A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Visual ACFM System Modeling and Optimization for Accurate Measurement of Underwater Cracks
Alternating current field measurement (ACFM) has been proven to be a promising technique for sizing cracks on underwater structures. Precision and visualization are two big challenges for measuring underwater structure cracks, which is constrained by signal attenuation, interference factor and lags of signal processing. In this paper, an optimum visual ACFM (VACFM) system based on time-constant method (TCM) is proposed for visualization and accurate measurement of underwater structure cracks. Based on optimized results by finite element model (FEM), a novel probe and signal processing system are developed and sealed. Results obtained from crack inspection experiment with TCM show that the VACFM system is able to size the lengths and visually display the profiles of underwater structure cracks. The measuring errors of the crack length increase as the scanning speed increases; it is less than 10% at scanning speed of 3.81 mm/s, and smaller to longer cracks.
Visual ACFM System Modeling and Optimization for Accurate Measurement of Underwater Cracks
Alternating current field measurement (ACFM) has been proven to be a promising technique for sizing cracks on underwater structures. Precision and visualization are two big challenges for measuring underwater structure cracks, which is constrained by signal attenuation, interference factor and lags of signal processing. In this paper, an optimum visual ACFM (VACFM) system based on time-constant method (TCM) is proposed for visualization and accurate measurement of underwater structure cracks. Based on optimized results by finite element model (FEM), a novel probe and signal processing system are developed and sealed. Results obtained from crack inspection experiment with TCM show that the VACFM system is able to size the lengths and visually display the profiles of underwater structure cracks. The measuring errors of the crack length increase as the scanning speed increases; it is less than 10% at scanning speed of 3.81 mm/s, and smaller to longer cracks.
Visual ACFM System Modeling and Optimization for Accurate Measurement of Underwater Cracks
Yuan, Xin’an (author) / Li, Wei (author) / Zhao, Jianming (author) / Yin, Xiaokang (author) / Li, Xiao (author) / Zhao, Jianchao (author)
Recent Development of Alternating Current Field Measurement Combine with New Technology ; Chapter: 7 ; 115-130
2024-07-05
16 pages
Article/Chapter (Book)
Electronic Resource
English
The Measurement of Surface Breaking Cracks by the Electrical Systems ACPD/ACFM
| British Library Online Contents | 1994
The Quantitative Measurement Model of ACFM Based on Swept Frequency Method
| British Library Online Contents | 2007
Visual Reconstruction of Irregular Crack in Austenitic Stainless Steel Based on ACFM Technique
| Springer Verlag | 2024
| British Library Online Contents | 2016