Advances in Piezoelectric Transducers Part 9 docx

... 82, pp 20 49- 2055 ( 199 7). [8] E. Moulin, J. Assaad, C. Delebarre et D. Osmont, ‘‘Modelling of Lamb waves generated by integrated transducers in composite plates, using a coupled Finite Element ... example, mass, Advances in Piezoelectric Transducers 98 between the two points A and B. In fact, such a defect introduces local heterogeneity from an acoustic impedance ch...

Ngày tải lên: 12/08/2014, 05:20

...  sin , p C P U Ut t CZ     (36) Advances in Piezoelectric Transducers 38 Fig. 8. Arrangement of forces and bending moments acting on the cut out part of the beam and the piezoelectric ... equation:   cos cosh cos cosh sin sinh . sin sinh nn nn n n n n nn kl kl Xx A kx kx kx kx kl kl    (11) Assuming zero initial conditions and taking into account tha...

Ngày tải lên: 12/08/2014, 04:22

... et al., 198 8), mpr (Rufo et al., 199 0; Sloma et al., 199 0a), nprB (Tran et al., 199 1), nprE (Yang et al., 198 4), vpr (Sloma et al., 199 1), and wprA (Margot et al., 199 6). Deletions in the aprE ... and protein secretion. In protein secretion, PrsA is suggested to mediate protein folding at the late stage of secretion (Konitinen et al., 199 1; Kontinen & Sarvas, 199 3; Vitik...

Ngày tải lên: 22/06/2014, 03:20

... were introduced as: Advances in Piezoelectric Transducers 46 where W is a main matrix determinant and W A is a determinant of the matrix formed by replacing the first column in the main matrix ... three natural frequencies (in a half logarithmic scale) Advances in Piezoelectric Transducers 44 4.1.4 Discrete – continuous mathematical model taking into account a bend...

Ngày tải lên: 12/08/2014, 04:22

... In Eq. ( 29) , the scaling factor   0M is not retained: instead the mode shapes are scaled in order to satisfy the appropriate orthogonality conditions, as discussed in section 4.2. Advances ... bimorph beam with varying piezoelectric layer coverage starting from the base and extending to the point div x , the dividing line between the two segments. Note that the point tra...

Ngày tải lên: 12/08/2014, 05:20

... structure containing symmetrical [ 19] and asymmetrical [20] discontinuities in a simple and a fast way. The key point is to decompose a given damage Advances in Piezoelectric Transducers 90 It ... mode amplitude and to avoid false data interpretation in plates containing a hole of variable diameter. This Advances in Piezoelectric Transducers 94 Fig. 6. Com...

Ngày tải lên: 12/08/2014, 05:20

... Advances in Piezoelectric Transducers 108 ceramics combine the functions of sensor (direct piezoelectric effect) and actuator (reverse piezoelectric effect. In order to obtain the ... by measuring the electrical impedance in an appropriate frequency range. This is the basic principle of damage detection discussed in the next section. Advances in Piezoelectric...

Ngày tải lên: 12/08/2014, 05:20

... Acousto-Optic Interaction, Applications, Vol. 2, 446 p., Springer, Berlin Rytter, A. ( 199 3). Vibration Based Inspection of Civil Engineering Structures. Department of Building Technology ... Monitoring. Structural Health Monitoring, DOI: 10.1177/147 592 1711414234 (published online before print), pp. 1-14, ISSN 1475 -92 17 Cawley, P. ( 199 7). Long Range Inspection of Structures Usin...

Ngày tải lên: 12/08/2014, 05:20

... Advances in Piezoelectric Transducers 22 8. References Abramov, O.V. ( 199 4). Ultrasound in Liquid and Solid Metals, CRC Press, ISBN 08 493 93558, Boca Raton Abramov, O.V. ( 199 8). High-Intensity ... 2002), pp .95 -100, ISSN 0254-0584 Feng, R. ( 199 9). Ultrasonics Handbook, Nanjing University, ISBN 7-305-03354-5, Nanjing Frampton, K.D.; Minor, K. & Martin, S. (2004)....

Ngày tải lên: 26/06/2014, 23:21

... Otsuka, J. & Masuda, T. ( 199 8). The influence of nonlinear spring behavior of rolling elements on ultra-precision positioning control systems, Nanotechnology, 9, pp.85 -92 Sato, K. Tsuruta, K. ... 20 09, 1E-10-2 191 Utkin, V, I. ( 197 7). Variable Structure Systems with Sliding Mode, IEEE Transaction on Automatic Control, Vol.AC-22, pp.212-222 Advances in PID Control 168...

Ngày tải lên: 19/06/2014, 12:20