Examination of the Inductance Method for Non-Destructive Testing in Structural Metallic Material by Means of the Pancake-type Coil

Oka, M.; Yakushiji, Terutoshi; Tsuchida, Yuji; Enokizono, Masato

doi:10.14243/jsaem.21.488

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…It is well-known that the permeability and resistivity ( ) of the specimen can change as a result of fatigue damage. On the other hand, the eddy-current testing method has also been researched as a fatigue evaluation method for steel and stainless steel, regardless of their magnetic properties [9,10,11]. The inductance method is an eddy-current testing method.…”

Section: Introductionmentioning

confidence: 99%

The evaluation of fatigue caused by plane-bending stress on stainless steel using the stacked-coil type magnetic sensor

Oka¹,

Yakushiji²,

Enokizono³

2017

AIP Conference Proceedings

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Abstract. To prevent injury from metal degradation of structural metallic material such as stainless steel, we have previously proposed fatigue evaluation methods such as the remnant magnetization method and the inductance method. These fatigue evaluation methods showed a positive correlation between the magnetic sensor output signal and the amount of the plane-bending fatigue damage in stainless steel. In this study, a stacked-coil type magnetic sensor was used to evaluate the accuracy of the plane-bending fatigue damage of austenite stainless steel such as SUS304 (ANSI304). The principle of the stacked-coil type magnetic sensor is based on an eddy-current test method. This magnetic sensor was composed of a pick-up coil, an excitation coil, and a Mn-Zn ferrite core. The pick-up coil was composed of two bobbin type coils that were connected differentially. Moreover, the amplitude and the phase angle of the output voltage of the pickup coil were used to evaluate the amount of the plane-bending fatigue damage of SUS304. Results demonstrated a close correlation between the amplitude and the phase angle of the stacked-coil type magnetic sensor output voltage and the plane-bending fatigue damage of SUS304.

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Section: Introductionmentioning

confidence: 99%

The evaluation of fatigue caused by plane-bending stress on stainless steel using the stacked-coil type magnetic sensor

Oka¹,

Yakushiji²,

Enokizono³

2017

AIP Conference Proceedings

Self Cite

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“…The ECT method obviously evaluated plane bending fatigue damage of the ferritic stainless steel (SUS430) [10]. More recently, we performed an evaluation of pulsating tension fatigue damage for the mild steel using the eddy current testing method excited by a low excitation frequency under the DC magnetic field [11]. These fatigue evaluation methods had a good correlation between the magnetic sensor's output signal and the amount of fatigue damage in the iron-based structural materials.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Material Degradation of Austenitic Stainless Steel under Pulsating Tension Stress Using Magnetic Method

Oka

Yakushiji

Enokizono³

2015

Journal of the Japan Society of Applied Electromagnetics and Me

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To prevent a serious accident by the metal degradation of a structure made of iron-based structural materials, we have already proposed some fatigue evaluation methods for various iron-based structural materials. One of these is a residual magnetization method that uses a thin-film flux-gate magnetic sensor. This method is called the perpendicular residual magnetization method. This fatigue evaluation method had a good correlation between the magnetic sensor output signal and the amount of plane bending fatigue damage in the iron-based structural materials. However, we have not yet evaluated the pulsating tension fatigue damage of iron-based structural material such as the austenitic stainless steels using this method. In this paper, we report the evaluation results of a pulsating tension fatigue damage accumulation in austenitic stainless steels (SUS316 and SUS316L) using the perpendicular residual magnetization method. From our experiment, the maximum value of the Z component residual leakage magnetic flux density clearly depends on the magnitude of pulsating tension and the number of stress cycles.

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Non-destructive Fatigue Evaluation for Iron-based Structural Metallic Material under Pulsating Tension Stress Using the Magnetic Method

Oka¹,

Yakushiji²,

Enokizono³

2015

Journal of the Japan Society of Applied Electromagnetics and Me

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Examination of the Inductance Method for Non-Destructive Testing in Structural Metallic Material by Means of the Pancake-type Coil

Cited by 3 publications

References 4 publications

The evaluation of fatigue caused by plane-bending stress on stainless steel using the stacked-coil type magnetic sensor

The evaluation of fatigue caused by plane-bending stress on stainless steel using the stacked-coil type magnetic sensor

Evaluation of the Material Degradation of Austenitic Stainless Steel under Pulsating Tension Stress Using Magnetic Method

Non-destructive Fatigue Evaluation for Iron-based Structural Metallic Material under Pulsating Tension Stress Using the Magnetic Method

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