School of Mechanical & Automotive Engineering, South China University of Technology, Guangzhou 510641, China.
Sensors (Basel). 2018 Oct 23;18(11):3594. doi: 10.3390/s18113594.
Adhesive bonded structure damage of hidden frame glass curtain wall will cause falling glass, which threatens the security of people and property. Therefore, the damage detection of the adhesive bonded structure of glass curtain wall has great significance. In this paper, active thermal sensing technology for bonding structure damage detection was introduced. Firstly, the thermal wave propagation of bonded structure was analyzed. Second, the simulated annealing algorithm and TracePro simulation were utilized to design the heat source. Thirdly, the platform of active thermal sensing was built, and experiments were conducted. Finally, image fusion enhancement of Laplacian pyramid was utilized to the enhancement process of thermal images. The simulation results showed that the irradiance of the cross-optimization was more uniform, and the uniformity was 17.50% higher than the original design value. The experiments results showed that defects of different sizes and depths can be distinguished. The gray differences of the damages on the depth of 0 mm and 4 mm were 0.025 and 0.045, respectively. The thermal wave testing can detect damage intuitively and rapidly, which is significant for the future research of unmanned detection of bonding structure damage of hidden frame glass curtain wall.
隐框玻璃幕墙的胶粘结构损伤会导致玻璃脱落，从而威胁到人身和财产安全。因此，对玻璃幕墙胶粘结构的损伤检测具有重要意义。本文介绍了用于粘结结构损伤检测的主动热感技术。首先，分析了粘结结构的热波传播。其次，利用模拟退火算法和 TracePro 模拟设计了热源。然后，搭建了主动热感平台，并进行了实验。最后，对热图像的增强过程利用了拉普拉斯金字塔的图像融合增强。仿真结果表明，交叉优化后的辐照度更加均匀，均匀性比原始设计值提高了 17.50%。实验结果表明，不同尺寸和深度的缺陷都可以被区分。深度为 0mm 和 4mm 的损伤的灰度差异分别为 0.025 和 0.045。热波检测可以直观、快速地检测损伤，对未来隐框玻璃幕墙胶粘结构损伤的无人检测研究具有重要意义。
