Sequential process planning: A hybrid optimal macro-level approach

Azab, Ahmed; ElMaraghy, Hoda A.

doi:10.1016/j.jmsy.2008.03.003

Cited by 27 publications

(12 citation statements)

References 20 publications

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“…Targeted features of the design review package have shown that the project manager has not "designed in parallel" (Ortega-Arjona, 2010) and used a "Sequential Planning process" (Azab and ElMaraghy, 2007) and as a consequence leave the timeline spread out unequivocally with missed deadlines. Further, the design managers do not show that they know how to plan the design and review of a technical design (Wiggins and McTighe, 2005) or provide an opportunity to identify sensitivity criteria for performance evaluation.…”

Section: Increased Management Training Needsmentioning

confidence: 99%

Management Practices in a Formal Design Process for a Metro Project in Doha, Qatar

James

2015

jmr

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This is a research paper focused on assessing the design project manager behaviour and the raised managerial design issues relating to a formal design review in a metro project start-up. Very little research has been conducted in this area and the paper exposes weak aspects of the design review process previously unexplored in today's metro construction environments.In order to consider more implicitly the questions and issues raised, this empirical groundwork utilised an interpretive perspective. The scope for this research was the design mechanisms/processes associated with a large single package -a TBM Segment Design. The population for this study was made up of a number of individuals (12) engineers/Managers located at site, and a total of 9 Engineers/Managers were determined as the resultant sample frame.The outcomes consisted of six (6) themes, namely: Mismanagement Issues; Management Interference; Technical Issues; Contractor Design managers Issues; Documentation Issues; Communication Issues, raised from an initial question; these were further developed into four (4) final themes relating to an assessment of the managerial implications.The paper gives a clear insight into the practical issues surrounding a metro design review and the development of appropriate managerial strategies that can be implemented. The paper also addresses some of the implications for continuing design review developments. The paper suggests that projects of this kind may benefit from an Integrated Collaborative Design approach through integrating construction expertise with the design process at the detail design phase.

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Section: Increased Management Training Needsmentioning

confidence: 99%

Management Practices in a Formal Design Process for a Metro Project in Doha, Qatar

James

2015

jmr

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“…Typically, process planning has two distinct levels, one is macro level and another is micro level (Azab and Elmaraghy 2007). At the macro level, planning is concerned with identifying the main tasks and their best sequence and the type of manufacturing processes.…”

Section: Processes Of Rib Machiningmentioning

confidence: 99%

Definition and recognition of rib features in aircraft structural part

Wang

Liu

et al. 2013

International Journal of Computer Integrated Manufacturing

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In this research, a new type of manufacturing feature that is commonly observed in aircraft structural parts, known as ribs, is defined and implemented using the object-oriented software engineering approach. The rib feature type is defined as a set of constrained and adjacent faces of a part which are associated with a set of specific rib machining operations. Computerized numerical control (CNC) operation experience and the machining knowledge are leveraged by analysing typical geometry interactions when generating machining tool paths where such knowledge and experience are abstracted as rules of process planning. Then those abstracted machining process rules are implemented in a feature recognition algorithm on top of an existing and holistic attribute adjacency graph solution to extract seed faces, identify individual local rib elements and further cluster these newly identified local rib elements into groups for the ease of machining operations. Out of the potentially different combinations of local rib elements, those optimised cluster groups are merged into the top-level rib features. The enhanced recognition algorithm is presented in details. A pilot system has already been developed and applied for machining many advanced aircraft structural parts in a large aircraft manufacturer. Observations and conclusions are presented at the end.

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“…If there is any change in the product, the corresponding change in mould cavity features to produce the new product will be identified. Then the reconfigurable process planning technique proposed by Azab and ElMaraghy [10] can be applied. By this technique the master plan of the initial part family is first retrieved, and then this is followed by the manipulation of feature precedent graph (FPG) and their associated structures.…”

Section: Realisation Of the Principles Of Reconfigurability In The Prmentioning

confidence: 99%

Reconfigurability Approach in Manufacture of Moulds and Dies

Oke

Abou-El-Hossein

Theron

2011

AMR

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Manufacturing of moulds and dies based on the rigid and traditional arrangement of dedicated workstations in a production system can no more stand the test of time. The dynamic and competitive nature of the market is compelling managements in the industry to look for a manufacturing system that (1) will ensure high quality product, (2) will pave way for a quick changeover to a new setup to be able to accommodate the new products, (3) will ensures short lead times in product/process changeover, and (4) that will make its product come out at a relatively low cost. An emerging strategy that might enable industries to cope with the rapidly changing product specifications is based on reconfiguring the manufacturing systems. A manufacturing strategy that is based on reconfiguration of the manufacturing systems may help accommodate emergent product changes in short periods at the lowest possible costs by combining certain levels of flexibility and customised automation. In this paper the principles of reconfigurability is being considered for mould and die making industry.

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Sequential process planning: A hybrid optimal macro-level approach

Cited by 27 publications

References 20 publications

Management Practices in a Formal Design Process for a Metro Project in Doha, Qatar

Management Practices in a Formal Design Process for a Metro Project in Doha, Qatar

Definition and recognition of rib features in aircraft structural part

Reconfigurability Approach in Manufacture of Moulds and Dies

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