| 航空精密铸件射线CR成像检测研究 |
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| 引用本文： | 敖波,邬冠华,邓翠贞,高鸿波.航空精密铸件射线CR成像检测研究[J].铸造,2011,60(9). |
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| 作者姓名： | 敖波 邬冠华 邓翠贞 高鸿波 |
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| 作者单位： | 南昌航空大学无损检测技术教育部重点实验室,江西南昌,330063 |
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| 摘 要： | 根据ASTM E192验收标准,对某精铸件加工的孔型和槽型缺陷,分别采用CR和C7胶片进行射线检测对比.由于CR图像灰度范围宽,细节影像不易直接观察,采用多尺度对比度增强算法提取细节信息进行增强放大,人眼可直接从增强后的图像识别细节信息.CR与C7胶片检测对比试验结果表明,CR图像的质量已达到C7胶片的检测质量,可降低检测成本和提高检测效率,能代替C7胶片实现该精铸件的数字射线照相检测.
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| 关 键 词： | 铸件 成像板 射线CR 多尺度对比度增强 |
Computed Radiography Inspection of Aero Precision Casting |
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| AO Bo,WU Guan-hua,DENG Cui-zhen,GAO Hong-bo.Computed Radiography Inspection of Aero Precision Casting[J].Foundry,2011,60(9). |
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| Authors: | AO Bo WU Guan-hua DENG Cui-zhen GAO Hong-bo |
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| Affiliation: | AO Bo,WU Guan-hua,DENG Cui-zhen,GAO Hong-bo(Key Laboratory of Nondestructive Testing(Ministry of Education),Nanchang Hangkong University,Nanchang 330063,Jiangxi,China) |
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| Abstract: | To check the detectability of computed radiography(CR)technology for defects of cavity,porosity and crack,the hole and groove were machined in the castings and inspected by CR and conventional film radiography(RT)with C7 film based on the standard of ASMT E192,and the results were compared.In CR images,details are difficult to observe due to their wide range of grey levels,therefore the multi-scale contrast enhancement algorithm for CR images was employed to enhance the subtle details;these enhanced images ... |
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| Keywords: | casting imaging plate computed radiography multi-scale contrast enhancement |
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