Businesseducation

İTÜ

FACULTY of MECHANICAL ENGINEERING

ENGINEERING MATERIALS MAK214E

HARDNESS TESTING

Ass. Prof. Celalettin ERGUN

Selahattin DOĞRAMACI

030020077

OBJECTIVE

To gain experience and understanding of the types, advantages and applications of various NDT methods.

INDTRODUCTION

Commonly used NDT techniques

|Technique |Capabilities |Limitations |

|Visual Inspection |Macroscopic surface flaws | |

| | |Small flaws are difficult to detect, no |

| | |subsurface flaws. |

|Microscopy |Small surface flaws | |

| | |Not applicable to large structures; no |

| | |subsurface flaws. |

|Radiography |Subsurface flaws | |

| | |Smallest defect detectable is 2% of the |

| | |thickness; radiation protection. |

|Dye penetrant |Surface flaws | |

|...