Study on Detection Degree of Exterior Wall Tile Defects by Applying Infrared Thermal Image for Various Solar Irradiance

• Main Authors: FENG, GUAN-KAI, 馮冠凱
• Other Authors: WENG, CHIA-LIANG
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/5wq434

碩士 === 國立高雄科技大學 === 營建工程系 === 107 === In recent years, the deterioration and falling of the exterior wall tiles lead to risk of public safety and has become a big issue in Taiwan. The most reliable method for detecting exterior wall is the tap-tone diagnostic method, but the cost for scaffolding is too high to be easily afforded by building’s owner. Here an alternative non-destructive infrared thermal imaging method is developed and gradually adopted, although it can be quickly and effectively identify regional, need to choose the right time and the wall must reach a certain degree of heating when inspecting, due to the air layer generated from delamination, there is a temperature difference between normal exterior wall area and defective area, which can be immediately detected by infrared thermography. Therefore, which is administered as a way to standardize the process for the next very important issue. First, this study did literature review to understand the research status , and set up the wall construction with tiles, embed different defect types (area, depth) in the wall. Then use heater to simulate heating of the solar irradiance and continuous observe with thermal infrared camera. It will collate the results for comparison analysis. Research found that the temperature difference between t normal exterior wall area and defective area of each tile defect type is affected by the difference in heating energy. Furthermore, the maximum temperature difference of different defects is in the same heating range, and is not affected by the thickness of the wall. Additionally, this study provide suggestions of better detection time of each direction of building facade for future reference.