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Articles 91 - 106 of 106
Full-Text Articles in Engineering
The Use Of Rfid In Manufacturing And Packaging Technology Laboratories, Manocher Djassemi, Jay Singh
The Use Of Rfid In Manufacturing And Packaging Technology Laboratories, Manocher Djassemi, Jay Singh
Industrial Technology and Packaging
Mandated use of Radio Frequency Identification (RFID) on goods at pallet, case and item level continues to churn the Consumer Product Goods (CPG), logistics and retail industry. The statement “Internet of things” is slowly becoming true; with concerted efforts from standard setting bodies such as Electronic Product Code (EPC) global, International Standards Organization (ISO), Fast Moving Consumer Goods (FMCG) companies like Gillette, P&G and major retailers like Wal-Mart, TESCO, and the US DoD, to replace barcodes with RFID tags. RFID bridges many areas of manufacturing including inventory management, assembly operation, material handling, packaging and shipping by providing an accurate and …
A Simulation Analysis Of Factors Influencing The Flexibility Of Cellular Manufacturing, Manocher Djassemi
A Simulation Analysis Of Factors Influencing The Flexibility Of Cellular Manufacturing, Manocher Djassemi
Industrial Technology and Packaging
The performance of cellular manufacturing (CM) systems in a variable demand and flexible workforce environment has been examined using simulation modelling. Discrepancies between academicians and practitioners' findings with respect to flexibility and uneven machine utilization in CM systems are discussed. The views of two parties were incorporated in simulation models to rectify the existing discrepancies. While the results of this study confirm the previous findings of academicians regarding the deterioration of the performance of CM in a variable product mix situation, it appears that those results may be significantly influenced by considering a flexible workforce. The simulation results show that …
Package Performance Testing Of Dangerous Goods In High Altitude Shipments, S. Paul Singh, Gary J. Burgess, Jay A. Singh
Package Performance Testing Of Dangerous Goods In High Altitude Shipments, S. Paul Singh, Gary J. Burgess, Jay A. Singh
Industrial Technology and Packaging
This paper discusses the impact of high altitude shipments on package integrity. High altitude shipments are encountered when trucks travel over high mountain passes or when cargo and feeder aircraft transport packages in non-pressurized or partially-pressurized cargo holds. Both these types of transport methods will result in severe changes in pressure and temperature conditions as compared to packages being transported close to sea-level The testing of packages under these conditions is critical since package integrity may be compromised. The current shipping tests performed in test labs do not account for pressure changes and vibration together. This study showed that combination …
The Effect Of Reliability Consideration On The Application Of Quality Index, Hamid Seifoddini, Manocher Djassemi
The Effect Of Reliability Consideration On The Application Of Quality Index, Hamid Seifoddini, Manocher Djassemi
Industrial Technology and Packaging
Quality index (QI) has been proposed as a screening mechanism for machine-part matrices in the development of cellular manufacturing systems. In this paper the effect of reliability consideration on the application of QI and the relative sensitivity of job shop and cellular manufacturing systems to reliability changes are evaluated by simulation modeling. Performance measures such as mean flow time and work-in-process inventories are used in the comparative study of job shop and cellular manufacturing.
An Efficient Cnc Programming Approach Based On Group Technology, Manocher Djassemi
An Efficient Cnc Programming Approach Based On Group Technology, Manocher Djassemi
Industrial Technology and Packaging
Many studies and reports support the significant impact of the application of group technology on various aspects of product design and manufacturing. The fact that group technology is the common solution to similar problems is the main source of such impact. In this paper, one of the less frequently utilized features of CNC technology known as parametric part programming is used to implement the common solution feature of group technology in processing a set of similar parts. Using three part families, the advantages of blending the concept of group technology and parametric programming for CNC machining operations are illustrated. The …
A Parametric Programming Technique For Efficient Cnc Machining Operations, Manocher Djassemi
A Parametric Programming Technique For Efficient Cnc Machining Operations, Manocher Djassemi
Industrial Technology and Packaging
In this paper the application of parametric programming to CNC machining is discussed. As one of the less frequently utilized features of CNC machines, parametric programming has the potential to increase the efficiency of CNC operations. This feature is particularly beneficial to companies with group technology manufacturing where parts with similar design or operational requirements are processed within a machine cell. Using two case studies, the capabilities of parametric programming for CNC machines are illustrated.
Determination Of A Flexibility Range For Cellular Manufacturing Systems Under Product Mix Variations, Hamid Seifoddini, Manocher Djassemi
Determination Of A Flexibility Range For Cellular Manufacturing Systems Under Product Mix Variations, Hamid Seifoddini, Manocher Djassemi
Industrial Technology and Packaging
One of the underlying assumptions in cellular manufacturing is that product mix is relatively stable over time. In this paper, a procedure for the sensitivity analysis of the performance of a cellular manufacturing system with respect to changes in the product mix is presented and a flexibility range representing the capability of the system in dealing with these changes is determined using simulation modelling. The simulation results in this study show that as the changes in the product mix increase the superiority of the performance of the cellular manufacturing system to the corresponding job shop system diminishes.
