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  • 2005-2009  (75)
  • 1915-1919
  • 2007  (75)
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  • 2005-2009  (75)
  • 1915-1919
Year
  • 11
    Electronic Resource
    Electronic Resource
    The Preparation of Fluorescent Nano Dye-Silica Particles by Sol-Gel Process (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 124-126 (June 2007), p. 651-654 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: The core-shell structure of dye-silica nanoparticle has been prepared. The dye-silicananoparticle can be used as a substitute of fluorescent dye for bio analysis. The hybrid organicinorganicnanoparticle was prepared by sol-gel process using organic modified silane as the couplingagent for flourescent dye and silica. The size of the particle was about 50 nm, which was measured byDLS and confirmed by SEM photograph. The fluorescent dye (fluorescein-5-maleimide) was reactedwith (3-mercaptopropyl) trimethoxy silane to produce dye-silane compound, followed by the sol-gelreaction with tetraethoxysilane(TEOS) and water to produce core-shell structure. The fluorescentspectrum showed that the fluorescent intensity of dye-silica nanoparticle was higher than that offluorescent dye
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/23/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.124-126.651.pdf
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    Paper (German National Licenses)
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  • 12
    Electronic Resource
    Electronic Resource
    The Effect of Fiber Winding Angles on the Bending Strength of Fiber-Reinforced Plastic Rods (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 345-346 (Aug. 2007), p. 661-664 
    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
    Notes: Fiber-reinforced plastics consist of fibers of high strength and modulus embedded in, orbonded to a matrix with distinct interfaces between them. Because fiber configuration plays a key rolein determining mechanical strength of fiber-reinforced plastic rods, especially bending strength offiber-reinforced plastic rods was measured and simulated numerically in variation with windingangles. Also, stress distribution in fiber-reinforced plastic rods was simulated numerically under thecondition of constant bending load to fiber-reinforced plastic rods. The measured bending strength offiber-reinforced plastic rods in variation with winding angles was different from that of simulated.The difference between measured and simulated results was due to the effect of shear stresses on thestrength of fiber-reinforced plastic rods
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.345-346.661.pdf
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    Paper (German National Licenses)
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  • 13
    Electronic Resource
    Electronic Resource
    Effect of Electromechanical Loadings on Fracture Strength of Piezoelectric Ceramics (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 353-358 (Sept. 2007), p. 1544-1547 
    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
    Notes: The effect of electromechanical loadings including their sequence, which was motivated bythe property of crack energy density for piezoelectric material, was experimentally investigated.Three-point bending fracture test was performed for two piezoelectric ceramics under differentelectromechanical loading conditions. It was found that the fracture loads under closed circuitcondition are greater than those under open circuit condition. Effect of applied electric field onfracture load in the test varied with materials. Applied electric field always enhanced crack extensionin C-21 ceramics regardless of their directions, while it produced very little effect on crack extensionunder negative electric fields in C-2 ceramics. It was also found that electromechanical loadingsequence clearly affects fracture strength, although its effect varies also with materials
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.1544.pdf
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    Paper (German National Licenses)
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  • 14
    Electronic Resource
    Electronic Resource
    Structural Stability Evaluation for Lifting Lug Design of Large Marine Engine by Finite Element Analysis (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 353-358 (Sept. 2007), p. 2855-2859 
    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
    Notes: Since most marine engines are generally very huge and heavy, it is required to keepsafety from accidents in dealing them. Several types of lifting lugs have been used to assemblehundred ton–large steel structures and carry the assembled engines. Recently a few crashes havebeen occurred in carrying engines due to breaking down the lugs. Although the stability evaluationof the lifting lug has therefore been very important for safety, systematic design procedure of thelugs, which includes the structural analysis considering stability, has few reported. This paperdescribes the three dimensional finite element structural modeling for a lifting lug, the studies fordetermining the reasonable loading and boundary conditions, and the stability evaluation with theresults of structural analyses. It should be very helpful for designing the other types of lifting lugswith safety
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.2855.pdf
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    Paper (German National Licenses)
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  • 15
    Electronic Resource
    Electronic Resource
    A Study on the Equipotent Switching Direct Current Potential Drop Method for theMonitoring of Piping Thinning (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 345-346 (Aug. 2007), p. 1331-1334 
    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
    Notes: Flow Accelerated Corrosion (FAC) has become a hot issue because of aging of passivecomponents. Ultrasonic Technique (UT) has been adopted to inspect the secondary piping. UT,however, covers only narrow region, which results in numerous detecting points and thus takestime. In this paper, we suggested a Wide Range Monitoring (WiRM) concept with EquipotentSwitching Direct Current Potential Drop (S-DCPD) method to monitor the thickness of piping.Since the DCPD method covers area, not a point, it needs less monitoring points. We use the SDCPDmethod to screen the candidate area to monitor. Based on the monitoring results, we candetermine the inspection area. To improve the applicability to the piping system, we suggested theEquipotent concept, which eliminates the leakage current. Finite element analysis results anddeveloped resistance model are presented for the simple analysis to describe the wall thinning byDCPD signals. And also validation test results are presented, from which we can identify theconsistency of the model and the experiment
