Comparison of NDT
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Industrial Inspection & Training Services (IITS) House 162, Road 01 (old 11), DOHS Mirpur, Dhaka Cantonment, Dhaka-1216 Cell: 0088-01913303031, Web: www.iitsbd.com , email: [email protected] Nondestructive Testing (NDT) and inspection techniques for detecting and evaluating flaws (irregularities or discontinuities) or leaks in engineering systems are reviewed in this document. Of many different NDT techniques, liquid penetrant and account for about for about half of all nondestructive tests. Ultrasonic and x-ray methods account for about another third, eddy current testing about 10% and all other methods for only about 2%. The following table is a simplified breakdown of the complexity and relative requirements of the five most common NDT methods. Considerations Test Method Ultrasonic Testing (UT) Magnetic Particle Testing (MPT) Time of result Immediate Short Delay Effect of geometry Important Not so important Access problem Important Important Type of defect Internal Surface & Sub surface Operator Skill High Medium Operator Training Important Important Training needs High Medium Portability of equipment High High to medium Dependent on material composition Very Magnetic only
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NDT method comparison by IITS
Transcript of Comparison of NDT
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Industrial Inspection & Training Services (IITS)
House 162, Road 01 (old 11), DOHS Mirpur, Dhaka Cantonment, Dhaka-1216 Cell: 0088-01913303031, Web: www.iitsbd.com, email: [email protected]
Nondestructive Testing (NDT) and inspection techniques for detecting and evaluating flaws
(irregularities or discontinuities) or leaks in engineering systems are reviewed in this document.
Of many different NDT techniques, liquid penetrant and account for about for about half of all
nondestructive tests. Ultrasonic and x-ray methods account for about another third, eddy current
testing about 10% and all other methods for only about 2%. The following table is a simplified
breakdown of the complexity and relative requirements of the five most common NDT methods.
Considerations Test Method
Ultrasonic Testing (UT) Magnetic Particle Testing (MPT) Time of result Immediate Short Delay
Effect of geometry Important Not so important Access problem Important Important Type of defect Internal Surface & Sub surface Operator Skill High Medium
Operator Training Important Important Training needs High Medium
Portability of equipment High High to medium Dependent on material composition Very Magnetic only
