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  • 1
    Electronic Resource
    Electronic Resource
    Evaluation of T Stress for a Finite Internally Cracked Plate by Using EEVM Method (1997)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 145-149 (Oct. 1997), p. 47-50 
    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/2011/0528/01/44/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.145-149.47.pdf
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Metal-PZT Composite Piezoelectric Transducers and Ultrasonic Motors (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 334-335 (Mar. 2007), p. 1073-1076 
    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: Rotary and linear ultrasonic motors were developed in the present paper using metal-PZTcomposite piezoelectric stator transducer configuration. The transducer consists of a concentric PZTtube and a metal tube, which structurally improve the reliability of the stator transducer. Thedeveloped transducer can provide a free vibration velocity of 0.9 m/s under 100 Vp-p at the resonantstate. The rotary motor and linear motor use the developed transducer as the driving component,which produces the rotational motion to drive the motor. The rotary motor is able to achieve about700 rpm no-load speed, above 2 mNm torque, maximum 70 mW output power and 50% efficiencyunder driving voltage of 80 Vp-p. The linear motor produces rotational motion and linear motionsimultaneously. The linear speed of 5 mm/s can be achieved under the driving voltage of 50 Vp-punder no-load state. Under the loaded state, maximum 8 N load has been observed to be moved by themotor at a speed of 0.6 m/s. The maximum output power and efficiency of the linear motor are 9 mWand 11%, respectively
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.334-335.1073.pdf
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Development of FGM Monomorph Actuator for Impedance Pump Application (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 334-335 (Mar. 2007), p. 1077-1080 
    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 the present work, the FGM monomorph actuator was developed and applied in theimpedance pump. The actuator was fabricated using electrophoretic deposition (EPD). Two startingmaterials, pure PZT and doped PZT, were mixed to form four different compositions. The actuatorwas then fabricated by sequential deposition of the four compositions layer by layer on the substrateand followed by sintering to full density. The actuator shows both piezoelectric property andmicrostructural gradient across the layers. The actuator is able to achieve a bending displacement ofnearly 2 mm at resonant frequency. It has been successfully applied to the impedance pump as theactuating component. The pumping action comes from the periodic compression by the actuator toinduce a net flow. Maximum flow was observed at the resonant frequency of the actuator. A flow rateof about 9 ml/min was generated
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.334-335.1077.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Development of Miniaturized Piezoelectric Multimode Transducer for Projection Purpose (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 47-50 (June 2008), p. 61-64 
    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: Most of the ultrasonic surgical or therapeutic devices apply the outside body designs withonly the vibration tip contacting and delivering energy to the tissue. For inside body applications, aminiaturized 421 kHz piezoelectric transducer with OD 2 mm and length 10.35 mm based onlongitudinal vibration mode was developed in this paper. The transducer is a one-wavelength designwith a stepped horn to focus the energy. The theoretical analyses on mechanical, electrical andacoustic properties were performed using finite element analysis (FEA) and equivalent circuit (EC)model, which showed consistent results. The Qm and keff were found to be 393 and 0.21, respectively.The maximum acoustic output power was observed to be 27 mW at 10 V input when the depth ofimmersion is 1/4 wavelength. Ultrasonic streaming was also observed when the whole transducer wasimmersed in the water and the input power level was in the order of 0.6 W
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.47-50.61.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Piezoelectric Materials for Biomedical Applications (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 334-335 (Mar. 2007), p. 1117-1120 
    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 piezoelectric microactuator for minimally invasive surgery procedures was developedusing the piezoelectric tube actuator. The tube was fabricated by electrophoretic deposition of a dopedPZT powders on the graphite rod substrate and co-sintering. The obtained tube shows maximumstrain 0.045% in 31 mode and coercive field 1.5 kV/mm under static condition. Under dynamiccondition, bending and longitudinal vibration modes can be identified from impedance spectrum andsimulation. Theoretical analysis indicates that the displacement of the two modes depends on thegeometry, material property, driving condition and damping conditions. The developed device usesbending mode to create rotation mechanical motion, and longitudinal mode to produce ultrasonicenergy to soften and break up the target into fragments
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.334-335.1117.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Electrophoretic Deposition of Functionally Graded Monomorph (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 314 (July 2006), p. 89-94 
    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 the present work, investigation of the functional property of piezoelectric gradedmonomorph actuator systems is presented. The functional graded actuators were fabricated byelectrophoretic deposition (EPD) using pure PZT and doped PZT materials. Actuators developedhave shown gradual gradient variation in microstructure. It is noted that trend in microstructuralgradient does not represent similar trend in piezoelectric property gradient. The displacement ofmicrostructural graded and both piezoelectric and microstructural graded actuators were measured.The results show that the gradient distribution of the piezoelectric properties is important toimprove the electromechanical performance of the actuator
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.314.89.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Electrophoretic Deposition and Characterization of a FGM Piezoelectric Monomorph Actuator (2003)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 437-438 (Oct. 2003), p. 487-490 
    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
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/07/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.437-438.487.pdf
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