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.345-346.1331.pdf
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    Paper (German National Licenses)
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  • 16
    Electronic Resource
    Electronic Resource
    Fatigue Strength Evaluation of Load-Carrying Fillet Weldments under Out-of-Plane Bending Load Using Structural Stress Method (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 353-358 (Sept. 2007), p. 2069-2072 
    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
    Notes: Two types of load carrying fillet weldment, which are typical weld joints in ship structures, wereexamined under out-of-plane bending load by using structural stress approach. Finite element analyses usingboth solid and shell elements models have been performed for the assessment of fatigue strength. Basis forthe derivation of structural stress method is discussed in detail. The calculated structural stress values for thefatigue strength evaluation of load carrying fillet weldments are independent of mesh size. In this study,drawbacks and doubts associated with applying the structural method such as the guidance of virtual nodemethod and the application of three-dimensional equilibrium condition for solid model have been discussedaccompanied by various case studies. In order to solve the problem of the solid model, the alternative methodfor solid model by using the equilibrium condition of the nodal force has been introduced
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.2069.pdf
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    Paper (German National Licenses)
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  • 17
    Electronic Resource
    Electronic Resource
    Fast Photoacoustic System Based on an Acoustic Lens and the Peak Detection Technology (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 364-366 (Dec. 2007), p. 1157-1161 
    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
    Notes: A fast photo-acoustic (PA) imaging system was developed and tested on phantomsample, which consists of an acoustic lens，a multi-element linear transducer array, and the peakdetection circuit. The multi-element linear transducer array consists of 64 elements. By utilizing anacoustic lens, the PA signals generated from the sample are imaged and detected by a multi-elementlinear transducer array, which directly changes the PA signals into the homologous electronicsignals. Thus we can map the image more rapidly, with the peak detection circuit, which wasdesigned specially. Compared to other exiting technology and algorithm, the PA imaging systembased on an acoustic lens and the peak detection technology was characterized with speediness andreal-time. The images reconstructed in this experiment have high definition and resolution，andmay have potential for developing an appliance for clinical diagnosis
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.364-366.1157.pdf
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    Paper (German National Licenses)
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  • 18
    Electronic Resource
    Electronic Resource
    Dynamic Analysis and Three-Dimensional Finite Element Simulation of Cracked Gear (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 353-358 (Sept. 2007), p. 1072-1077 
    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
    Notes: A method of damage detection and fault diagnosis for gears is presented based on thetheory of elastomeric dynamics according to the theory of cracked beam. It takes an advantage ofaccurate fault diagnosis of gear body using the change of dynamic features and has someadvantages for dynamic design of gear systems.The dynamics characteristics, i.e., natural frequency,vibration shape,dynamic response and so on, due to crack of gear tooth are studied, and the geardynamics characteristics caused by the position and size of crack are deeply investigated bycomparison with FEM. The theoretical analysis results are contrasted with numerical simulationresults and shows good agreement with the result by FEM. The proposed method can be used todetect damage and diagnose fault for gear structures and also can be applied to designing dynamiccharacteristics for gear systems
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.1072.pdf
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  • 19
    Electronic Resource
    Electronic Resource
    Microscopic Three-Dimensional Imaging Theory Based on RIKES (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 364-366 (Dec. 2007), p. 1089-1094 
    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
    Notes: A novel nonlinear confocal microscopic imaging system based on Raman induced Kerreffect spectroscopy (RIKES) is presented in this paper. The three-dimensional (3-D) microscopicimaging theory is derived with the Fourier imaging theory and nonlinear optical principle. Theimpact of RIKES on the spatial resolution and imaging properties of confocal microscopic imagingsystem has been analyzed in detail by the imaging theory. It’s proved that the RIKES nonlinearmicroscopic imaging system can effectively improve the imaging contrast and provide morecharacteristic information on Raman spectrum and optical nonlinear Kerr effect, thus greatlyimproving the imaging quality of confocal microscopic imaging system. It’s shown that the spatialresolution of RIKES confocal microscopic imaging system is higher than that of two-photonconfocal microscopic imaging system
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.364-366.1089.pdf
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    Paper (German National Licenses)
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  • 20
    Electronic Resource
    Electronic Resource
    Upsetting of Ultrafine-Grained Bulk Al-Mg Alloy Consolidated by Hydrostatic Extrusion (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 26-28 (Oct. 2007), p. 719-722 
    Details
    ISSN: 1662-8985
    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: Deformation characteristics and forming limit of ultrafine-grained bulk Al-Mg alloy wereexamined with upsetting process. The Al-7.5%Mg alloy produced by cryogenic milling and HIP wassubjected to hot hydrostatic extrusion as a final consolidation in fabricating the ultrafine-grained bulkmaterial. Upsetting was performed to study their mechanical characteristics in a practical formingprocess. The extruded specimen showed that the pores remained in spite of the HIP had beencollapsed and almost eliminated. The effective removal of the distributed pores resulted in significantincrease of formability by preventing early cracking. Metallographic investigations showed that thesize of grain remained below a few hundred nanometer scale in the processes
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.26-28.719.pdf
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    Paper (German National Licenses)
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