The defect detection methods of aviation forgings mainly include the following: Visual inspection: by observing the surface of the forgings with the naked eye, check whether there are visible defects, such as cracks, inclusions, pores and so on. Penetration testing: Penetration testing is a commonly used surface defect detection method by applying an penetrant containing a fluorescent substance, letting it dip into cracks or holes on the surface of the forging, and then using a developer to make it appear. Ultrasonic testing: Ultrasonic testing is a non-destructive testing method that uses the propagation characteristics of ultrasonic waves between different media to detect internal defects in forgings, such as pores, inclusions, cracks, etc. X-ray inspection: X-ray inspection is a commonly used method of in vivo defect detection, by irradiating the forgings, and recording the intensity change of X-ray transmission and scattering to determine whether there are internal defects in the forgings. Magnetic powder detection: Magnetic powder detection is a method to detect cracks on the surface and near the surface of the forging, which is covered with magnetic particles on the surface of the forging, and the magnetic field distribution and the magnetic field anomaly on the defect surface are used to find cracks. Thermal infrared detection: Thermal infrared detection is a method of detecting defects by measuring the infrared radiation heat map of the surface of an object, which can be achieved with a thermal infrared camera. The above are some commonly used defect detection methods for aviation forgings, and the specific choice of which method needs to be comprehensively considered according to factors such as forging material, shape, size and defect type.
