NDE for fillet weld
NDE for fillet weld
(OP)
Base metals: 10" thick A36 bearing Plate with 6" A36 plate (part of box column). weld size 1/2" done using SMAW with E7018. 225F preheat was applied but only 3" depth into the metal not the the whole 10" from point of welding. Also was not maintained during welding. I want to check the whole weld not just the surface. any suggestions/ NDE method work best.





RE: NDE for fillet weld
RE: NDE for fillet weld
RE: NDE for fillet weld
a) Inclusions
b) To define the HAZ boundary
c) Cracking
d) ??
A combo of UT and MP can be done or RT if available but UT/MP is faster cheaper safer
RE: NDE for fillet weld
RE: NDE for fillet weld
Best regards - Al
RE: NDE for fillet weld
Is this for your info only...or? What code is this and what does your WPS say about pre-heat?
RE: NDE for fillet weld
Fluorescent magnetic particle testing must be conducted in a darkened area to permit the inspector to see the fluorescent magnetic particles glow when stimulated by black light (ultraviolet light with a wavelength of 365 nanometers). This test method is very sensitive to very small cracks that are typically not detected with dry contrast magnetic particles. While working in a darkened environment can be a detraction, the effort is worthwhile. I use this technique on a regular basis to detect small fatigue cracks long before they can be detected with dry MY. A tarp may be all that is needed to provide a darkened work space to conduct the actual test.
Best regards - Al
RE: NDE for fillet weld
RE: NDE for fillet weld
If one is looking for overlap, incomplete fusion, or other surface breaking linear discontinuities, dry contrast magnetic particles work well.
In this case, small hydrogen cracks are the most likely discontinuity that would result if hydrogen cracking is suspected. Wet fluorescent magnetic particles is the way to go if one is interested in detecting small hydrogen cracks that have not had an opportunity or time to propagate into large cracks.
Best regards - Al
RE: NDE for fillet weld
RE: NDE for fillet weld
RE: NDE for fillet weld
RE: NDE for fillet weld
Best regards - Al
RE: NDE for fillet weld