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讨论了利用水模试样和石墨试样标定CT检测过程中影响CT值的因素(系统噪声、产品尺寸、检测参数、摆放位置等)对CT值的影响,然后利用C/C复合材料试样建立CT值和材料密度的拟合曲线和拟合公式。结果表明系统噪声、产品尺寸、检测参数、摆放位置等对CT值的影响很小,C/C复合材料织物和复合物CT值和材料密度的拟合公式分别为P=(T+793)/659和P=(T+100)/860,说明利用CT值可以对C/C复合材料的密度进行定量定义。
The effects of CT factors (system noise, product size, test parameters, placement and so on) on the CT value of CT testing using water sample and graphite sample are discussed. Then the C / C composites test The establishment of CT value and material density fitting curve and fitting formula. The results show that the influence of system noise, product size, test parameters and placement on CT value is very small. The fitting formulas of CT value and material density of C / C composite fabric and composite are P = (T + 793) / 659 and P = (T + 100) / 860, indicating that the C / C composite density can be quantitatively defined using CT values.