faeltreparation av ballistiskt skadade kolfiber/epoxilaminat (field repair of ballistically damaged carbonfibre/epoxy laminates)

carbon fiber laminates with ballistic damage were repaired with equipment used for field repair. flush scarf repair were used with two different layer configurations, cup and butt. repaired laminates were loaded in tension until fracture. tensile strength was 55-75 of undamaged laminate. tensile strength for unrepaired ballistically damag..

al-li alloy developed by pechiney

an up-to-date view of al-li development is presented in terms of both properties and production readiness. successes achieved to date, mostly where damage tolerance and medium strength targets are concerned, will be outlined. design allowables, properties, and product size capabilities will be presented for some alloy/product form combina..

on-line x-ray inspection of materials and structural components using discrete element x-ray detectors for digital radiographic and computed tomographic evaluation. final rept. 1 aug 88-31 jan 90

this project was designed to study the effectiveness of industrial computed tomography (ct) and digital radiography (dr) as inspection techniques for the evaluation of materials and structural components manufactured on-line. the results indicate that computed tomography is an appropriate technique if speed and cost are not critical consi..

oxygen concentrations on surfaces of carbon fibers. final rept

performance of carbon fiber reinforced composites depends significantly on the interface between the fiber surfaces and the resin matrix. good adhesion is a precondition for the intended transfer of stresses in the fiber polymer composites. for carbon fibers, the oxidized surface treatment is a widely accepted method used to achieve good ..

trace element distribution in the rat cerebellum

spatial distributions and concentrations of trace elements (te) in the brain are important because te perform catalytic structural functions in enzymes which regulate brain function and development we have investigated the distributions of te in rat cerebellum structures were sectioned and analyzed by the synchrotron radiation induced x-r..

electrode/workpiece combinations

of the many machine tool operations available in the shop today, plunge cut edm has become an increasingly useful method of materials fabrication. it is a necessary tool for the research and development type of work performed at the lawrence livermore national laboratory (llnl). with advancing technology, plunge cut edms are more efficien..

fabrication of an explosive driven linear magnetic flux generator

lightweight, high power electrical generators are required for aerospace and defense applications. single use, linear designs offer high current output from a small package. electrical current magnifications of the order of 100 to 200 times are expected to be achieved, with higher efficiencies on the horizon. a method of fabricating one o..

evaluation of electroformed copper for shaped charge applications

in this paper, we present our observations of the behavior of conical shaped charge liners electroformed in a proprietary acid copper sulfate solution and compare these to the dynamic failure observed in rapidly expanding ring experiments with the same material. although the electroforms performed poorly in both tests, exhibiting low duct..

fabrication of a laminate structure for a geophysical electrical simulator

in this report we describe the development of an unconventional fabrication process using traditional printed-circuit-board materials for assembly into a geophysical electrical simulator. this simulator serves as a bench top geophysical electrical simulation facility for studying and validating dc and very-low-frequency geophysical respon..

bulletin of the government industrial research institute, osaka, vol. 40, no. 2, june 1989

the bulletin contains articles on: disposal method by the vitrification of wastes containing heavy metals; expression of synthetic genes fused to biotinyl region of transcarboxylase of propionibacterium shermanii in esherichia coli; separation of binary mixtures of benzene, cyclohexane, and n-hexane by pervaporation through poly (vinyl ch..