ISO Standards

 

ISO 11666 Standard: The ISO 11666 standard issued by the International Organization for Standardization (ISO) regulates the ultrasonic inspection of steel structures in shipbuilding and marine technology. This standard specifies in detail the calibration of ultrasonic testing equipment, testing procedures, and result evaluation. For example, in terms of equipment calibration, it clarifies the calibration methods and cycles of ultrasonic testing instruments and probes to ensure the accuracy and reliability of the equipment. In the testing procedure section, it covers details from the preparatory work before testing, such as the requirements for the surface to be tested, to the scanning methods, speed, and the use of coupling agents during the testing process. For result evaluation, ISO 11666 provides guidelines for judging the types and degrees of defects based on the characteristics of ultrasonic signals, which helps to unify the operation procedures and quality standards of ultrasonic testing of ship structures worldwide.

 

Other Related ISO Standards: Besides ISO 11666, ISO also has some standards related to the fundamentals of non - destructive testing of materials that can influence ultrasonic testing methods. For example, the ISO 9712 standard stipulates the qualification and certification requirements for non - destructive testing personnel. Because the accuracy of ultrasonic testing largely depends on the professional skills and experience of testing personnel, this standard plays a crucial role in ensuring the quality of personnel for ultrasonic testing of ship structures. Only personnel with qualified certifications can accurately conduct ultrasonic testing operations according to the standard requirements, thereby increasing the credibility of testing results.

 

 

 

 

 

 

 

 

 

 

 

 

 

Thickness	1.5-100mm
Width	600mm to 1500mm
Length	1000mm to 6000mm

 

ASTM Standards (American Society for Testing and Materials Standards)

 

General Standards for Ultrasonic Testing of Materials: ASTM has a series of general standards for ultrasonic testing of materials. For example, the ASTM E164 - 13 standard mainly involves the standard operating procedures for the contact ultrasonic pulse - echo testing method. Although this standard is general, it also has a certain reference value in the ultrasonic testing of ship structures. It describes in detail the characteristic requirements of ultrasonic testing equipment, the calibration steps of the testing system, and the selection principles of probes. These basic testing principles and methods can help the inspection personnel of ship structures better understand and apply ultrasonic testing technology and ensure the scientific and accurate testing process.

 

Standards Specific to Metallic Materials: For ship - plate steel as a metallic material, ASTM also has some more targeted standards. For example, the ASTM A388/A388M - 14 standard stipulates the ultrasonic testing methods for large - scale steel forgings, including the content of internal defect detection and quality classification. Ship - plate steel may have internal defects similar to those of large - scale steel forgings during the manufacturing process. The detection methods and quality classification concepts in these standards can provide a reference for ultrasonic testing in the safety assessment of ship structures and help the inspection personnel judge whether the internal defects of ship - plate steel meet the quality requirements.

 

 

 

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