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A Parametric Study of Magneto-Optic Imaging Using Finite-Element Analysis Applied to Aircraft Rivet Site Inspection

Z. Zeng, X. Liu, Y. Deng, L. Udpa, L. Xuan, W.C.L. Shih, G.L. Fitzpatrick
2006 IEEE transactions on magnetics  
Magneto-optic/eddy current imaging (MOI) has become increasingly popular for inspecting aging aluminum airframes for cracks and corrosion due to its accuracy, reliability, and ease of use.  ...  A skewness parameter based on the binary images is established to provide a measure of defect size. This parameter will prove useful for automatic detection and classification of defects.  ...  INTRODUCTION M AGNETO-OPTIC/eddy current imaging (MOI) [1] - [5] , developed for aging aircraft inspection, is a relatively new nondestructive evaluation (NDE) technology for detecting surface and subsurface  ... 
doi:10.1109/tmag.2006.880997 fatcat:blswrna2bbfgzdk5bfq34am3uy

Pipeline In-Line Inspection Method, Instrumentation and Data Management

Qiuping Ma, Guiyun Tian, Yanli Zeng, Rui Li, Huadong Song, Zhen Wang, Bin Gao, Kun Zeng
2021 Sensors  
Finally, the challenges, problems, and development trends of pipeline inspection as well as data management are derived and discussed.  ...  Furthermore, data models and management are utilized for defect quantification, classification, failure prediction and maintenance.  ...  Moreover, K-means, as an unsupervised method, has been applied for estimating the size of cracks in aircraft structures through Giant Magneto Resistance (GMR) sensing imaging data [159] .  ... 
doi:10.3390/s21113862 fatcat:fuzettw7ubeg7ecbom7imjuafe

Application of Taguchi Methodology for Optimizing Test Parameters in Magneto-Optic Imaging

Zhiwei Zeng
2003 AIP Conference Proceedings  
The coefficient of skewness of the binary magneto-optic (MO) image can be used for calculating the probability that the image contains a crack.  ...  Subtle images such as for small surface and subsurface defects may be difficult for the inspector to detect.  ...  for NDE as part of the Center for Aviation Systems Reliability program.  ... 
doi:10.1063/1.1570198 fatcat:q6iqz5wa3vahnahxkhwp7cdqyu

Multi-Wave and Hybrid Imaging Techniques: A New Direction for Nondestructive Testing and Structural Health Monitoring

Yuhua Cheng, Yiming Deng, Jing Cao, Xin Xiong, Libing Bai, Zhaojun Li
2013 Sensors  
A new direction for assessment and health monitoring of various structures by capitalizing the advantages of those imaging methods was discussed.  ...  After a brief introduction of nondestructive evaluation (NDE) , structure health monitoring (SHM) and their related challenges, several recent advances that have significantly extended imaging methods  ...  Acknowledgments This work is supported by the National Natural Science Foundation of China (Grant No. 61102141).  ... 
doi:10.3390/s131216146 pmid:24287536 pmcid:PMC3892881 fatcat:wgwahtw4czdaxpjhqzw7acpap4

Electromagnetic Imaging Methods for Nondestructive Evaluation Applications

Yiming Deng, Xin Liu
2011 Sensors  
This review provides a comprehensive summary of research works on electromagnetic imaging methods for NDE applications, followed by the summary and discussions on future directions.  ...  the systems design and made the potential of electromagnetic NDE imaging seemingly unlimited.  ...  The magneto-optic imager (MOI) is widely used in detecting surface and subsurface cracks and corrosion in aircraft skins.  ... 
doi:10.3390/s111211774 pmid:22247693 pmcid:PMC3252010 fatcat:mtjxzhlge5hlpdnkq2zil6bz4q

2021 Index IEEE Transactions on Instrumentation and Measurement Vol. 70

2021 IEEE Transactions on Instrumentation and Measurement  
The primary entry includes the coauthors' names, the title of the paper or other item, and its location, specified by the publication abbreviation, year, and article number.  ...  Departments and other items may also be covered if they have been judged to have archival value. The Author Index contains the primary entry for each item, listed under the first author's name.  ...  ., +, TIM 2021 2516611 Bio-optics A Spectroscopic Diffuse Optical Tomography System for the Continuous 3-D Functional Imaging of Tissue-A Phantom Study.  ... 
doi:10.1109/tim.2022.3156705 fatcat:dmqderzenrcopoyipv3v4vh4ry

Automated Inspection of Aircraft

C. Alberts, C. Carroll, W. Kaufman, C. Perlee, M. Siegel
1998
During a preliminary phase of work under this program, CMU studied the task of aircraft inspection, compiled the functional requirements for an automated system to inspect skin fastener rows, and developed  ...  New NDI sensors, such as the magneto-optic sensor developed by Physical Research, Inc.  ... 
doi:10.21949/1404583 fatcat:rc534objwvhj7ksqapglacvj4a

