船舶建造焊缝缺陷DRT与常规胶片RT的等效性分析

针对船舶建造中的平对接焊缝,采用不同厚度钢材料母材,分别进行数字射线检测(Digital Radiography Testing, DRT)和常规胶片射线检测(Radiography Testing, RT)的检测技术标准等效性要求对比和检测等效性试验,并对试板焊缝缺陷的DRT和常规胶片RT进行评定。结果表明,DRT与常规胶片RT具有等效性。     

DRT技术在压力管道焊缝不停产检测中的应用

分析数字射线成像检测(Digital Radiography Testing, DRT)技术的基本原理与技术优势,介绍DRT技术在压力管道焊缝不停产检测中的应用实例。与常规射线检测(Radiography Testing, RT)技术相比,DRT技术可对焊接材料的内部质量进行更直观清晰的检测,促进焊缝检测结果更加精确,有助于压力管道的安全运行。     

Efficacy of bus service reorganization utilizing a hub-and-spoke topology and DRT to meet community needs: A case study of Tokigawa town

The purpose of this study is to verify the efficacy of a route/timetable reorganization methodology focused on a hub-and-spoke schedule bus architecture as well as the introduction of demand responsive transport (DRT) in suburban or underpopulated areas in Japan to accommodate local requirements.