Wow! Ryan that is a great video - two people talking about corrosion in steel - what could be more exciting? I worked with steel thoughout my working life in engineering but never had any inkling about the corrosion processes that Parks Stephenson was talking about and his knowledge of what is happening to Titanic was an eye opener. A very impressive man. Keep up the good work.
Once crazy thing when talking about repair and steel is that the source and quality of the steel used in the repair is very important for the long term compatibility Just like the zink-steel reaction, you can have steel-steel electrolysis where the "lower quality" steel sacrifices itself. I've seen filler work on cars that just absolutely rots away, but just past the heat zone of the weld that put it there, the base metal looks practically new. I could see the same thing happen on a theater repair. 80 years later and either the base metal or the patch is going to be struggling and that heat zone in the middle is going to be having a really rough time
Yes agree intergranular corrosion but I woud add the discussion revolved around damage. If there is a dent, the material has not returned to to a zero stress state. A residual tensile stress (usually about 25% of the yield stress) along with galvanic activity and damage of the corrosion protection system all contribute to corrosive damage. Welding can also set up adverse residuals. Peening, annealing and cold working can help to mitigate.
Given what was said here on the rust problem then it would be interesting to learn about the problem with rust that USS Laffey considering how much damage she suffered and was repaired from
The harder the steel, the faster it rusts. Work hardening by bending or rolling increases surface hardness much like thermal processing. Also why rocker panels in cars and trucks rust so quickly unless galvanized. A ship on fire gets quenched in cold water much like a blank in a heat treating shop.
The only part that doesn't dry out entirely is the part that occasionally gets buried in the mud. Being able to walk underneath the ship is one of the main reasons I tell people to visit the ship as it really helps put into perspective how large the ship actually is despite being a "small" ship by modern Naval standards.
I saw an interview with Ballard and he complained that one of the for-profit expeditions to the wreck had caused the damage. I don’t know what the legal consequences of talking about that here would be.
I saw an interview where Ballard complained that one of the non Woods Hole expeditions damaged the wreck. He didn’t go into detail of whether it was a collision or if they caused damage trying to get inside the wreck. I suspected it was the expedition which borough up the safe, and they made a big TV production only to have it found out they already had the back open and knew there was not much of interest inside.
Parks works with a lot of documentaries that demand NDAs until the program actually airs. Perhaps he’s been consulted for a new Titanic documentary . . .
North west would be near Toledo. There are two museum ships in Toledo: the Col. James M. Schoonmaker Museum Ship and the Museum Tug Ohio. They aren’t US Navy ships, but I am sure they would be appreciative of anyone who can volunteer, especially someone with fabrication skill. I know someone who worked the radio for a special event on USS Cod and from his description, Cod sounds like a really neat museum. I would like to visit both Cod and New Jersey.
@@wtmayhew Cod is FANTASTIC. Arguably the best WWII submarine museum if we are being honest. She hasn't had any holes cut in her, she's the most complete. She still runs (although she doesn't have her screws anymore, she's not allowed to because she's on the lake)
It always amazes me that they put a single rudder for a twin screw ship. Sure, its cheaper, but you want these ships in particular to be handy... One rudder between two screws does not help a ship be handy.
where's the electrolysis? kind of have to disagree with what this guy is saying. denting the steel isnt doing much metallurgically, however when bending/twisting/denting steel you cause microscopic cracks in the face of the steel, which gives a place for corrosion to get a foot hold if its not painted over, or sealed. corrosion from fire likewise has burnt off the paint, and left behind ash, which leaves the metal unprotected.
Plastic deformation leads to work hardening, which is a change in the lattice structure of the steel. You are introducing more dislocations in the lattice. But I don't see what that has to do with anything.
I'm certainly no expert but I have seen vids about boats in marinas experincing electrolysis damage because of shore power not being connected right to all the boats. Not sure if it was a shore power fault or improper boat electrical. Seemed like it ate up the zink quickly then what the zink was supposed to protect. Yup, quick search on Y.T. brought up lots of vids & evidence, check it out. I think that is more likely the corrosion problem here instead of a tugboat dent. USS Kidd is always on shore power 24-7. Thanks for video.
@@garywayne6083 Thanks, Didn't know it was available yet. Stray electricity, I just wasn't buying the tug boat dents. But I bet dents and repairs could affect where electrolysis corrosion shows up.
Wow! Ryan that is a great video - two people talking about corrosion in steel - what could be more exciting? I worked with steel thoughout my working life in engineering but never had any inkling about the corrosion processes that Parks Stephenson was talking about and his knowledge of what is happening to Titanic was an eye opener. A very impressive man. Keep up the good work.
Interesting the guy knows his stuff
"Stress corrosion cracking" over on Wikipedia is worth a read.
Good to know if the navy ever gives me a museum ship.
Navy doesn't want you to know this but museum ships are free. I vgot 56 museum ships.
inter granular stress corrosion
That's a bingo.
Did you serve on board a ship or work in a shipyard or just into metallurgy?
Now you're bring up unpleasant memories of Navy nuclear power school.
Once crazy thing when talking about repair and steel is that the source and quality of the steel used in the repair is very important for the long term compatibility
Just like the zink-steel reaction, you can have steel-steel electrolysis where the "lower quality" steel sacrifices itself. I've seen filler work on cars that just absolutely rots away, but just past the heat zone of the weld that put it there, the base metal looks practically new. I could see the same thing happen on a theater repair. 80 years later and either the base metal or the patch is going to be struggling and that heat zone in the middle is going to be having a really rough time
Great video
I can’t help but think of a drag racing boat when I see pictures of the Kidd. It’s ate up with prop.
