New development of sensitive magnetic sensors for nondestructive evaluation of structural materials

Design of a New Non-Contact Torque Sensor for Rotating Stepped Shaft by Monitoring Magnetic Field

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.44-47.547 ◽

2010 ◽

Vol 44-47 ◽

pp. 547-551 ◽

Cited By ~ 1

Author(s):

Gang Shi ◽

Na Wang ◽

Chong Du Cho

Keyword(s):

Magnetic Field ◽

Power Transmission ◽

Low Cost ◽

Time Algorithm ◽

Magnetic Sensors ◽

Torque Sensor ◽

Rotating Shaft ◽

Stepped Shaft ◽

New Development ◽

Contact Sensor

In this paper, a new non-contact sensor is presented for detecting torque of a rotating stepped shaft which is frequently employed in power transmission system. This sensor doesn’t require cutting or lengthening the rotating shaft. Torque value is obtained by using two magnetic sensors to sense magnetic field intensity of two permanent rubber magnets fixed at the outer surface of the shaft. The phase difference between these two induction signals is used to determine torque of the stepped shaft. A real-time algorithm based on LabVIEW is employed to obtain the measured torque value. The present work has demonstrated that non-contact torque measurement for rotating stepped shaft by monitoring magnetic field is feasible. It seems like that further development will result in low-cost torque sensor. It is hoped that this kind of sensor can lead to a new development direction of torque sensor for rotating shaft.

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206 Nondestructive evaluation of structural materials based on terahertz radiation measurements

The Proceedings of Conference of Kansai Branch ◽

10.1299/jsmekansai.2010.85._2-6_ ◽

2010 ◽

Vol 2010.85 (0) ◽

pp. _2-6_

Author(s):

Hiroki KAWANO ◽

Takahide SAKAGAMI ◽

Shiro KUBO ◽

Masanori HANGYO ◽

Takeshi NAGASHIMA

Keyword(s):

Nondestructive Evaluation ◽

Terahertz Radiation ◽

Structural Materials ◽

Radiation Measurements

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Pulsed Thermal Tomography Nondestructive Evaluation of Additively Manufactured Reactor Structural Materials

10.13182/t30825 ◽

2019 ◽

Author(s):

S. Bakhtiari ◽

W. Cleary ◽

T. Elmer ◽

A. Heifetz ◽

B. Khaykovich ◽

...

Keyword(s):

Nondestructive Evaluation ◽

Structural Materials ◽

Thermal Tomography

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Nondestructive Techniques for Characterizing Mechanical Properties of Structural Materials — An Overview

Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; Process Industries ◽

10.1115/86-gt-75 ◽

1986 ◽

Author(s):

Alex Vary ◽

Stanley J. Klima

Keyword(s):

Mechanical Properties ◽

Fracture Toughness ◽

Nondestructive Evaluation ◽

Elastic Moduli ◽

Flaw Detection ◽

Structural Materials ◽

Tensile Shear ◽

Quantitative Characterization ◽

Nondestructive Techniques ◽

Structural Parts

An overview of nondestructive evaluation (NDE) is presented to indicate the availability and application potentials of techniques for quantitative characterization the mechanical properties of structural materials. The purpose of this brief survey is to review NDE techniques that go beyond the usual emphasis on flaw detection and characterization. This survey covers current and emerging NDE techniques that can verify and monitor entrinsic properties (e.g., tensile, shear, and yield strengths; fracture toughness, hardness; ductility; elastic moduli) and underlying microstructural and morphological factors. Most of the techniques described are, at present, neither widely applied nor widely accepted in commerce and industry because they are still emerging from the laboratory. The limitations of the techniques may be overcome by advances in applications research and instrumentation technology and perhaps by accommodations for their use in the design of structural parts.

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