Search results

1 – 10 of 74
Per page
102050
Citations:
Loading...
Access Restricted. View access options
Article
Publication date: 1 November 2002

H.S. Ketan, M.A. Al‐Bassam, M.B. Adel and I. Rawabdeh

Concurrent design and manufacturing is widely accepted as essential for obtaining an economically conceivable design solution for industrial production. Nevertheless the…

764

Abstract

Concurrent design and manufacturing is widely accepted as essential for obtaining an economically conceivable design solution for industrial production. Nevertheless the development of a viable computer‐aided inspection planning (CAIP) using CAD as input for effective NC‐measuring data preparation has not yet been successful. This paper introduces an approach to direct integration between CAD and CAIP by developing a feature‐based computer aided design/inspection planning (FB‐CAIP) system. The FB‐CAIP system contains a computer‐internal model of a product that contains sufficient information to guide the direct generation of NC code of the inspection activity. The developed small prototype system integrates knowledge‐based inspection planning with feature‐based CAD system for an automatic CNC measuring program generation of prismatic parts.

Details

Integrated Manufacturing Systems, vol. 13 no. 7
Type: Research Article
ISSN: 0957-6061

Keywords

Access Restricted. View access options
Article
Publication date: 8 December 2022

Jonathan S. Greipel, Regina M. Frank, Meike Huber, Ansgar Steland and Robert H. Schmitt

To ensure product quality within a manufacturing process, inspection processes are indispensable. One task of inspection planning is the selection of inspection characteristics…

253

Abstract

Purpose

To ensure product quality within a manufacturing process, inspection processes are indispensable. One task of inspection planning is the selection of inspection characteristics. For optimization of costs and benefits, key characteristics can be defined by which the product quality can be checked with sufficient accuracy. The manual selection of key characteristics requires substantial planning effort and becomes uneconomic if many product variants prevail. This paper, therefore, aims to show a method for the efficient determination of key characteristics.

Design/methodology/approach

The authors present a novel Algorithm for the Selection of Key Characteristics (ASKC) based on an auto-encoder and a risk analysis. Given historical measurement data and tolerances, the algorithm clusters characteristics with redundant information and selects key characteristics based on a risk assessment. The authors compare ASKC with the algorithm Principal Feature Analysis (PFA) using artificial and historical measurement data.

Findings

The authors find that ASKC delivers superior results than PFA. Findings show that the algorithms enable the cost-efficient selection of key characteristics while maintaining the informative value of the inspection concerning the quality.

Originality/value

This paper fills an identified gap for simplified inspection planning with the method for the efficient selection of key features via ASKC.

Details

International Journal of Quality & Reliability Management, vol. 40 no. 7
Type: Research Article
ISSN: 0265-671X

Keywords

Access Restricted. View access options
Article
Publication date: 1 July 2006

Ali Kamrani and Abhay Vijayan

The primary objective of this paper is to illustrate the development of an integrated product development environment using template‐based methodology. This system would thus act…

1805

Abstract

Purpose

The primary objective of this paper is to illustrate the development of an integrated product development environment using template‐based methodology. This system would thus act as an effective tool to reduce cost by foreseeing manufacturability constraints during concept generation phase. Concurrent engineering approach is applied to product and process development and thus the different phases of manufacturing are integrated together. The developed template system is then used for the design of a prototype using an electric motor.

Design/methodology/approach

In this paper, implementation of an integrated design based on templates is presented. The developed system components such as design calculations, component search, machine selection, process template retrieval and cost estimation. These components are integrated to relational databases. These databases contain all information required for integrated product and process development. Concepts used in developing the system are independent of the software used.

Findings

By using templates, the time required for new product development is drastically reduced. At the same time incorporating computer‐aided process planning into the system gives the designer a better understanding of the cost implications of the modified design with respect to manufacturing. The major challenge in implementing of such system is that any changes in the manufacturing facility have to be incorporated in the process plans stored. This can be a tedious job but can be overcome by using hybrid process planning approach instead of variant based approach.

