Abstract
Results of an extensive test program to determine static strength are correlated with the design method for mechanically fastened composite joints proposed by Hart-Smith. Among the variables covered were the amount of absorbed moisture in the laminates, their layup, bolt spacing, multiple bolt rows, single and double lap configurations. Tension shear testing was conducted at room temperature, 394 K (250°F), and 427K (310°F) to assess the impact of temperature on strength. Correlation with the design method over this wide range of variables is considered to be highly satisfactory. Of particular interest was the ability of the method to correctly predict interaction effects among closely spaced bolts.
This work was supported by LMSC Missile Systems Division Independent Development Funds.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Garbo, S. P. and Ogonowski, J. M., Effect of variance and manufacturing tolerances on the design strength and life of mechanically fastened composite joints, AFFDL-TR-78-179, December, 1978.
HART-Smith, L. J., Bolted joints in graphite epoxy composites, NASA CR144899. June, 1976.
HART-Smith, L. J., Mechanically fastened joints for advanced composites— Phenomelogical considerations and sample analyses, Proc. of the Fourth Conference on Fibrous Composites in Structural Design, San Diego, CA. November, 1978. (To be published.)
Bailie, J. A., Duggan, M. F., Bradshaw, N. C. and Mckenzie, T. G., Design of graphite cloth epoxy bolted joints at temperatures up to 450 K. Proc. of ASTM Symposium ‘Joining of Composite Structures’. Minneapolis, Minnesota, April, 1980. (To be published.)
Kim, R. Y. and Whitney, J. M., Effect of temperature and moisture on pin bearing strength of composite laminates, J. Comp. Mads., 10 (April, 1976), 149–55.
Wilkins, D. J., Environmental sensitivity tests of graphite epoxy bolt bearing properties. Composite Materials Testing and Design (Fourth Conference). ASTM STP617, 1977, pp. 497–513.
Ramkumar, R. L., Bolted joint design. Proc. of Symposium on Test Allowables for Fibrous Composites. ASTM Conference held at Dearborn, MI on October 3rd and 4th, 1979. (To be published.)
Agarwal, B. L., Behavior of multifastener bolted joints in composite materials (Paper No. 80-0307). Proc. AIAA 18th Aerospace Sciences Meeting. Pasadena, CA. January 14–16, 1980.
Mckenzie, T. G. and Howard, S. A., Unpublished Data. Lockheed Missiles & Space Company, 1979.
Crossley, F. A., Vollersen, C. A., Goetz, A. C. and Davis, G. E., Structural test program for a major graphite epoxy composite component for the Trident I Missile. Proc. 4th Aerospace Testing Seminar. Institute of Environmental Sciences, 1978.
Bailie, J. A., Duggan, M. F., Fisher, L. M. and Yee, R. C, Effect of holes on graphite cloth epoxy laminate’s tension strength at temperatures up to 450 K (350 °F). Presented at AIAA/ASME/ASCE/AHS 21st Structures Structural Dynamics and Materials Conference. Seattle, WA. May 12–14, 1980. (To be published.)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1981 Applied Science Publishers Ltd
About this chapter
Cite this chapter
Bailie, J.A., Fisher, L.M., Howard, S.A., Perry, K.G. (1981). Some Environmental and Geometric Effects on the Static Strength of Graphite Cloth Epoxy Bolted Joints. In: Marshall, I.H. (eds) Composite Structures. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-8120-1_5
Download citation
DOI: https://doi.org/10.1007/978-94-009-8120-1_5
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-009-8122-5
Online ISBN: 978-94-009-8120-1
eBook Packages: Springer Book Archive