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The Relationship of a Gasket’s Physical Properties to the Sealing Phenomenon
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Sector:
Event:
Mid-Year Meeting
Language:
English
Abstract
The internal combustion engine cylinder head gasket is the most complex of all gasket applications. This is due to the variety of seals and sealing conditions which must be achieved in a single gasket. Some of the physical characteristics studied for such gaskets include spring rate, stress relaxation, torque loss, and permeability of current materials and elements used in these constructions. The effects of temperature, sealing stress, thickness, geometry, and engine operation on the properties of gaskets are discussed.
In one of the theoretical derivations given, a mathematical model of a viscoelastic material is used to explain the results of certain experimental testing. Major emphasis is placed on spring rate and stress relaxation, which are directly related to fluctuations of sealing pressure and loss of torque which must be controlled in order to achieve satisfactory sealing.
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Authors
Citation
Czernik, D., Moerk, J., and Robbins, F., "The Relationship of a Gasket’s Physical Properties to the Sealing Phenomenon," SAE Technical Paper 650431, 1965, https://doi.org/10.4271/650431.Also In
References
- Roberts, I. “Gaskets and Bolted Joints.” J. Applied Mechanics 17 June 1950 169 179
- Crouch, L. E. Czernik, D. E. Labrecque, V. J. Lillis, S. M. “A Well Designed Cylinder Head Gasket -- That Thin Margin of Success.” Paper presented at SAE National Powerplant Meeting, Chicago October 1963
- Smoley, E. M. Kessler, F. J. Kottmeyer, R. E. Tweed, R. G. “The Creep-Relaxation Properties of a Flat Face Gasketed Joint Assembly and Their Relation to Gasket and Flange Design.” Paper presented at SAE Earthmoving Industry Conference, Central Illinois Section, Peoria, III. March 1963
- Thorn, F. C. “Creep and Relaxation in Compressed Asbestos Gaskets.” ASTM Bulletin September 1949 58 61
- Nielsen L. E. “Mechanical Properties of Polymers.” New York Reinhold Publishing Corp. 1962
- Rothbart H. A. “Mechanical Design and Systems Handbook.” New York McGraw-Hill Book Co. 1964