Search Results - "BOURKE, M. A. M"

Elastic modulus of shape-memory NiTi from in situ neutron diffraction during macroscopic loading, instrumented indentation, and extensometry by Rajagopalan, S., Little, A. L., Bourke, M. A. M., Vaidyanathan, R.

“…The elastic modulus of B19' shape-memory NiTi was determined using three techniques; from the response of lattice planes measured using in situ neutron…”
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Non-contact measurement of partial gas pressure and distribution of elemental composition using energy-resolved neutron imaging by Tremsin, A. S., Losko, A. S., Vogel, S. C., Byler, D.D., McClellan, K. J., Bourke, M. A. M., Vallerga, J. V.

“…Neutron resonance absorption imaging is a non-destructive technique that can characterize the elemental composition of a sample by measuring nuclear resonances…”
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Non-destructive studies of fuel pellets by neutron resonance absorption radiography and thermal neutron radiography by Tremsin, A.S., Vogel, S.C., Mocko, M., Bourke, M.A.M., Yuan, V., Nelson, R.O., Brown, D.W., Feller, W.B.

“…Many isotopes in nuclear materials exhibit strong peaks in neutron absorption cross sections in the epithermal energy range (1–1000eV). These peaks (often…”
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Microstructure of cryogenic treated M2 tool steel by Huang, J.Y, Zhu, Y.T, Liao, X.Z, Beyerlein, I.J, Bourke, M.A, Mitchell, T.E

“…Cryogenic treatment has been claimed to improve wear resistance of certain steels and has been implemented in cutting tools, autos, barrels etc. Although it…”
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Development of intergranular thermal residual stresses in beryllium during cooling from processing temperatures by Brown, D.W., Sisneros, T.A., Clausen, B., Abeln, S., Bourke, M.A.M., Smith, B.G., Steinzig, M.L., Tomé, C.N., Vogel, S.C.

“…The intergranular thermal residual stresses in texture-free solid polycrystalline beryllium were determined by comparison of crystallographic lattice…”
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Tensile flow stress of ceramic particle-reinforced metal in the presence of particle cracking by Mueller, R., Rossoll, A., Weber, L., Bourke, M.A.M., Dunand, D.C., Mortensen, A.

“…A simplified model is proposed to quantify the effect of damage in the form of particle cracking on the elastic and plastic behaviour of particle-reinforced…”
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A neutron diffraction and modeling study of uniaxial deformation in polycrystalline beryllium by BROWN, D. W, BOURKE, M. A. M, CLAUSEN, B, HOLDEN, T. M, TOME, C. N, VARMA, R

“…The deformation of polycrystalline beryllium to strains of + or -0.8 pct in uniaxial tension and compression was studied by neutron diffraction and modeled…”
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Development of crystallographic texture during high rate deformation of rolled and hot-pressed beryllium by BROWN, D. W, ABELN, S. P, BLUMENTHAL, W. R, BOURKE, M. A. M, MATAYA, M. C, TOME, C. N

“…Weakly textured hot-pressed (HP) beryllium and strongly textured hot-rolled beryllium were compressed using a split-Hopkinson pressure bar (SHPB) (strain rate…”
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NiTi and NiTi-TiC composites: Part IV. Neutron diffraction study of twinning and shape-memory recovery by DUNAND, D. C, MARI, D, BOURKE, M. A. M, ROBERTS, J. A

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In-Situ response of WC-Ni composites under compressive load by PAGGETT, J. W, KRAWITZ, A. D, DRAKE, E. F, BOURKE, M. A. M, CLAUSEN, B, BROWN, D. W

“…The in-situ strain response of WC-Ni cemented carbides (5, 10, and 20 wt pct Ni) to uniaxial compressive load was measured using neutron diffraction. Strain…”
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Finite element analysis of the plastic deformation zone and working load in equal channel angular extrusion by Li, S., Bourke, M.A.M., Beyerlein, I.J., Alexander, D.J., Clausen, B.

“…A comprehensive finite element (FE) study is conducted to analyze the formation of the plastic deformation zone (PDZ) and evolution of the working load with…”
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Uniaxial tensile deformation of uranium 6 Wt Pct niobium : A neutron diffraction study of deformation twinning by BROWN, D. W, BOURKE, M. A. M, DUNN, P. S, FIELD, R. D, STOUT, M. G, THOMA, D. J

“…The deformation of polycrystalline uranium 6 wt pct niobium (U6Nb) was studied in situ during uniaxial tensile loading by time-of-flight neutron diffraction…”
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New Developments in Proton Radiography at the Los Alamos Neutron Science Center (LANSCE) by Morris, C. L., Brown, E. N., Agee, C., Bernert, T., Bourke, M. A. M., Burkett, M. W., Buttler, W. T., Byler, D. D., Chen, C. F., Clarke, A. J., Cooley, J. C., Gibbs, P. J., Imhoff, S. D., Jones, R., Kwiatkowski, K., Mariam, F. G., Merrill, F. E., Murray, M. M., Olinger, C. T., Oro, D. M., Nedrow, P., Saunders, A., Terrones, G., Trouw, F., Tupa, D., Vogan, W., Winkler, B., Wang, Z., Zellner, M. B.

“…An application of nuclear physics, a facility for using protons for flash radiography, has been developed at the Los Alamos Neutron Science Center (LANSCE)…”
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Texture, strain, and phase-fraction measurements during mechanical cycling in superelastic NiTi by Vaidyanathan, R, Bourke, M A M, Dunand, D C

“…Superelastic NiTi was subjected to simultaneous neutron diffraction and uniaxial compressive cycling between 10 and 980 MPa. The objective was an in-situ…”
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Elastic phase-strain distribution in a particulate-reinforced metal-matrix composite deforming by slip or creep by DAYMOND, M. R, LUND, C, BOURKE, M. A. M, DUNAND, D. C

“…The macroscopic load-bearing capability of a composite is directly related to the strain partitioning due to load transfer between the component phases. Using…”
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Measurement of residual thermal stress in WC–Co by neutron diffraction by Mari, D., Clausen, B., Bourke, M.A.M., Buss, K.

“…The temperature dependence of residual stresses in a WC–17.8vol.%Co cemented carbide was measured by neutron diffraction. The comparison of the WC lattice…”
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Lattice strain evolution during uniaxial tensile loading of stainless steel by Clausen, Bjørn, Lorentzen, Torben, Bourke, Mark A.M., Daymond, Mark R.

“…Applied and residual lattice strains were determined by neutron diffraction during a tensile test of a weakly textured austenitic stainless steel and were…”
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Investigation of thermal residual stresses in tungsten-fiber/bulk metallic glass matrix composites by Dragoi, Danut, Üstündag, Ersan, Clausen, Bjorn, Bourke, Mark A.M

“…One important issue in BMG matrix composites is the presence of thermal residual stresses due to the mismatch in coefficients of thermal expansion (CTE)…”
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Neutron diffraction measurement of stress-induced transformation in superelastic NiTi by Bourke, M. A. M., Vaidyanathan, R., Dunand, D. C.

“…The formation of stress-induced martensite in superelastic NiTi was studied by neutron diffraction during uniaxial compressive loading and unloading. The…”
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Temperature and direction dependence of internal strain and texture evolution during deformation of uranium by Brown, D.W., Bourke, M.A.M., Clausen, B., Korzekwa, D.R., Korzekwa, R.C., McCabe, R.J., Sisneros, T.A., Teter, D.F.

“…Depleted uranium is of current programmatic interest at Los Alamos National Lab due to its high density and nuclear applications. At room temperature, depleted…”
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