Stringers vs Weaves

#welddotcom
How to win friends and influence welders... Compare stringers vs weaves...
Today's episode will likely cause some unruly comments, but we are testing the tensile strength and toughness of stringer beads versus weaves on a 3/4" test plate. The team up at Select Arc is going to help us by doing a tensile pull, as well as a charpy v notch test. Let us know how you feel about the results below!

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[StreetBikeTakeoverYT]

Weaves look better but damn now we have some actual evidence that stringers are stronger... Great video thanks for taking the time to do all this testing I’m sure everyone appreciates it 🙏

[mikewolstenholme]

This popped on YouTube today. The main reason that stringers are stronger is because each stringer normalizes the previous bead. This means that the grain structure within each bead becomes small roundish grains. Forming a tight chain. Weaving tends to give a jagged structure called columnar crystals. There is also less chance of the formation of hydrogen pockets, which can lead to hydrogen induced cracking. The test used on oil platforms in cold environments like those in the North Sea is COTD (Crack Tip Open Displacement). This is where a small notch to simulate a crack is put into a material. The material is cyclic loaded like bending a can back and forth. This is done to replicate wave motion. After a number of days, the specimen is measured to see how far the crack has run and also to see how much it has opened. The tighter the grain, the better are the results. Sorry if too technical. Love the videos by the way, keep them coming.

[sniperdoug]

I’m just happy when I can get a arc established and make a straight line.

[LawF]

That's why my welding instructor, which was formerly an aerospace welder, said there's no place for that fancy looking shit and just weld straight.

[dhirmer]

As a CWI I love seeing someone do a legit test like this. I hear from so many welders that "there's no difference" and this is a great video to show them

[MLFranklin]

I'm a hobbiest welder but also an engineer so I'm really geeking out on this data. This is super educational and well done. I was a fan of weaving with my little MIG until today. You changed my thinking. Will add this to my playlists and add it to my personal favorites list as well.

[freezerburn]

making mistakes with greg sent me here and i can see why he respects your efforts. Thanks a ton. freezer'

[Hours-zijs]

Weaving for superficial looks, stringers for core tensile strength. Great video. 👍

[JohnLothe]

Stringers = Stronger Weaves = Weaker the first letters are the same so its easier to remember.

[GeorgesDPrinters]

Pass 4 labeled weave when pass was stringer. then weave was labeled as a stringer.
But I absolutely love the welding, the cross section, the testing, everything was friggin amazing.

[bobbobbington]

ME in training here. We covered this type of testing last semester in my materials course. Very interesting to see practical applications for it. One thing that a super rigorous experimenter might do to further reinforce the results would be to run the tests on several sets of samples, all welded by different people, just to make sure that any individual technique variation would be averaged out. Cool video!

[worxharder]

Jokes on you, I was pissed off before I clicked on this video.

[AlphaBobFloridaOverlord]

Best part was when you switched hands to level up the weld - I've never seen that before and I learned something new! Thanks!

[pellyrat]

Thank You, There aren't enough video's about the higher end welding applications. We don't have a lab where I work, so we send off samples to be tested for WPS docs. So this is a great learning tool. One of the larger companies recently added a requirement that on every WPS ( welding procedure specification ) must state that no bead be larger than 3 rods wide. If your using 1/8" that means that the single stringer bead can be no wider than 3/8". Thanks again.

[markharris]

I’m officially the world’s newest newbie welder and I didn’t even know there was an age old argument... I still found the video absolutely mesmerising. Well done, more suspense than most TV dramas, thank you.

[viscache]

This was a great reminder. I’m about to weld up four 40’ tall wind generation towers that ‘break’ at the base to lay over for repairs. The spec is for 16 tonnes dynamic load. I’m going to be making up several of this type of joint and am glad for the reminder. I’m a farmer and not a welder by trade so these videos are real life savers!

[spkrman]

Wow. That was amazing. Thanks for sharing. Next up. Rod vs wire.

[Nichabod_Crane]

I am a quality technician at an aluminum extrusion plant doing a lot of tensile test every day. I was totally geeking out during your test segment. Thank you for including that! Very interesting and fascinating

[shaunofthedead]

Worked as a metallurgist apprentice for while doing similar tests at a welding R & D company...I thought everyone knew the weaves were all look...

BTW...your buddies at that lab have some nice toys.

We focused alot on gas mixes. So fully controlled heat input and ambient. Fully controlled weld instruments and weld metals, fluxes and/or gasses. The weld samples were even prepped at specific sizes.

The welder would run root to cap at specs in a tent and the sample was immediately placed in liquid nitrogen. From there a certain amount went into a gas analyzer, some we'd put in epoxy which would freeze the gasses escaping from the weld, and of course we'd use some for the tests conducted in this video, including the acid etching.

People love the epoxy. The visual effect of seeing the escaping gas helps even the old welders put something they've been told their whole career exists into reality.

Fun stuff. The welding and the testing.

[kenbrownlee]

GREAT TOPIC FOR THE WELD JUNKIES! LETS FIX THIS AGE OLD DEBATE!😁