Zobrazeno 1 - 10
of 19
pro vyhledávání: '"L. C. Lynnworth"'
Autor:
L. C. Lynnworth
Publikováno v:
Measurement + Control, Vol 2 (1969)
Science, technology, and industry are demanding temperature measurements that are faster, wider ranging, more accurate, more rugged, and cheaper than conventional capabilities. Acoustical instrumentation has a good chance of meeting these requirement
Externí odkaz:
https://doaj.org/article/4446c8bea8ae4d0dae25f027ef96c170
Autor:
B. J. Dean, L. C. Lynnworth
Publikováno v:
1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027).
The hockey stick (OKS) buffer waveguide for high-temperature clamp-on flow velocity measurements of hot water, 260°C, first reported in these Proceedings in 1996 and 1997, has evolved in response to the demands of new applications. Accuracy in some
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64b910c5b692450b8b41ec98ffb3c4dd
https://doi.org/10.1109/ultsym.1999.849511
https://doi.org/10.1109/ultsym.1999.849511
Publikováno v:
Journal of Applied Physics. 45:2409-2420
Ultrasonic velocity and attenuation measurements have been made by traveling‐wave methods on several refractory metals and their alloys. Broad‐band pulses centered around 120 kHz were used for extensional waves (and some torsional waves) in wire
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c070b3c740f6ad0ac15081c168eb2fc6
https://doi.org/10.1063/1.1663607
https://doi.org/10.1063/1.1663607
Autor:
L. C. Lynnworth
Publikováno v:
Journal of Vibration and Acoustics. 108:69-81
The interaction of ultrasonic waves with solid, liquid, gaseous, or multiphase media offers many opportunities for accurate process control, but users risk disappointment because of the influence of “unwanted” variables. The present paper illustr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a527ce96388c1c990c21115b224e54b5
https://doi.org/10.1115/1.3269306
https://doi.org/10.1115/1.3269306
Publikováno v:
Journal of Heat Transfer. 101:622-627
A new ultrasonic instrumentation system was developed and applied to the problem of detecting critical heat flux (CHF) in experiments that simulate a nuclear reactor fuel assembly. This instrumentation system used the principles of ultrasonic thermom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95cee8d4b197fcee2b6add922478a626
https://doi.org/10.1115/1.3451047
https://doi.org/10.1115/1.3451047
Autor:
L. C. Lynnworth, T. H. Nguyen
Publikováno v:
Nondestructive Testing Communications. 1:165-174
Fine-pitch threads are used to pressure-couple extensional mode ultrasonic pulses at frequencies on the order of 50 to 100 kHz between four stainless steel lead wires of 1.6 mm diameter and a densi...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54682c701b23d7f77228c9790f0b286c
https://doi.org/10.1080/10589758408952903
https://doi.org/10.1080/10589758408952903
Autor:
L. C. Lynnworth, A. M. Lynnworth
Publikováno v:
Journal of Fluids Engineering. 107:44-48
In applying the ultrasonic contrapropagation method to the measurement of flow in highly attenuating fluids, or to fluids in conduits having only limited access, it is sometimes necessary to interrogate along a path other than the conventional tilted
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::952a8b245d9fcada435c342765ea2291
https://doi.org/10.1115/1.3242438
https://doi.org/10.1115/1.3242438
Publikováno v:
IEEE Transactions on Nuclear Science. 16:184-187
Ultrasonic thermometry, based on the temperature dependence of sound velocity in solids, has been demonstrated under ideal laboratory conditions beyond 6000R. Integrated fluxes (nvt) of 2.6 × 1019 fast and 8.7 × 1019 thermal do not perturb the velo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::342e48288e0f10af8f3e1a5a3db5c069
https://doi.org/10.1109/tns.1969.4325104
https://doi.org/10.1109/tns.1969.4325104
Publikováno v:
The Journal of the Acoustical Society of America. 36:1678-1684
The elastic moduli of several materials have been determined by momentarily coupling 1‐mc/sec longitudinal‐ and shear‐wave pulses through a sample, and measuring the transit time. The temperature range has been from room temperature to beyond 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8edeb1175440a162a3c5889a80309b50
https://doi.org/10.1121/1.1919264
https://doi.org/10.1121/1.1919264
Autor:
L. C. Lynnworth
Publikováno v:
IEEE Transactions on Sonics and Ultrasonics. 12:37-48
Using impedance matching, one may increase the transmission of ultrasound across solid‐gas interfaces, and thus increase the transmission range of ultrasound in gases. This is illustrated by theoretical predictions, and experimental results in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3b7c2219ff5b0e9f3e1866a3147e0ab
https://doi.org/10.1109/t-su.1965.29359
https://doi.org/10.1109/t-su.1965.29359