Experimental and analytical studies of the fracture behaviour of engineering adhesives and adhesive joints under impact loading
Modern structural adhesives are extensively used in the aerospace, automobile and other industries where the resistance to impact loading is of paramount importance. Impact testing of homogeneous materials where a notched specimen is subjected to a known impulse is well established. The object of such tests is usually to determine a parameter, such as the fracture energy, Gc, which characterises failure of the material and which is independent of the detailed geometry of the specimen. Such a parameter may then be readily used in material selection and design studies. The present paper first considers the impact fracture of “bulk” model engineering adhesives and, in particular, considers the possible dynamic effects which can arise during impact testing and lead to inaccurate values of the impact resistance of the material being measured.
KeywordsStress Intensity Factor Crack Length Fracture Energy Impact Velocity Interfacial Crack
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- 2.A. J. Russel, and K. N. Street, ASTM STP 876, 1985, 349.Google Scholar
- 3.S. Mall, and N. K. Kochhar, IMechE, C159/86, 1986, 71.Google Scholar
- 4.Programme for Automatic Finite Element Calculations (PAFEC), Pafec Ltd., Nottingham, NG8 6PE.Google Scholar
- 5.D. P. Rooke, and D. J. Cartwright, Compendium of stress intensity factors, HMSO, 1976.Google Scholar
- 6.E.Thrusabanjong, Final Report Mech Eng Dep. Imperial College, 1987.Google Scholar
- 7.J. G. Williams, Fracture Mechanics of Polymers, Ellis Horwood Series, 1984.Google Scholar
- 8.C. Y. Wang, Fracture mechanics for interfacial cracks between adhesively bonded dissimilar materials, T+A.M. Report 353, University of Illinois, USA, 1972.Google Scholar
- 9.W. D. Bascom, R. L. Jones, and C. O. Timmons, Adhesion Science and Technology, Ed. Lieng Huang Lee Plenum Press, p501.Google Scholar
- 10.W. SJohnson, and P. D. Mangalgiri, NASA technical memorandum 87571, Langley Research Centre, Virginia 23665.Google Scholar