Zobrazeno 1 - 10
of 30
pro vyhledávání: '"W. Molkenstruck"'
Autor:
Volker Wilkens, W. Molkenstruck
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 54:1784-1791
A PVDF membrane hydrophone has been constructed in particular for comparisons of broadband ultrasound hydrophone calibration methods and of the results obtained by different laboratories. Intercomparisons have to accompany the efforts currently under
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dba172336347eec841d5910c26ab9c96
https://doi.org/10.1109/tuffc.2007.462
https://doi.org/10.1109/tuffc.2007.462
Publikováno v:
Ultrasonics. 36:775-781
Weak acousto-optical interaction and normal light incidence provided, light diffraction tomography has proved to be a useful tool for mapping ultrasonic fields. Beyond this range, for normal incidence, data acquisition and evaluation has turned out t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31e2dc2f80fd674eca5f17a64d56d92d
https://doi.org/10.1016/s0041-624x(97)00166-2
https://doi.org/10.1016/s0041-624x(97)00166-2
Publikováno v:
Ultrasonics. 36:721-725
An optical calibration technique is described, which allows the investigation of the frequency response of ultrasonic detectors up to a frequency of 50 MHz. This technique is applied to determine the transfer function of a metal-coated ultrasonic fib
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fadd342d0ca7bd7e0878a6d1aab8cd83
https://doi.org/10.1016/s0041-624x(97)00121-2
https://doi.org/10.1016/s0041-624x(97)00121-2
Publikováno v:
Ultrasonics. 35:499-507
Weak acousto-optical interaction provided, light diffraction tomography has proved to be a useful tool for mapping ultrasonic fields. Beyond this range, data acquisition and evaluation is far more difficult, which is mainly due to the fact that, in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91246ff61aed52c0366365cdedb98cd2
https://doi.org/10.1016/s0041-624x(97)00035-8
https://doi.org/10.1016/s0041-624x(97)00035-8
Publikováno v:
Ultrasonics. 35:297-303
The experimental determination of the transfer function of a metal-coated ultrasonic fiber tip sensor for frequencies up to 40 MHz is presented. The transfer function is defined as transmission factor of acoustical displacement. The fiber-optic measu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09165ee71bda80fe703ae08b4f3767c6
https://doi.org/10.1016/s0041-624x(97)00003-6
https://doi.org/10.1016/s0041-624x(97)00003-6
Publikováno v:
Ultrasonics. 34:801-805
For weak and strong acousto-optic interaction analytical solutions are available which describe the diffraction problem. In the intermediate range between these limiting cases, however, the light-sound interaction is far more difficult to analyze for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc76ea990b376d9e717e3f33039f54f3
https://doi.org/10.1016/s0041-624x(96)00081-9
https://doi.org/10.1016/s0041-624x(96)00081-9
Publikováno v:
Ultrasonics. 29:76-80
Composite piezoelectric materials are of increasing importance in transducer technology. Recent research work is focused on ceramic-polymer composites for medical and material diagnosis. The present paper deals with the dynamic behaviour of broadband
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0125db0697b4fba6a323ad3082ee0c3d
https://doi.org/10.1016/0041-624x(91)90177-a
https://doi.org/10.1016/0041-624x(91)90177-a
Autor:
C. Koch, W. Molkenstruck
Publikováno v:
IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 46(5)
A technique for the primary calibration of hydrophones based on an optical principle is presented. An interferometer determines the displacement of a pellicle mounted on the surface of the tank fluid perpendicular to the sound propagation axis; the k
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26b926e338f24e9ea7aeaae50967ecf6
https://pubmed.ncbi.nlm.nih.gov/18244323
https://pubmed.ncbi.nlm.nih.gov/18244323
Autor:
W. Molkenstruck, V. Wilken
Publikováno v:
2006 IEEE Ultrasonics Symposium.
A PVDF membrane hydrophone has been constructed in particular for comparisons of broadband ultrasound hydrophone calibration methods and for intercomparisons of different calibration laboratories. The hydrophone design chosen has a foil thickness of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aeb58e86055d7a6cc0f70e41b6f38b95
https://doi.org/10.1109/ultsym.2006.147
https://doi.org/10.1109/ultsym.2006.147
Publikováno v:
2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121).
The frequency response of a fiber-optic dielectric multilayer hydrophone is experimentally determined. The transfer function obtained can be applied to the deconvolution of measured time waveforms of broadband ultrasonic pulses. To improve the perfor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01fe80365564c38567cd8474bcb02fbe
https://doi.org/10.1109/ultsym.2000.921520
https://doi.org/10.1109/ultsym.2000.921520