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数字式超声波探伤仪扫描基线校准与横波斜探头K值测试方法
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作者 王计宝 《无损探伤》 2015年第3期36-37,共2页
通过对数字式超声波探伤仪扫描基线校准的目的、校准的方法及K值测试方法的分析,对目前使用的多种型号数字式超声波探伤仪扫描基线校准与横波斜探头K值测试方法进行了比较分析。
关键词 扫描基线校准 K值 K值测试
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Calibration of grayscale values of cement constituents using industrial X-ray tomography
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作者 WAN KeShu CHEN LingYan XU Qiong 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2015年第3期485-492,共8页
X-ray computer tomography(CT)has been intensively applied to the research of cement-based materials,while most of the CT applications are qualitative.To have more quantitative applications,the arbitrary grayscale valu... X-ray computer tomography(CT)has been intensively applied to the research of cement-based materials,while most of the CT applications are qualitative.To have more quantitative applications,the arbitrary grayscale values and the specially defined CT numbers of the main cement constituents,including the cement clinkers,the hydrated products,and some durability products are calibrated on an industrial CT system in this study.The calibration results can deepen our understandings of the X-ray CT image of the cement-based materials.The universalities of the calibrated results and the calibration procedures are clarified.The potential applications are anticipated,such as segmentation of the individual phases,quantitative durability research,porosity determinations,and quantitative composition characterizations. 展开更多
关键词 computer tomography CEMENT CALIBRATION
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