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  • 1
    Electronic Resource
    Electronic Resource
    Research on the Mechanisms of Laser Forming for the Micro-Structural Element (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 575-578 (Apr. 2008), p. 1145-1150 
    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: Laser forming of a micro-structural element involves a complex thermoplastic process.Numerous efforts had been made on the mechanisms of laser forming for macro-size elements, suchas temperature gradient mechanism, buckling mechanism and upsetting mechanism, etc. It is foundthat the three mechanisms cannot depict fully the process of deformation in the macro-size elementforming, let alone meet the needs of the micro-size one. Considering the laser inducing thermalstresses with size factors differing from the conventional analysis, it is essential to reveal themechanisms dominating the forming process to accurately control the bending angle of a tiny plate.By studying the thermal transfer and elastic-plastic deformation of micro-structural element laserforming, the forming mechanism is explained within the micro size. The finite element model forlaser bending is constructed for simulation. The stimulation results are agreement with theexperimental data
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/18/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.575-578.1145.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Some applications of semi-analytical finite element method in static and dynamic analysis of structures (1992)
    Springer
    Acta mechanica solida Sinica 5 (1992), S. 75-84 
    Details
    ISSN: 0894-9166
    Keywords: semi-analytical finite element method ; shells of revolution ; curved pipe ; static and dynamic analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract In this paper a kind of semi-analytical finite element method based on the transfer matrix analysis of shells of revolution is briefly formulated. Some recent investigations on its application are presented: (1) a reanalysis algorithm for improving the accuracy of free vibration analysis; (2) a kind of semi-analytical ring element for the stress analysis of a curved pipe of the slender torus shell type.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02215629
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  • 3
    Electronic Resource
    Electronic Resource
    Some applications of boundary element methods, boundary element-finite element coupling techniques in elasto-plastic stress analysis (1990)
    Springer
    Acta mechanica solida Sinica 3 (1990), S. 327-340 
    Details
    ISSN: 0894-9166
    Keywords: boundary element method ; elasticity ; elasto-plasticity ; BE-FE coupling technique ; error estimation of BE solution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract In this paper some research works of author's group on boundary element method for linear elastic and elasto-plastic problems are briefly summarized. The BE subrogions method and BE-FE coupling techniques are introduced, and some idea of the error estimation of BE solutions is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02206402
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  • 4
    Electronic Resource
    Electronic Resource
    Carbon nanotube intramolecular junctions (1999)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 402 (1999), S. 273-276 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The ultimate device miniaturization would be to use individual molecules as functional devices. Single-wall carbon nanotubes (SWNTs) are promising candidates for achieving this: depending on their diameter and chirality, they are either one-dimensional metals or semiconductors. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/46241
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  • 5
    Electronic Resource
    Electronic Resource
    Comparative Experiments for Different End Mills of Indexable Inserts with 3-D Chip Breaker (2004)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 471-472 (Dec. 2004), p. 775-778 
    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: End mills are very widely used in machining metal. In this paper, based on analysis of three different end milling indexable inserts with 3-D chip breaker, the influence of different chip breaker on cutting force, chip deformation and machined accuracy are studied by comparative experiments. The results show that the cutting effect of end mills with indexable inserts can be improved by optimization of 3-D chip breaker and suitable for different machining condition
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/09/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.471-472.775.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Investigational Advances in Residual Stresses by Hard Turning (2004)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 471-472 (Dec. 2004), p. 523-527 
    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: Hard turning has been recognized as a substitute for abrasive-based processes not only due to its flexibility, economic benefit and environmental consciousness, but also its determinate surface integrity (surface roughness, micro hardness and residual stress), which is superior and more consistent than ground surfaces. Residual stress is of considerable industrial importance because they can affect failure by fatigue, creep or cracking. It is believed that compressive residual stresses are more favorable for fatigue life than tensile residual stresses. Hard turning generally generates compressive residual stress, which is the dominant role in determining both the variance and average value of fatigue life. This paper focus on the published data, especially C.R.Liu’s research, which address the residual stresses by hard turning in terms of experimental approaches， theoretical modeling，numerical simulation by Finite Element Analysis (FEA) and the correlation with its fatigue life and performance. The potential trends and key technologies for residual stresses are predicated and discussed so as to capture the most effective approach to investigate residual stress by hard turning
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/09/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.471-472.523.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Minimum Lubrication Milling of Titanium Alloys (2004)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 471-472 (Dec. 2004), p. 87-91 
    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: During excessive fluid application processing, fluid ends up on the floor, the workers, and the machine, entail serious techno-environmental and biological problems. Very little fluid enters the tool/part interface. Recently, this excess fluid has become another costly control problem. Chemicals of all types introduced into the atmosphere must also be reduced to an absolute minimum. In this paper, the technique of minimum quantity of lubrication (MQL), which is the pulverization of a minimum volume of oil in a flow of compressed air, has been studied in face mill Ti-6Al-4V titanium alloys as one alternative to the use of abundant cooling to suppress the cutting heat resulted from low thermal conductivity and the density of the workpiece material. The results showed that MQL of 125ml/h flow amount was found to be the optimum, and there is no significant difference in temperature between MQL of this flow and wet cooling when low cutting speeds used
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/09/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.471-472.87.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    Application of the Hilbert-Huang Transform to Pick up Surface Roughness (2004)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 471-472 (Dec. 2004), p. 668-671 
    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: The surface roughness is evaluated by decomposing micro-errors from irregular surface image. The wave of surface is designated as signals including high-frequency, mid-frequency, and low-frequency signal, that denote roughness, waveness and the geometry shape error. Hilbert-Huang transform is a promising revolutionary technique for spectral data analysis, which is used to extract roughness from surface. It overcomes the imprecise result of the traditional surfaceroughness calculation and avoids the complication of the Wavelet analysis. Theory of Empirical Mode Decomposition (EMD) is given in the paper. This method is initially applied in picking up surface roughness, and it is proved to be of very high efficiency and simplicity
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/09/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.471-472.668.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Path of magnetic flux lines through high- T c copper oxide superconductors (1994)
    [s.l.] : Nature Publishing Group
    Nature 371 (1994), S. 777-779 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Conventionally, the Bitter technique involves decorating individual vortices with small magnetic particles as they emerge from one surface of a superconductor14'15. A common weakness of previous decoration studies is, however, their measurement of only a single ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/371777a0
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  • 10
    Electronic Resource
    Electronic Resource
    An Inverse Heat Conduction Problem in Controlling the Transient Cutting Temperature (2004)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 259-260 (Mar. 2004), p. 401-405 
    Details
    ISSN: 1013-9826
    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
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/47/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.259-260.401.pdf
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