Abstract
Because of their excellent mechanical properties at low temperatures glass-fiber reinforced plastics have been used for an increasing number of applications. Hence, the assessment of their mechanical properties at low temperatures under various loading conditions (tension, compression and in particular shear) have become of special interest. In the present contribution, we report on a new (experimentally simple) method designed to measure the shearing properties and the fracture behavior in mode II on notched rectangular specimens, which is especially well suited for measurements on small samples, e.g. for irradiation experiments. Results on a two dimensional reinforced epoxy (ISOVAL 10), which were obtained at room temperature and at 77 K, will be presented. The fracture-mechanical characterization of the material in mode II (shear mode) will be treated as a limiting case of the new testing method. Results of acoustic-emission investigations as well as data pertaining to variations of the shear area will be discussed. Advantages and disadvantages of this new technique will be assessed and compared to other shear test methods.
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
A. C. Garg, Intralaminar and interlaminar fracture in graphite/epoxy laminates, Eng. Fract. Mech. 23:719–733(1986).
S. Nishijima, T. Okada, T. Hirokawa, J. Yasuda and Y. Iwasaki, Radiation damage of organic composite material for fusion magnet, Cryoenics 31: 273–276
S. Egusa, Anisotropy of radiation-induced degredation in mechanical properties of fabric-reinforced polymer-matrix composites, J. Mat. Sci. 25:1863–1871 (1990).
S. Hashemi, A. J. Kinloch and J. G. Williams, The analysis of inter-laminar fracture in uniaxial fibre-polymer composites, Proc. R. Soc. Lond. A 427:173–199 (1990).
D. F. Adams and D. E. Walrath, Iosipescu shear properties of SMC Composite materials, Composite materials: Testing and Design (Sixth Conference). ASTM STP 787, American Soc. for Testing and Materials, 19–33 (1982).
J. A. Barnes, M. Kumosa and D. Hull, Theoretical and experimental evaluation of the Iosipescu shear test, Comp. Sci. Tech. 28:251–268 (1987).
G. S. Giare, A. Herold, V. Edwards and R. R. Newcomb, Fracture toughness of unidirectional graphite fibre reinforced/epoxy composite in mode II (forward shear), using a thin tubular specimen, Eng. Fract. Mech. 30:531–545 (1988).
P. Ifju and D. Post, A compact double notched specimen for in-plane shear testing, preprint.
J. Davies, C. W. A. Yim and T. G. Morgan, Determination of fracture parameters of a punch-through shear specimen, Int. J. of Cement Comp. and Leightweight Concrete 9:33–41 (1987).
J. Davies, Numerical study of punch-through shear specimen in mode II testing for cementitious materials, Int. J. of Cement Comp. and Leightweight Concrete 10:3–14 (1988).
E. K. Tschegg, Strain softening behavior of fiber reinforced materials, Mat. Sci. Eng. submitted (1991).
E. K. Tschegg, K. Humer and H. W. Weber, Influence of test geometry on tensile strength of fibre reinforced plastics at cryogenic temperatures, Cryogenics 31: 312–318 (1991).
A. Hillerborg, Analysis of one single crack, in Proc. “Fracture Mechanics of Concrete, Developments in Civil Engineering”, Ed. by F. Wittmann, Elsevier Amsterdam, 7:223–249 (1983).
E. K. Tschegg, K. Humer and H. W. Weber, to be published.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1992 Springer Science+Business Media New York
About this chapter
Cite this chapter
Tschegg, E.K., Humer, K., Weber, H.W. (1992). Shear Fracture Tests (Mode II) on Fiber Reinforced Plastics at Room and Cryogenic Temperatures. In: Fickett, F.R., Reed, R.P. (eds) Materials. Advances in Cryogenic Engineering, vol 38. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-9050-4_45
Download citation
DOI: https://doi.org/10.1007/978-1-4757-9050-4_45
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4757-9052-8
Online ISBN: 978-1-4757-9050-4
eBook Packages: Springer Book Archive