本文選題：紅外熱像技術(shù) + 建筑外墻飾面層��； 參考：《武漢大學(xué)》2014年博士論文

【摘要】：建筑外墻飾面層的檢測對預(yù)防飾面層脫落、保障人民的生命財產(chǎn)安全具有十分重要的意義。與傳統(tǒng)的檢測方法(目測法、錘擊法、拉拔法等)相比,紅外熱像技術(shù)具有非接觸、遠距離、快速、大面積檢測、結(jié)果直觀等優(yōu)點,為現(xiàn)代無損檢測技術(shù)注入了新的活力,在建筑外墻飾面粘貼質(zhì)量檢測方面具有廣闊的應(yīng)用前景。但紅外熱像技術(shù)在我國建筑外墻飾面層粘結(jié)質(zhì)量檢測中的應(yīng)用起步較晚、實際案例較少,目前主要處于定性化分析階段,尚缺乏定量化分析方法。本文在甘肅省科技支撐計劃項目(編號：1104GKCA053)的資助下,開展紅外熱像技術(shù)檢測建筑外墻飾面層粘結(jié)質(zhì)量的研究,主要工作及成果如下： (1)考慮飾面層顏色、內(nèi)部缺陷的面積及厚度等因素,分別設(shè)計制作5組20個室內(nèi)空鼓試件以及3組24個室外空鼓試件,進行紅外熱像技術(shù)檢測面磚飾面層內(nèi)部缺陷的室內(nèi)與室外試驗研究。結(jié)果表明：紅外熱像技術(shù)檢測效果受熱源激勵方式、缺陷大小、飾面層顏色、紅外熱像儀豎向拍攝角度以及發(fā)射率等因素的影響,且飾面層表面溫度沿內(nèi)部缺陷寬度方向呈規(guī)律性變化,為紅外熱像技術(shù)檢測飾面層內(nèi)部缺陷面積的定量化分析提供了依據(jù)。 (2)基于試驗結(jié)果,利用MATLAB圖像處理技術(shù)及像素分析方法,開展紅外熱像技術(shù)檢測建筑外墻飾面層內(nèi)部缺陷面積的定量化分析研究。結(jié)果表明：MATLAB的圖像處理工具箱能對建筑外墻飾面層的紅外熱像圖進行有效的數(shù)字化處理；沿內(nèi)部缺陷寬度方向的飾面層表面溫差-位置曲線形狀與缺陷寬度相關(guān)；建立的內(nèi)部缺陷面積估算公式為紅外熱像檢測技術(shù)的相關(guān)研究及實際工程應(yīng)用提供參考。 (3)利用ABAQUS有限元軟件的用戶子程序接口功能,并考慮風(fēng)速及日太陽輻射總量等因素對實際環(huán)境條件下的飾面層表面溫度進行模擬分析。結(jié)果表明：基于ABAQUS有限元軟件的用戶子程序接口功能可對飾面層表面溫度在實際環(huán)境下的變化規(guī)律進行有效模擬；飾面層表面溫度在一天內(nèi)呈階段性變化；在升溫階段,缺陷位置中心點處飾面層的表面溫度與環(huán)境溫度相關(guān)；飾面層的表面溫度受風(fēng)速及日太陽輻射總量的影響,為紅外熱像技術(shù)檢測建筑外墻飾面層粘結(jié)質(zhì)量的實際環(huán)境的選擇提供參考。 (4)在試驗研究的基礎(chǔ)上,結(jié)合有限元分析結(jié)果,制訂了紅外熱像技術(shù)檢測建筑外墻飾面層粘結(jié)質(zhì)量的檢測流程,開展了實際工程的紅外熱像技術(shù)檢測,達到了預(yù)期的檢測效果,為紅外熱像技術(shù)的應(yīng)用起到了良好的推動作用。 最后,在總結(jié)全文工作的基礎(chǔ)上,提出了本課題的研究展望。
[Abstract]:The detection of exterior wall veneer layer is very important to prevent the decor layer from falling off and to ensure the safety of people's life and property. Compared with traditional testing methods (visual test, hammering, drawing, etc.), infrared thermal imaging technology has the advantages of non-contact, long distance, fast, large area detection, visual results, etc., which has injected new vitality for modern nondestructive testing technology. It has a broad application prospect in quality inspection of exterior wall veneer. However, the application of infrared thermal imaging technology in the inspection of the bonding quality of exterior wall veneer layer in our country is late, and the actual cases are less. At present, it is mainly in the stage of qualitative analysis and lacks of quantitative analysis method. In this paper, supported by Gansu Province Science and Technology support Project (No.: 1104GKCA053), the infrared thermal image technology is used to test the bonding quality of exterior wall facing layer. The main work and results are as follows: 1) considering the color of the finishing layer, the area and thickness of the interior defects, 5 groups of 20 indoor empty drum specimens and 3 groups of 24 outdoor empty drum specimens were designed and made. The indoor and outdoor experiments were carried out to detect the inner defects of the finishing layer of brick by infrared thermography. The results show that the effect of infrared thermal imaging technology is affected by the excitation mode of heat source, the size of defects, the color of finishing layer, the vertical shooting angle and emissivity of infrared thermal imager, etc. The surface temperature of the decorative layer changes regularly along the width of the inner defect, which provides a basis for the quantitative analysis of the inner defect area of the decorative layer by infrared thermal imaging. 2) based on the experimental results, using MATLAB image processing technology and pixel analysis method, the quantitative analysis of the inner defect area of exterior wall decoration layer is carried out by using infrared thermal image technology. The results show that the image processing toolbox of W MATLAB can effectively digitize the infrared thermal image of the exterior wall veneer layer, and the shape of the surface temperature difference and position curve along the direction of the inner defect width is related to the defect width. The internal defect area estimation formula provides a reference for the research and practical engineering application of infrared thermal image detection technology. Using the user subroutine interface function of ABAQUS finite element software and considering the wind speed and the total amount of solar radiation, the surface temperature of the decorative layer in the actual environment is simulated and analyzed. The results show that the interface function of user subroutine based on ABAQUS finite element software can effectively simulate the variation of the surface temperature of the veneer layer in the actual environment, the surface temperature of the veneer layer changes in a phase in one day, and in the stage of heating up, The surface temperature of the veneer at the center of the defect is related to the ambient temperature, and the surface temperature of the veneer is affected by the wind speed and the total solar radiation. It provides a reference for the selection of the actual environment for the inspection of the bonding quality of the exterior wall veneering layer by the infrared thermal imaging technology. 4) based on the experimental research and the results of finite element analysis, the detection flow of infrared thermal image technology for detecting the bonding quality of exterior wall veneering layer of building has been established, and the infrared thermal image technology detection of actual engineering has been carried out, which has achieved the expected detection effect. It has played a good role in promoting the application of infrared thermal imaging technology. Finally, on the basis of summing up the whole paper, the research prospect of this topic is put forward.
【學(xué)位授予單位】：武漢大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2014
【分類號】：TU746.2;TU767

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