Yes agree intergranular corrosion but I woud add the discussion revolved around damage. If there is a dent, the material has not returned to to a zero stress state. A residual tensile stress (usually about 25% of the yield stress) along with galvanic activity and damage of the corrosion protection system all contribute to corrosive damage. Welding can also set up adverse residuals. Peening, annealing and cold working can help to mitigate.
I was staring at the rudder the whole video! You really have to watch out for those enemy termites wearing naval uniforms!!!
Given what was said here on the rust problem then it would be interesting to learn about the problem with rust that USS Laffey considering how much damage she suffered and was repaired from
"Ship down! We need more zinc!"
Interesting.
Ok, now I want to know about the rudder, lol
The harder the steel, the faster it rusts. Work hardening by bending or rolling increases surface hardness much like thermal processing. Also why rocker panels in cars and trucks rust so quickly unless galvanized. A ship on fire gets quenched in cold water much like a blank in a heat treating shop.
Recalling Ryan's drydock videos, it occurs to me that, due to the seasonal water level change, almost all of USS KIDD is in the wind zone.
The only part that doesn't dry out entirely is the part that occasionally gets buried in the mud. Being able to walk underneath the ship is one of the main reasons I tell people to visit the ship as it really helps put into perspective how large the ship actually is despite being a "small" ship by modern Naval standards.
GREAT KIDD VIDEO,,.. 3:30 .. BUT YOU DIDNT WANT TO TALK ABOUT THE TITANIC'S RAIL THAT FELL ,, BY LAW IS IT THAT A SUB MIGHT OF HIT THE RAIL???
I saw an interview with Ballard and he complained that one of the for-profit expeditions to the wreck had caused the damage. I don’t know what the legal consequences of talking about that here would be.
Above is correct. But probably doesn't want to comment on it and potentially get involved with current or upcoming litigation.
@@wtmayhew THANK YOU FOR YOUR FEED BACK,, I HAD THAT SAME IDEA..
@@chrislongbeard THANK YOU FOR YOUR COMMENT ALSO..
@@ronaldmiller2740 Thanks for the reply, appreciated.
It would be stress put in the steel as it gets deformed. Plus microcracks initiating cracks and exposing internal surfaces in the steel to rust…
Hey, how of often does the 5in gun fire each day? :)
If I had a ship that had corrosion issues, a guy with experience on Titanic would be at the top of the list of experts I’d want to have lol
Can’t talk about the bow on the titanic collapsing because of legal reasons? 🤔 This guy is at fault for the titanic sinking?! I knew it! 😮
I saw an interview where Ballard complained that one of the non Woods Hole expeditions damaged the wreck. He didn’t go into detail of whether it was a collision or if they caused damage trying to get inside the wreck. I suspected it was the expedition which borough up the safe, and they made a big TV production only to have it found out they already had the back open and knew there was not much of interest inside.
Parks works with a lot of documentaries that demand NDAs until the program actually airs. Perhaps he’s been consulted for a new Titanic documentary . . .
Man, what a bass boat!
cool
I'm in Ohio, not even close to any museum ships for this Fab guy to volunteer too.
I regret to report there is USS Cod a submarine in Cleveland.
@ well I’m as far Northwest as one can get. Cod would be more than Two hours away.
North west would be near Toledo. There are two museum ships in Toledo: the Col. James M. Schoonmaker Museum Ship and the Museum Tug Ohio. They aren’t US Navy ships, but I am sure they would be appreciative of anyone who can volunteer, especially someone with fabrication skill.
I know someone who worked the radio for a special event on USS Cod and from his description, Cod sounds like a really neat museum. I would like to visit both Cod and New Jersey.
Maybe not THIS guy. But the USS COD SS-224; is in Cleveland.
@@wtmayhew Cod is FANTASTIC. Arguably the best WWII submarine museum if we are being honest. She hasn't had any holes cut in her, she's the most complete. She still runs (although she doesn't have her screws anymore, she's not allowed to because she's on the lake)
I look at the stern of that destroyer, and I see a monster wakeboat.
We have the technology to take old battleships and submarines, and retrofit them, into space ships
The last pre-Dreadnought; IJN Mikasa, is another ship with notable non-combat damage.
I’m dying to know what legal reasons he would have for not wanting to talk about the railings on Titanic.
Titanic tourism does a lot of damage.
It always amazes me that they put a single rudder for a twin screw ship. Sure, its cheaper, but you want these ships in particular to be handy... One rudder between two screws does not help a ship be handy.
18th, 6 December 2024
where's the electrolysis? kind of have to disagree with what this guy is saying. denting the steel isnt doing much metallurgically, however when bending/twisting/denting steel you cause microscopic cracks in the face of the steel, which gives a place for corrosion to get a foot hold if its not painted over, or sealed. corrosion from fire likewise has burnt off the paint, and left behind ash, which leaves the metal unprotected.
Plastic deformation leads to work hardening, which is a change in the lattice structure of the steel. You are introducing more dislocations in the lattice. But I don't see what that has to do with anything.
I'm certainly no expert but I have seen vids about boats in marinas experincing electrolysis damage because of shore power not being connected right to all the boats. Not sure if it was a shore power fault or improper boat electrical. Seemed like it ate up the zink quickly then what the zink was supposed to protect. Yup, quick search on Y.T. brought up lots of vids & evidence, check it out. I think that is more likely the corrosion problem here instead of a tugboat dent. USS Kidd is always on shore power 24-7. Thanks for video.
watch part II
@@garywayne6083 Thanks, Didn't know it was available yet. Stray electricity, I just wasn't buying the tug boat dents. But I bet dents and repairs could affect where electrolysis corrosion shows up.
Your injury was not service related.
It's non combat damage, not non combatant damage.
I know what you mean, but in theory it could be non combat damage caused by non combatants. 😊
So the title doesn't match the video content . Electrolysis?
Watch part II
lol scrap it