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Journal articles on the topic 'Plate radiation'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

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1

Atalla, Noureddine, and Alain Berry. "Acoustic Radiation from a Coupled Planar Semi-Complex Structure in Heavy Fluid." Journal of Ship Research 38, no. 03 (September 1, 1994): 213–24. http://dx.doi.org/10.5957/jsr.1994.38.3.213.

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A mathematical model is derived to address the vibrations and sound radiation into a dense fluid, of a coupled system consisting of two semi-complex plates (i.e., supporting added mass, stiffeners, and having arbitrary elastic boundary conditions) linked in four points through multistage suspensions elements. The supporting plate is subjected to point, line or surface harmonic excitation, while the radiating plate is excited through the suspensions. Both plates are assumed to be baffled, and the radiating plate is fluid loaded. The model is based on a variational approach for the plates, and a matrix transfer approach is used to handle the coupling between the two-plates. The solution is found using a Rayleigh-Ritz expansion in terms of polynomial trial functions which are shown to allow for the arbitrary elastic boundary conditions and to facilitate the calculation of the radiation impedance matrix. The vibrations and noise design of the system is discussed. The main design indicators are the force transmissibilities between the different excitation and attachment points, the mean square velocity, the radiated power and the radiation efficiency of the radiating plate. Numerical examples are presented to show the effects of fluid loading and different design parameters (plates thickness, boundary conditions, added mass, stiffeners, etc.) on the radiated sound.

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2

Pipa, V. I., and A. I. Liptuga. "Rotation of a Thin Heated Plate by Its Own Thermal Radiation." Ukrainian Journal of Physics 63, no. 12 (December 9, 2018): 1105. http://dx.doi.org/10.15407/ujpe63.12.1105.

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The results of the theoretical investigation of a heated solid plate rotation caused by its own thermal radiation are presented. The rotational moment of the plate with uniform temperature is due to the asymmetry of a recoil of photons of thermal radiation from different areas of its wide faces. The time dependences of the rotation angle of a rectangular plate with stable temperature and at radiative cooling are calculated. The rotation angle dependences on the plate geometric and optical parameters are studied. It is shown that the rotation angle depends nontrivially on the plate thickness because of the thickness-dependent plate emittance. The numerical calculations are performed for a silicon plate. The biggest rotation effect (rotation angle of 118.5∘ for 70 s) is obtained for a mirror black plate 0.1 mm thick at a preset plate temperature of 350 K and a background temperature of 300 K. The considered model can be useful to develop thermal motors, whose rotors consist of a set of heated plates with photon recoil asymmetry.

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3

MORI, CHIZUO. "Radiation Measurement with Imaging Plate." RADIOISOTOPES 44, no. 4 (1995): 295–96. http://dx.doi.org/10.3769/radioisotopes.44.295.

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4

V, Ch Ramana Murthy. "MHD Flow Past an Infinite Inclined Moving Plate With Radiation Effects." Journal of Advanced Research in Dynamical and Control Systems 12, no. 3 (March 20, 2020): 560–70. http://dx.doi.org/10.5373/jardcs/v12i3/20201224.

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5

Meirovitch, L., and S. Thangjitham. "Control of Sound Radiating from an Orthotropic Plate." Journal of Vibration and Acoustics 114, no. 4 (October 1, 1992): 531–39. http://dx.doi.org/10.1115/1.2930295.

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This paper is concerned with the problem of actively suppressing the acoustic radiation pressure generated by an orthotropic plate vibrating in air. The approach is to control the vibration of the modes of the plate most responsible for acoustic radiation pressure. This is accomplished by relating the far-field radiation pressure to the state of the plate. The control of the far-field radiation pressure is carried out by means of actuators placed on the elastic plate. A numerical example demonstrates the application of active control to suppress the far-field sound radiating from a simply-supported rectangular thin orthotropic plate subjected to a harmonic disturbance. The influence on the control effectiveness of various design parameters, such as the number of controlled modes, the choice of controlled modes, and the number of actuators, is investigated.

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6

Park, Sang-Jin, Hoe-Woong Kim, and Young-Sang Joo. "Leaky Lamb Wave Radiation from a Waveguide Plate with Finite Width." Applied Sciences 10, no. 22 (November 16, 2020): 8104. http://dx.doi.org/10.3390/app10228104.

