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
The grab bag of plastic and rubber materials featured in this new product slideshow are aimed at lighting applications or automotive uses. The rest are for a wide variety of industries, including aerospace, oil & gas, RF and radar, automotive, building materials, and more.
A new 3D printer that prints fully functional electronics -- like quadcopters -- will be available later this year from Voxel8, brainchild of Harvard prof Jennifer A. Lewis.
Many of the new adhesives we're featuring in this slideshow are for use in automotive and other transportation applications. The rest of these new products are for a wide variety of applications including aviation, aerospace, electrical motors, electronics, industrial, and semiconductors.
A Columbia University team working on molecular-scale nano-robots with moving parts has run into wear-and-tear issues. They've become the first team to observe in detail and quantify this process, and are devising coping strategies by observing how living cells prevent aging.
Many of the new materials on display at MD&M West were developed to be strong, tough replacements for metal parts in different kinds of medical equipment: IV poles, connectors for medical devices, medical device trays, and torque-applying instruments for orthopedic surgery. Others are made for close contact with patients.
Design News Webinar Series
2/25/2015 11:00 a.m. California / 2:00 p.m. New York
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
12/10/2014 8:00 a.m. California / 11:00 a.m. New York
11/19/2014 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.
Mar 9 - 13, Implementing Motor Control Designs with MCUs and FPGAs: An Introduction and Update
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  67


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.
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service