Which non-destructive testing (NDT) method is best suited for detecting subsurface cracks in a crane boom weldment?

For detecting subsurface cracks in a crane boom weldment, ultrasonic testing (UT) is generally considered the best-suited non-destructive testing (NDT) method. Weldments are structures made by joining metal parts through welding. Subsurface cracks are flaws that exist beneath the surface of the material and are not visible to the naked eye. Ultrasonic testing uses high-frequency sound waves to detect internal flaws in materials. A transducer emits ultrasonic waves that travel through the material. When the....