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In this paper, leaky Lamb wave radiation from a waveguide plate with finite width is investigated to gain a basic understanding of the radiation characteristics of the plate-type waveguide sensor. Although the leaky Lamb wave behavior has already been theoretically revealed, most studies have only dealt with two dimensional radiations of a single leaky Lamb wave mode in an infinitely wide plate, and the effect of the width modes (that are additionally formed by the lateral sides of the plate) on leaky Lamb wave radiation has not been fully addressed. This work aimed to explain the propagation behavior and characteristics of the Lamb waves induced by the existence of the width modes and to reveal their effects on leaky Lamb wave radiation for the performance improvement of the waveguide sensor. To investigate the effect of the width modes in a waveguide plate with finite width, propagation characteristics of the Lamb waves were analyzed by the semi-analytical finite element (SAFE) method. Then, the Lamb wave radiation was computationally modeled on the basis of the analyzed propagation characteristics and was also experimentally measured for comparison. From the modeled and measured results of the leaky radiation beam, it was found that the width modes could affect leaky Lamb wave radiation with the mode superposition and radiation characteristics were significantly changed depending on the wave phase of the superposed modes on the radiation surface.

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7

Maynard, J. D. "Controlling plate radiation with Anderson localization." Journal of the Acoustical Society of America 77, S1 (April 1985): S4. http://dx.doi.org/10.1121/1.2022375.

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8

Ingard, K. Uno, and Adnan Akay. "On the Vibration Damping of a Plate by Means of a Viscous Fluid Layer." Journal of Vibration and Acoustics 109, no. 2 (April 1, 1987): 178–84. http://dx.doi.org/10.1115/1.3269411.

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Vibration damping of a plate by means of a fluid layer is investigated. First, the frequency-dependent flow resistance of a fluid layer is explained with a simple illustration of the damping mechanism. Then, the vibration response of a plate is examined when it is backed by a rigid plane or another flexible plate with a fluid layer constricted in-between. Effects of the plate motion and acoustic radiation on the damping mechanism are also considered. The numerical results are presented in terms of frequency response of the plates.

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9

Rumerman, M. L. "Radiation Efficiencies for Steel Plates in Water." Shock and Vibration 14, no. 2 (2007): 81–88. http://dx.doi.org/10.1155/2007/102371.

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Statistical Energy (or similar) Analysis may use radiation efficiencies as a means of estimating acoustic power radiated by plates in bending vibration. It is common to calculate them using uncoupled sinusoidal mode shapes of simply supported plates to account for the plate boundaries and rib stiffeners. This paper shows that, when applied to steel plates bounded by water on one side, this procedure can significantly overestimate the acoustic power radiated for frequencies below about one-eighth of the coincidence frequency. With water on both sides of the plate, the cutoff is increased to about one-fourth of coincidence.

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10

MIYAHARA, Junji. "Application of Imaging Plate to Radiation Management. Development of Imaging Plate." Japanese Journal of Health Physics 34, no. 1 (1999): 24–28. http://dx.doi.org/10.5453/jhps.34.24.

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11

Ingard, K. Uno, and A. Akay. "Acoustic Radiation From Bending Waves of a Plate." Journal of Vibration and Acoustics 109, no. 1 (January 1, 1987): 75–81. http://dx.doi.org/10.1115/1.3269398.

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In the commonly used definition of acoustic “radiation efficiency” of a plate, it is assumed that the amplitude of a traveling harmonic wave on the plate is kept constant, independent of the acoustic radiation load on the plate. As a result, this definition leads to an infinite value of the radiation efficiency when there is coincidence between the speed U of the traveling wave and the sound speed c in the surrounding fluid. The result of infinite radiation efficiency can be avoided if we consider the more realistic situation in which the plate is driven by a traveling force distribution, in which the amplitude of the force rather than the displacement is independent of the radiation load. This situation is considered here, and a modified definition of radiation efficiency is proposed. The displacement amplitude of the plate will have a maximum when the speed U of the force distribution equals the speed cb of free running bending wave on the plate. Then, if U < c, there is no power in the radiated wave and the power transferred from the plate to the fluid goes into heat as a result of viscothermal losses in the fluid. On the other hand, if U > c, the bulk of the power goes into the plane wave radiated from the plate. Finally, if U → c, the displacement and radiated power → 0 since the radiation impedance → ∞. In regard to the role of the viscothermal effects, it is interesting to find that at the coincidence frequency the contributions to the reactive part of the load impedance on the plate from the viscothermal boundary layer and the viscothermal losses in the bulk of the surrounding fluid almost cancel each other and the contributions to the resistive load are approxiamtely equal when U ∼ c.

