What are the factors to be considered for the choice of specific NDT methods?

What are the factors to be considered for the choice of specific NDT methods?

What are the factors affecting the choice of NDT method

  • Cost.
  • Type of defect sought.
  • Type of material to be tested.
  • Position and location of defect.
  • Availability of equipment.
  • Availability of qualified operators.
  • Working conditions and location.
  • Sensitivity required.

Which NDT method would you opt for finding out the cracks in the welding of plain carbon steels?

Tangential eddy current array (TECA™) is a blend of multiplexed tangential coils and pancake coils, specifically designed to detect surface-breaking cracks in carbon steel welds.

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Which method of non-destructive testing of welds should be used first and why?

Visual Inspection (VT) The visual inspection of welds is a method of non-destructive examination. It is the most commonly used of any non-destructive examination. Additionally, it is a first step in locating defects before any further NDT is undertaken. This is because the weld integrity is verified visually.

Which method do you think to be suitable for the quality inspection of welded joints Why?

Visual Inspection. This is often the easiest, least expensive, and most effective method of welding inspection for many applications if performed correctly. The welding inspector must be capable of identifying all of the different welding discontinuities during visual inspection.

Which NDT technique would be most suitable for detecting a fine surface crack on a small painted steel plate?

Magnetic particle inspection is generally the preferred NDT method for the detection of surface cracks in ferritic material.

Which technique is used for surface crack detection?

Liquid Penetrant Testing (PT) – This is probably the most common method of surface crack detection used.

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How do you decide the quality of welding?

The basic conditions of welding quality to achieve products of such high quality includes the following:

  1. No cracks or holes found in the bead.
  2. The bead has uniform waves, width and height.
  3. The finished product satisfies the design dimensions and has almost no distortion.
  4. The welding meets the required strength.