This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Predicting Product Manufacturing Costs from Design Attributes: A Complexity Theory Approach
Annotation ability available
Sector:
Language:
English
Abstract
This paper contains both theorems and correlations based on the idea that there is a uniform metric for measuring the complexity of mechanical parts. The metric proposed is the logarithm of dimension divided by tolerance. The theorems prove that, on the average, for a given manufacturing process, the time to fabricate is simply proportional to this metric. We show corrleations for manual turning (machine lathe process), manual milling (machine milling process), and the lay-up of composite stringers. In each case the accuracy of the time estimate is as good as that of traditional cost estimation methods, but the effort is much less. The coefficient for composite lay-up compares well to that obtained from basic physiological data (Fitts Law).
Recommended Content
| Aerospace Material Specification | Identification Finished Parts |
| Aerospace Standard | BEARING, PLAIN, ROD END, SELF-ALIGNING, SELF-LUBRICATING, NARROW, EXTERNALLY THREADED, -65 TO +325 °F |
| Technical Paper | Refill Friction Stir Spot Joining Rivet Replacement Technology |
Authors
Citation
Hoult, D. and Meador, C., "Predicting Product Manufacturing Costs from Design Attributes: A Complexity Theory Approach," SAE Technical Paper 960003, 1996, https://doi.org/10.4271/960003.Also In
References
- Hess, R. W. Romanoff H.P. Aircraft Airframe Cost Estimating Relationships: Bombers and Transports The Rand Corporation Report No. R-2283/3-AF December 1987
- Beltramo, Micheal, N. “The Use of System Level Cost Estimating Relationships to Establish Initial Design to Cost Targets for Rotorcraft” Fixed Wing and Hybrid Aircraft 37th Annual Conference of the Society of Allied Weight Engineers, Inc. Munich, West Germany May 8-10 1978
- Busch, John Technical Cost Modeling of Plastics Fabrication Processes Department of Materials Science, Massachusetts Institute of Technology 1987
- Gutowski, T. Henderson, R. Shipp, C. Manufacturing Costs For Advanced Composite Aerospace Parts SAMPE Journal 1991
- Burnet, Charles Cost Estimating the Science of the Possible Forecasting Costs For the 21st Century, Proceedings of Royal Aeronautical Society November 1986
- Fernandez, Ricardo, L. The Effect of Part Design on Tooling Cost in Injection Molding Department of Mechanical Engineering, University of Massachusetts Amherst 1987
- Divgi, J. The Effect of Part Design Attributes on Material and Tooling Costs in Die Casting - A Pilot Field Study M. S. project report University of Massachusetts Amherst 1986
- Busch, J. Primary Fabrication Methods and Costs in Polymer Processing for Automotive Applications Department of Material Science and Engineering, MIT 1985
- Boothroyd, G. Dewhurst, P. “Product Design for Assembly” Boothroyd & Dewhurst Inc. Wakefield, R.I. 1986
- Boothroyd, G. Fairfield, M. Assembly of Large Products Annals of the CIRP 40 1 1991
- Boothroyd, G. Radovanovic, P. “Estimating the Cost of Machined Components During the Conceptual Design of a Product” Draft paper 1989
- Boothroyd & Geoffrey “Assembly, Automation and Product Dilling machine
- Wilson, David, R. An Exploratory Study of Complexity in Axiomatic Design Department of Mechanical Engineering, MIT 1980
- Pearce, Dennis Moldmaking: A Statistical/Heuristic Approach to Estimating Mold Costs Plastics Engineering June 1989
- Pugh, S. Total Design: Integrated methods for successful product engineering Addison-Wesley 1991
- Shannon, C.laude E. Weaver, Warren The Mathematical Theory of Communication University of Illinois Press 1949
- Suh, N. P. Bell, A. C. Gossard, D. C. On An Axiomatic Approach to Manufacturing and Manufacturing Systems Journal of Engineering for Industry ASME May 1978
- Suh, Nam The Principles of Design Oxford University Press 1990
- Tse, Mawuli “Design Cost Model For Advanced Composite Structures” Mechanical Engineering Department and Technology and Policy Program MIT Sept. 1992
- LeBlanc, D. J. et al. Advanced Composites Cost Estimating Manual I II Northrop Corporation, Aircraft Division 1976
- Jensen, Cecil Helsel, Jay Engineering Drawing and Design 2nd McGraw Hill 1979
- Baron Machine Company Inc. private communication 1992
- Muter, S. M.E. Dept., MIT Jan. 1993
- Ostwald Phillip, F. AM Cost Estimator 4th Penton 1988
- Niu, M. Composite Airframe Structures: Practical Design Information and Data Conmilit Press 1992
- Ein Teck, Neoh “Calculation of the ACCEM lay up times” private communication 1992
- Fitts, Paul M. Posner, Micheal I. Human Performance Brooks/Cole Publishing Co. Basic Concepts in Psychology Series 1967
- Annett, J. Golby, C. W. Kay, H. The Measurement of Elements in an Assembly Task-The Information Output of the Human Motor System The Quarterly Journal of Experimental Psychology 1958 10