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| Study on maximum allowable tube voltage for
AZ ceramic X-ray digital radiography |
| ZHU Guifeng,ZHENG Ziqin,JIAO Zhongbin,LIANG Jingheng,LI Shuai,WANG Yan |
| No.52 Institute of China North Industries Group Yantai Branch Co., Ltd., Yantai 264003, China |
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| Guide |
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Abstract Digital radiography (DR) detection technology was used to detect the AZ ceramic pieces (toughening of Al2O3 by ZrO2) with thickness of 6, 8, 10, 12 mm, respectively. The maximum allowable tube voltage was studied by analyzing the indexes including image resolution ratio, sensitivity, and normalized signal to noise ratio. The results showed that when the exposure requirement was not less than 0.5 mA·s, the maximum allowable tube voltage of 6, 8, 10 and 12 mm-thickness AZ ceramic by DR detection was 80, 95, 105 and 115 kV, respectively. For the digital array detector, the increase of signal to noise ratio caused by the increase of tube voltage had a greater influence on the sensitivity than the decrease of contrast. Under the premise that the tube voltage could penetrate the workpiece, the detection sensitivity would not change significantly with the increase of tube voltage. When the tube voltage was below 190 kV and the normalized signal to noise ratio was greater than 120, the image quality meeting the B-level detection technology of GB/T 35388—2017 standard could be obtained.
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Received: 09 June 2021
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2022, Vol. 40 
