measurement of the surface of textiles during microwave drying using a thermographic phosphor

surface temperature measurements of textile materials during exposure to microwave energy are nearly impossible to obtain using conventional temperature measurement methods. wool fabric surface temperatures were obtained using laser-induced fluorescence of the thermographic phosphor, europium-doped lanthanum oxysulfide (la/sub 2/o/sub 2/s..

the effect of fibre surface treatment, resin type and fabrication process on the interlaminar shear strength of carbon fibre composites

some data related to the preparation of carbon fibre composites is summarised. a limited investigation concerned with presenting markedly different fibre surfaces to the resin by coating with metals and stearic acid is also described. there are carbon fibre surface treatments which lead to improved shear strength, but it is not clear how ..

bonding thermosprayed silicon to glass-ceramic

the results of examining alternate surface preparations which create a roughened substrate without the usual weakening of the finished article are given. the surface roughness essential to the mechanical bond is produced when the article is in the green or glassy state, and in a subsequent processing step the glass is converted to glass-c..

new class of microwave shielding materials

the use of metal fibres in microwave shielding materials was investigated. the fibres were incorporated into textiles and rigid or flexible insulators. these new materials make effective shields combined with interesting mechanical and antistatic properties that increase equipment safety

description of a unique machine tool permitting achievement of <15-aa rms diamond-turned surfaces

the cutting tool is computer programmed to move in 4-mm increments along two axes' an x axis and an omega axis exceptionally stiff and accurate control of the tool is possible with this system. copper surfaces of revolution have been produced with a 12.3-aa rms surface finish and a contour accuracy of 75 nm in conjunction with a thermally..

modified rod-in-tube method for low-loss step-index optical fiber

the authors present an outline of the mrt method and characteristics of fibers prepared by the method

processes in sulfur dioxide treatment of pan fibers

when pan fibers containing 4percent methyl acrylate, 3.2 denier, react with so/sub 2/ at increasing temperature up to 290 degreesc, the reaction is slow below 230 degreesc and rapidly increases thereafter. the effects of up to 20 w/o s have been studied. the incorporation of s leads to an increase in fiber diameter. reduction of dta exoth..

a simple technique for silicon nitride growth

the process of fabrication of isfets (ion-selective field effect transistors) includes formation of thin layers of the insulators sio/sub 2/ or si/sub 3/n/sub 4/ on silicon. considering the negative free energy for the possible reaction 6si+3nh/sub 3/=si/sub 3/n/sub 4/+6h/sub 2/ it is predicted that a technique should be possible for grow..

structure and mechanical properties of al/al/sub x/o/sub y/ vacuum-deposited laminates

high yield strength materials can be fabricated by many techniques. a method proposed by koehler is to alternate thin layers of a high shear modulus material with thin layers of a low shear modulus material. the mechanical effect is to inhibit dislocation formation and the mobility of dislocations through the solid. a novel technique has ..

a technique for full surface examination of small spheres in the scanning electron microscope

in response to the increasing severity of target surface finish requirements for laser fusion experiments, it has become necessary to examine spherical targets in the scanning electron microscope, prior to laser irradiation, on an orderly nondestructive basis. the authors have thus developed a new sample manipulation technique which rolls..