Research limitations/implications

The proposed template systems can be further developed to be considered as infrastructure necessary for design within a collaborative engineering environment. Further research and development is necessary for implementation. Though, the result from this case is promising.

Originality/value

The paper proposes the structure necessary for the implementation of a template‐based system. The approach used in the development of the integrated systems could be used by small and mid segment industries which do not have enough resources for costly software upgrading and complex computer technologies. By using templates, the time required for new product development is drastically reduced.

Details

Journal of Manufacturing Technology Management, vol. 17 no. 5
Type: Research Article
ISSN: 1741-038X

Keywords

Access Restricted. View access options
Article
Publication date: 17 November 2021

Zhoupeng Han, Chenkai Tian, Zihan Zhou and Qilong Yuan

Complex mechanical 3D computer-aided design (CAD) model embodies rich implicit design knowledge. Through discovering the key function parts and key function module in 3D CAD…

233

Abstract

Purpose

Complex mechanical 3D computer-aided design (CAD) model embodies rich implicit design knowledge. Through discovering the key function parts and key function module in 3D CAD assembly model in advance, it can promote the designers’ understanding and reuse efficiency of 3D assembly model in design reuse.

Design/methodology/approach

An approach for discovering key function module in complex mechanical 3D CAD assembly model is proposed. First, assembly network for 3D CAD assembly model is constructed, where the topology structure characteristics of 3D assembly model are analyzed based on complex network centrality. The degree centrality, closeness centrality, betweenness centrality and mutual information of node are used to evaluate the importance of the parts in 3D assembly model. Then, a multi-attribute decision model for part-node importance is established, and the comprehensive evaluation for key function parts in 3D assembly model is accomplished by combining Analytic Hierarchy Process and Technique for Order Preference by Similarity to an Ideal Solution (TOPSIS). Subsequently, a community discovery of function module in assembly model-based Clauset–Newman–Moore (CNM)-Centrality is given in details. Finally, 3D CAD assembly model of worm gear reducer is taken as an example to verify the effectiveness and feasibility of proposed method.

Findings

The key function part in CAD assembly model is evaluated comprehensively considering assembly topology more objectively. In addition, the key function module containing key function part is discovered from CAD assembly model by using CNM-Centrality-based community discovery.

Practical implications

The approach can be used for discovering important design knowledge from complex CAD assembly model when reusing the assembly model. It can help designers capture and understand the design thinking and intent, improve the reuse efficiency and quality.

Originality/value

The paper first proposes an approach for discovering key function module in complex mechanical 3D CAD assembly model taking advantage of complex network theory, where the key function part is evaluated using node centrality and TOPSIS, and the key function module is identified based on community discovery.

Details

Assembly Automation, vol. 42 no. 1
Type: Research Article
ISSN: 0144-5154

Keywords

Access Restricted. View access options
Article
Publication date: 10 July 2009

S. Vinodh, G. Sundararaj, S.R. Devadasan, D. Kuttalingam, J. Jayaprakasam and D. Rajanayagam

Agile manufacturing (AM) refers to the capability of an organisation to quickly respond to the customers' dynamic demands. The purpose of this paper is to report a research which…

1322

Abstract

Purpose

Agile manufacturing (AM) refers to the capability of an organisation to quickly respond to the customers' dynamic demands. The purpose of this paper is to report a research which is carried out to explore the interfacing of computer aided design/computer aided manufacturing (CAD/CAM) in a traditional manufacturing company with the purpose of acquiring AM characteristics.

Design/methodology/approach

The CAD model of an existing electronics switch is developed using Pro/E package. Then, the mold adviser package is used to design the existing mold of this component. On studying this mold, ten new models of it are designed using the mold adviser package.

Findings

The new models developed through CAD/CAM interfacing are found to possess more agile characteristics than those possess by the existing mold.

