Work

Identification of Structural Sealant Damage in Hidden Frame Glass Curtain Wall Based on Curvature Mode

Year: 2025

Type: article

Abstract: To assess structural sealant damage in hidden frame glass curtain walls (HFGCWs) during service, damage states were simulated by controlled cutting with varying incision lengths. Quantitative identification challenges were investigated through natural frequency and curvature modal difference (CMD) analyses at multiple test points. The results indicate that natural frequency decreases with increasing damage severity, while the first-order curvature mode difference (FCMD) exhibits localized abrupt changes in damaged regions. Boundary modes provide more targeted and accurate damage identification. The peak value of the FCMD mutation region enables precise damage localization. A quantitative damage identification threshold of 0.1205 was derived from FCMD distribution characteristics in boundary regions. By leveraging boundary mode features, modal testing efficiency is optimized, reducing the required acquisition nodes and effectively guiding structural sealant damage detection in engineering applications.

Source: Applied Sciences

DOI: 10.3390/app15126568

Authors: Yuqin Yan, Xiangcheng Wang, Xiaonan Li, Xin Zhang, Fan Yang, Jie Sun

Institution: Shandong Jianzhu University

Language: English

Topic: Structural Health Monitoring Techniques

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,896

Funders: Texas Space Grant Consortium, National Natural Science Foundation of China, Natural Science Foundation of Shandong Province