Fracture behaviour of glass

Aka Akay, M., Oregan, D. F. Fracture behaviour of glass fibre reinforced polyamide mouldings. Polym. Test. 14 (1995) 149-162. 

The fracture behaviour of glasses is also influenced by humidity. An increase of the relative humidity results in an increase of fracture velocity. Wiederhorn [562] provided an explanation of the mechanism of the impact of moisture on the fracture behaviour. Michalske and Freiman [356] discussed the molecular mechanism of stress corrosion in vitreous silica, which depends on the environmental conditions. The increase in the fracture velocity in glasses with increase in environmental moisture content is due to the chemical reaction between glass with water at the crack tip. The transport rate of water to the crack tip influences the fracture behaviour. These effects are of particular importance for the mechanical shaping of glasses in the presence of aqueous lubricants. 

L. Onchin, W.K. Olender, and F.H. Ancker, Fiber/matrix adhesion and the fracture behaviour of glass reinforced high density polypropylene, Proceedings of the 27th Conference of the Reinforced Plastics / Composites Institute, 1972, Section 11-A, p. 1-7... 

Karger-Kocsis J. and Friedrich K. (1988). Fracture behaviour of injection-molded short and long glass fiber-polyamide 6.6 composites. Composites Sci. Techno . 32, 293-325,... 

The tensile tests on the composites with 50 vol% glass beads indicate that good adhesion was already obtained with a coating of five equivalent molecular layers of the silane, and the fracture behaviour of specimens fractured at - 196°C confirmed the earlier observations that an adhering layer of modified polyethylene is formed around the glass when treated with silane. 

The analysis of the deformational behaviour of linear polymers allows us to understand the importance of plasticity in fracture behaviour of the glassy state. The same result is valid for the network glasses considered. Fracture processes in glassy polymers of epoxy-aromatic amines type were investigated in Refs. 87and64). The main results of the investigations can be summarized as follows ... 

FRACTURE BEHAVIOUR OF SHORT GLASS FIBRE-REINFORCED RUBBER-TOUGHENED NYLON COMPOSITES... 

The purpose of this investigation is to determine the effects of the rubber, the fibre concentration and the state of fibre/matrix interface upon the damage and fracture behaviour of short glass fibre-reinforced nylon-based materials. 

Fracture Behaviour of Short Glass Fibre-Reinforced Rubber- Toughened Nylon Composites 403... 

MD has been used very effectively to elucidate vibrational spectra. Garofalini (1982) reported vibrational modes at 400, 800 and 1100 cm in vitreous Si02 compared to 450, 800 and 1050 cm observed in Raman and 465, 800 and 1100 cm observed in IR and 350, 800 and 1080 cm observed in inelastic neutron scattering. Experimental observation such as non-Newtonian behaviour of glass forming melts (Simmons et al., 1982), brittle fracture of Si02 (Ochoa et al., 1991) are only some of the other successful simulations using this powerful technique. 

E. Zhang and D. P. Thompson, Fracture Behaviour of SiC Fibre-Reinforced Nitrogen Glass Matrix Conposites, J. Mat. Sci. 31, 6423 29 (1996). 

V. Cannillo, G. C. Pellacani, C. Leonelh, A. R. Boccaccini, Niunerical Modelling of the Fracture Behaviour of a Glass Matrix Composite Reinforced with Alumina Platelets, Composites Part A 34, 43-51 (2003). 

Dlouhy, Z. Chlup, D. N. Boccaccini, S. Atiq, A. R. Boccaccini, Fracture Behaviour of Hybrid Glass Matrix Composites Thermal Ageing Effects, Composites Part A 34, 1177-1185 (2003). 

Yasmin, A., and Bowen, P., 2002, Fracture behaviour of cross ply Nicalon/CAS II glass ceramic matrix composite laminate at room and elevated temperatures. Composites Part A Applied Science and Manufacturing 33 1209. 

D. E. Mouzakis, T. Harmia, J. Karger-Kocsis (2000) Fracture behaviour of discontinuous long glass fibre reinforced injection moulded polypropylene, Polym. Polym. Compos. 8, 167. 

In a series of previous papers [1-3], the authors have already analysed the influence of cure conditions on the tensile properties and fracture toughness of thermosetting polyester resins commonly used in glass-fibre reinforced plastics, as well as the mixed mode fracture behaviour of one of these resins. The experimental results obtained from fracture tests under combined modes I and II of loading are now used to carry out a detailed research on the performance of... 

Methods of testing and evaluating SFRC (Steel Fibre Reinforced Concrete) made using different types of fibres (hooked-end, enlarged ends, indented and metallic glass), have been investigated in experiments on thin beams loaded in bending. The tests were aimed at evaluation of fracture behaviour of various kinds of thin layer SFRC, used e.g. in shotcrete. 

As opposed to composites reinforced with SiC(w), the residual stresses formed at the interface should be lower as the CTE of the matrix and the reinforcement phase are similar. Several modeling studies have shown that the composition of the grain/glass interface has a negligible effect on the magnitude of the residual stresses and therefore has no significant influence on the fracture behaviour.19... 

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