GB/T 35839-2018 Translated English of Chinese Standard. (GBT 35839-2018, GB/T35839-2018, GBT35839-2018): Non-destructive testing - Test method for measuring industrial computed tomography (CT) densityhttps://www.chinesestandard.net, 2014. 4. 20. - 17페이지 This Standard specifies the methods to use industrial computed tomography (CT) to measure the density of objects. This Standard is applicable to industrial CT systems, of which the energy range is 200keV ~ 10 MeV, and which perform density-measurement of common metal and non-metallic materials. |
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Appendix artifacts average CT density average CT number calculate the linear calculation method Chongqing circular area comparison test specimen computed tomography CT CT density measurement CT image cubic centimeter density calibration density comparison test density range density reference sample density resolution density standard sample density test specimen density value detector diameter different energies entire standard sample equipment model equivalent energy functional relation GB/T industrial computed tomography industrial CT density industrial CT equipment Industrial CT systems least squares less than 100 linear attenuation coefficient mass attenuation coefficient material density measured workpiece measurement range millimeters Non-destructive testing number of pixels Obtain the average perform density measurement perform the density polynomial fit ray source reconstruction matrix reconstruction parameters sample image area scanning parameters signal-to-noise ratio spatial resolution specified area standard sample image Test method Test record tested workpiece to-be-test area to-be-test object to-be-test sample to-be-test substance to-be-test workpiece workpiece name