Research limitations/implications

The explorative study is conducted in only one traditional manufacturing company. In this company several world class manufacturing strategies like kaizen and total productive maintenance are implemented. This endeavour mimics those pursue in majority of the companies situated in different parts of the world. This implies that the contributions of this research would be useful to majority of those companies as well.

Practical implications

A roadmap is developed which will be useful for practically applying CAD/CAM interfacing with the objective of implementing AM.

Originality/value

It appears that no researcher has examined the interfacing of CAD/CAM for achieving agility in manufacturing organisations. This paper reports a research, which is conducted to fill this research and practice gap. Hence, this research is original and valuable to both researchers and practitioners.

Details

Journal of Engineering, Design and Technology, vol. 7 no. 2
Type: Research Article
ISSN: 1726-0531

Keywords

Access Restricted. View access options
Article
Publication date: 1 September 2003

Paul G. Ranky

There are many methods and solutions to improve any process, and stay within the established control limits. Statistically analyzed data, received from inspection sensors and…

1042

Abstract

There are many methods and solutions to improve any process, and stay within the established control limits. Statistically analyzed data, received from inspection sensors and other devices, are one of them. Automated inspection sensors and systems are effective tools for controlling variation and obtaining process related knowledge. Automated inspection methods, discussed in this paper, represent an important, nevertheless not the only methods, that lead to process improvement, the ultimate goal of total quality management and control (TQM/TQC). Inspection, as part of the feedback control loop of the overall TQM/TQC process, involves the continual satisfaction of customer requirements at lowest cost by harnessing the efforts of everybody in the company. The key question in any inspection system is as follows: Are the measured values within tolerance, or not, and if they are outside the tolerance limits, why did we produce those parts in the first place?

Details

Assembly Automation, vol. 23 no. 3
Type: Research Article
ISSN: 0144-5154

Keywords

Access Restricted. View access options
Article
Publication date: 30 July 2024

Babak Javadi and Mahla Yadegari

This paper aims to deal with intra and inter-cell layout problems in cellular manufacturing systems. The model is organized to minimize the total handling cost, i.e. intra and…

18

Abstract

Purpose

This paper aims to deal with intra and inter-cell layout problems in cellular manufacturing systems. The model is organized to minimize the total handling cost, i.e. intra and inter-cell handling costs in a continuous environment.

Design/methodology/approach

The research was conducted by developing a mixed integer mathematical model. Due to the complexity and NP-hard nature of the cellular manufacturing layout problem, which mostly originated from binary variables, a “graph-pair” representation is used for every machine set and cells each of which manipulates the relative locations of the machines and cells both in left-right and below-up direction. This approach results in a linear model as the binary variables are eliminated and the relative locations of the machines and cells are determined. Moreover, a genetic algorithm as an efficient meta-heuristic algorithm is embedded in the resulting linear programming model after graph-pair construction.

Findings

Various numerical examples in both small and large sizes are implemented to verify the efficiency of the linear programming embedded genetic algorithm.

Originality/value

Considering the machine and cell layout problem simultaneously within the shop floor under a static environment enabled managers to use this concept to develop the models with high efficiency.

Details

Journal of Modelling in Management, vol. 20 no. 1
Type: Research Article
ISSN: 1746-5664

Keywords

Access Restricted. View access options
Article
Publication date: 18 July 2023

Panniphat Atcha, Ilias Vlachos and Satish Kumar

Ineffective management inventory of medical products such as blood and vaccines can create severe repercussions for hospitals, clinics or medical enterprises, such as surgery…

708

Abstract

Purpose

Ineffective management inventory of medical products such as blood and vaccines can create severe repercussions for hospitals, clinics or medical enterprises, such as surgery delays and postponements. Inventory sharing is a form of horizontal collaboration that can provide solutions to key actors of the healthcare supply chain (HSC), yet no prior study reviewed this topic.

