Design Fabrication and Experimental Studies of ACFM Testing Instrument

Shang Kun Ren; Wei Fan; Bing Li

doi:10.4028/www.scientific.net/AMM.421.479

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 421Design Fabrication and Experimental Studies of...

Design Fabrication and Experimental Studies of ACFM Testing Instrument

Abstract:

The Alternating Current Field Measurement (ACFM) technique is an electromagnetic inspection method for surface crack detection and sizing. According to signal characteristics of ACFM, a detecting instrument has been designed and fabricated successfully. The ACFM inspection system is composed of signal conditioning circuit and testing system based on DSP and LABVIEW. The functions of generating exciting signal, collecting data, processing data and sending data are realized through DSP, while the functions of displaying data, storing data and calculating are achieved through the LABVIEW software. The function and performance of the instrument has been tested by experiments. It can calculate the length and depth of the crack and can facilitate the quantitative evaluation of crack as well. Its detection accuracy and performance can completely meet the requirement of practical test.

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Periodical:

Applied Mechanics and Materials (Volume 421)

Pages:

479-485

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.421.479

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Online since:

September 2013

Authors:

Shang Kun Ren, Wei Fan, Bing Li

Keywords:

ACFM, Electromagnetic Inspection, Quantitative Evaluation, Testing Instrument

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