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12

Hwang, Y. F., M. Kim, and P. J. Zoccola. "Acoustic Radiation by Point- or Line-Excited Laminated Plates." Journal of Vibration and Acoustics 122, no. 3 (March 1, 2000): 189–95. http://dx.doi.org/10.1115/1.1303823.

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This paper presents an elasticity theory solution for computation of acoustic radiation by a point- or line-excited fluid-loaded laminated plate, which may consist of a stack of an arbitrary number of different isotropic material layers. A one-side water-loaded three-layer sandwich plate, which consists of a hard rubber core sandwiched between two steel plates of equal thickness, was used as an example of the laminated plates. The approximated equivalent sandwich plate solutions were compared with the elasticity theory solutions. These results show that the approximated solutions are, as expected, valid only at frequencies much lower than the coincidence frequency. The numerical result also shows that, even at about one-tenth of the coincidence frequency, the approximated solutions suffer substantial error. The differences between the dry-side- and the wet-side-excited radiated fields of a single-layer uniform plate and a sandwich plate were investigated and compared, and found to be significantly different at frequencies above the coincidence frequency. [S0739-3717(00)01803-1]

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13

Chankow, Nares, Suvit Punnachaiya, and Sarinrat Wonglee. "Neutron radiography using neutron imaging plate." Applied Radiation and Isotopes 68, no. 4-5 (April 2010): 662–64. http://dx.doi.org/10.1016/j.apradiso.2009.09.021.

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14

Mori, Chizuo. "Imaging Plate, Its Glory and Transition." RADIOISOTOPES 70, no. 4 (May 15, 2021): 239–49. http://dx.doi.org/10.3769/radioisotopes.70.239.

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15

Sun, Yonggan, Sheng Li, and Ziquan Jiao. "Acoustic response of multi-stopband local resonance plate." Modern Physics Letters B 31, no. 31 (November 6, 2017): 1750295. http://dx.doi.org/10.1142/s0217984917502955.

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This paper primarily investigates the effect of damping ratios on the acoustic response of a multi-stopband local resonance plate consisting of two-dimensional periodic arrays of tuned mass-spring combinations attached to a thin homogeneous plate. A Floquet–Bloch approach is employed to demonstrate the stopbands for an infinite plate. In addition, the acoustic radiation behavior and average sound radiation pressure level of finite plates are computed. A continuous and much wider stopband with good vibro-acoustic behavior can be obtained when care is taken in the design of the damping ratios of local resonance plates.

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16

Andreev, P. S., O. Yu Pikul’, L. L. Kovalenko, M. A. Voityuk, V. I. Stroganov, and P. G. Pas’ko. "Control of radiation ellipticity by rotation of a plane-parallel crystal plate." Russian Physics Journal 51, no. 11 (November 2008): 1239–41. http://dx.doi.org/10.1007/s11182-009-9159-x.

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17

Zhu, Yong Yong. "Research on Vibro-Acoustic Characteristics of Underwater Finite Plate-Shell Structure under Multiple Excitations." Advanced Materials Research 834-836 (October 2013): 1351–59. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.1351.

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An analysis based on the first kind of Lagranges equations was presented for investigating the vibration and acoustic radiation of underwater finite cylindrical shell with interior plate under multiple excitations. The strain energy and kinetic energy of cylinder and plate were gained by the theory of plates and shells, and the potential energy of excitation and fluid loading was found based on acoustic-vibration coupling, and the connection conditions of plate and cylinder were expressed by Lagrange multipliers, then the vibro-acoustic equations of finite cylinder with interior plate under shafting excitation were established. The influences of excitations and plates position to the vibro-acoustic characteristics were studied by the equations. The results show that the frequency components of plate-shell structure are more complex. For the double excitations on plate, the distance between excitations is larger, the average velocity and sound radiation power are lower, while the radiation efficiency is larger. The modeling and analytical methods adopted in this paper are also available for more complex composite structure.

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18

Norouzi, Hamed, and Davood Younesian. "Sound Radiation Mitigation of Geometrically Nonlinear Plates Subjected to Subsonic Airflow." Mathematical Problems in Engineering 2021 (July 20, 2021): 1–12. http://dx.doi.org/10.1155/2021/3090958.

