X射线平均衰减系数的测量—2505型射线机

北京理工大学珠海学院2020届本科生毕业论文Measurement of average attenuation coefficient of X-ray -2505 typeX-ray machineAbstractRadiographic testing is one of the five conventional testing methods in the field ofnondestructive testing.The attenuation coefficient is an important parameter representing theability of ray penetration and an important reference for radiographic testing and rayprotection.After reading the relevant literature,we know that there is a certain relationshipbetween the attenuation coefficient of polychromatic rays and the tube voltage.In this paper,by making the X-ray exposure curve,using Python software to take out the correlationfunction of the two coefficients of the tube voltage and the exposure curve,we indirectly findout the relationship function between the average attenuation coefficient and the tube voltage.Keywords:radiography testing;X-ray;exposure curve;attenuation coefficient;tube voltage