The Threshold Value Of A Quality Index For Formation Of Cellular Manufacturing Systems, Hamid Seifoddini, Manocher Djassemi
The Threshold Value Of A Quality Index For Formation Of Cellular Manufacturing Systems, Hamid Seifoddini, Manocher Djassemi
Industrial Technology and Packaging
The superiority of cellular manufacturing to job shop manufacturing has been questioned by a number of simulation studies. The initial structure of the machine-part matrix seems to play an important role in the failure of cellular manufacturing systems in these studies. In this paper a grouping measure called 'quality index - QI' will be used to evaluate the relationship between the quality of a machine-part matrix and the performance of the corresponding cellular manufacturing system. A simulation study will be conducted to demonstrate how the procedure can be used to determine the threshold value for QI beyond which the cellular …
Sensitivity Analysis In Cellular Manufacturing System In The Case Of Product Mix Variation, Hamid Seifoddini, Manocher Djassemi
Sensitivity Analysis In Cellular Manufacturing System In The Case Of Product Mix Variation, Hamid Seifoddini, Manocher Djassemi
Industrial Technology and Packaging
In this paper, performance measures such as mean flow time and work-in-process inventories will be used to determine the changes in the performance of a cellular manufacturing system due to product mix variations.
Improving The Performance Of Cellular Manufacturing By A Dynamic Part Assignment Approach, Hamid Seifoddini, Manocher Djassemi
Improving The Performance Of Cellular Manufacturing By A Dynamic Part Assignment Approach, Hamid Seifoddini, Manocher Djassemi
Industrial Technology and Packaging
In this paper, a simple dynamic part assignment (DPA) procedure is introduced and its effects on the performance of cellular manufacturing systems is evaluated. In this procedure rerouting of parts among machine cells is allowed for better machine utilization. Three data sets are used to compare the performance of manufacturing systems under job shop and cellular manufacturing when DPA is employed. The results of simulation runs indicate that the proposed DPA method improves the performance of cellular manufacturing significantly by reducing the congestion in machine cells with long waiting lines.
A New Grouping Measure For Evaluation Of Machine-Component Matrices, Hamid Seifoddini, Manocher Djassemi
A New Grouping Measure For Evaluation Of Machine-Component Matrices, Hamid Seifoddini, Manocher Djassemi
Industrial Technology and Packaging
The machine-component matrix is the main input to most machine-component grouping models used in cellular manufacturing. A number of measures have been developed for performance evaluation of machine-component grouping algorithms. In this paper, the relationship between these measures and the performance of the corresponding cellular manufacturing system is evaluated and a new grouping measure is developed which is more consistent in predicting the suitability of a manufacturing system for cellular manufacturing.
A Simulation Study Of Quality Index In Machine-Component Grouping, Hamid Seifoddini, Manocher Djassemi
A Simulation Study Of Quality Index In Machine-Component Grouping, Hamid Seifoddini, Manocher Djassemi
Industrial Technology and Packaging
Simulation modeling is employed to determine the effectiveness of quality index in screening machine-part matrices for the development of cellular manufacturing systems.
Merits Of The Production Volume Based Similarity Coefficient In Machine Cell Formation, Hamid Seifoddini, Manocher Djassemi
Merits Of The Production Volume Based Similarity Coefficient In Machine Cell Formation, Hamid Seifoddini, Manocher Djassemi
Industrial Technology and Packaging
In this paper, two types of similarity coefficients are compared: (1) the Jaccard's coefficient and (2) the production volume based coefficient. Each is used to form a cellular manufacturing system whose performance will be used as a measure of effectiveness of the similarity coefficient. The sum of intercellular and intracellular material handling costs is used as a criterion for performance evaluation.
Analysis Of Efficiency Measures For Block Diagonal Machine-Component Charts, Hamid Seifoddini, Manocher Djassemi
Analysis Of Efficiency Measures For Block Diagonal Machine-Component Charts, Hamid Seifoddini, Manocher Djassemi
Industrial Technology and Packaging
Group efficiency measures have been developed to evaluate machine-component charts for the formation of cellular manufacturing systems. In this paper the existing grouping efficiency measures will be evaluated by determining the relationship between the values of a grouping efficiency measure and the performance of the corresponding cellular manufacturing system.
A Dynamic Part Assignment Procedure In Machine Cell Formation, Hamid Seifoddini, Manocher Djassemi
A Dynamic Part Assignment Procedure In Machine Cell Formation, Hamid Seifoddini, Manocher Djassemi
Industrial Technology and Packaging
A major contributing factor to the under utilization of machines in cellular manufacturing is the development of long queues in front of some machines in machine cells. This paper presents a procedure which identifies such machines and redistributes their loads to alternative machines whenever feasible.
The Production Data-Based Similarity Coefficient Versus Jaccard's Similarity Coefficient, Hamid Seifoddini, Manocher Djassemi
The Production Data-Based Similarity Coefficient Versus Jaccard's Similarity Coefficient, Hamid Seifoddini, Manocher Djassemi
Industrial Technology and Packaging
This paper compares the performance of Jaccard's similarity coefficient with the production data-based similarity coefficient. A number of machine-component charts taken from the literature or randomly generated are used to form machine-component groups. Then, the sum of intercellular and intracellular material handling costs for each machine-component group is calculated and used as a basis for performance evaluation of the two similarity coefficients.