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This paper gives a theoretical analysis to obtain and reduce the acoustic pressure generated from plates with geometric nonlinearities subjected to subsonic airflow and external excitation. von-Kármán assumptions are applied considering the nonlinear terms in strain-displacement relations. Airflow passing through the plate is considered as an incompressible, irrotational, and inviscid flow. Galerkin’s method is employed to acquire the governing equations of time-dependent coefficients. Multiple Time Scale Method (MTSM) is then used to obtain the response of the plate. Suppressing undesirable vibration is carried out using an optimal tuned mass damper (TMD) system and an analytical solution is proposed based on Laplace transform and Adomian Decomposition Method (ADM). The acoustic pressure received from the plate is calculated by solving the Rayleigh integral using Boundary Element Method (BEM). A parametric study is carried out, and the effects of the flow speed, the aspect ratio, the thickness of the plate, the material of the plate, the forcing frequency, and the effectiveness of the designed TMD system on the sound pressure are examined. According to the results, using the TMD system reduces the amplitudes of the plate vibrations and, consequently, reduces the acoustic pressure around the vibrating plate. In this study, the passive control strategy leads to a significant decrease in the sound pressure level (about 35%) in some airflow speeds. Results show good efficiency in the control strategy. It is also found that the acoustic pressure generated from steel plates is significantly larger than that generated from aluminum plates. Moreover, increasing the aspect ratio and the plate thickness reduces the acoustic pressure. On the other hand, the external excitations with lower frequencies and the airflows with higher densities can generate lower sound pressures around the plate.

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19

Zhou, Yue, Ran Duan, Xi Juan Zhu, Jing Ma, and Xia Li. "Effects of Material Emissivity on the Radiative Characteristics of Solid Surface." Materials Science Forum 976 (January 2020): 38–41. http://dx.doi.org/10.4028/www.scientific.net/msf.976.38.

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Radiation leaving the solid surface provides an important reference for detection in both military and civilian areas. In this paper, total radiation leaving a solid plate is calculated with different emissivities considering the environment radiation. The results prove that a lower emissivity of the surface material has a stronger reflection of irradiance from the Sun, and therefore may enhance the total radiation leaving the plate. This is different from most cases where a lower emissivity always leads to a smaller radiation effects. The emissivity of material coated to the solid surface should be properly chosen according to the detailed surrounding environment as well as the radiative properties of the solid parts in order to achieve a minimum radiation effects.

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20

Zaman, I., S. A. M. Rozlan, A. Yusoff, M. A. Madlan, and S. W. Chan. "Theoretical Modelling of Sound Radiation from Plate." IOP Conference Series: Materials Science and Engineering 165 (January 2017): 012023. http://dx.doi.org/10.1088/1757-899x/165/1/012023.

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21

Frendi, A., L. Maestrello, and A. Bayliss. "Coupling Between Plate Vibration And Acoustic Radiation." Journal of Sound and Vibration 177, no. 2 (October 1994): 207–26. http://dx.doi.org/10.1006/jsvi.1994.1428.

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22

Chopra, Jatin J., Samiran Mukherjee, Ranjana Gangradey, Alkesh Mavani, and Jyoti Agarwal. "Thermohydraulic analysis of hydroformed radiation shield plate." Indian Journal of Cryogenics 42, no. 1 (2017): 139. http://dx.doi.org/10.5958/2349-2120.2017.00022.x.

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23

Pépin, A., D. Decanini, and Y. Chen. "Zone-plate-array lithography using synchrotron radiation." Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures 18, no. 6 (2000): 2981. http://dx.doi.org/10.1116/1.1321275.

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24

Bogatiryov, A. I., I. V. Vovk, and V. N. Oliynik. "Sound Radiation by Circular Bimorphic Piezoceramic Plate." International Journal of Fluid Mechanics Research 31, no. 4 (2004): 332–42. http://dx.doi.org/10.1615/interjfluidmechres.v31.i4.30.

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25

OHUCHI, Hiroko. "Application of Imaging Plate to Radiation Management. The Fading of Imaging Plate." Japanese Journal of Health Physics 34, no. 1 (1999): 52–55. http://dx.doi.org/10.5453/jhps.34.52.

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26

Syuy, Alexander, Dmitriy Shtarev, Victor Krishtop, and Natalia Kireeva. "Conformity Check of Thickness to the Crystal Plateλ/4(λ/2)." Journal of Spectroscopy 2013 (2013): 1–4. http://dx.doi.org/10.1155/2013/875809.