Design/methodology/approach

This study conducts a systematic literature review of thirty-nine inventory-sharing studies in the context of HSCs published from 2012 until early 2022. The descriptive and thematic analyses include chronological distribution, geographical location, comparison between developed/developing regions, stakeholder and incident analysis.

Findings

Thematic analysis classified inventory sharing among five product supply chains (blood, medical supplies, medicines, vaccines and generic medical products). Benefits include shortage reduction, cost minimisation, and wastage mitigation. Barriers include (1) IT infrastructure, (2) social systems, (3) cost and (4) supply chain operations. Perishable inventory policies include Fresher-First (FF), Last-Expire-First-Out (LEFO), First-In-First-Out (FIFO) and First-Expire-First-Out (FEFO). The analysis also showed differences between developed and developing countries. The study identifies several future research opportunities that include (1) product utilisation rate, (2) cost reductions, (3) shortage mitigation and (4) waste reduction.

Originality/value

No prior study has systematically reviewed inventory sharing in HSCs to reveal benefits, barriers, patterns and gaps in the current literature. It makes five propositions and develops a research model to guide future research. The study concludes with theoretical and managerial implications.

Details

The International Journal of Logistics Management, vol. 35 no. 4
Type: Research Article
ISSN: 0957-4093

Keywords

Access Restricted. View access options
Article
Publication date: 19 July 2022

Kalyani Mulchandani and Ketan Mulchandani

This study investigates the moderating role of Big-4 audit firms on the association between board independence and classification shifting (CS) in Indian firms.

275

Abstract

Purpose

This study investigates the moderating role of Big-4 audit firms on the association between board independence and classification shifting (CS) in Indian firms.

Design/methodology/approach

This study has employed a fixed-effect panel data regression model to analyze the sample data. Board independence is measured by taking the proportion of independent directors on a firm’s board. CS is measured from the core earnings expectation model (McVay, 2006). Principal Score Matching is applied to validate the results.

Findings

Based on 6,016 firm-year observations of Indian firms listed on the Bombay Stock Exchange, results show that firms with a higher proportion of independent directors on board are effective in limiting expense CS. Further, firms that Big-4 audit firms audit play a significant role in curbing expense CS. Overall, results also exhibit that Big-4 audit firms significantly influence the association between board independence and CS.

Originality/value

This study is one of its kind to examine the moderating role of Big-4 audit firms between board independence and CS.

Access Restricted. View access options
Article
Publication date: 1 January 2006

Saptarshi Ghosh and Mahmood Bagheri

The purposes in this paper are: engaging in a critical examination of the framework of the banking regulatory framework in India; assessing the operational efficacy of banking…

2115

Abstract

Purpose

The purposes in this paper are: engaging in a critical examination of the framework of the banking regulatory framework in India; assessing the operational efficacy of banking regulatory and supervisory mechanisms; and providing an in‐depth legal analysis of the role of the Reserve Bank of India (RBI) as the country's central bank and the principal supervisory authority.

Design/methodology/approach

The method used is legal examination of regulatory practice and case‐study based analysis. It relies factually on official publications in the public domain, academic writings and newspaper reports to assess the impact of the fraud and explore the legal, regulatory and financial implications of the supervisory lapses.

Findings

The findings in the paper relate to the impact and extent of he Ketan Parekh fraud and the nature and scope of critical central banking supervision lapses. The paper concludes that such lapses can induce systemic problems in a key emerging economy like India especially when it is rapidly entering the second phase of major banking and financial reforms.

Research limitations/implications

Various investigations are still underway as regards the Ketan Parekh fraud and several cases are being heard in courts and tribunals. The full extent of legal and regulatory liability is yet to be fully ascertained.

Originality/value

It is of immense significance to bankers, lawyers, auditors, consultants, researchers, jurists, law enforcement officials and those involved in financial and banking regulation.

Details

Journal of Financial Crime, vol. 13 no. 1
Type: Research Article
ISSN: 1359-0790

Keywords

1 – 10 of 74
Per page
102050