Google Answers Logo
View Question
 
Q: Steady Drop Material ( Answered 4 out of 5 stars,   2 Comments )
Question  
Subject: Steady Drop Material
Category: Science
Asked by: roofengineer-ga
List Price: $10.00
Posted: 30 Sep 2004 16:55 PDT
Expires: 30 Oct 2004 16:55 PDT
Question ID: 408627
I'm looking information on a material called "steady drop".  It is a
material which can absorb kinetic energy.  It is reportedly used in
the Army's M1 tanks to keep shrapnel from flying around.  It is able
to absorb the energy of a golf ball dropped on it from about 6 feet
with no visible bounce.
Answer  
Subject: Re: Steady Drop Material
Answered By: redhoss-ga on 01 Oct 2004 18:18 PDT
Rated:4 out of 5 stars
 
Hello roofengineer, this sounded like what you were describing to me
too. Here is the info you need:

http://www.earsc.com/applications.asp?id=132&childid=44&parentid=43

Ammunition rack for M1A1 tank

For product information, please see ISODAMP® C-1002 damping material.

Problem: The U.S. Army?s Ballistics Research Lab sought a design for
an ammunition rack for the M1A1 tank that could withstand the
detonation of one of the rack?s stored warheads without causing the
remainder to explode. By design, the M1A1 tank and, in turn, the
military personnel it carries, can survive a single warhead explosion.

Problem-solving process: To achieve the Army?s required level of
survivability, design engineers must incorporate highly
energy-absorbent materials into the ammunition rack, to mitigate
quickly?literally in a split second?extremely powerful shock waves and
prevent sympathetic detonation of adjacent warheads. Army research
engineers had developed a new rack design, for which E-A-R engineers
designed antifratricide barriers, molded from ISODAMP C-1002 highly
damped thermoplastic elastomer. The rack somewhat resembled a wine
rack, with horizontal tubes supporting each warhead.

Solution: E-A-R developed antifratricide bars comprising C-1002
material molded over steel. Depending on their placement in the rack,
the bars were either flat, flat-and-arched or round. When the bars are
bolted into place, they form a thick, super-energy-absorbent barrier
around and between the tubes.

Result: When the Army tested an eight-round prototype ammunition rack,
outfitted with C-1002 material and installed in a simulated M1A1 tank,
only the intentionally detonated warhead went off; the remaining seven
still contained unburned explosives.

Potential applications: Bumpers and crash stops for conveying systems.
Isolation mounts for pumps, fans, motors.

Additional problems/solutions to consider: ISODAMP C-1002
thermoplastic shock protection for ceramic armor.

E-A-R Specialty Composites manufactures and markets proprietary
elastomers for noise and vibration control, shock protection and
ergonomics. We maintain headquarters and a production facility in
Indianapolis and a plant in Newark Del., near Philadelphia. Both
plants are QS 9000 certified.
 
E-A-R is a business unit of Indianapolis-based Aearo Company, a
leading manufacturer of safety equipment, including earplugs, safety
glasses and respirators.

To find out more about E-A-R Specialty Composites and the
energy-control solutions we provide, visit the areas listed below:

Single Source Supplier 
Broadest Product Lines 
In-House Production 
Quality Service 
Applications Engineering 

For more information about our products, technology or capabilities,
phone toll free 877-EAR-IDEA (327-4332) or contact us via e-mail at
solutions@earsc.com.

Hope this helps you out, Redhoss
roofengineer-ga rated this answer:4 out of 5 stars
Red - thanks!!  Exactly what I was looking for.
Roof

Comments  
Subject: Re: Steady Drop Material
From: redhoss-ga on 30 Sep 2004 18:41 PDT
 
Problem: The U.S. Army?s Ballistics Research Lab sought a design for
an ammunition rack for the M1A1 tank that could withstand the
detonation of one of the rack?s stored warheads without causing the
remainder to explode. By design, the M1A1 tank and, in turn, the
military personnel it carries, can survive a single warhead explosion.

Problem-solving process: To achieve the Army?s required level of
survivability, design engineers must incorporate highly
energy-absorbent materials into the ammunition rack, to mitigate
quickly?literally in a split second?extremely powerful shock waves and
prevent sympathetic detonation of adjacent warheads.

Does this sound like what you are looking for.
Subject: Re: Steady Drop Material
From: roofengineer-ga on 01 Oct 2004 11:52 PDT
 
Redhoss - this does indeed sound what I'm looking for.  I'm actually
looking to put this stuff to use in an industrial application.

Important Disclaimer: Answers and comments provided on Google Answers are general information, and are not intended to substitute for informed professional medical, psychiatric, psychological, tax, legal, investment, accounting, or other professional advice. Google does not endorse, and expressly disclaims liability for any product, manufacturer, distributor, service or service provider mentioned or any opinion expressed in answers or comments. Please read carefully the Google Answers Terms of Service.

If you feel that you have found inappropriate content, please let us know by emailing us at answers-support@google.com with the question ID listed above. Thank you.
Search Google Answers for
Google Answers  


Google Home - Answers FAQ - Terms of Service - Privacy Policy