A deuterium gas-puff load imploded by a multi-MA current driver, from a large initial diameter could be a powerful source of fusion neutrons, a plasma neutron source. Unlike the beam-target neutrons produced in Z-pinch plasmas in the 1950s and deuterium-fiber experiments in the 1980s, the neutrons generated in deuterium gas-puffs, with current levels achieved in recent experiments on the SNL Z facility, could contain a substantial fraction of thermonuclear origin. ...
A generalization of mclean's (directionally solidified materials for high temperature service, 1983, the metals society, london) uniaxial creep model which accounts for the effects of inherent residual stresses, matrix primary creep and the treatment of the effect of possible approach are used to analyse the uniaxial creep of ti-6-4/sic metal matrix composites. excellent agreement is obtained between the analytical and numerical models and predicted results are in reasonable agreement with ...
This paper concerned mmc in some important way and contained information about, utilized, or discussed these subjects: basic topics:, cr mmc, data, mmc, mmc data materials and material types:, (sic)f/ti, sic/ti, sic/ti-6-4, ti matrix material characteristics and data fields:, cte, cte data, fatigue behaviors, fracture strain data, mechanical fatigue, poisson data, residual stress, strain data, stress data, stress-strain behaviors, parameter values relevant to the data:, volume fractions testing and test ...
This paper concerned mmc in some important way and contained information about, utilized, or discussed these subjects: basic topics:, cr mmc, data, experimental, mmc, mmc data, theoretical, materials and material types:, (sic)f/ti, (sic)f/ti-6-4, coatings, fiber coatings, fibers, sic fibers, sic/ti, sic/ti-6-4, ti matrix, ti-6-4 matrix, tib2-c coatings material characteristics and data fields:, creep, cte, elastic deformations, elastic strains, fiber bending, fiber breakage, hoop stress, hoop stress data, plastic deformations, residual ...
This paper concerned mmc in some important way and contained information about, utilized, or discussed these subjects: basic topics:, analytical, data, dr mmc, mmc, mmc data materials and material types:, (sic)p/6061, (sic)p/al, 6061 matrix, al matrix, particulates, sic particulates, sic/6061, sic/al material characteristics and data fields:, compressive strength data, cte, deformations, grain sizes parameter values relevant to the data:, volume fractions testing and test conditions:, compressive tests, hardness tests, optical ...
This paper concerned mmc in some important way and contained information about, utilized, or discussed these subjects: basic topics:, data, dr mmc, experimental, mmc, mmc data materials and material types:, (sic)f/ti-6-4, short fibers, sic fibers, sic/ti-6-4, ti matrix, ti-6-4 matrix material characteristics and data fields:, axial stress data, creep strains, elastic strain rates, hydrostatic strength, interfacial shear strength, matrix creep, poisson's ratio, thermal residual axial strength, thermal residual shear strength, ...
A whole-field strain analysis is performed on the Iosipescu specimen by both moire interferometry and the finite element method. The strain distribution outside and within the test section is examined for a graphite/epoxy woven (0,90) laminate specimen. The effect of factors such as twist, bending moment and loading points, which cause the experimental errors, is studied.
A finite element method was used to determine the stress and strain distribution around a failed link in a carbon-reinforced ply in a woven carbon/glass epoxy laminate under tensile loading. On the assumption that delamination follows the initial tensile failure in the carbon link, the new stress and strain distribution was determined. The results are discussed in terms of the effect of stacking sequence on the tensile failure of woven ...
A THREE-POINT BENDING ARRANGEMENT HAS BEEN USED TO EXPLORE THE EFFECT OF CONTACT DAMAGE ON THE STRENGTHS OF CERAMICS. THE DAMAGE MECHANISMS ARE STUDIED THROUGH OPTICAL MICROSCOPY AND SCANNING ELECTRON MICROSCOPY. THE CONTACT STRESSES ARE THEN ANALYSED BY THE FINITE ELEMENT METHOD, AND FRACTURE MECHANICS IS APPLIED TO INTERPRET THE TEST DATA. IT IS FOUND THAT THE DAMAGE PROCESS CONSISTS OF TWO STEPS: FORMATION OF THE STRENGTH-CONTROLLING CRACKS IN THE ...
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