Research on a Method for Classifying Bolt Corrosion Based on an Acoustic Emission Sensor System

Author:

Di Shuyi1,Wu Yin1ORCID,Liu Yanyi1

Affiliation:

1. College of Information Science and Technology & Artificial Intelligence, Nanjing Forestry University, Nanjing 210037, China

Abstract

High-strength bolts play a crucial role in ultra-high-pressure equipment such as bridges and railway tracks. Effective monitoring of bolt conditions is of paramount importance for common fault repair and accident prevention. This paper aims to detect and classify bolt corrosion levels accurately. We design and implement a bolt corrosion classification system based on a Wireless Acoustic Emission Sensor Network (WASN). Initially, WASN nodes collect high-speed acoustic emission (AE) signals from bolts. Then, the ReliefF feature selection algorithm is applied to identify the optimal feature combination. Subsequently, the Extreme Learning Machine (ELM) model is utilized for bolt corrosion classification. Additionally, to achieve high prediction accuracy, an improved goose algorithm (GOOSE) is employed to ensure the most suitable parameter combination for the ELM model. Experimental measurements were conducted on five classes of bolt corrosion levels: 0%, 25%, 50%, 75%, and 100%. The classification accuracy obtained using the proposed method was at least 98.04%. Compared to state-of-the-art classification diagnostic models, our approach exhibits superior AE signal recognition performance and stronger generalization ability to adapt to variations in working conditions.

Funder

the National Natural Science Foundation of China

the Qing Lan Project of Jiangsu colleges and universities

Publisher

MDPI AG

Reference29 articles.

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