Results 21 to 30 of about 837,361 (340)

Sonographic features of agenesis of dorsal pancreas

Indian Journal of Radiology and Imaging, 2013
Agenesis of dorsal pancreas is an extremely rare congenital anomaly that occurs due to failure of the dorsal pancreatic bud to form the body and tail of the pancreas. We report the sonographic appearance of this condition in six cases.
Boopathy Vijayaraghavan S, Swapna Gouru, Sathiya Senthil   +2 more
doaj   +1 more source

Increasing the speed of automated ultrasonic inspection of as-built additive manufacturing components by the adoption of virtual source aperture

Materials & Design, 2022
Wire + Arc Additive Manufacture (WAAM) is an economical manufacturing technique to build components. To maintain the commercial and technical benefits, inspection is desired at each layer of the build. New conformable phased array roller-probes offer the
Rastislav Zimermann, Ehsan Mohseni, Randika K.W. Vithanage, David Lines, Euan Foster, Charles N. Macleod, Stephen Gareth Pierce, Gianrocco Marinelli, Stewart Williams, Jialuo Ding   +9 more
doaj   +1 more source

Comparison between two ultrasonic methods in their ability to monitor the setting process of cement pastes [PDF]

, 2009
This paper presents the comparison between ultrasonic wave transmission (USWT) method and ultrasonic wave reflection (USWR) method in their ability to monitor the setting process of cement pastes.
Akkaya, Franci Kavčič, Goran Turk, Gregor Trtnik, Grosse, Hewlett, Kamada, Keating, Korhonen, Krauss, Marko Ivan Valič, Rapoport, Reinhardt, Robeyst, Sayers, Schindler, Stepišnik, Sun, Sun, Trtnik, Valič, Voigt, Voigt, Voigt   +23 more
core   +2 more sources

The high frequency flexural ultrasonic transducer for transmitting and receiving ultrasound in air [PDF]

, 2020
Flexural ultrasonic transducers are robust and low cost sensors that are typically used in industry for distance ranging, proximity sensing and flow measurement.
Dixon, Steve M., Feeney, Andrew, Kang, Lei   +2 more
core   +3 more sources

Ultra-broad low-frequency forbidden bands in 1D solid–fluid acoustic superlattices with multiple solid constituents

AIP Advances, 2023
In this paper, a theoretical model of underwater acoustic wave propagation, based on the transfer matrix method, is employed to calculate acoustic wave transmission through a 1D solid–fluid superlattice (SFSL) with multiple solid constituents.
Sai Zhang, Huizi He, Baiqiang Xu, Wei Lu
doaj   +1 more source

Design and Test of Peanut Root-Disk Full-Feeding Longitudinal Axial Flow Pod-Picking Device

Agronomy, 2023
To improve the pod-picking efficiency of the combine harvester for both peanut seedlings and peanuts, a longitudinal axial flow pod-picking device is designed in this study. The fixation and adjustment modes of the pod-picking rod were determined.
Xiaodong Liu, Qingqing Lü, Liquan Yang, Guangxi Li   +3 more
doaj   +1 more source

Sound touch elastography of Achilles tendons in patients with type 2 diabetes mellitus versus healthy adults

Diabetology & Metabolic Syndrome, 2023
Background The studies of the effect of diabetes on the stiffness of Achilles tendon (AT) tissue remain inconclusive, we believe it is necessary to find a reliable method which can be used to detect the stiffness changes of the AT in the diabetic state ...
Xinxin Huang, Xingyu Chen, Xiu Chen, Ping Chi, Pengfei Wang, Xiaomei Zhan, Chunpeng Zou, Liang Wang, Yanyan Dong   +8 more
doaj   +1 more source

Prediction of concrete strength using ultrasonic pulse velocity and artificial neural networks [PDF]

, 2009
Ultrasonic pulse velocity technique is one of the most popular non-destructive techniques used in the assessment of concrete properties. However, it is very difficult to accurately evaluate the concrete compressive strength with this method since the ...
Ali, Berriman, del Rio, Franci Kavčič, Goran Turk, Gregor Trtnik, Hola, Hola, Hong-Guang, Kewalramani, Kheder, Lee, Mehta, Ohdaira, Popovics   +14 more
core   +1 more source

Non-Contact Laser Ultrasound Detection of Internal Gas Defects in Lithium-Ion Batteries

Sensors
Non-contact laser ultrasonic detection technology provides an innovative solution for evaluating the internal conditions of lithium-ion batteries (LIBs), offering significant advantages in gas defect assessment and structural defect identification.
Dongxia Tang, Chenguang Xu, Guidong Xu, Sen Cui, Sai Zhang   +4 more
doaj   +1 more source

Sensor-Enabled Multi-Robot System for Automated Welding and In-Process Ultrasonic NDE

Sensors, 2021
The growth of the automated welding sector and emerging technological requirements of Industry 4.0 have driven demand and research into intelligent sensor-enabled robotic systems.
Momchil Vasilev, Charles N. MacLeod, Charalampos Loukas, Yashar Javadi, Randika K. W. Vithanage, David Lines, Ehsan Mohseni, Stephen Gareth Pierce, Anthony Gachagan   +8 more
doaj   +1 more source