Generic Modular Operations for Virtual Manufacturing Process Engineering

1997 ◽  
Author(s):  
David E. Lee ◽  
H. Thomas Hahn
Keyword(s):  
Manufacturing Process ◽  
Process Development ◽  
Process Engineering ◽  
Virtual Manufacturing ◽  
Control Approach ◽  
Computational Costs ◽  
Direct Mechanism ◽  
Novel Approach ◽  
Operation Control ◽  
Virtual Process

Abstract In order to address the computational costs of modeling and analyzing manufacturing processes, a novel approach to virtual manufacturing process engineering using generic modular operations is presented. Relying on a state based representation of operation control for a simplified virtual manufacturing workcell, the valid states for each sequence of generic modular operations are aggregated and both operation state and processing constraints applied to specify the subtasks required to complete each step in a product’s process plan. By adopting this state based control approach, virtual process engineering provides a direct mechanism to map virtual process representations onto actualized processes. Using these generic modular operations and their temporal and processing dependencies, the computationally complex elements of virtual manufacturing process simulation can be directly identified and an architecture for virtual process development specified. Examples from both machining and assembly processes are provided.

A Temporal Process Specification Language for Virtual Manufacturing Engineering

1998 ◽  
Author(s):  
David E. Lee ◽  
H. Thomas Hahn
Keyword(s):  
Manufacturing Process ◽  
Specification Language ◽  
Virtual Manufacturing ◽  
Process Definition ◽  
Virtual Factory ◽  
Process Specification ◽  
Temporal Relationships ◽  
Temporal Process ◽  
Definition Of ◽  
Virtual Process

Abstract A process specification language is being developed for virtual manufacturing that provides a structured portable definition of a given manufacturing process as well as the ability to specify the temporal relationships between individual operation steps that compose a process. Based on the concepts embodied in markup languages such as HTML, SGML and XML, a portable process definition structure is defined. This structure provides a template from which virtual process specifications can be created. Subsequently, these structures can be exchanged between development environments for virtual process engineering and the actualized manufacturing facilities where processes are implemented. In addition, dependencies in time between the operation steps of a process such as common start times and operation serialization can be represented to allow for a complete specification of temporal behavior of a given manufacturing process. By providing this explicit mechanism for representing temporal constraints, a virtual manufacturing process can be viewed and utilized both in a localized application on a single virtual factory floor as well as distributed across multiple, interlinked virtual environments.

scholarly journals Upscale Design, Process Development, and Economic Analysis of Industrial Plants for Nanomagnetic Particle Production for Environmental and Biomedical Use

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2477
Author(s):  
Paulo A. Augusto ◽  
Teresa Castelo-Grande ◽  
Diana Vargas ◽  
Alvaro Pascual ◽  
Lorenzo Hernández ◽  
...  
Keyword(s):  
Economic Analysis ◽  
Manufacturing Process ◽  
Magnetic Particles ◽  
Particle Production ◽  
Process Development ◽  
Scale Up ◽  
Production Capacity ◽  
Process Engineering ◽  
Market Demand ◽  
Industrial Plants

Very few economical and process engineering studies have been made concerning the scale-up and implementation of nanomagnetic particle manufacturing into a full-scale plant, and determination of its viability. In this work we describe such a study for two types of industrial plants, one for manufacturing magnetic particles for applications in the environmental area, and the other for manufacturing nanomagnetic particles for applications in the biotechnology area; the two different applications are compared. The following methodology was followed: establish the manufacturing process for each application; determine the market demand of the product (magnetic nanoparticles) for both applications; determine the production capacity of each plant; engineer all the manufacturing process, determining all the process units and performing all the mass and energy balances for both plants; scale-up the main equipment; and determine the global economic impact and profitability. At the end both plants are found to be technologically and economically viable, the characteristics of the final products being, however, quite different, as well as the process engineering, economic analysis, and scale-up.

Manufacturing Process Development for Thin Film Filaments as a New Product

2020 ◽  
pp. 513-522
Author(s):  
Bahadır Tunaboylu ◽  
Biset Toprak ◽  
Ahmet Korhan Binark ◽  
Osman Öztürk ◽  
Selim Zaim
Keyword(s):  
Thin Film ◽  
Manufacturing Process ◽  
Process Development ◽  
New Product

Virtual Assembly Production Analysis of Composite Aircraft Structures

1995 ◽  
Author(s):  
David E. Lee ◽  
H. Thomas Hahn
Keyword(s):  
Manufacturing Process ◽  
Context Effects ◽  
Virtual Assembly ◽  
Virtual Manufacturing ◽  
Production Costs ◽  
Process Conditions ◽  
Aircraft Structures ◽  
Production Analysis ◽  
The Impact ◽  
Assembly Production

Abstract Concurrent with the use of tailored materials for specific applications has been the understanding that a product’s design has a significant and measurable effect on manufacturing process cycle times and unit production costs. In order to reliably manufacture and assemble aircraft structures fabricated from composite materials on a cost-effective basis, an environment for virtual assembly production analysis is being developed. Within this environment, members of an aircraft’s integrated product development team can rapidly assess the impact of design decisions on individual assembly operations and overall aircraft assembly in a virtual manufacturing context. Effects related to joint design and component matings are measured based on force and process conditions as well as the types of tooling required for final assembly. By evaluating assembly production impacts early during product design, the costly design-manufacture-redesign cycle is redefined and recast based on the realities of manufacturing process constraints.

Perspectives: Meso-Science and Virtual Process Engineering

2013 ◽  
pp. 461-476 ◽  
Author(s):  
Jinghai Li ◽  
Wei Ge ◽  
Wei Wang ◽  
Ning Yang ◽  
Xinhua Liu ◽  
...  
Keyword(s):  
Process Engineering ◽  
Virtual Process

Manufacturing Task Process Characterization Utilizing Response Surface Methodology

2012 ◽  
Vol 3 (2) ◽  
pp. 62-77
Author(s):  
Janet H. Sanders ◽  
Silvanus J. Udoka
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Process Development ◽  
High Strength ◽  
Business Culture ◽  
Process Characterization ◽  
Novel Approach ◽  
High Strength Fiber ◽  
Rapid Deployment ◽  
Operating Window

To meet today’s business culture of rapid deployment of new products and processes, engineering and manufacturing personnel must utilize efficient means for process development. This paper discusses a novel approach to characterize a task driven manufacturing process. The approach utilized Response Surface Methodology (RSM) to investigate, identify, and prioritize the key process drivers and subsequently develop quantifiable methods for setting the operating levels for the process drivers to determine if the current levels of these key process drivers result in a process response value that is near optimum. The approach identifies the improved response region, generates a mathematical model of the process and specifies an operating window that would yield consistent results for each of the process drivers. A High Strength Fiber Splicing process was used to demonstrate this approach. This study led to the identification of the region that improved the process yield from 65% to 85%.

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