Results 231 to 240 of about 18,925 (253)
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Examination of objects made of wood using air-coupled ultrasound
IEEE Symposium on Ultrasonics, 2002The authors describe an experimental air-coupled, ultrasonic measurement system that can be used to study the propagation of megahertz signals in wooden plates ranging in thickness from 3 to 25 mm. They also report experimental measurements of the amplitude of transmitted, narrowband, 0.5-MHz signals as a function of the angle of incidence for ...
C.M. Fortunko, M.C. Renken, A. Murray
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Air-coupled Ultrasound for Monitoring the Production of PUR Sandwich Structures
International Polymer Processing, 2010Abstract Polyurethane sandwich structures are very useful in construction because of their excellent thermal insulating properties. Even though the chemicophysical processes occurring inside the production line crucially affect the quality of the final product, up to now, they are not monitored at all.
F. Siegmund +4 more
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Determination of surface density of nonporous membranes with air-coupled ultrasound
AIP Conference Proceedings, 2015The surface density or mass per unit area of a membrane is an important material property often used in acoustics and ultrasonics. In this paper, a new measurement and analysis technique for estimating the surface density as a function of frequency for a nonporous membrane or foil is introduced.
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Non-invasive monitoring of potato drying by means of air-coupled ultrasound
Food Control, 2023Virginia Sánchez-Jiménez +2 more
exaly
Assessment of avocado textural changes during ripening by using contactless air-coupled ultrasound
Journal of Food Engineering, 2021Maria Dolores Fariñas +2 more
exaly
Fundamental study of air-coupled ultrasound locationing
The Proceedings of Mechanical Engineering Congress, Japan, 2018Atsushi ITO +2 more
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High-resolution air-coupled laser ultrasound imaging of microstructure and defects in braided CFRP
Composites Communications, 2021Lvming Zeng, Maodan Yuan, Xuanrong Ji
exaly
Frequency modulated, air-coupled ultrasound generated by fluidic oscillators
2022 IEEE International Ultrasonics Symposium (IUS), 2022Christoph Strangfeld +4 more
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Air-Coupled Ultrasound Time Reversal (ACU-TR) For Subwavelength Nondestructive Imaging
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2020Torben Marhenke +2 more
exaly