基于数字射线检测的船舶焊缝无损检测应用

以数字射线（Digital Radiography，DR）检测与常规射线检测为对象，研究在船舶建造过程中使用DR检测部分替代常规射线检测的可行性和实用性。采用板对接试件和管对接试件进行试验，对比DR检测与常规射线检测的特点、优势、不足和成本，发现船舶建造过程中的较多检测场景均契合DR检测要求，DR检测优势较好地得到发挥，确定可使用DR检测在船舶建造内场作业的拼板焊缝检测和管系焊缝检测中替代常规射线检测。

Application of Ship Weld Non-Destructive Testing Based on Digital Radiography Testing

Taken the Digital Radiography (DR) testing and the conventional radiography testing as objects, the feasibility and practicality of using the DR testing to partially replace the conventional radiography testing during the ship construction are studied. The plate butt specimen and the pipe butt specimen are tested, and the characteristics, advantages, disadvantages, and costs of DR testing and conventional radiography testing are compared. It is found that more testing scenes during the ship construction meet the DR testing requirements, and the DR testing advantages are better played, which determines that the DR testing can be used instead of the conventional radiography testing in the splice plate weld testing and piping weld testing for infield operations of ship construction.