近幾年來由於快速掃描器的進步,加上有非接觸性、非破壞性的檢測優點,使得紅外線熱影像技術應用更加廣泛。目前熱影像可量測的範圍小至一面牆,大至整個海洋表面均可,像是軍事上的偵測、監視及測繪、工業材料的檢驗、醫療診斷、土木工程等。 由熱影像檢測混凝土版塊底下是否有缺陷的發生,可見內部淘空處,混凝土板塊表面會產生溫度異常的現象,故證明紅外線熱影像對於檢測混凝土板塊下的孔洞有一定的成效。得知缺陷的存在及範圍後,依檢測出的孔洞位置,利用其他NDT互相比對其成果,確保紅外線熱影像在混凝土版塊下檢測缺陷的可行性。 本研究蒐集、彙整國內外紅外線熱影像之相關文獻與案例並加以檢討,取馬公機場鋪面跑道研究經驗來自行分析,提出自身的分析方法,並舉出影響研判孔洞之環境因子,根據影響因素提出解決之對策,進而提出規劃之建議標準作業流程,提供國內外工程界之參考。
The infrared thermography technique is widely used for defect detection for recent years, of which the survey range can be as small as a wall or even extend to ocean surface. As abnormal response of temperature at surface of concrete slab can reflect weather the voids are under slab, it supports the effectiveness of defect detection by means of infrared thermography. By comparing to the results from other instruments, it is clear that the infrared thermography can be effectively used to locate the defect under slab. Based on past experiences and references, this study proposes a method for analyzing the images of infrared thermography from Magong air port, and several influencing factors are concurrently presented in order to plan the countermeasures as early as possible, creating a standard operating procedure for analyzing image from infrared thermography.