Results 31 to 40 of about 3,001,234 (205)

Development and evaluation of a new regional coupled atmosphere–ocean model in the North Sea and Baltic Sea [PDF]

Tellus: Series A, Dynamic Meteorology and Oceanography, 2015
A new regional coupled model system for the North Sea and the Baltic Sea is developed, which is composed of the regional setup of ocean model NEMO, the Rossby Centre regional climate model RCA4, the sea ice model LIM3 and the river routing model CaMa ...
Shiyu Wang, Christian Dieterich, Ralf Döscher, Anders Höglund, Robinson Hordoir, H. E. Markus Meier, Patrick Samuelsson, Semjon Schimanke   +7 more
doaj   +1 more source

Simulation of ultrasonic lamb wave generation, propagation and detection for an air coupled robotic scanner

, 2011
A computer simulator, to facilitate the design and assessment of a reconfigurable, air-coupled ultrasonic scanner is described and evaluated. The specific scanning system comprises a team of remote sensing agents, in the form of miniature robotic ...
Keith Worden, Walter Galbraith, Burnham, Kenneth, Hayward, Gordon, S. Gareth Pierce, Gordon Hayward, Worden, Keith, Galbraith, Walter, Spencer, Andrew, Dobie, Gordon, Pierce, S. Gareth, Gordon Dobie, Andrew Spencer, Kenneth Burnham   +13 more
core   +1 more source

A noncontact ultrasonic platform for structural inspection

, 2011
Miniature robotic vehicles are receiving increasing attention for use in nondestructive testing (NDE) due to their attractiveness in terms of cost, safety, and their accessibility to areas where manual inspection is not practical. Conventional ultrasonic
Summan, Rahul, Dobie, Gordon, Pierce, S. Gareth, Hayward, Gordon, G. Hayward, G. Dobie, W. Galbraith, R. Summan, S. G. Pierce, Galbraith, Walter   +9 more
core   +1 more source

A steel plate defect detection method based on oblique incidence of air-coupled ultrasonic waves

管道保护
To address severe energy attenuation and challenges in detecting metal specimens caused by low air density and high viscosity in ultrasonic testing of steel pipelines, a steel plate defect detection method based on oblique incidence of air-coupled ...
Feiyun LIU, Guoqing WANG, Lijian YANG, Hao GENG, Rongxue LI   +4 more
doaj   +1 more source

Air-Coupled Ultrasonic Inspection of Foods: A Review

IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control
[EN] In the context of the ongoing digital revolution, the food industry grapples with significant challenges concerning quality control, safety, production efficiency, and economic viability. Tackling these challenges requires analyzing a large volume of samples-preferably the whole production-to extract the maximum amount of information, facilitating
Anabella Giacomozzi, Jose Benedito, Tomás E. Gómez Álvarez-Arenas, Jose V. García-Perez   +3 more
openaire   +3 more sources

Development of Fuel Debris Inspection Methods using Air-Coupled Ultrasound

E3S Web of Conferences, 2018
Japan has decided to start fuel debris removal on 2021. Therefore, before starting retrieval of the fuel debris, investigation of location, shape, and also properties of fuel debris have to be performed.
Hamdani Ari, Kikura Hiroshige, Kimura Shun, Tsukada Keisuke, Sasa Daisuku, Oomori Shuichi   +5 more
doaj   +1 more source

Mass Transfer Study on Drying of Curdlan by Hot Air Coupled with Ultrasound and Infrared Irradiation and Quality Analysis

Shipin gongye ke-ji
Objective: Hot air coupled with ultrasound and infrared irradiation were used for the drying of curdlan. The drying mechanism and quality change of curdlan were explored under the multi-physical fields, so as to developing the green drying technology of ...
Hongqian WANG, Qinyu DAI, Rui ZHU, Chong ZHANG, Yongbin HAN, Dandan LI, Yang TAO   +6 more
doaj   +1 more source

Numerical Study on Coupled Operation of Stratified Air Distribution System and Natural Ventilation under Multi-Variable Factors in Large Space Buildings

Energies, 2021
Stratified air distribution systems are commonly used in large space buildings. The research on the airflow organization of stratified air conditioners is deficient in terms of the analysis of multivariable factors.
Ziwen Dong, Liting Zhang, Yongwen Yang, Qifen Li, Hao Huang   +4 more
doaj   +1 more source

Accelerated Air-coupled Ultrasound Imaging of Wood Using Compressed Sensing

BioResources, 2015
Air-coupled ultrasound has shown excellent sensitivity and specificity for the nondestructive imaging of wood-based material. However, it is time-consuming, due to the high scanning density limited by the Nyquist law.
Yiming Fang, Zhixiong Lu, Lujun Lin, Hailin Feng, Junjie Chang   +4 more
doaj   +1 more source

High-frequency air-coupled transducers [PDF]

The Journal of the Acoustical Society of America, 1990
High-frequency air-coupled ultrasonic transducers are used in industrial applications for detecting or ranging with high resolution. The improvement of the coupling between PZT and air is of importance for the transducer performance. Unfortunately, it is difficult to find a material with proper acoustical impedance and small attenuation at high ...
Xiaoqi Bao, Vasundara V. Varadan, Vijay K. Varadan   +2 more
openaire   +1 more source