Showing papers on "Production engineering published in 1977"
TL;DR: In this article, the survey results from a study pertaining to the use of quantitative techniques in production and operations management were discussed and over 60% of the respondents said they did not use qua...
Abstract: The article discusses the survey results from a study pertaining to the use of quantitative techniques in production and operations management. Over 60% of the respondents said they did not use qua...
55 citations
01 Nov 1977
TL;DR: In this article, a computerized production process planning system for machined cylindrical parts was demonstrated, where a man-machine communications interface allowed human oversight/modification of process plan development.
Abstract: : A computerized production process planning system was demonstrated. The system performs generative process planning for machined cylindrical parts. Manufacturer-independence is achieved by using process decision models that express local manufacturing practice. A man-machine communications interface permits human oversight/modification of process plan development. Industry surveys were conducted to collect data relevant to the benefits of computerized process planning. Results of the surveys are summarized. Cash flow analyses estimating cost savings to industry are presented. Benefits of the demonstration system in defense procurement are projected. (Author)
18 citations
01 Jul 1977
TL;DR: In this article, a dynamic programming algorithm for the generation of columns is developed, and the problem of computing optimal lot sizes in multi-stage systems is addressed and solved, since exact solution procedures are either very expensive or computationally infeasible.
Abstract: : The multi-stage production system is viewed as a production process in which component parts have to be obtained by manufacturing or by purchasing then assembled into subassemblies, assemblies, and finally into the finished good. At the aggregate level a new formulation for the aggregate planning model is given, in order to bring computational feasibility to situations in which older formulations went beyond the capabilities of current linear programming codes. The resulting aggregate model is a large scale system that lends itself to solution by column generation. A dynamic programming algorithm for the generation of columns is developed. Next, at the disaggregation level, the problem of computing optimal lot sizes in multi-stage systems is addressed and solved. Since exact solution procedures are found to be either very expensive or computationally infeasible, a heuristic approach is adopted and results are reported. For more complex situations, in which parts are common to several end products or where there is independent demand for parts, even the heuristics become infeasible; therefore it is suggested that myopic lot sizing policies be used.
7 citations
TL;DR: Over recent decades, there has been an enormous expansion in the amount and complexity of scientific and engineering knowledge, and the engineering graduate must know the timeless basics as always.
Abstract: Over recent decades, there has been an enormous expansion in the amount and complexity of scientific and engineering knowledge. Space exploration was climaxed by landing on the moon; solid state electronics has had significant impact in computers, controls, and a myriad of other devices; and nuclear fission is being used for the generation of significant quantities of electrical power. Besides learning about these expanded areas of knowledge, the engineering graduate must know the timeless basics as always. Also, it has become apparent that the public, with the increased complexity of our society, is asking that engineering solutions be related to society goals.
4 citations
TL;DR: The industrial engineer has armed himself with a bulging bag of sophisticated tools permitting him to go beyond his traditional activities, and the opportunity to contribute to the growth of productivity in this country should continue to expand.
3 citations
Journal Article•
TL;DR: In this paper, an assessment of potential changes and alternative technologies which could impact the photovoltaic manufacturing process is presented, including a multiple wire saw, ribbon growth techniques, silicon casting, and a computer model for a large-scale solar power plant.
Abstract: An assessment of potential changes and alternative technologies which could impact the photovoltaic manufacturing process is presented. Topics discussed include: a multiple wire saw, ribbon growth techniques, silicon casting, and a computer model for a large-scale solar power plant. Emphasis is placed on reducing the energy demands of the manufacturing process.
3 citations
01 Dec 1977
TL;DR: In this article, a general technology assessment and manufacturing cost analysis was presented, and a near-term (1982) factory design was described, and the results of an experimental production study for the large-scale production of flat-panel silicon and solar-cell arrays were detailed.
Abstract: A general technology assessment and manufacturing cost analysis was presented. A near-term (1982) factory design is described, and the results of an experimental production study for the large-scale production of flat-panel silicon and solar-cell arrays are detailed.
2 citations
01 Mar 1977
TL;DR: In this article, the conceptual design of a four-place single turbofan engine powered light aircraft was accomplished utilizing contemporary light aircraft conventional design techniques as a means of evaluating the NASA-Ames General Aviation Synthesis Program (GASP) as a preliminary design tool.
Abstract: The conceptual design of a four place single turbofan engine powered light aircraft was accomplished utilizing contemporary light aircraft conventional design techniques as a means of evaluating the NASA-Ames General Aviation Synthesis Program (GASP) as a preliminary design tool. In certain areas, disagreement or exclusion were found to exist between the results of the conventional design and GASP processes. Detail discussion of these points along with the associated contemporary design methodology are presented.
2 citations
01 Jan 1977
TL;DR: In this paper, manufacturing methods and technology to establish production techniques for fabrication of stretched, oriented, polypropylene film armor that is both RF transparent and fragment resistant are developed for use in production facilities with mass production equipment.
Abstract: : Manufacturing methods and technology to establish production techniques for fabrication of stretched, oriented, polypropylene film armor that is both RF transparent and fragment resistant are to be developed. Prototype processing technology and evaluation procedures developed by the Army Materials and Mechanics Research Center are to be revised for use in production facilities with mass production equipment. Radome panels are to be constructed to demonstrate the mass production capabilities, confirm production rates, and establish mass production plans to meet estimated military needs. The project is to consist of preliminary sample panel fabrication to confirm physical and electrical characteristics, a pilot production run to confirm production rates, and an in-plant demonstration of production capabilities. Reports are to be provided on all phases of production development through the pilot run. In addition, production studies and planning necessary for expansion to a mass production basis are to be provided.
04 Oct 1977
TL;DR: In this article, a target production concept for the production of multilayered cryogenic spherical inertial confinement fusion targets is described, and the facility is able to deliver targets to the reactor chamber at rates up to 10 per second and at costs consistent with economic production of power.
Abstract: A target production concept is described for the production of multilayered cryogenic spherical inertial confinement fusion targets The facility is to deliver targets to the reactor chamber at rates up to 10 per second and at costs consistent with economic production of power