Tham khảo tài liệu 'steel structure design part 8', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | ẹ Magnetic equipment is used to magnetized the particles isffiwa ŨDŨÍK TRagQ Inspection is carried out using a radiation source and radiographic film Area of interest is located between the radiation source and radioactive film Radioactive film is exposed by radiation passing through the area of interest and image can be viewed on developed film Where the weld metal is thinner or has a cavity in it more radiation gets to the film and a darker image is produced Highly recommended for butt weld Can detect internal and surface .