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This work demonstrates that if crystal plates are identical in thickness in the direction of radiation, the intensity at the output of the polarizer-crystal-crystal-analyzer system equals zero. This means that it is possible to control the difference in thickness between the reference crystal plate (e.g., plates ofλ/4orλ/2) and the examined plate by the intensity of the transmitted radiation. Further, it shows that if nonmonochromatic radiation is used, then the spectrum of radiation at the output is determined by the relative orientation of the optical elements and their sizes. The paper gives the theoretical model for calculations of profile of spectra for the number of important cases of orientation of elements.

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27

Mushtaq, Ammar, Junaid Khan, Meraj Mustafa, Tasawar Hayat, and Ahmed Alsaedi. "Consequences of convection-radiation interaction for magnetite-water nanofluid flow due to a moving plate." Thermal Science 22, no. 1 Part B (2018): 443–51. http://dx.doi.org/10.2298/tsci151128212m.

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Present paper examines the boundary-layer flow of magnetic nanofluid over a radiative plate moving in a uniform parallel free stream. Water is considered as the base fluid which is being filled with magnetite-Fe3O4 nanoparticles. Energy balance equation is formulated with non-linear radiation heat flux. Mathematical analysis is carried out through the famous Tiwari and Das model. Similarity approach is utilized to construct self-similar form of the governing differential system. Numerical computations are made through standard shooting method. Ferrofluid velocity is predicted to enhance upon increasing the nanoparticle volume fraction which contradicts with the available literature for non-magnetic nanofluids. It is found that Fe3O4-water ferrofluid has superior heat transfer coefficient than pure water. Results reveal that consideration of magnetic nanoparticles in water leads to better absorption of incident solar radiations. The well-known Blasius and Sakiadis flows are also explicitly analyzed from the present model.

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28

Muthucumaraswamy, R. "The interaction of thermal radiation on vertical oscillating plate with variable temperature and mass diffusion." Theoretical and Applied Mechanics 33, no. 2 (2006): 107–21. http://dx.doi.org/10.2298/tam0602107m.

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Thermal radiation effects on unsteady free convective flow of a viscous incompressible flow past an infinite vertical oscillating plate with variable temperature and mass diffusion has been studied. The fluid considered here is a gray, absorbing-emitting radiation but a non-scattering medium. The plate temperature is raised linearly with respect to time and the concentration level near the plate is also raised linearly with respect to time. An exact solution to the dimensionless governing equations has been obtained by the Laplace transform method, when the plate is oscillating harmonically in its own plane. The effects of velocity, temperature and concentration are studied for different parameters like phase angle, radiation parameter, Schmidt number, thermal Grashof number, mass Grashof number and time are studied. It is observed that the velocity increases with decreasing phase angle ?t. .

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29

Yang, Tieliang, Qibai Huang, and Shande Li. "Three-Dimensional Elasticity Solutions for Sound Radiation of Functionally Graded Materials Plates considering State Space Method." Shock and Vibration 2016 (2016): 1–15. http://dx.doi.org/10.1155/2016/1403856.

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This paper presents an analytical study for sound radiation of functionally graded materials (FGM) plate based on the three-dimensional theory of elasticity. The FGM plate is a mixture of metal and ceramic, and its material properties are assumed to have smooth and continuous variation in the thickness direction according to a power-law distribution in terms of volume fractions of the constituents. Based on the three-dimensional theory of elasticity and state space method, the governing equations with variable coefficients of the FGM plate are derived. The sound radiation of the vibration plate is calculated with Rayleigh integral. Comparisons of the present results with those of solutions in the available literature are made and good agreements are achieved. Finally, some parametric studies are carried out to investigate the sound radiation properties of FGM plates.

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30

Muthucumaraswamy, R., and V. Visalakshi. "MHD and Thermal Radiation Effects on Exponentially Accelerated Isothermal Vertical Plate with Uniform Mass Diffusion." International Journal of Applied Mechanics and Engineering 18, no. 2 (June 1, 2013): 599–608. http://dx.doi.org/10.2478/ijame-2013-0037.

