含能材料密度的XCT自参照测试
Self-Comparison Based X-Ray Computed Tomography for Measuring Narrow Densities of Energy Material
摘 要
运用同步测试技术和体积CT灰度值计算方法, 研究含能材料的体密度与体积CT灰度值的线性关系。以密度相近的含能材料试验件组成的体系密度作为参照, 利用各试验件的VCT灰度值计算CT密度值。试验结果表明, 采用自参照密度测试方法可以简化含能材料局部密度均匀性的测试, CT法计算获得的试验件密度值与排水法测得密度值的相对误差<0.1％。
含能材料
密度
自参照
XCT
Energy material
Density
Self-comparison
Abstract
A method, based on micro focus cone beam X-ray computed tomography, for measuring lower-range density of energy material cylinders was introduced. The linear relationship between energy material volume density and volume CT gray value was obtained through synchronized detection and VCT gray value calculating. Each specimens CT density was calculated from VCT gray value based on the whole specimens drainage density. The result showed that the self-comparison method could simplify the measuring local-density uniformity of energy material, and the relative error between drainage density and VCT density of each specimen was less than 0.1%.
中图分类号 TG115.28
所属栏目 试验研究
基金项目 中国工程物理研究院重大基金资助项目(2005Z0504); 学科发展基金资助项目(2007A03001)
收稿日期 2009/8/24
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备注杨雪海(1968-), 男, 高级工程师, 硕士, 从事CT应用研究。
引用该论文: YANG Xue-Hai,ZHANG Wei-Bin,DAI Bin,TIAN Yong. Self-Comparison Based X-Ray Computed Tomography for Measuring Narrow Densities of Energy Material[J]. Nondestructive Testing, 2010, 32(6): 431～433
杨雪海,张伟斌,戴 斌,田 勇. 含能材料密度的XCT自参照测试[J]. 无损检测, 2010, 32(6): 431～433
被引情况:
【1】倪培君,蔡和平,任安峰,张维国, "基于组分特性的材料密度工业X射线CT定量检测",无损检测 33, 5-10(2011)
【2】倪培君,蔡和平,张维国,郭智敏,郝丽萍, "非均匀结构件材料密度工业CT定量检测方法",无损检测 34, 11-15(2012)
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参考文献
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【6】ASTM E1935—1997(Reapproved 2003) Standard test method for calibrating and measuring CT density[S].
【2】杨文海, 何得昌, 徐军培, 等.γ射线工业CT技术在高能炸药密度检测中的应用[J].火炸药学报, 2001, 24(3): 33-34, 72.
【3】田勇, 李高强, 温茂萍.炸药柱径向局部密度的自对照射线透照法[J]. 无损检测, 1999, 21(5): 215-217.
【4】Hadden R J B. Radionuclides for process control and inspection[J]. Isotopenpraxis, 1987, 23(1): 1-12.
【5】Stokes J A, Alvar K R, Coray R L, et al. Some new application of collimated photon scattering for nondestructive examination[J]. Nucl Instrum Methods, 1982, 193(1/2): 261-267.
【6】ASTM E1935—1997(Reapproved 2003) Standard test method for calibrating and measuring CT density[S].
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