Design of an FPGA-Based Eddy Current Instrument for the Detection of Corrosion Pits

Sergio Rodriguez; Yuxi Wang; Robert Akid; Rafael Leiva; Wualiang Yin

Design of an FPGA-Based Eddy Current Instrument for the Detection of Corrosion Pits

Sergio Rodriguez, Yuxi Wang, Robert Akid, Rafael Leiva, Wualiang Yin

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

Abstract

This paper presents a method for pitting corrosion detection using a custom developed instrument based on the eddy current testing principle. Previously, eddy current testing has been used in NDT applications where large features such as cracks are detected. However, for pitting corrosion of a size of the order of 0.1mm remains a challenge. In this paper we discuss the development of a highly integrated, Field Programmable Gate Array (FPGA)-based digital single-frequency eddy current instrument, which has high sensitivity and is capable of detecting corrosion pits in metallic plates. Pits with controlled size were created by a micro-capillary technique operating under galvanostatic control. Experimental results show that pits created with sizes of order of 100-450 μm depth can be reliably detected and there is a good correlation between the size of the pit and the amplitude of the signal from the instrument.

Original language	English
Title of host publication	Special Issue of IEEE Transactions on Instrumentation and Measurement
Publication status	Published - 11 May 2015
Event	IEEE International Instrumentation and Measurement Technology Conference (I2MTC) - Pisa, Italy Duration: 11 May 2015 → 14 May 2015

Conference

Conference	IEEE International Instrumentation and Measurement Technology Conference (I2MTC)
City	Pisa, Italy
Period	11/05/15 → 14/05/15

Cite this

@inproceedings{b03eeb351511447a8ba0f6722b887fe2,

title = "Design of an FPGA-Based Eddy Current Instrument for the Detection of Corrosion Pits",

abstract = "This paper presents a method for pitting corrosion detection using a custom developed instrument based on the eddy current testing principle. Previously, eddy current testing has been used in NDT applications where large features such as cracks are detected. However, for pitting corrosion of a size of the order of 0.1mm remains a challenge. In this paper we discuss the development of a highly integrated, Field Programmable Gate Array (FPGA)-based digital single-frequency eddy current instrument, which has high sensitivity and is capable of detecting corrosion pits in metallic plates. Pits with controlled size were created by a micro-capillary technique operating under galvanostatic control. Experimental results show that pits created with sizes of order of 100-450 μm depth can be reliably detected and there is a good correlation between the size of the pit and the amplitude of the signal from the instrument.",

author = "Sergio Rodriguez and Yuxi Wang and Robert Akid and Rafael Leiva and Wualiang Yin",

year = "2015",

month = may,

day = "11",

language = "English",

booktitle = "Special Issue of IEEE Transactions on Instrumentation and Measurement",

note = "IEEE International Instrumentation and Measurement Technology Conference (I2MTC) ; Conference date: 11-05-2015 Through 14-05-2015",

}

TY - GEN

T1 - Design of an FPGA-Based Eddy Current Instrument for the Detection of Corrosion Pits

AU - Rodriguez, Sergio

AU - Wang, Yuxi

AU - Akid, Robert

AU - Leiva, Rafael

AU - Yin, Wualiang

PY - 2015/5/11

Y1 - 2015/5/11

N2 - This paper presents a method for pitting corrosion detection using a custom developed instrument based on the eddy current testing principle. Previously, eddy current testing has been used in NDT applications where large features such as cracks are detected. However, for pitting corrosion of a size of the order of 0.1mm remains a challenge. In this paper we discuss the development of a highly integrated, Field Programmable Gate Array (FPGA)-based digital single-frequency eddy current instrument, which has high sensitivity and is capable of detecting corrosion pits in metallic plates. Pits with controlled size were created by a micro-capillary technique operating under galvanostatic control. Experimental results show that pits created with sizes of order of 100-450 μm depth can be reliably detected and there is a good correlation between the size of the pit and the amplitude of the signal from the instrument.

AB - This paper presents a method for pitting corrosion detection using a custom developed instrument based on the eddy current testing principle. Previously, eddy current testing has been used in NDT applications where large features such as cracks are detected. However, for pitting corrosion of a size of the order of 0.1mm remains a challenge. In this paper we discuss the development of a highly integrated, Field Programmable Gate Array (FPGA)-based digital single-frequency eddy current instrument, which has high sensitivity and is capable of detecting corrosion pits in metallic plates. Pits with controlled size were created by a micro-capillary technique operating under galvanostatic control. Experimental results show that pits created with sizes of order of 100-450 μm depth can be reliably detected and there is a good correlation between the size of the pit and the amplitude of the signal from the instrument.

M3 - Conference contribution

BT - Special Issue of IEEE Transactions on Instrumentation and Measurement

T2 - IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

Y2 - 11 May 2015 through 14 May 2015

ER -

Design of an FPGA-Based Eddy Current Instrument for the Detection of Corrosion Pits

Abstract

Conference

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