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Thermal radiation effects on an unsteady free convective flow of a viscous incompressible flow of a past an exponentially accelerated infinite isothermal vertical plate with uniform mass diffusion in the presence magnetic field are considered. The fluid considered here is a gray, absorbing-emitting radiation but a non-scattering medium. The plate temperature is raised to Tw and the concentration level near the plate is also raised to Cʹw . An exact solution to the dimensionless governing equations is obtained by the Laplace transform method, when the plate is exponentially accelerated with a velocity u= u0 exp(aʹtʹ) in its own plane against gravitational field. The effects of velocity, temperature and concentration fields are studied for different physical parameters such as the magnetic field parameter, thermal radiation parameter, Schmidt number, thermal Grashof number, mass Grashof number and time. It is observed that the velocity increases with decreasing magnetic field parameter or radiation parameter. But the trend is just reversed with respect to a or t .

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31

ZHENG, HUI, and ZHIPING WEI. "VIBROACOUSTIC ANALYSIS OF STIFFENED PLATES WITH NONUNIFORM BOUNDARY CONDITIONS." International Journal of Applied Mechanics 05, no. 04 (December 2013): 1350046. http://dx.doi.org/10.1142/s1758825113500464.

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This paper deals with vibroacoustic analysis of bidirectional stiffened thin plates with nonuniform discrete elastic edge restraints. The displacement-like governing equation of motion of the stiffened plate is derived by applying energy approach. A series of simple polynomials satisfying the Rayleigh–Ritz convergence criteria as well as the edge boundary conditions are then applied to discretize the governing equation, and the transverse displacements of the plate are solved considering the excitation of an incident acoustic plane wave. The commonly-adopted vibroacoustic indicators of elastic plane surface, i.e., mean square velocity (MSV), radiation efficiency (σ) and sound transmission loss (STL), are calculated for the stiffened plate with uniform and nonuniform discrete boundary conditions (BCs). Numerical studies are performed and results are discussed in detail for the vibroacoustic performance of the plate with different edge elastic restraints.

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32

Qin, Qi, Meiping Sheng, and Zhiwei Guo. "Low-Frequency Vibration and Radiation Performance of a Locally Resonant Plate Attached with Periodic Multiple Resonators." Applied Sciences 10, no. 8 (April 20, 2020): 2843. http://dx.doi.org/10.3390/app10082843.

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The low-frequency vibration and radiation performance of a locally resonant (LR) plate with periodic multiple resonators is studied in this paper, with both infinite and finite structure properties examined. For the finite cases, taking the LR plate attached with two periodic arrays of resonators as an example, the forced vibration response and the radiation efficiency are theoretically derived by adopting a general model with elastic boundary conditions. Through a comparison with the band structures calculated by the plane-wave-expansion method, it shows that the band gaps in the infinite LR plate are in good agreement with the vibration-attenuation bands in the finite LR plate, no matter what boundary conditions are applied to the latter. In contrast to the vibration reduction in the band gaps, the radiation efficiency of the finite LR plate is sharply increased in the band-gap frequency ranges. Furthermore, the acoustic power radiated from the finite LR plate can be seriously affected by its boundary conditions. For the LR plate with greater constraints, the acoustic power is reduced in the band-gap frequency ranges, while that from the one with fully free boundary conditions is increased. When further considering the damping loss factors of the resonators, the attenuation performance can be improved for both the vibration and radiation of the LR plate.

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33

Sivaiah, S., G. Murali, and M. C. K. Reddy. "Finite Element Analysis of Chemical Reaction and Radiation Effects on Isothermal Vertical Oscillating Plate with Variable Mass Diffusion." ISRN Mathematical Physics 2012 (September 16, 2012): 1–14. http://dx.doi.org/10.5402/2012/401515.

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The objective of this paper is to investigate an unsteady flow of a viscous incompressible flow past an infinite isothermal vertical oscillating plate, in the presence of thermal radiation and chemical reaction. The fluid considered here is a gray, absorbing-emitting radiation but a nonscattering medium. The plate temperature is arised to , and the concentration level near the plate is raised linearly with respect to time. An exact solution to the dimensionless governing equations has been obtained by the finite element method, when the plate is oscillating harmonically in its own plane. The effects of velocity, temperature, and concentration are studied for different physical parameters like thermal Grashof number, mass Grashof number, radiation parameter, prandtl number, chemical reaction parameter, Schmidt number, phase angle, and time are studied graphically. The skin-friction coefficient, the Nusselt number, and the Sherwood number at the plate are discussed, and their numerical values for various values of physical parameters are presented through tables.

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34

Ren, Jing, Xueying Li, and Hongde Jiang. "Conjugate Heat Transfer Characteristics in a Highly Thermally Loaded Film Cooling Configuration with TBC in Syngas." Aerospace 6, no. 2 (February 13, 2019): 16. http://dx.doi.org/10.3390/aerospace6020016.

