Results 41 to 50 of about 54,858 (331)

Rapidly Evolving Circularly Polarized Emission during the 1994 Outburst of GRO J1665-40 [PDF]

, 2002
We report the detection of circular polarization during the 1994 outburst of the Galactic microquasar GRO J1655-40. The circular polarization is clearly detected at 1.4 and 2.4GHz, but not at 4.8 and 8.4GHz, where its magnitude never exceeds 5 mJy.
Bower, Brunthaler, Cheng, Conway, D. C. Hannikainen, Fender, Fender, Frater, Hannikainen, Harmon, Hjellming, Hjellming, Homan, Homan, J.-P. Macquart, K. Wu, Kaiser, Komesaroff, Legg, Macquart, Macquart, Macquart, Marscher, Melrose, Orosz, Pacholczyk, R. J. Sault, Rayner, Roberts, Ruszkowski, Sault, Shahbaz, Soria, Stevens, Tingay, Wardle, Wu   +36 more
core   +2 more sources

Enhancing Wire-Rope Damage Signals Based on a Radial Magnetic Concentrator Bridge Circuit

Sensors, 2022
Hall-effect sensors are used for the non-destructive testing of wire ropes owing to their low power consumption and high operation frequency. The high-speed operation of wire ropes causes vibration inclination at different frequencies, which makes it ...
Jie Tian, Wei Wang, Hongyao Wang, Qiang Bai, Zeyang Zhou, Pengbo Li   +5 more
doaj   +1 more source

Extraction of Flux Leakage and Eddy Current Signals Induced by Submillimeter Backside Slits on Carbon Steel Plate Using a Low-Field AMR Differential Magnetic Probe

IEEE Access, 2021
Magnetic Flux Leakage (MFL) and Eddy Current Testing (ECT) are commonly employed as the non-destructive evaluation (NDE) techniques used to detect defects within the steel.
Mohd Aufa Hadi Putera Zaini, Mohd Mawardi Saari, Nurul A'In Nadzri, Zulkifly Aziz, Nur Huda Ramlan, Keiji Tsukada   +5 more
doaj   +1 more source

Quality Assurance Testing for Screening Defective Aluminum Die-cast Rotors of Squirrel Cage Induction Machines [PDF]

, 2018
The recent trend in squirrel cage induction motor manufacturing is to replace fabricated copper rotors with aluminum die-cast rotors to reduce manufacturing cost to stay competitive in the global market. Porosity in aluminum die-cast squirrel cage rotors
Gyftakis, Konstantinos N., Jeong, Myung, Lee, Sang Bin, Park, Yonghyun, Yun, Jangho   +4 more
core   +1 more source

Magnetic Flux Leakage Method: Large-Scale Approximation

, 2015
We consider the application of the magnetic flux leakage (MFL) method to the detection of defects in ferromagnetic (steel) tubulars. The problem setup corresponds to the cases where the distance from the casing and the point where the magnetic field is ...
Bacciarelli, Mark, Elkington, Peter, Goldobin, Denis S., Ivantsov, Andrey O., Levesley, Jeremy, Pimenova, Anastasiya V.   +5 more
core   +1 more source

Axial magnetic field sensing for pulsed magnetic flux leakage hairline crack detection and quantification [PDF]

2017 IEEE SENSORS, 2017
The Magnetic Flux Leakage (MFL) testing method is a well-established branch of electromagnetic non-destructive testing technology extensively used to observe, analyze and estimate the level of imperfections (cracks, corrosions, pits, dents, etc.) affecting the quality of ferromagnetic steel structures.
Okolo, Chukwunonso K., Meydan, Turgut
openaire   +2 more sources

Research of impact factors of wire rope flaw detector based on principle of magnetic flux leakage

Gong-kuang zidonghua, 2015
The paper introduced magnetic flux leakage testing principle of wire rope flaw detector, and used finite element analysis method to analyze impact factors of detection results of wire rope flaw detector based on flux leakage testing principle, the impact
ZHANG Cao, ZHU Chengjian, LIU Jiankang
doaj   +1 more source

Detection of off-pulse emission from PSR B0525+21 and PSR B2045-16

, 2011
We report the detection of off-pulse emission from two long period pulsars PSR B0525+21 and PSR B2045-16 using the Giant Metrewave Radio Telescope (GMRT).
Athreya, Baars, Blandford, Chatterjee, Dipanjan Mitra, Everett, Frail, Frail, Gaensler, Giacani, Glushak, Gopal-Krishna, Hankins, Lorimer, Lyne, Mitra, Perley, Perry, Radhakrishnan, Rahul Basu, Ramana Athreya, Schönhardt, Schönhardt, Spitkovsky, Swarup, Weiler   +25 more
core   +1 more source

Magnetohydrodynamic waves in a compressible magnetic flux tube with elliptical cross-section [PDF]

, 2008
Aims. The propagation of magnetohydrodynamic (MHD) waves in a finite, compressible magnetic flux tube with an elliptical cross-section embedded in a magnetic environment is investigated. Methods.
Erdelyi, R., Morton, R.J.
core   +1 more source

Rail Magnetic Flux Leakage Detection and Data Analysis Based on Double-Track Flaw Detection Vehicle

Processes, 2023
The rapid development of the railway industry has brought convenience to people’s lives. However, with the high speed, high frequency and heavy load characteristics of rail use, the safety of rail is seriously threatened.
Yi Wang, Yuhui Wang, P. Wang, Kailun Ji, Jun Wang, Jie Yang, Yuan Shu   +6 more
semanticscholar   +1 more source