61–70 of 75 posts
> the Riace Bronzes of Greek warriors found in the sea off Sicily
Well, Riace is in Calabria, not in Sicily. If you want to insert a nice quote in your article, how difficult and time consuming can be to check on the internet it in 2016?
On this topic, I'd like to ask how 3D printed parts fair in the new engines being built. [1] I'd love to hear about this from a Metallurgical Engineer or a Material Science Expert. [1] http://qz.com/667477/ge-fires-up-worlds-largest-commercial-j...
Let me nitpick just a bit: > the Riace Bronzes of Greek warriors found in the sea off Sicily Well, Riace is in Calabria, not in Sicily. If you want to insert a nice quote in your article, how difficult and time consuming can be to check on the internet it in 2016?
Let me nitpick just a bit: > the Riace Bronzes of Greek warriors found in the sea off Sicily Well, Riace is in Calabria, not in Sicily. If you want to insert a nice quote in your article, how difficult and time consuming can be to check on the internet it in 2016?
Unnecessary nitpick. The sea is between Calabria and Sicily.
https://www.google.it/maps/place/89040+Riace+Marina+RC/@38.8...
Same question for you as for the author: how long would have it taken to check?
Earlier quoted context omitted.
Unnecessary nitpick. The sea is between Calabria and Sicily.
Ehm, no, not really! https://www.google.it/maps/place/89040+Riace+Marina+RC/@38.8... Same question for you as for the author: how long would have it taken to check?
I had the chance recently to see the Mayor of the City of London's (the strange city-within-a-city bit of London) two Rolls Royce's they keep for formal occasions up close. They are super rare (only ~400 ever made), worth a whole lot of money and looked amazing . I'm not a car person but you can't help but feel a shiver when you see a car like that. The engines where the same as the ones they used in the Spitfire fig…
> Rolls is one of the things that makes me proud to be British.
I'd like to note few things: single crystal is the best way to fight creep, but that's it. This is very specific problem with very specific solution. For most engineering problems you would prefer high fatigue strength or high ductility. Single crystal is poor for both. Another thing is that single crystal metal is very distinct from amorphous metal. Neither has grain boundaries, but single crystal is very strictly o…
I'd like to note few things: single crystal is the best way to fight creep, but that's it. This is very specific problem with very specific solution. For most engineering problems you would prefer high fatigue strength or high ductility. Single crystal is poor for both. Another thing is that single crystal metal is very distinct from amorphous metal. Neither has grain boundaries, but single crystal is very strictly o…
Earlier quoted context omitted.
My graduate research was on a corner of the class of ceramic materials that are used as coatings on top of this type of turbine blades. Anything specifically you would like to know? Generally, single crystal blades are designed for their resistance to creep at high temperatures. If your predominate creep mechanism is sliding at grain boundaries in a polycrystalline material, you can impart creep resistance by removin…
What sorts of considerations are important for the ceramic coating? I'd assume that the coating is not under the same types of stress as the alloy core, and so thermal properties would be more important. Is that true, or is load as much of a factor there too?
The dominant concerns I am aware of are low thermal conductivity, thermal stability, and lack of chemical attack in the environments in question.