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Protected Ducking Rollers. Ducking rollers used in the pickling of continuous steel strip can now be fully protected against chemical corrosion. This development by Tanks & Linings Ltd. provides a roller with a plasticised PVC outer skin.

POLYCARBONATE can now be considered among the select group of aircraft transparent plastics and it has several key properties that make it attractive to the aircraft designer particularly because of its impact resistance and good strength at elevated temperatures, raw material suppliers and other manufacturers have struggled to overcome the chemical and physical shortcomings of this material. Optics have been improved both in a ‘cleaning‐up’ of raw resin and the extrusion proces‐sing, and also through optical flattening by pressure polishing of the surfaces. By this latter means, thicknesses greater than the normal sheet extrusion capacity can be built up from thinner gauges by simply welding them together without the use of adhesives or solvents. To summarise: Major Advantages:

A growing response in the development of hybrid composites to conquer the deficiency of neat composites has provoked doing this work. Thermoplastic Polycarbonate material offers better impact toughness with low structural weight. There is a little/no information available over the selected sandwich hybrid composite prepared from woven E-Glass and polycarbonate sheet. The purpose of this paper is to understand the response of the novel hybrid structure under tensile, flexural, interlaminar shear and impact loading conditions.

The hand-layup technique is used for fabricating the hybrid composites in the laminate configuration. The hybrid composites are prepared with a total fiber content of 70 percent weight fractions. The effect of the percentage of reinforcement on mechanical properties is evaluated experimentally as per American society for testing materials standard test methods. The damaged mechanisms of failed samples and fractured surfaces are well analyzed using vision measuring system and scanning electron microscopy.

A decline in densities of hybrid composites up to 22.5 percent is noticed with reference to neat composite. An increase in impact toughness up to 40.73 percent is marked for hybrid laminates owing to the ductile nature of PC. Delamination is identified to be the major mode of failure apart from fiber fracture/pull-out, matrix cracking in all the static loading conditions.

The response of novel hybrid composite reported has been explored for the first time in this paper. The outcome of experimental work revealed that hybridization offered lightweight structures with improved transverse impact toughness as compared to conventional composite.

A new generation of advanced, supersonic, fighter aircraft windshields and canopies is taking shape at the Sylmar, California facility of Sierracin Corporation under the impetus of an Air Force search for the ideal transparencies for current and future US fighters.

Describes the technical challenges presented by railway arch refurbishment, and how these challenges are being overcome. Considers the problems, constraints, and user requirements of arches, and the refurbishment techniques and services applied to them. Concludes that arch refurbishment benefits the railway financially as well as benefiting the community as a whole.

The coatings industry is in large measure a function of the world around it. Advances in related disciplines are scrutinised carefully by coatings chemists because of the ramifications that these new discoveries and inventions may have if applied directly to the coatings area. This is certainly true relative to new resins and other raw materials. It applies also to the development of new energy forms which reflect themselves in new ways to cure coatings. Accordingly, some of these newer advances which could eventually have important ramifications in the coatings industry will be reviewed here.