Equipment for magnetic particle inspection

Lovejoy, David

doi:10.1007/978-94-011-1536-0_10

Cited by 3 publications

(7 citation statements)

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“…The principle of MPI is that magnetic lines of force are induced either by a magnet, electromagnet or an electric current that creates a magnetic field in the component. 37 The applied electric current can be either a direct current (DC) or an alternating current (AC). However, the use of DC increases the probability of detecting narrow cracks underneath the surface.…”

Section: Corrosion Monitoring and Detectionmentioning

confidence: 99%

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Non-destructive techniques for corrosion detection: A review

Vasagar,

Hassan,

Abdullah

et al. 2024

Corrosion Engineering, Science and Technology: The Internationa

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Corrosion detection (CD) has become a high priority in chemical industries, defense and transportation sectors to extend the life of existing or new systems while ensuring the safety of the existing components and reducing downtime to minimise economic losses. Here, this article is aimed to review and discuss non-destructive techniques used widely in the industry to detect, monitor and repair corrosion problems early on. The comprehensive review provides a detailed discussion, a functional mechanism, advantages and disadvantages of crucial non-destructive CD techniques widely used in the industry, helping the reader choose the type of corrosion monitoring methods effectively. An extensive literature review of visual and optical testing techniques, acoustic emissions, eddy current, guided wave and equipment, infrared thermography, radiographic, microwave and millimeter wave, and terahertz imaging is discussed. The underlying mechanism, its merits and limitations, along with the usage scenario, is explained that can be related across different areas making it interdisciplinary research for corrosion monitoring techniques.

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Section: Corrosion Monitoring and Detectionmentioning

confidence: 99%

“…The magnetic particles can be coloured to enhance the contrast of the visual inspection. 37,39 Commonly used particles include black iron, red and yellow iron oxides. Using a fluorescent dye coated on a magnetic particle has also been reported.…”

Section: Corrosion Monitoring and Detectionmentioning

confidence: 99%

Non-destructive techniques for corrosion detection: A review

Vasagar,

Hassan,

Abdullah

et al. 2024

Corrosion Engineering, Science and Technology: The Internationa

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“…The term NDT was used in 1868 by S.H. Saxby in an article on detecting cracks in gun barrels using magnetic inductions [ 53 ]. X-ray techniques were the first industrial applications of NDT methods, followed by magnetic particle crack detection, liquid penetrant testing, eddy current, and ultrasonic testing.…”

Section: The Relationship Between Ndt and Shm Systemsmentioning

confidence: 99%

A Systematic Review of Advanced Sensor Technologies for Non-Destructive Testing and Structural Health Monitoring

Hassani

Dackermann

2023

Sensors

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This paper reviews recent advances in sensor technologies for non-destructive testing (NDT) and structural health monitoring (SHM) of civil structures. The article is motivated by the rapid developments in sensor technologies and data analytics leading to ever-advancing systems for assessing and monitoring structures. Conventional and advanced sensor technologies are systematically reviewed and evaluated in the context of providing input parameters for NDT and SHM systems and for their suitability to determine the health state of structures. The presented sensing technologies and monitoring systems are selected based on their capabilities, reliability, maturity, affordability, popularity, ease of use, resilience, and innovation. A significant focus is placed on evaluating the selected technologies and associated data analytics, highlighting limitations, advantages, and disadvantages. The paper presents sensing techniques such as fiber optics, laser vibrometry, acoustic emission, ultrasonics, thermography, drones, microelectromechanical systems (MEMS), magnetostrictive sensors, and next-generation technologies.

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“…The current creates an electromagnetic field with an MF intensity vector → H (A/m) and a magnetic flux → B (tesla or gauss) 9 :…”

Section: Magnetic Particle Inspection Theorymentioning

confidence: 99%

“…The technician moves the solenoid laterally along the part, creating an MF that is proportional to the current in the wires, the number of turns in the current-carrying wire, and the distance from the coil. 9 The technician moves with the coil down the length of the part in approximately 0.20-m intervals, coating the part with the indicator suspension and inspecting the part with a handheld UV lamp. When external inspection is complete, the technician moves the part to the borescope station for internal inspection and then back to the MPI bed for demagnetization.…”

Section: Longitudinal Magnetization and Inspectionmentioning

confidence: 99%

Magnetic Field Exposure in a Nondestructive Testing Operation

Lippert

Lacey

Kennedy

et al. 2007

Archives of Environmental & Occupational Health

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Nondestructive testing is any technique used to inspect the integrity of a manufactured item without diminishing its future usefulness. Magnetic particle inspection is one type of nondestructive testing that uses electromagnetism in the inspection procedure, thus potentially exposing the operator to magnetic fields. During magnetic particle inspection, investigators took peak magnetic field measurements of 8 turbine engine shafts at a turbine engine overhaul and repair center. They recorded 95 peak magnetic field measurements, ranging from < 0.1 to 29.27 mT. The exposure values measured were among the highest reported in the occupational setting. Further work is needed to characterize magnetic field exposures in magnetic particle inspection operations--in particular, by differentiating magnetic field magnitude by current frequency--and to understand exposure as it relates to different types of magnetic particle inspection devices.

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Equipment for magnetic particle inspection

Cited by 3 publications

References 0 publications

Non-destructive techniques for corrosion detection: A review

Non-destructive techniques for corrosion detection: A review

A Systematic Review of Advanced Sensor Technologies for Non-Destructive Testing and Structural Health Monitoring

Magnetic Field Exposure in a Nondestructive Testing Operation

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