Micro Metal Core Wheels Zu Verkaufen What Is The Difference Between Ultrasound And Dye Penetrant Tests For Metal?

What is the difference between ultrasound and dye penetrant tests for metal? - micro metal core wheels zu verkaufen

I understand that both techniques can be used to detect the failure (surface micro-) cracks in the metal, as in nuts, or any other type of rotating machinery. Which method is a) more sensitive to pick up microscopic cracks to buy 2) initially to less expensive devices, and perform regularly, and 3) easier to implement (the people in the train, etc.)

Thank you.