超聲相控技術(shù)在復(fù)合材料缺陷檢測(cè)中的應(yīng)用
[Abstract]:At present, composite materials have been applied more and more in aerospace, aviation, automobile and construction industries because of their light, high strength and excellent properties. Because of the complexity of molding and the possible problems in fabrication, the composites are prone to various defects and damage, so it is necessary to carry out nondestructive testing. In view of the extensive use of new composite materials in the industrial field, its stability has become the focus of increasing attention, so a new requirement for nondestructive testing of composite materials is put forward. As a way of nondestructive testing, ultrasonic phased array technology has become a hot spot in international research. Its detection efficiency is higher than that of traditional nondestructive testing technology, and the professional quality of operators is relatively low. Therefore, the study of ultrasonic phased array technology has certain practical significance. In this paper, the characteristics of common damage of composite materials and the advantages of ultrasonic phased array detection are studied, and a complete detection scheme is designed. Through theoretical analysis and calculation simulation of sound field directivity of ultrasonic phased array, the array element spacing and array length are discussed. The effect of the number of array elements, the width of array elements and the deflection angle on the beam deflection focusing is obtained by controlling the delay time. It provides a theoretical basis for the final selection of phased array transducer parameters. According to the characteristics of sound field directivity, the appropriate parameters of phased array probe are selected, and then the returned scanning images are analyzed to judge the defect type and related data. The ultrasonic phased array technology has a great advantage in detecting the defects of new composite materials. At present, in the process of ultrasonic phased array detection, the defect identification of the testing results still needs to be analyzed by the work experience of the examiners. Therefore, in order to better analyze and identify the defect detection results of composite materials, By comparing BP neural network and RBF neural network algorithm, it is concluded that the automatic defect recognition method based on RBF neural network is more suitable for aluminum alloy composite material detection within the range of error.
【學(xué)位授予單位】:中國(guó)民航大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:TB33;TB302.5
【參考文獻(xiàn)】
相關(guān)期刊論文 前5條
1 黃景興;朱政;丁能圣;閆麗永;方慧波;;復(fù)合材料層壓板的超聲相控陣檢測(cè)[J];無損檢測(cè);2012年01期
2 邵鳳和;徐東杰;石秀榮;莊鳳冬;;超聲相控陣技術(shù)在焊接接頭檢測(cè)中的應(yīng)用[J];機(jī)電信息;2011年15期
3 姬毓君;李劍;;LX便攜式相控陣輪輞探傷儀在動(dòng)車組輪對(duì)探傷中的應(yīng)用[J];中國(guó)鐵路;2011年02期
4 李懷富;李業(yè)書;呂貴平;田卡嘉;;超聲相控陣技術(shù)在復(fù)合材料檢測(cè)上的應(yīng)用[J];玻璃鋼/復(fù)合材料;2010年02期
5 葛邦;楊濤;高殿斌;李明;;復(fù)合材料無損檢測(cè)技術(shù)研究進(jìn)展[J];玻璃鋼/復(fù)合材料;2009年06期
相關(guān)博士學(xué)位論文 前1條
1 鮑曉宇;相控陣超聲檢測(cè)系統(tǒng)及其關(guān)鍵技術(shù)的研究[D];清華大學(xué);2003年
相關(guān)碩士學(xué)位論文 前10條
1 鄧江敏;電站鍋爐T型接管角接接頭相控陣檢測(cè)技術(shù)研究[D];南昌航空大學(xué);2012年
2 張祥林;復(fù)合材料R角部位缺陷檢測(cè)技術(shù)與超聲C掃描檢測(cè)工藝技術(shù)研究[D];哈爾濱工程大學(xué);2012年
3 曹賀;車軸探傷系統(tǒng)缺陷判傷算法研究[D];西南交通大學(xué);2012年
4 史振;超聲相控陣成像檢測(cè)技術(shù)的研究[D];南京航空航天大學(xué);2012年
5 王曉媛;發(fā)動(dòng)機(jī)缸體內(nèi)腔的超聲相控陣檢測(cè)[D];天津大學(xué);2012年
6 劉婧;超聲相控陣T型焊縫缺陷檢測(cè)技術(shù)的研究[D];天津大學(xué);2010年
7 張聰穎;超聲相控陣檢測(cè)系統(tǒng)圖像處理和成像技術(shù)的研究[D];天津大學(xué);2010年
8 楊良軍;多通道全覆蓋鋼管壁厚檢測(cè)技術(shù)的應(yīng)用研究[D];合肥工業(yè)大學(xué);2009年
9 宋育;飛機(jī)復(fù)合材料無損檢測(cè)敲擊技術(shù)的研究和應(yīng)用[D];南京航空航天大學(xué);2009年
10 李媛;不等厚金屬非金屬復(fù)合構(gòu)件的相控陣超聲脫粘檢測(cè)技術(shù)研究[D];中北大學(xué);2008年
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