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  • 2005-2009  (8)
  • 2008  (8)
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  • 2005-2009  (8)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Influence of Processing Parameters on Microstructure of Casting Rolling Semi-Solid AZ91D Magnesium Alloy (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 141-143 (July 2008), p. 535-538 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: Semi-solid AZ91D magnesium slurry was prepared by mechanical stirring method andthe evolution of microstructure under different technological parameters such as castingtemperature, standing time, stirring time and stirring speed et al were studied. The results show thatthe technological parameters have great influence on the microstructure of the semi-solidmagnesium slurry. Neither too high nor too low stirring speed is a benefit to form the semi-solidstate; stirring time is also not too long; higher casting temperature is unfavorable; with theincreasing of standing time, the steady-state apparent viscosity of the slurry increases rapidly, thenumber of nucleation increases and the crystalline structure becomes finer
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.141-143.535.pdf
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    An Improved Active Homodyne Detector (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 381-382 (June 2008), p. 329-332 
    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: This paper proposes an improved active homodyne detection technique to compensate forthe drift in homodyne measurement. The technique is implemented on a fiber based Michelsoninterferometer where a computer controller is designed to drive a piezoelectric cylinder attached toone arm of the interferometer. It is shown that the proposed technique can efficiently stabilize theinterferometric output
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.381-382.329.pdf
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Optical Detection Using Multi-Wavelength Modulation (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 381-382 (June 2008), p. 325-328 
    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: In this paper, we proposed a method to attain a high sensitivity of weak optical signaldetection by using the multi-wavelength modulation principle. In this method, the optical phasecarrying the measurand is obtained by averaging the phases obtained in various orders ofheterodyne harmonics. The employment of higher heterodyne harmonics reduces the drift effect inoptical detection. The proposed method is demonstrated on the nano-scale displacementmeasurement by using a single channel fiber interferometer. In the experiment, the displacement issimulated by moving a mirror with a piezoelectric tube. The results show that more repeatablemeasurements with a resolution of 35nm can be obtained by using the proposed method
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.381-382.325.pdf
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Improved Accuracy of 2-D Non-Contact Range Sensors Using 2-D Lateral Effect Position Sensitive Detector (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 381-382 (June 2008), p. 333-336 
    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: This paper presents a new set of estimation formulae for non-contact 2D displacementmeasurement by using the principle of triangulation and the position sensitive detector (PSD) as a2-D range sensor. It has been shown in theory that the new set of formulae outperforms theconventional formulae by providing much more accurate estimate of the 2D displacement. Thetheoretical analysis has been verified by simulation studies
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.381-382.333.pdf
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    A Dynamic Model of Two-Beam Tuning Fork (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 381-382 (June 2008), p. 337-340 
    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 shear force detection by using a tuning fork plays a key role in the implement allkinds of scanning probe microscopes. This paper presents primary results of modeling dynamics ofa tuning fork. The obtained model considers not only the piezoelectric properties and mechanicalproperties of the tuning fork, but also the electric-mechanical coupling between the two prongs ofthe tuning fork. It has been shown by theoretical studies and experiment results that the theoreticalmodel can fit the amplitude and phase responses of a tuning fork
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.381-382.337.pdf
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Study on Center Hole Deformation Test of Rigid Bearing Plate (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 33-37 (Mar. 2008), p. 1187-1194 
    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: The center hole deformation test of rigid bearing plate is an important method forunderstanding deformation properties of deep weak rock mass. According to the center holedeformation test of rigid bearing plate in dam zone of Dagangshan hydropower station, this paperdetailedly recommends test method of this experiment, and the settlement deformation formula ofdeep rock mass under circular rigid bearing plate is deduced, which could be used to calculatedeformation modulus and equivalence deformation modulus of different deep rock mass at testpoints. According to curves of depth-deformation under different pressures at test points in dam zone,we have analyzed deformation characteristics of deep weak rock mass. By the center hole deformationtest of rigid bearing plate, stratum properties in dam zone of Dagangshan hydropower station could beunderstood further, and it provides important references for the study of creep speciality of weak rockmass in dam zone
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.33-37.1187.pdf
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Preparation and Property of Electrodeposited Zn-Fe-SiO〈sub〉2〈/sub〉 Composite Coating (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 373-374 (Mar. 2008), p. 212-215 
    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: Electrodeposited Zn and Zn-Fe alloy have been applied widely to protect steel fromcorrosion, but the property of coating still needs to be improved. In this paper, Zn-Fe-SiO2 compositecoatings are electrodeposited from Zn-Fe alloy electrolyte containing SiO2 particles. Zinc basedcoatings with Fe% 〉1%(mass) are deposited from sulfate bath, and coatings with Fe% 〈1%(mass) aredeposited from chloride bath. Particle content in the composite coating generally increases withparticle concentration under an adequate agitation and then tends to saturation. The optimum particlecontent in the composite coating is 0.5%(mass). Corrosion resistance, porosity, hydrogenembrittlement and surface morphology of Zn-Fe-SiO2 composite coatings have been tested andcompared with electrodeposited Zn and Zn-Fe alloy. The data implies that Zn-Fe-SiO2 compositecoating has the best corrosion resistance, lowest porosity, lowest hydrogen content and the finestcrystal. All the results show that Zn-Fe-SiO2 composite coating is satisfactory to be used asanti-corrosion material for steel and has a great future in application
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.373-374.212.pdf
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Study on Semi-Solid Continuous Roll-Casting Strips of AZ91D Magnesium Alloy (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 141-143 (July 2008), p. 469-473 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: Semi-solid Continuous roll-casting process applied to produce the AZ91D magnesiumstrips and its microstructure was studied in this paper. In order to examine further process abilityand forming property of the roll-casting strips, hot and cold rolling and punching experiments wereinvestigated. It was clarified that it is significant to combine the semi-solid process techniques withroll-casting techniques, through which we can get high quality magnesium alloy strips with nondendriticstructure and improve the overall properties of the products. The largest deformation bycold rolling and hot rolling can reach 18% and 21% respectively with one-pass roller
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.141-143.469.pdf
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