zur festigkeit von verklebungen faserverstaerkter werkstoffe $left bracket$ on the strength of the adhesive bond of fiber reinforced materials $right bracket$

in this work the strength of a slip notch adhesive bond is examined. under load, high stress peaks are created at the ends of the joint section. because of the low shear stiffness of the fiber reinforced plastics the individual layers in the laminated plastic move against each other under the load. this causes diminishing of the stress pe..

lysis time and fdp immunoprecipitation by soluble and immobilized urokinase

urokinase (uk) was immobilized to the lumen of dacron-reinforced fibrocollagenous tubes (uk-fct) using a glutaraldehyde entrapment process, in an effort to develop a fibrinolytic small diameter (i. e. , 4 mm i. d. ) vascular graft soluble and immobilized urokinase were evaluated for their ability to lyse synthetic clots made from purified..

clincial study of urokinase-bound fibrocollagenous tubes

dacron-reinforced fibrocollagenous tubes (fct) were synthesized from canine mongrels using the mandril-rod technique in order to develop a small diameter (i. e. , 4 mm i. d. ) vascular graft. they were rendered fibrinolytic by immobilizing urokinase on to the inner surface of the tubes. urokinase-bound fibrocollagenous tubes (uk-fct), con..

manufacturing methods practiced by the danish and swedish precasting industry

the report reflects the impressions gained while making a tour of danish and swedish precasting factories in the spring of 1985 the high standard maintained by these manufacturing sites and the superior quality of their products are in particular emphasized. in german and english

electroforming of complex parts

electroforming is a modern technique for the production of complicated structures. the following applications are discussed: electroforming of combustion chambers, fabrication of concentrators for solar energy plants, production of water-cooled screens, boxes and targets for nuclear fusion experiments, fabrication of compact wind tunnel m..

tailoring filter fabrics for bag filters

to achieve good, trouble-free performance and high dust collection efficiency, the filter fabric has to be suitably tailored to the needs of the bag filter. based on the cleaning principle used and the process conditions, a judicious selection of filter fabric has to be made, with regard to: the type of material, the construction of the m..

surface finishing for magnetic head slider

a mechanical finishing process is described for a magnetic head slider having an increased service life over standard sliders. the life of a standard magnetic head/disk interface is limited by detrimental head/disk interference, starting with the formation of coating debris and ending with a head crash. the formation of debris is reduced ..

oberflaechenbehandlung von kohlenstoffasern und mechanische eigenschaften von laminaten. $left bracket$ surface treatment of carbon fibers and mechanical properties of laminates $right bracket$

a number of commercially used methods of carbon fiber surface treatment are reviewed. these include wet oxidation in aqueous oxidizers, dry oxidation at high temperature in oxidized gases, and anodic oxidation, which is a variant of wet oxidation involving electrolysis. the authors then discuss the problem of adhesion in laminated composi..

evaluation of acoustic emission from fibre-reinforced composites. part 2: the application of acoustic emission techniques to aramid fibre-reinforced model composites

an analysis of acoustic emission (ae) from model composites consisting of a single aramid fiber and different epoxy matrix systems has been carried out to identify the source of acoustic emission. the ae activity was observed in a narrow range of strain when fiber fracture occurred, whereas in a relatively wide range of strain, debonding ..

concentration of rotavirus by ultrafiltration

a hollow fiber ultrafiltration unit was evaluated for its capacity to concentrate human rotavirus from experimentally contaminated groundwater. the results of these experiments suggest that virus recovery is greatly improved by utilizing either a protein wash with beef extract or by backflushing the hollow fibers with phosphate buffered s..