几种压力容器材料的γ射线衰减性能研究及应用分析
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摘要
理论计算了Q345R、0Cr18Ni9、2A12、玻纤复合板和芳纶复合板五种材料对γ射线的衰减系数。结果表明:在相同厚度下,纤维复合板对γ射线的衰减系数均小于Q345R、0Cr18Ni9和2A12的衰减系数,芳纶复合板的衰减系数仅为Q345R衰减系数的20%。同时,利用60Co辐射装置测定了2A12、玻纤复合板和芳纶复合板对γ射线的衰减系数,实测值与理论估算值基本一致。此外,还比较了不同材料的受压筒体对γ射线的衰减性能,结果显示:纤维复合材料的筒体对γ射线有良好的透过性。
This paper focuses on the theoretical calculation ofγ-ray attenuation coefficient for some vessel materials,which include Q345 R,0Cr18Ni9,2A12,glassfiber composite plate and Kevlar composite plate.The results show that the attenuation coefficient of the fiber composite plate is less than those of Q345 R,0Cr18Ni9,2A12 with the same thickness.The attenuation coefficient of Kevlar is only 20 percent of Q345 R.The theoretical results of three materials,i.e.2A12,glassfiber,and Kevlar are consistent with the measured results tested by 60 Co radiation.Moreover,the performances of attenuation of cylinder with different materials to γ-ray are compared,and the results show that the cylinder made of fiber composite is endowed with betterγ-ray radiability than cylinders made of other materials.
This paper focuses on the theoretical calculation ofγ-ray attenuation coefficient for some vessel materials,which include Q345 R,0Cr18Ni9,2A12,glassfiber composite plate and Kevlar composite plate.The results show that the attenuation coefficient of the fiber composite plate is less than those of Q345 R,0Cr18Ni9,2A12 with the same thickness.The attenuation coefficient of Kevlar is only 20 percent of Q345 R.The theoretical results of three materials,i.e.2A12,glassfiber,and Kevlar are consistent with the measured results tested by 60 Co radiation.Moreover,the performances of attenuation of cylinder with different materials to γ-ray are compared,and the results show that the cylinder made of fiber composite is endowed with betterγ-ray radiability than cylinders made of other materials.
引文
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[2]郑世才.射线实时成像检验技术与射线照相检验技术的等价性讨论[J].无损检测,2003,25(10):500-503.(ZHENGShi-cai.Discussion on the equivalence of radioscopy and radioraphy[J].Nondestructive Testing,2003,25(10):500-503.)
[3]刘自霞,陆春海,陈敏,等.不同材料对γ射线衰减系数的MCNP模拟[J].核电子学与探测技术,2013,33(11):1 376-1 380(LIU Zi-xia,LU Chun-hai,CHEN Min,et al.Different materials forγ-ray attenuation coefficient of MCNP simulation[J].Nuclear Elctronics&Detection Technology,2013,33(11):1 376-1 380.)
[4]压力容器实用技术丛书编写委员会.压力容器用材料及热处理[M].北京:化学工业出版社,2005:94-102.(The Editorial Committee of Pressure Vessels Practical Technology Series.Pressure Vessels Material and Its Heat Treatment[M].Beijing:Chemical Industry Press,2005:94-102.)
[5]凌球,郭兰英.核辐射探测[M].北京:原子能出版社,1992:32-35.(LING Qiu,GUO Lan-ying.Nuclear Radiation Detection[M].Beijing:Atomic Energy Press,1992:32-35.)
[6]梅镇岳.β和γ放射性[M].北京:科学出版社,1964:95-98.(MEI Zhen-yue.The Radioactivity ofβandγ[M].Beijing:Science Press,1964:95-98.)
[7]压力容器实用技术丛书编写委员会.压力容器设计手册[M].北京:化学工业出版社,2006:189-192.(The Editorial Committee of Pressure Vessels Practical Technology Series.Pressure Vessels Design Handbook[M].Beijing:Chemical Industry Press,2006:189-192.)