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Future power equipment tends to take hydrogen or middle/low heat-value syngas as fuel for low emission. The heat transfer of a film-cooled turbine blade shall be influenced more by radiation. Its characteristic of conjugate heat transfer is studied experimentally and numerically in the paper by considering radiation heat transfer, multicomposition gas, and thermal barrier coating (TBC). The Weighted Sum of Gray Gases Spectral Model and the Discrete Transfer Model are utilized to solve the radiative heat transfer in the multicomposition field, while validated against the experimental data for the studied cases. It is shown that the plate temperature increases significantly when considering the radiation and the temperature gradient of the film-cooled plate becomes less significant. It is also shown that increasing percentage of steam in gas composition results in increased temperature on the film-cooled plate. The normalized temperature of the film-cooled plate decreases about 0.02, as the total percentage of steam in hot gas increases 7%. As for the TBC effect, it can smooth out the temperature distribution and insulate the heat to a greater extent when the radiative heat transfer becomes significant.

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35

Koch, Robert M. "Acoustic radiation from an infinite submerged, line-driven plate with attached finite plate." Journal of the Acoustical Society of America 137, no. 4 (April 2015): 2323. http://dx.doi.org/10.1121/1.4920482.

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36

Bader, Rolf. "Characterizing Classical Guitars Using Top Plate Radiation Patterns Measured by a Microphone Array." Acta Acustica united with Acustica 97, no. 5 (September 1, 2011): 830–39. http://dx.doi.org/10.3813/aaa.918463.

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Three guitars are measured using a microphone array and reconstructing their radiation patterns. All tones up to the 12th fret of the soundboard are played and analyzed for 20 partials each and back-propagated to obtain the radiation patterns. Four parameters were calculated from these radiation patterns, the radiating area, impedance, pressure reconstruction 1 meter in front of guitar top plate and Interaural Cross Correlation (IACC) as a binaural parameter. The guitars used showed distinct timbre differences, the Wichmann bass-reflex guitar has increased overall loudness with decreased tone variability, the Hanika concert guitar shows a very stable tone throughout playing range, and the low-priced Yamaha flamenco guitar has an rather unstable, semiprofessional tone. The calculated parameters were associated with these guitar characters, explaining the strong radiation and small variation of the bass-reflex guitar by decreased radiation area, associating the more stable sound of the Hanika guitar to a stable IACC behaviour, and the more unstable timbre of the Flamenco guitar to a strong variability over the different parameters used. When correlating the parameters for all guitars it appears that the correlation is independent of the guitar used and so appear to be a constant in guitar acoustics.

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37

Tomašegović, Tamara, Sanja Mahović Poljaček, Maja Strižić Jakovljević, and Raša Urbas. "Effect of the Common Solvents on UV-Modified Photopolymer and EPDM Flexographic Printing Plates and Printed Ink Films." Coatings 10, no. 2 (February 4, 2020): 136. http://dx.doi.org/10.3390/coatings10020136.

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The aim of this research was to analyze the influence of the solvents commonly used in flexography on photopolymer and ethylene propylene diene monomer (EPDM) flexographic printing plates and prints. EPDM plates are recommended when the reproduction process includes a higher amount of the solvents or aggressive solvents. Since additional UV treatment of flexographic printing plates could decrease the interaction between the plate and solvent, photopolymer and EPDM plates were treated with varied UV radiation and exposed to different types of solvents. Effects of the UV treatment and of the solvents on printing plate properties and on prints were analyzed. Results show that EPDM plates are more resistant to solvents in terms of the degree of swelling; however, surface properties of the plates were affected for both plate materials. In addition, the degree of swelling and increased hardness due to UV radiation were crucial for changes of the width of printed lines, and altered surface free energy affected the thickness of deposited ink film for both plate materials. Therefore, depending on the qualitative requirements of specific printed film, the duration of UV treatment can be adjusted for use with specific types of printing plate and solvent.

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38

Pugliesi, R., and E. Lehmann. "Neutron-induced electron radiography using an imaging plate." Applied Radiation and Isotopes 62, no. 3 (March 2005): 457–60. http://dx.doi.org/10.1016/j.apradiso.2004.06.011.

