Results 31 to 40 of about 508,050 (346)

Multi-Dimensional Uniform Initialization Gaussian Mixture Model for Spar Crack Quantification under Uncertainty

Sensors, 2021
Guided Wave (GW)-based crack monitoring method as a promising method has been widely studied, as this method is sensitive to small cracks and can cover a wide monitoring range.
Qiuhui Xu, Shenfang Yuan, Tianxiang Huang   +2 more
doaj   +1 more source

Independent Component Analysis for Improved Defect Detection in Guided Wave Monitoring [PDF]

, 2015
Guided wave sensors are widely used in a number of industries and have found particular application in the oil and gas industry for the inspection of pipework.
Cawley, P, Dobson
core   +1 more source

Nanoscale coherent imaging of photonic structures by PSTM [PDF]

, 2000
We present an alternative instrument to map local optical field distributions: a photon scanning tunneling microscope (PSTM). In a PSTM a near-field optical fiber probe is used to frustrate the evanescent field above an integrated optical device.
Balistreri, M.L.M., Flück, E., Hulst, N.F. van, Korterik, J.P., Kuipers, L.   +4 more
core   +2 more sources

The mode transformation of a T(0,1) guided wave in an elbow pipe and its influence on defect location

AIP Advances, 2020
To correct the inaccurate location of elbow pipe defects, our study established an experimental platform for magnetostrictive T(0,1) guided wave detection.
Shengrong Long, Wenwu Deng, Yongyue Huang, Lin Gu, Xuanyu Chen   +4 more
doaj   +1 more source

Mode control of guided wave in magnetic hollow cylinder using electromagnetic acoustic transducer array

Nuclear Engineering and Technology, 2015
The aim of this work is to demonstrate a method for exciting and receiving torsional and longitudinal mode guided waves with an electromagnetic acoustic transducer (EMAT) ring array. First of all, a three-dimensional guided wave simulator is developed in
Akinori Furusawa, Fumio Kojima, Atsushi Morikawa   +2 more
doaj   +1 more source

New type of guided waves in birefringent media [PDF]

, 1993
The existence of waves guided by thin dielectric films deposited over a positive birefringent crystal for waveguide parameters below usual cutoff is discussed.
Mihalache, Dumitru, Pérez Torres, Juan, Torner Sabata, Lluís   +2 more
core   +2 more sources

Frequency-sweep examination for wave mode identification in multimodal ultrasonic guided wave signal [PDF]

, 2014
This article has been made available through the Brunel Open Access Publishing Fund.Ultrasonic guided waves can be used to assess and monitor long elements of a structure from a single position.
Balachandran, W, Boulgouris, NV, Fateri, S, Gan, T-H, Wilkinson, A   +4 more
core   +1 more source

Guided Wave and Damage Detection in Composite Laminates Using Different Fiber Optic Sensors

Sensors, 2009
Guided wave detection using different fiber optic sensors and their applications in damage detection for composite laminates were systematically investigated and compared in this paper.
Fucai Li, Hideaki Murayama, Kazuro Kageyama, Takehiro Shirai   +3 more
doaj   +1 more source

High performance guided-wave asynchronous heralded single photon source [PDF]

, 2005
We report on a guided wave heralded photon source based on the creation of non-degenerate photon pairs by spontaneous parametric down conversion in a Periodically Poled Lithium Niobate waveguide.
Bennett, Beveratos, Brown, D. B. Ostrowsky, Fasel, Grangier, Hong, Lutkenhaus, O. Alibart, P. Baldi, Pelton, Rarity, Ribordy, S. Tanzilli, Tanzilli, Treussart   +15 more
core   +4 more sources

Propagation Characteristics and Defect Sensitivity Analysis of Guided Wave From Single Excitation Source in Elbows

IEEE Access, 2019
Ultrasonic guided wave has received significant attention in the field of nondestructive testing because of their advantages in detecting the entire wall thickness.
Yu Wang, Xueyi Li
doaj   +1 more source