analysis and categorization of the results.

Findings

The multifaceted contributions of HEIs in promoting the SDGs stand out, through their roles in teaching, research, management and integration and communication between university and society.

Research limitations/implications

While influencing policies at various levels, HEIs encounter challenges in the effective integration of SDGs into their strategies. This underscores the need for contextualized governance, understanding students’ perspectives on sustainability and active external collaboration in policy formulation.

Practical implications

There is an urgent need to integrate SDGs into academic programmes, emphasizing the importance of redesigning curricula, actively involving teachers, researchers and students, establishing partnerships and promoting research applied to SDGs.

Social implications

The social relevance of the study lies in the emphasis on an SDG-centred culture, involving teaching, research, outreach, community engagement and governance practices.

Originality/value

The study’s uniqueness lies in identifying persistent challenges during the transition to an SDG-centred culture, necessitating multisectoral collaboration and educational programmes that integrate sustainability principles into the strategy of HEIs.

Details

International Journal of Sustainability in Higher Education, vol. 25 no. 7
Type: Research Article
ISSN: 1467-6370

Keywords

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Article
Publication date: 20 June 2017

Gabriel Centeno, Domingo Morales-Palma, Borja Gonzalez-Perez-Somarriba, Isabel Bagudanch, Juan José Egea-Guerrero, Luis Miguel Gonzalez-Perez, María Luisa García-Romeu and Carpóforo Vallellano

This paper aims to propose a functional methodology to produce cranial prostheses in polymeric sheet. Within the scope of rapid prototyping technologies, the single-point…

322

Abstract

Purpose

This paper aims to propose a functional methodology to produce cranial prostheses in polymeric sheet. Within the scope of rapid prototyping technologies, the single-point incremental forming (SPIF) process is used to demonstrate its capabilities to perform customized medical parts.

Design/methodology/approach

The methodology starts processing a patient’s computerized axial tomography (CAT) and follows with a computer-aided design and manufacture (CAD/CAM) procedure, which finally permits the successful manufacturing of a customized prosthesis for a specific cranial area.

Findings

The formability of a series of polymeric sheets is determined and the most restrictive material among them is selected for the fabrication of a specific partial cranial prosthesis following the required geometry. The final strain state at the outer surface of the prosthesis is analysed, showing the high potential of SPIF in manufacturing individualized cranial prostheses from polymeric sheet.

Originality/value

This paper proposes a complete methodology to design and manufacture polymer customized cranial prostheses from patients’ CATs using the novel SPIF technology. This is an application of a new class of materials to the manufacturing of medical prostheses by SPIF, which to this purpose has been mainly making use of metallic materials so far. Despite the use of polymers to this application is still to be validated from a medical point of view, transparent prostheses can already be of great interest in medical or engineering schools for teaching and research purposes.

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