For detection of surface weld defects or discontinuities what are the NDT methods commonly used?

Liquid penetrant testing (LPT) and Magnetic particle testing (MT)

Visual Test

Liquid Penatrant Test

Magnetic particle Test

1 Magnetic particle testing (MT)

2 Liquid penetrant testing (LPT)

3 Visual Inspection (VT)

4 Electro Magnetig Inspection ( EMI )

Liquid Penetrant Testing for non ferrous material and Magnetic Particle Testing for ferrous material

1 Magnetic particle testing (MT)

2 Liquid penetrant testing (LPT)

3 Visual Inspection (VT)

Liquid Penetrant for non ferrous and Magnetic Particle test method for Ferrous Materials are commonly used.

The following can be used to find the defects:

• penetrant testing
• magnetic particle testing
• visual inspection

1-visual inspection (VT)

2-liquid penetrant testing (PT)

3-magnetic particle testing (MT)

NDT methods for detection of surface weld defects are visual inspection (VT), liquid penetrant testing (LPT) and magnetic particle testing (MT)

One of the major factors influencing method selection is the type of defects sought.

Commonly used NDT methods for detection of surface weld defects are visual inspection (VT), liquid penetrant testing (LPT) and magnetic particle testing (MT) which covers majority of the common defects

Advanced Ultrasonic testing and radiographic testing are also reliable NDT methods for detection of surface weld defects.

Visual, Liquid Penetrant Test,  Magnetic Particle Test