The main flaw detection methods are MT magnetic particle flaw detection UT ultrasonic flaw detection RT ray flaw detection PT penetrant flaw detection ET eddy current flaw detection, and others are TOFD, phased array, acoustic emission and metallography. Generally, the first five flaw detection methods are the mainstream flaw detection methods, which are used in large quantities and suitable for primary learning.

Among the five basic flaw detection methods, UT RT is slightly more difficult, MT PT is slightly less difficult, and ET dosage is small, so few people have mastered it.

There will be an exam after the flaw detection training, and the general training will add 30 days (including weekend rest). For engineering students, or those who have some field work experience, as long as they listen attentively and study hard, they can pass the exam.

There are many institutions that handle training and issue certificates. If you want to learn, you should first know which industry you intend to do and where to find a job (many units need flaw detection training in local related industries), and generally look for pressure vessel special equipment association, shipyard classification society, foreign-funded enterprises to find foreign training institutions (English lectures, English papers), and so on. On the one hand, the certificate is valid, on the other hand, you can make friends with all kinds of students in the training, and maybe there will be introductions.