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| Damage Identification Method of Derrick Steel Structure Based on Time-domain Multi-parameter Information Fusion and Machine Learning Algorithm |
| HUANG Yan,HAN Dongying,ZHU Guoqing,LI Yuefeng,LI Kexin |
| School of Vehicles and Energy, Yanshan University, Qinhuangdao, Hebei 066004, China |
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Abstract To avoid the safety hazards caused by structural damage during the operation of derrick steel structures, a method of derrick steel structure damage identification based on principal component analysis and random forest algorithm is proposed by combining time-domain multi-parameter information fusion with machine learning algorithms based on the displacement response signal of derrick steel structures. The acceleration response signal of the derrick steel structure under the impact load is extracted using the acceleration sensor, and the displacement response signal is obtained by processing the acceleration response signal, and three time-domain features containing the impulse factor, margin factor and cliffness are extracted; the three features are fused into a new comprehensive time-domain feature using principal component analysis, and most of the information contained in the original signal is retained; the processed data is fed into the random forest algorithm model for derrick steel structure damage identification, the whole process only needs to collect the post-damage signal, not the pre-damage signal. The above damage identification model was used to simulate the finite element model of the derrick steel structure, and the experimental results of the ZJ70 derrick steel structure laboratory model were also analysed. The analysis results show that the above damage identification method can accurately and efficiently determine the single or multiple damage of the derrick steel structure, and the correct rate of judgment is over 90%.
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Received: 17 November 2022
Published: 23 May 2024
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2024, Vol. 45 
