Fillet weld break test question

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JD1

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Discussion starter · #1 · Mar 6, 2017

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Since pressure is applied to the unwelded side, the weld will most times eventually break. Correct?

Is the point of that particular test to see how difficult it is to break it? Or is the point to see if it breaks at all and if it does you need to change something?

Is a break test just a quicker/easier way of testing than doing an acid etch or is it better in some manner?

 

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shovelon

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#2 · Mar 6, 2017 (Edited)

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JD1 said:

Since pressure is applied to the unwelded side, the weld will most times eventually break. Correct?

Is the point of that particular test to see how difficult it is to break it? Or is the point to see if it breaks at all and if it does you need to change something?

Is a break test just a quicker/easier way of testing than doing an acid etch or is it better in some manner?

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Alum weldments most probably break, and then the weld will be visually inspected for root penetration and porosity to qualify.

Steel weldments should not break if done properly. Bead throat should be same or thicker than the base plate, and the filler is increased in strength, so it should not break. Inspectors will fail broken bend test specimens and sometimes coach you in correcting the problem. Procedure qualifications may include etched macro samples at the engineer's direction. Be advised groove weld tests will approve fillets as well. Groove welds can go xray or plunge/wrap around bend tests or both.

 

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HT2-4956

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#3 · Mar 6, 2017

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shovelon

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#4 · Mar 6, 2017

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HT2-4956 said:

View attachment 1626301

View attachment 1626311

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I think I could pass that! :laugh:

 

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HT2-4956

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#5 · Mar 7, 2017

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shovelon said:

I think I could pass that! :laugh:

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Terry,

I've got no doubt you could pass the basic "fillet weld break test" on a whole lot of different materials with a range of different processes with out hardly even thinking about it.

 

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JD1

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Discussion starter · #6 · Mar 7, 2017

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Thanks for that welder qualification info. Quite helpful.