Fillet weld by UT

This is a mature discipline, and there are specialist companies that do this as their business. Call one in and pay their fees.

If you have the volume, buy the correct machine for the job.

http://www.google.ca/search?hl=en&q=welding+ultrasonic+testing&meta=&aq=0&oq=welding+%2B%22ultr

Hi Arun, send more information about the configuration of the joint and the thickness that you have, some times is not possible to use UT for fillet welds. ( Plate to plate? Sockets?, slip on? Regards ADOLFO

Base metal 30mm thick, In that we need to weld 12mm thick plate verticallyto hold a hudraulic cylinder O/D 280mm.

Cylinder to basemetal weld is full penetration weld.that we can do UT. The supporting gussets are fillet weld(12mm thick plates)with cylinder and base plate 30mm thick.sufficient space is there for conduct angle beam insspection with 70 degree probe.(upto full skip)

Regards

Arun

Why would a non-penetration weld require UT?

there is a failure in the joint

Regards

arun

IVE NEVER HEARD OF A FILLET WELD GETTING A UT USUALLY IT ONLY GETS A VISUAL INSPECTION BY THE CWI(CERTIFIED WELD INSPECTOR)

it is not impossible.you can check U.T. only full penetration butter weld

This can be done. What must be used depends on the size of the weld and the thickness of the materials it is joining. Other considerations would be back-side accessibility of the joined pieces, whether the weld is single sided or double sided, what you are willing to pay for transducers, and the defect calibration standard you will need to manufacture.

Last is the most important consideration, the ability of the individual performing the inspection.

I'll be more specific in my reply if you can provide specifics about your application.

thank you very much for your reply

Base metal 30mm thick, In that we need to weld 12mm thick plate vertically to hold a hudraulic cylinder O/D 280mm

Cylinder to basemetal weld is full penetration weld.that we can do UT. The supporting gussets are fillet weld(12mm thick plates)with cylinder and base plate 30mm thick.sufficient space is there for conduct angle beam inspection with 70 degree probe.(upto full skip)

For my knowledge one more thing i wanted to know even this is not possible,

A) How to carry out a ordinary FIllet joint test specimen (for WPS using plates 30mm,12mm thick, sizes 300x150

B) A fillet weld can be examined for its penetration depth by UT?

Regards

Arun

Arun,

Depth of penetration can only be approximated using straight beam from side opposite weld due to beam spread,which is determined by transducer frequency and diameter. The other limitations are in detectability which are functions of transducer frequency and surface roughness on either side of the plate, with inclusionary matter thrown in to keep it interesting.

I would not use 70 degree (surface wave) transducers for weld inspection unless you feel compelled to measure undercut with ultra sound. Better choices would be 45 degree and / or 60 degree, industry standards.

Test coupons of your description are common for bend and impact testing of fillets. The welded "Tee" coupon is usually sectioned into "Tees" of 25mm or less for destructive testing and acid etching for profile evaluation. From the leftover piece of this coupon is what you make your test standard from.

thank you very much Jerry. If i am not disturbing you, please reply!.

I am using 70 Degree probe for checking 12mm j groove joint.Is there any chance of false indications. Usually i see reaveled defects. Rarely can't. False indication may lead to show at what depth? generally it shows near to the surface isn't it?

Regards

Arun

it is better to use MPI or LPI for checking a fillet weld,since UT may give erroneous results.

siva

I would suggest shear wave UTT for your fillet weld.