HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Blogs
Engineering Materials

Single-Piece Aluminum Tank Hull Will Resist IEDs

NO RATINGS
View Comments: Newest First|Oldest First|Threaded View
Ann R. Thryft
User Rank
Blogger
Re: Ship Al
Ann R. Thryft   11/6/2013 1:03:43 PM
NO RATINGS
Watashi, thanks for telling us your experience. Interesting about the combination of fuel heating hot enough to burn aluminum. As we've pointed out here, the material being developed for use in military land vehicles is not the same as was being used in ships or other vehicles during earlier conflicts.

Watashi
User Rank
Platinum
Ship Al
Watashi   11/5/2013 11:45:18 AM
NO RATINGS
Speaking for the aluminum on ships – I served on the same class of Guided Missile Frigate (FFG) as the USS Stark that was nearly sunk by Iraqi Exocet missiles in 1987.  The biggest concern FFGs faced with the aluminum structures was its propensity to ignite and burn.  

The unspent rocket fuel from the missiles that hit the Stark burned hot enough to cause the aluminum to ignite.  This isn't an issue for blast protection purposes, but the ship aluminum was never intended to protect from blasts, just to protect from seawater.  Even at that, I sailed through storms that beat our ship bad enough to require yard work while steel ships survived (structurally) just fine.

Ann R. Thryft
User Rank
Blogger
Re: Methodof Manufacture
Ann R. Thryft   11/4/2013 1:07:09 PM
NO RATINGS
Tool_maker, I wish Alcoa was more forthcoming with those kinds of details, too, but they generally don't give them out.

Ann R. Thryft
User Rank
Blogger
Re: That is one big press!
Ann R. Thryft   11/4/2013 1:05:30 PM
NO RATINGS
Thanks for your comment, Thinking_J. I agree, this breaks the boundaries of the sizes that can usually be forged. That's one reason I wrote about it.

Tool_maker
User Rank
Platinum
Methodof Manufacture
Tool_maker   11/4/2013 12:46:53 PM
NO RATINGS
I wish this article had gone into a little more depth as to how this forging will be accomplished. For example: Will it be done hot? What sort of manipulator will be used? How many press strokes will be required? With what sort of blank are they starting? How much variation between thickest and thinnest cross sections? What is the anticipated cycle time?

Thinking_J
User Rank
Platinum
That is one big press!
Thinking_J   11/1/2013 5:07:21 PM
NO RATINGS
I would have expected something like this to be cast.. not forged.

VERY tough to forge pieces this big with variable thickness walls (of significant wall thickness).

But forging does bring some additional structal benifits compared to casting.

 

Rob Spiegel
User Rank
Blogger
Protecting the tanks
Rob Spiegel   10/31/2013 8:20:47 PM
NO RATINGS
It's good to see the U.S. Army Research Lab and Alcoa are working to protect those service folks inside the tanks. This work will likely save many lives.

Partner Zone
More Blogs from Engineering Materials
NASA's MAVEN spacecraft has entered Mars' atmosphere, carrying instruments to help Earthlings figure out what happened to it. Launched last November, the spacecraft arrived at the red planet right on time after a journey of 442 million miles.
More bioplastic materials have entered the 3D-printable filament fray. These PLA formulations reinforced with wood or bamboo fibers will debut at the October Composites Europe show in Germany.
Airbus Defence and Space has 3D printed titanium brackets for communications satellites. The redesigned, one-piece 3D-printed brackets have better thermal resistance than conventionally manufactured parts, can be produced faster, cost 20% less, and save about 1 kg of weight per satellite.
At IMTS last week, Stratasys introduced two new multi-materials PolyJet 3D printers, plus a new UV-resistant material for its FDM production 3D printers. They can be used in making jigs and fixtures, as well as prototypes and small runs of production parts.
GE Aviation not only plans to use 3D printing to mass-produce metal parts for its LEAP jet engine, but it's also developing a separate technology for 3D-printing metal parts used in its other engines.
Design News Webinar Series
9/25/2014 11:00 a.m. California / 2:00 p.m. New York
9/10/2014 11:00 a.m. California / 2:00 p.m. New York
7/23/2014 11:00 a.m. California / 2:00 p.m. New York
7/17/2014 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Oct 20 - 24, How to Design & Build an Embedded Web Server: An Embedded TCP/IP Tutorial
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: October 1
Sponsored by Altera
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service