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39

Kirpichnikov, Valery, Lyudmila Drozdova, Alexei Koscheev, and Ernst Myshinsky. "THE STUDY OF ACOUSTIC CHARACTERISTICS OF THE PERFORATED AND HOMOGENOUS PLATES WITH SIMILAR GEOMETRICAL DIMENSIONS." Akustika 32 (March 1, 2019): 79–82. http://dx.doi.org/10.36336/akustika20193279.

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The resonance frequencies of the flexural vibrations, input vibration excitability and acoustic radiation of the homogeneous and perforated plates were investigated. It is established that the average reduction range of the lower resonant frequency of flexural vibrations of the tested plates with the holes virtually coincides with the predictive estimate. The levels of the input vibration excitability of the perforated plate at the lower resonant frequencies exceeded the levels at the corresponding frequencies of the homogeneous plates greater than the calculated value. The levels of resonance acoustic radiation of the perforated plate were significantly less than of the homogeneous one.

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40

Putra, Azma, Nurain Shyafina, Noryani Muhammad, Hairul Bakri, and Noor Fariza Saari. "Development of Hybrid Semi-Analytical and Finite Element Analysis to Calculate Sound Radiation from Vibrating Structure." Advanced Materials Research 845 (December 2013): 71–75. http://dx.doi.org/10.4028/www.scientific.net/amr.845.71.

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Simple analytical model of plate dynamics usually applies for rectangular plate with simply supported edges. Analytical model of sound radiation from rectangular plate is also convenient, but not for other geometries and other boundary conditions. This paper presents a hybrid mathematical model which combines a semi-analytical model with the Finite Element Analysis (FEA) method to determine sound radiation from a vibrating structure. The latter is employed to calculate the vibration velocity of a structure with a rather complex geometry. The results are then used as the input in the semi-analytical model to calculate the radiated sound pressure through the Rayleigh integral. Results from the proposed model are presented here for the radiation efficiency of rectangular plates with different boundary conditions.

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41

Choi, Wonjae, Jim Woodhouse, and Robin S. Langley. "Sound radiation from a vibrating plate with uncertainty." Journal of Sound and Vibration 333, no. 17 (August 2014): 3966–80. http://dx.doi.org/10.1016/j.jsv.2014.03.018.

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42

Eom, H. J., Y. H. Cho, and M. S. Kwon. "Monopole antenna radiation into a parallel-plate waveguide." IEEE Transactions on Antennas and Propagation 48, no. 7 (July 2000): 1142–44. http://dx.doi.org/10.1109/8.876334.

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43

Gentry, C. A., C. Guigou, and C. R. Fuller. "Smart foam for active/passive plate radiation control." Journal of the Acoustical Society of America 101, no. 5 (May 1997): 3108. http://dx.doi.org/10.1121/1.418929.

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44

Chung, B. T. F., and M. M. Kermani. "Radiation View Factors From a Finite Rectangular Plate." Journal of Heat Transfer 111, no. 4 (November 1, 1989): 1115–17. http://dx.doi.org/10.1115/1.3250783.

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45

Laulagnet, B. "Sound radiation by a simply supported unbaffled plate." Journal of the Acoustical Society of America 103, no. 5 (May 1998): 2451–62. http://dx.doi.org/10.1121/1.422765.

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46

Wrona, Stanislaw, Marek Pawelczyk, and Xiaojun Qiu. "Shaping the acoustic radiation of a vibrating plate." Journal of Sound and Vibration 476 (June 2020): 115285. http://dx.doi.org/10.1016/j.jsv.2020.115285.

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47

Marg, Reimar, Alexander Mallwitz, and Arne F. Jacob. "Radiation efficiency of apertures in parallel-plate waveguides." Microwave and Optical Technology Letters 21, no. 3 (May 5, 1999): 159–62. http://dx.doi.org/10.1002/(sici)1098-2760(19990505)21:3<159::aid-mop1>3.0.co;2-p.

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48

Molz, Eric B., and John R. Beamish. "Leaky plate modes: Radiation into a solid medium." Journal of the Acoustical Society of America 99, no. 4 (April 1996): 1894–900. http://dx.doi.org/10.1121/1.415372.

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49

Makarov, S., and S. Kulkarni. "Microwave radiation force on a parallel-plate resonator." Applied Physics Letters 84, no. 9 (March 2004): 1600–1602. http://dx.doi.org/10.1063/1.1650901.

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50

Akay, Adnan, and K. Uno Ingard. "Acoustic radiation from bending waves of a plate." Journal of the Acoustical Society of America 79, S1 (May 1986): S30. http://dx.doi.org/10.1121/1.2023162.

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