Identification of Structural Sealant Damage in Hidden Frame Glass Curtain Wall Based on Curvature Mode
Source abstract
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.
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Research context
OpenAlex topics: Structural Health Monitoring Techniques · Structural Analysis of Composite Materials · Wind and Air Flow Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mechanical and Electronic Engineering, Shandong Jianzhu University, Jinan 250101, China
Shandong Construction Development Research Institute, Jinan 250024, China
Funding
Natural Science Foundation of Shandong Province · National Natural Science Foundation of China · Shandong Key R&D Program—Innovation Empowerment Initiative for Tech SMEs
References (40)
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