Nondestructive Inspection of Reinforced Concrete Utility Poles with ISOMAP and Random Forest

Reinforced concrete poles are very popular in transmission lines due to their economic efficiency. However, these poles have structural safety issues in their service terms that are caused by cracks, corrosion, deterioration, and short-circuiting of internal reinforcing steel wires. Therefore, they...

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Main Authors: Saeed Ullah, Minjoong Jeong, Woosang Lee
Format: Article
Language:English
Published: MDPI AG 2018-10-01
Series:Sensors
Subjects:
Online Access:http://www.mdpi.com/1424-8220/18/10/3463
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author Saeed Ullah
Minjoong Jeong
Woosang Lee
author_facet Saeed Ullah
Minjoong Jeong
Woosang Lee
author_sort Saeed Ullah
collection DOAJ
description Reinforced concrete poles are very popular in transmission lines due to their economic efficiency. However, these poles have structural safety issues in their service terms that are caused by cracks, corrosion, deterioration, and short-circuiting of internal reinforcing steel wires. Therefore, they must be periodically inspected to evaluate their structural safety. There are many methods of performing external inspection after installation at an actual site. However, on-site nondestructive safety inspection of steel reinforcement wires inside poles is very difficult. In this study, we developed an application that classifies the magnetic field signals of multiple channels, as measured from the actual poles. Initially, the signal data were gathered by inserting sensors into the poles, and these data were then used to learn the patterns of safe and damaged features. These features were then processed with the isometric feature mapping (ISOMAP) dimensionality reduction algorithm. Subsequently, the resulting reduced data were processed with a random forest classification algorithm. The proposed method could elucidate whether the internal wires of the poles were broken or not according to actual sensor data. This method can be applied for evaluating the structural integrity of concrete poles in combination with portable devices for signal measurement (under development).
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spelling doaj.art-c670ef3f53b44e0abeb847d5c067dbd42022-12-22T02:58:37ZengMDPI AGSensors1424-82202018-10-011810346310.3390/s18103463s18103463Nondestructive Inspection of Reinforced Concrete Utility Poles with ISOMAP and Random ForestSaeed Ullah0Minjoong Jeong1Woosang Lee2University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, KoreaKorea Institute of Science and Technology Information (KISTI), 245 Daehak-ro, Yuseong-gu, Daejeon 34141, KoreaSmart C&S Co., Ltd., Yongsan-dong, Yuseong-gu, Daejeon 34141, KoreaReinforced concrete poles are very popular in transmission lines due to their economic efficiency. However, these poles have structural safety issues in their service terms that are caused by cracks, corrosion, deterioration, and short-circuiting of internal reinforcing steel wires. Therefore, they must be periodically inspected to evaluate their structural safety. There are many methods of performing external inspection after installation at an actual site. However, on-site nondestructive safety inspection of steel reinforcement wires inside poles is very difficult. In this study, we developed an application that classifies the magnetic field signals of multiple channels, as measured from the actual poles. Initially, the signal data were gathered by inserting sensors into the poles, and these data were then used to learn the patterns of safe and damaged features. These features were then processed with the isometric feature mapping (ISOMAP) dimensionality reduction algorithm. Subsequently, the resulting reduced data were processed with a random forest classification algorithm. The proposed method could elucidate whether the internal wires of the poles were broken or not according to actual sensor data. This method can be applied for evaluating the structural integrity of concrete poles in combination with portable devices for signal measurement (under development).http://www.mdpi.com/1424-8220/18/10/3463nondestructive inspectionmachine learningdimensionality reductionclassificationISOMAPrandom forest
spellingShingle Saeed Ullah
Minjoong Jeong
Woosang Lee
Nondestructive Inspection of Reinforced Concrete Utility Poles with ISOMAP and Random Forest
Sensors
nondestructive inspection
machine learning
dimensionality reduction
classification
ISOMAP
random forest
title Nondestructive Inspection of Reinforced Concrete Utility Poles with ISOMAP and Random Forest
title_full Nondestructive Inspection of Reinforced Concrete Utility Poles with ISOMAP and Random Forest
title_fullStr Nondestructive Inspection of Reinforced Concrete Utility Poles with ISOMAP and Random Forest
title_full_unstemmed Nondestructive Inspection of Reinforced Concrete Utility Poles with ISOMAP and Random Forest
title_short Nondestructive Inspection of Reinforced Concrete Utility Poles with ISOMAP and Random Forest
title_sort nondestructive inspection of reinforced concrete utility poles with isomap and random forest
topic nondestructive inspection
machine learning
dimensionality reduction
classification
ISOMAP
random forest
url http://www.mdpi.com/1424-8220/18/10/3463
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