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  • 1
    Electronic Resource
    Electronic Resource
    Diagnostics of the magnetized low-pressure hydrogen plasma jet: Molecular regime (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 80 (1996), S. 1312-1324 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Optical emission and absorption spectroscopy and double Langmuir probe diagnostics have been applied to measure the plasma parameters of an expanding magnetized hydrogen plasma jet. The rotational temperature of the excited state H2(d2Πu) has been determined by analyzing the intensity distribution of the spectral lines of the Fulcher-α system of H2. The gas temperature in the plasma, which is twice the value of the rotational temperature is equal to (approximately-equal-to) 520 K. Several clear indications of presence of the "hot'' electrons have been observed in the plasma: (1) Langmuir probe measurements (Te(approximately-equal-to)1.4 eV), (2) appearance of the Fulcher-α system of H2 (excitation potential ΔE=13.87 eV), (3) low rotational temperature (T*rot(approximately-equal-to)260 K) of the excited H2(d3Πu) molecules, (4) local excitation in the plasma of Ar I(ΔE=15.45 eV), and Ar II(ΔE=19.68 eV) spectral lines, (5) local excitation in the plasma of He I(ΔE=23.07 eV and ΔE=24.04 eV) spectral lines. Optical actinometry has been applied to measure the absolute density of hydrogen atoms and hydrogen dissociation degree in the plasma. The measured absolute density of hydrogen atoms are in the (1–1.4)×1020 m−3 range, and the corresponding dissociation degree of the hydrogen plasma is in the range of 8%–13%. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.362930
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  • 2
    Electronic Resource
    Electronic Resource
    Experimental characterization of a hydrogen/argon cascaded arc plasma source : Proceedings of 5th international conference on ion sources (1994)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 65 (1994), S. 1469-1471 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A H2 /Ar cascaded arc plasma source has been experimentally characterized by determination of the efficiency, the electric field, and the pressure gradient of the arc. The results show that the efficiency of a H2/Ar cascaded arc drops when the hydrogen flow rate is increased. The electron temperature in the argon cascaded arc has been derived to be in the range 9000–12 500 K. For a hydrogen arc, the mass dissociation degree of hydrogen molecules has been derived to be above 60%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1144949
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of Zinc Content on the Ageing Behavior of Al-Zn-Mg-Cu-Li Alloys (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 575-578 (Apr. 2008), p. 1093-1096 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In this paper, Al-5.6Zn-2.8Mg-1.6Cu-0.24Cr-1.1Li, Al-8.0Zn-2.4Mg-2.4Cu-1.1Li-0.18Zrand Al-11.8Zn-2.9Mg-2.8Cu-1.1Li-0.24Zr (in wt%) alloys were artificially aged at 80,100,120,140and 160°C for different time, respectively. The ageing process, microstructure and hardness ofdifferent alloys are investigated by Vickers hardness and transmission electron microscopy (TEM).With the increment of zinc content, addition of Li to Al-Zn-Mg-Cu alloy containing high alloyingelements has little effect on the nucleation of precipitates, but the growth of precipitates has beeninhibited. Very fine precipitates with high density are formed during ageing due to the existence ofhigh alloying elements, which result in highly strengthening alloy. As the alloying content is toohigh to exceed the solution saturation of matrix, coarse second phases are formed in grain boundary
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/18/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.575-578.1093.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Symmetric periodic noncollision solutions forN-body-type problems (1995)
    Springer
    Acta mathematica sinica 11 (1995), S. 37-43 
    Details
    ISSN: 1439-7617
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Using the calculus of variations in the large, especially computing the category of the symmetric configuration space of symmetricN-body-type problems, we prove the existence of infinitely many symmetric noncollision periodic solutions about the symmetric and nonautonomousN-body-type problems under the assumptions that the symmetric potentials satisfy the strong force condition of Gordon.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02274045
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  • 5
    Electronic Resource
    Electronic Resource
    Navier solution for the elastic equilibrium problems of anisotropic skew thin plate wite variable thickness in nonlinear theories (1991)
    Springer
    Applied mathematics and mechanics 12 (1991), S. 373-382 
    Details
    ISSN: 1573-2754
    Keywords: variable thickness ; anisotropic ; skew thin plate ; Navier solution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Mathematics , Physics
    Notes: Abstract This paper discusses the elastic equilibrium problems of anisotropic skew thin plate of variable thickness simply supported on all four sides in nonlinear theories, and uses the Navier method to seek an approach to the problem, and to illustrate the solution with the examples. In conclusion, the mention is made of the scope of application and the convergency of the solution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02020400
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  • 6
    Electronic Resource
    Electronic Resource
    Nonlinear bendings of unsymmetrically layered anisotropic rectangular plates (1986)
    Springer
    Applied mathematics and mechanics 7 (1986), S. 1063-1081 
    Details
    ISSN: 1573-2754
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Mathematics , Physics
    Notes: Abstract An analysis for the nonlinear bendings of unsymmetrically layered anisotropic rectangular plates subjected to combined edge tensions and lateral loading under verious supports is presented. The uniformly valid N-order asymptotic solutions of the transverse deflection and stress function are derived by the singular perturbation method offered in [1]. The present investigation may provide a simple and convenient method for such a complex problem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01897209
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  • 7
    Electronic Resource
    Electronic Resource
    Nonlinear bendings of symmetrically layered anisotropic rectangular plates (1988)
    Springer
    Applied mathematics and mechanics 9 (1988), S. 295-309 
    Details
    ISSN: 1573-2754
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Mathematics , Physics
    Notes: Abstract This paper has studied the nonlinear bending of symmetrically layered anisotropic rectangular plates under various supports. The uniformlys valid N-order asymptotic solutions of the deflection and stress function are derived by the singular perturbation methods offered in [1]. The analysis and calculations are given for simply and clamped supported, rectangular plates subjected to combined edge tensions and lateral loading in conjunction with the modified Galerkin procedure (a method of weighted residuals).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02456143
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  • 8
    Electronic Resource
    Electronic Resource
    Nonlinear bendings for the orthotropic rectangular thin plates under various supports (1984)
    Springer
    Applied mathematics and mechanics 5 (1984), S. 1383-1397 
    Details
    ISSN: 1573-2754
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Mathematics , Physics
    Notes: Abstract In this paper, the nonlinear bendings for the orthotropic rectangular thin plates under various supports are studied. The uniformly valid asymptotic solutions of the displacement w and stress function φ are derived by the perturbation offered in [1].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01904961
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  • 9
    Electronic Resource
    Electronic Resource
    Elastoplastic analysis of cylindrically orthotropic composite thick-walled tube (1985)
    Springer
    Applied mathematics and mechanics 6 (1985), S. 241-248 
    Details
    ISSN: 1573-2754
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Mathematics , Physics
    Notes: Abstract In the present paper, Tsai-Hill Yield Criterion in a state of plane strain is derived for incompressible and compressible materials respectively. the elastoplastic stress and displacement fields of cylindrically orthotropic composite thick-walled tube under uniform radial pressure are studied. The formulas of the yield pressure, limit pressure and region of shakedown are obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01895520
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