Results 41 to 50 of about 8,384 (261)

Pipeline External Defect Detection Based on Magnetically Focused Eddy Current Testing System

Applied Sciences
Eddy current internal inspection technology has been extensively studied and applied in industrial environments such as oil and gas pipelines. Typically, the penetration depth of eddy current testing in ferromagnetic pipes is reduced compared to non ...
Zihao Gao, Huaguang Zhang
doaj   +1 more source

Austenitic Biomaterial Cracks Evaluation by Advanced Nondestructive Techniques

Advances in Electrical and Electronic Engineering, 2017
The article deals with Non-Destructive Evaluation (NDE) of austenitic stainless steels. Eddy current, ultrasonic testing and non-contact magnetic field mapping methods are used for this purpose.
Milan Smetana, Vladimir Chudacik, Radoslav Konar, Milos Mician   +3 more
doaj   +1 more source

Value of MRI Outcomes for Preventive and Early‐Stage Trials in Spinocerebellar Ataxias 1 and 3

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To examine the value of MRI outcomes as endpoints for preventive and early‐stage trials of two polyglutamine spinocerebellar ataxias (SCAs). Methods A cohort of 100 participants (23 SCA1, 63 SCA3, median Scale for the Assessment and Rating of Ataxia (SARA) score = 5, 42% preataxic, and 14 gene‐negative controls) was scanned at 3T up ...
Thiago J. R. Rezende, Emilien Petit, Young Woo Park, Sophie Tezenas du Montcel, James M. Joers, Jonathan M. DuBois, H. Moore Arnold, Michal Povazan, Ipek Özdemir, Guita Banan, Romain Valabregue, Philipp Ehses, Jennifer Faber, Chiadi U. Onyike, Peter B. Barker, Jeremy D. Schmahmann, Eva‐Maria Ratai, Sub H. Subramony, Thomas H. Mareci, Khalaf O. Bushara, Henry Paulson, Thomas Klockgether, Alexandra Durr, Tetsuo Ashizawa, Christophe Lenglet, Gülin Öz, READISCA Investigators   +26 more
wiley   +1 more source

Free-induction-decay magnetometer for pulsed eddy current testing

Physical Review Research
Pulsed-eddy-current testing (PECT) is a highly efficient active detection technique used in nondestructive testing of conductive structures, transient electromagnetic exploration for mineral resources, and the detection of unexploded ordnance.
Zixuan Xiao, Kaiwen Yi, Zejia Lin, Xiang Peng   +3 more
doaj   +1 more source

Orthogonal differential eddy current testing for internal detection of oil and gas pipeline based on incremental permeability extraction

You-qi chuyun
Objective Serving as the primary mode of transporting oil and natural gas, pipelines are prone to corrosion, cracks, and other defects under intricate operational conditions.
Yanshuang GONG, Xiaokang WAN, Hongjun WANG, Jiaxing XIN, Guangming CHEN, Jinzhong CHEN, Bingfeng YU, Yilai MA   +7 more
doaj   +1 more source

Hybrid GMR/IR probe to reduce the effects of lift-off

Measurement + Control, 2019
Eddy current testing technique is being utilized in engineering, such as in nuclear steam pipe, aircraft and gas/oil pipeline, due to its sensitivity to small cracks and subsurface defects, immediate results, environmental friendliness, and use in ...
Moneer A Faraj, Fahmi Samsuri, Ahmed N AbdAlla, Damhuji Rifai, Kharudin Ali, Y Al-Douri   +5 more
doaj   +1 more source

The semi-analytic solution to the magnetic field of frequency-band-selecting eddy current testing for local corrosion flaw in large diameter pipeline

Science Progress, 2023
Local corrosion flaws (LCFs) widely exist in large diameter pipelines (LDPs) (e.g. steam, oil/gas pipeline) due to flow-accelerated corrosion, environmental corrosion, and material aging.
Kuan Fu, Pengchao Chen, Yating Yu, Rui Li, Yiming Fan, Cheng Sun, Bowen Liu   +6 more
doaj   +1 more source

Normal‐Appearing White Matter Injury Mediates Chronic Deep Venous Hypoxia and Disease Progression in Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore how cerebral hypoxia and Normal‐Appearing White Matter (NAWM) integrity affect MS lesion burden and clinical course. Methods Seventy‐nine MS patients, including 13 clinically isolated syndrome (CIS) patients and 66 relapsing–remitting multiple sclerosis (RRMS) patients, and 44 healthy controls (HCs) were recruited from ...
Xinli Wang, Huiying Wang, Zhizheng Zhuo, Ai Guo, Ke Lv, Decai Tian, Chao Chai, Yunyun Duan, Shuang Xia   +8 more
wiley   +1 more source

Feasibility of an Eddy Current Flaw Test that Detects Disturbed Magnetic Flux.

Journal of the Magnetics Society of Japan, 1995
A method of eddy current flaw test that detects disturbed magnetic flux was proposed, to improve the crack direction dependency of the detectability of bobbin-coil-type probes. These are conventionally used for eddy-current nondestructive examination of steam generator tubes in pressurized- water-type nuclear plants.
Ebine, N., Ara, K., Nakajima, N., Takeuchi, S., Hara, K.   +4 more
openaire   +1 more source

Neurochemical Endpoints to Inform Early‐Stage Trials of Spinocerebellar Ataxia 2 and 3 in a Multisite Setting

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neurochemical levels measured by brain MR spectroscopy (MRS) have been proposed as endpoints for clinical trials in early‐stage spinocerebellar ataxia (SCA) trials. We tested their trial‐readiness by quantifying neurochemicals in three affected brain regions in early‐stage cohorts of SCA2 and SCA3, examining their reproducibility in ...
James M. Joers, Yaqiao Wei, Dinesh K. Deelchand, Adam Berrington, Young Woo Park, Guita Banan, Michal Povazan, Jens T. Rosenberg, André J. W. van der Kouwe, Tetsuo Ashizawa, Khalaf O. Bushara, Chiadi U. Onyike, Sub H. Subramony, Jeremy D. Schmahmann, Brian J. Soher, Peter B. Barker, Thomas H. Mareci, Eva‐Maria Ratai, Lynn E. Eberly, Gülin Öz   +19 more
wiley   +1 more source