Work

Lamb Wave Imaging for Complex Box-Beam Structures Based on Frequency Response Function

Year: 2025

Type: conference-paper

Abstract: The box beam is the key component of box structure hoisting machinery, and its structural integrity and damage detection are extremely important for the safe operation of the hoisting machinery. In this paper, a cross-shaped dense array imaging method based on frequency response function is proposed for the damage location of box girder structure. Firstly, considering the complexity of the box girder structure, the ultrasonic guided wave propagation characteristics of the box girder structure are studied by the finite element analysis method. Secondly, an experiment is designed in the complex structure box beam to verify the effectiveness of the frequency response function (FRF) method and greatly improves the detection efficiency. Then, a cross-shaped dense array is arranged combined with the advantages of dense array according to the demand of damage location of box beam structure. Finally, the damage location of box beam structure is realized by combining the total focusing imaging algorithm and the sign coherence factor imaging method. The number of positioning errors confirms the effectiveness of the proposed method, providing a new approach for solving the problem of damage location of box beam structures.

DOI: 10.58286/31049

Authors: Wensheng Su, Zhigang Xue, Fucai Li, Yanping Zhu, Xiaolei Xu, Ziyang Ding

Institutions: Shanghai Jiao Tong University, State Key Laboratory of Mechanical System and Vibration, Beijing University of Technology

Language: English

Topic: Ultrasonics and Acoustic Wave Propagation

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Funders: National Natural Science Foundation of China, Government of Jiangsu Province

Award: G4964747077