Other Related JIS Standards: Besides the ultrasonic flaw - detection standard, JIS also has some standards related to material performance testing. These standards can be combined with ultrasonic testing. For example, JIS standards include standards for tensile testing and impact testing of iron and steel materials. By combining the results of ultrasonic testing with the results of these material mechanical property tests, the applicability and safety of ship - plate steel in the ship structure can be more comprehensively evaluated. This comprehensive evaluation method helps to more accurately determine whether there are potential safety hazards in the ship structure.

 

 

 

AWS Standards (American Welding Society Standards)

AWS D1.1 - 2020 (Structural Welding Code - Steel): In the ship structure, the welding part is a crucial link, and ultrasonic testing is often used to detect welding quality. The content of the ultrasonic testing part in the AWS D1.1 - 2020 standard is very important. It stipulates the specific steps for ultrasonic testing of welded joints, including the placement position of the probe, the scanning speed, and how to judge welding defects (such as cracks, slag inclusions, etc.) according to the ultrasonic reflection signal. These regulations can help the inspection personnel more accurately detect the defects in the welded parts, ensuring the welding quality of the ship structure, because the welding quality is directly related to the strength and safety of the entire ship structure.

Standard Content Combined with Welding Procedure Qualification: The AWS standards also involve the content of combining welding procedure qualification with ultrasonic testing. Through ultrasonic testing of welded joints under different welding procedures, the relationship between welding procedures and welding quality is established. In the ship - building process, this combination can help optimize the welding procedure, and at the same time, use ultrasonic testing to monitor the welding quality, ensuring the reliability of the welded part in the ship structure, and thus ensuring the safety of the ship structure.

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