2019 Index IEEE Transactions on Instrumentation and Measurement Vol. 68

2019 IEEE Transactions on Instrumentation and Measurement  
., +, TIM May 2019 1522-1532 Data communication Design of Multichannel and Multihop Low-Power Wide-Area Network for Aircraft Vibration Monitoring.  ...  ., +, TIM July 2019 2460-2468 A Novel Sensitivity Matrix Construction Method for Ultrasonic Tomography Based on Simulation Studies.  ...  Image scanners Nonlinear Reconstruction of Multilayer Media in Scanning Microwave Microscopy. Wei, Z., +, TIM Jan. 2019 197-205  ... 
doi:10.1109/tim.2019.2956662 fatcat:kotlu7gwcngrdkelerc5va2hqe

Vocal fold vibratory and acoustic features in fatigued Karaoke singers

Gaowu Wang, Andy Lo, Karen Chan, Jiangping Kong, Edwin Yiu
2012 Journal of the Acoustical Society of America  
An all-optical experimental technique allows for both the generation and the detection of the elastic guided waves.  ...  Testing of the detection of non-aircraft anthropogenic sound has been continued with a wide body of data.  ...  This study examined whether 1-hour perceptual training could elicit feature-specific improvement of performance and corresponding cortical plasticity in humans during speech segregation by using magnetoencephalography  ... 
doi:10.1121/1.4708731 fatcat:cu5chvstgjbzhlhdzd63flz7nu

The influence of thresholding passive bubble-acoustic signals on the quantification of physical effects

Richard Manasseh, Yonggang Zhu, Hubert Chanson, Andrew Ooi, Alexander Babanin, Irena Bobevski
2012 Journal of the Acoustical Society of America  
An all-optical experimental technique allows for both the generation and the detection of the elastic guided waves.  ...  Testing of the detection of non-aircraft anthropogenic sound has been continued with a wide body of data.  ...  This study examined whether 1-hour perceptual training could elicit feature-specific improvement of performance and corresponding cortical plasticity in humans during speech segregation by using magnetoencephalography  ... 
doi:10.1121/1.4708757 fatcat:4zx4vkq66rgihgir2kv6pms4ea

Sensors and Technologies in Spain: State-of-the-Art

Gonzalo Pajares
2014 Sensors  
After the call for papers we received over a hundred of manuscripts, 88 of high quality, of which, were finally selected after a peer review process conducted by prestigious scientists with a high level  ...  A broad range of sensor-based technologies, procedures and applications are addressed, as a whole, which represent the state of the art in Spain.  ...  In [24] a perception system based on audio and visual inspection is proposed for a humanoid robotic head.  ... 
doi:10.3390/s140815282 pmid:25195853 pmcid:PMC4179053 fatcat:m3oivwfii5f27fltyxwnh76joi

Motion Systems [chapter]

2009 Principles of Flight Simulation  
The data acquired in flight is then scrutinized and compared with data generated in the simulation studies.  ...  Bearing in mind that data acquired experimentally (e.g. from flight trials) is probably valid at the acquired data points (within the resolution of the sensor measurement) and moreover, that an experimentalist  ...  The cost function takes the following form: where, for each axis J x is the cost function for the x th axis a a is the aircraft acceleration a s is the simulator acceleration v is the velocity of the motion  ... 
doi:10.1002/9780470685662.ch10 fatcat:4w57z4rbojbavjc42xzsj45o4q

Form Follows Function [chapter]

Jim Davies, Jeremy Gibbons, Radu Calinescu, Charles Crichton, Steve Harris, Andrew Tsui
2012 Lecture Notes in Computer Science  
Components simulation results show good agreement with available experimental data.  ...  This project involves simulating a Cyclocopter rotor through the use of Computational Fluid Dynamics, and the design and development of a test rig for experimental testing.  ... 
doi:10.1007/978-3-642-32355-3_2 fatcat:it4gcw7ynbctpklht6cmrobssq

Electrophysiologic assessment of (central) auditory processing disorder in children with non-syndromic cleft lip and/or palate

Xiaoran Ma, Lian Ma, Bradley McPherson
2012 Journal of the Acoustical Society of America  
I will focus on the progress of acoustic wave propagation in multiphase porous mediums, time reversal acoustic imaging for seismic data, and hydrostatic pressured fracture detection in enhanced oil recovery  ...  The validation was performed with computer simulations and 1:10 scale model measurements for the evaluation of the alternatives. 3491  ...  imaging technique is proposed for pipeline inspections.  ... 
doi:10.1121/1.4709280 fatcat:4mh3vlxn7ffl7kdnegaad3f2hq

Calibration and Performance Evaluation of Miniature Ultrasonic Hydrophones Using Time Delay Spectrometry

P.A. Lewin
1981 1981 Ultrasonics Symposium  
The authors recently presented a theory for a new inverse scattering technique for cross-sectional and three-dimensional imaging'.  ...  Finally, we will show experimental results on tissue equivalent phantoms obtained with the data collected in the transmission mode. D. Nahamoo and A. C.  ...  We also studied the amounts of image degradations by experiments using phantoms and computer simulation.  ... 
doi:10.1109/ultsym.1981.197704 fatcat:hqap7ioh55dn5ilt2y4nojqnbi
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