Zobrazeno 1 - 10
of 48
pro vyhledávání: '"J.F.W. Bell"'
Publikováno v:
NDT International. 13:301-304
A knowledge of the elastic constants of refractory materials is necessary for carrying out stress analysis of high temperature structural design. Together with internal friction such measurements can give useful NDT information. In developing new mat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e1eb59dd16962dfe2cd57d89814c8cf
https://doi.org/10.1016/0308-9126(80)90022-x
https://doi.org/10.1016/0308-9126(80)90022-x
Publikováno v:
Journal of Sound and Vibration. 47:415-432
The in-plane vibrations of thin disks and narrow thin rings which already have been completely analysed are the two extremes of the annulus configuration. The general case of the annulus has now been analysed and the results confirmed by experiment.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53ca010fb68a06fdb30e5086ceeb9d8b
https://doi.org/10.1016/0022-460x(76)90951-2
https://doi.org/10.1016/0022-460x(76)90951-2
Publikováno v:
Journal of Sound and Vibration. 68:45-58
In many distributed resonators the low order mode frequencies are sufficiently separated to permit satisfactory modelling in terms of only the single mode being used. It can be represented mechanically by mass, stiffness and energy loss by dissipatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40dfbffbcd2ea18dbd76ffd5c85e241e
https://doi.org/10.1016/0022-460x(80)90451-4
https://doi.org/10.1016/0022-460x(80)90451-4
Publikováno v:
Transactions of the IMF. 62:134-138
SummaryThe paper describes an electronic instrument to evaluate the integrity of solids and to test adhesive bonds of specimens vibrating flexurally within the audible frequency range. The principle is to excite vibrations in a sample, interrupt the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cb72fd1df215a907a0851b7be930d70
https://doi.org/10.1080/00202967.1984.11870688
https://doi.org/10.1080/00202967.1984.11870688
Autor:
B.P. Doyle, J.F.W. Bell
Publikováno v:
Ultrasonics. 2:39-42
Experiments have been carried out on the propagation of longitudinal and torsional pulses in smooth and corrugated rods. The pulses used were long compared to the diameter of the rods and the corrugations were small enough to make the resonant freque
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85ecae0dd90df2f8e5c0234596023556
https://doi.org/10.1016/0041-624x(64)90336-1
https://doi.org/10.1016/0041-624x(64)90336-1
Autor:
J.F.W. Bell
Publikováno v:
Ultrasonics. 6:11-14
The solid acoustic thermometer is basically a remote acoustic resonator for temperature sensing. It can employ any of a large number of materials, giving a freedom of choice not possessed by other methods of temperature measurement. The instrument is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34f5bf31c4d4a0d9259763aabf34ef8a
https://doi.org/10.1016/0041-624x(68)90009-7
https://doi.org/10.1016/0041-624x(68)90009-7
Publikováno v:
Ultrasonics. 11:178-181
The presentation of acoustic laws in diagrammatic form has found use in several ways, R12 particularly in determining acoustic quantities from elastic quantities, in choosing materials for line-line matching, and in tracing variations of properties w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1691c167eb688036d1f5d061d77ccd6
https://doi.org/10.1016/0041-624x(73)90203-5
https://doi.org/10.1016/0041-624x(73)90203-5
Autor:
J.F.W. Bell, J.Y.F. Chen
Publikováno v:
NDT International. 14:325-327
A sonar type pulse-echo system was used to excite in-plane vibration of rectangular and square plates. By examining the end resonance and plate wave mode on rectangular strip, the elastic constants could be calculated precisely. The authors studied t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef3ab91d23097af6ac34258238af269d
https://doi.org/10.1016/0308-9126(81)90111-5
https://doi.org/10.1016/0308-9126(81)90111-5
Autor:
P.J. Kalmarczie, J.F.W. Bell
Publikováno v:
Physics Letters A. 61:91-93
An experimental and theoretical study of end resonances in strips and plates has revealed that, over a wide frequency range, only one resonance exists. The frequency increases by 20% over the range of Poisson's ratio 0.37 (brass) to 0.10 (pyrolytic g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42a9142ff514348c726bd2e8dccf7b95
https://doi.org/10.1016/0375-9601(77)90846-5
https://doi.org/10.1016/0375-9601(77)90846-5
Autor:
J.F.W. Bell
Publikováno v:
Journal of Sound and Vibration. 53:605
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9be6c5187eb8d56860a3da9f0961440
https://doi.org/10.1016/0022-460x(77)90532-6
https://doi.org/10.1016/0022-460x(77)90532-6