S glass composition

Resin Il/S-glass and Resin I/S-glass composites were tested in tension on unidirectional samples at 10° off axis. This test is considered to be sensitive to changes in interfacial bonding and is useful as a measure of moisture induced degradation. The data scatter for both systems is quite broad. Statistical... 

Selected glass and/or glass ceramic Si-AI-O-N fibers are shown in Table VI. The first [23] is S-glass, and the second is a Mg-Si-AI-O-N composition that is similar to the S-glass composition... 

S-glass composites are used in the majority of aerospace applications. The glass is used to the greatest extent in combination with epoxy resins. The resultant composite maintains excellent structural characteristics up to the degradation of the epoxy resin. A primary supplier of S-glass fiber is Owens Coming. 

Net-tension failures can be avoided or delayed by increased joint flexibility to spread the load transfer over several lines of bolts. Composite materials are generally more brittle than conventional metals, so loads are not easily redistributed around a stress concentration such as a bolt hole. Simultaneously, shear-lag effects caused by discontinuous fibers lead to difficult design problems around bolt holes. A possible solution is to put a relatively ductile composite material such as S-glass-epoxy in a strip of several times the bolt diameter in line with the bolt rows. This approach is called the softening-strip concept, and was addressed in Section 6.4. 

Uemiya, S., Y. Kude, K. Sugino, N. Sato, T. Matsuda, and E. Kikuchi, A palladium/porous glass composite membrane for hydrogen separation, Chem. Lett., 10,1687-1690,1988. 

Bright, J.D., Danchaivijit, S. and Shetty, D.K. (1991). Interfacial sliding friction in silicon carbidc-borosilicate glass composites a comparison of pullout and pushout tests. J. Am. Ceram. Soc. 74, 115-122. 

The colors in rare earth glasses are caused by the ion being dissolved and they behave uniquely because the 4 f electrons are deeply buried. Their colors depend on transitions taking place in an inner electronic shell while in other elements such as the transition metals, the chemical forces are restricted to deformation and exchanges of electrons within the outer shell. Since the rare earth s sharp absorption spectra are insensitive to glass composition and oxidation-reduction conditions, it is easy to produce and maintain definite colors in the glass making process. ( )... 

Sobolev, I. A., Oiovan, M. I., Karlina, O. K., Stefanovsky, S. V. Galtsev, V. E. 1997b. Processing and characterization of glass composites for ash immobilization. Materials Research Society Symposium Proceedings, 465, 117-122. 

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