jem
Elder Statesman
Posts: 1,065
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Post by jem on Dec 11, 2016 17:08:58 GMT
Slightly off key, but why are aircraft held together with rivets still? Ships are all welded, and welding technology is very advanced today,s o why not aircraft?
Best wishes
Jem
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Post by joanlluch on Dec 11, 2016 17:53:15 GMT
Slightly off key, but why are aircraft held together with rivets still? Ships are all welded, and welding technology is very advanced today,s o why not aircraft? Best wishes Jem Hi Jem, that's an interesting observation. I would like to know also. My take is that aviation grade high strength aluminum alloys would loose (or be at risk of loosing) properties when subjected to the high welding temperatures. By using rivets, the loads that components are subjected to are more predictable. That's just a guess, I hope someone is able to give a more informed reply.
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Post by Deleted on Dec 11, 2016 18:38:22 GMT
Slightly off key, but why are aircraft held together with rivets still? Ships are all welded, and welding technology is very advanced today,s o why not aircraft? Best wishes Jem Hi Jem When I read this my mind first thought of issues with welding aluminium may be the answer...I searched google looking for info on welding aluminium on aircraft and found this well-written discussion here aviation.stackexchange.com/questions/16995/why-are-planes-using-rivets-not-welded-constructionPete
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Post by Cro on Dec 11, 2016 18:40:52 GMT
I don't know the answer on that one Jem but I can tell you that every plane you fly in has hundereds of cracks all over it!
Don't worry though we make the machines that do the crack testing so every crack is known about and deemed safe....! Always fun seeing people's faces when you tell them this though!
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abby
Statesman
Posts: 925
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Post by abby on Dec 11, 2016 20:13:21 GMT
Back in the late 60's I worked in the aircraft industry as a lab technician ,some panels were spot or TIG welded and even laser welding was being carried out at that time but most of the stressed panels we manufactured from aluminium alloys were subject to salt bath heat treatment which would bring the tensile strength to a level higher than some steels. These panels were joined by rivets as welding would have altered the properties of the panels around the welded areas.
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Post by vulcanbomber on Dec 11, 2016 22:36:40 GMT
The Dehavilland Comet. The world first jet airliner used a lot of Glue.
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