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

Aerospace-Grade Composites Will Repair Themselves

NO RATINGS
1 saves
View Comments: Newest First|Oldest First|Threaded View
<<  <  Page 2/4  >  >>
Ann R. Thryft
User Rank
Blogger
Re: Self healing process
Ann R. Thryft   5/27/2014 1:20:00 PM
NO RATINGS
Mydesign, I totally agree.

Mydesign
User Rank
Platinum
Re: Self healing process
Mydesign   5/23/2014 5:35:03 AM
NO RATINGS
1 saves
"a much wider operating temperature range is also needed in space, and also in military environments. OTOH, notice where the funding comes from: three different military-related sources, so you can bet they expect an ROI."

Ann, you are right. Wait and see is my answer for the second part.

Ann R. Thryft
User Rank
Blogger
Re: Self healing process
Ann R. Thryft   5/22/2014 1:28:48 PM
NO RATINGS
J. Lombard, thanks for your thoughtful and thorough comments. I had the same initial thought about repairing the matrix layers vs the fibers within them: this may work for delam issues but what about breaks in fibers? OTOH, as the authors say in their article's introduction, delam problems are among the most common, hardest to detect, and most difficult to repair, and these problems are at the top of the list for why composites haven't been adopted more widely for structural components. That's one of the main reasons why the researchers tackled these issues first.
Some of your other questions may be answered by the article itself. (Hint: a free copy is located on the website of one of the team's leaders: http://sottosgroup.beckman.illinois.edu)



Ann R. Thryft
User Rank
Blogger
Re: Self healing process
Ann R. Thryft   5/21/2014 12:55:03 PM
NO RATINGS
That's a good point, Mydesgn--a much wider operating temperature range is also needed in space, and also in military environments. OTOH, notice where the funding comes from: three different military-related sources, so you can bet they expect an ROI.

fdos
User Rank
Iron
Re: Self healing process
fdos   5/19/2014 6:16:23 AM
NO RATINGS
@Elizabeth: Anyway taking short cust at this juncture is too risky. 

Elizabeth M
User Rank
Blogger
Re: Self healing process
Elizabeth M   5/19/2014 5:59:50 AM
NO RATINGS
Well that's good to know, Ann. This type of use is too critical to take any shortcuts!

Mydesign
User Rank
Platinum
Re: Self healing process
Mydesign   5/19/2014 2:46:00 AM
NO RATINGS
1 saves
"Materials used in spacecraft, however, must withstand a lot more than those used in commercial planes, such as meteor strikes and radiation. This type of self-repair system might not do so well in spacecraft unless it was redesigned to accommodate those specific needs. Similar issues apply for use in military applications."

Ann, you are right and apart from that heat is also a major issue when the flight moves across different atmospheric level.

Ann R. Thryft
User Rank
Blogger
Re: Self healing process
Ann R. Thryft   5/16/2014 12:16:47 PM
NO RATINGS
Mydesign, there are definitely problems repairing fiber-reinforced composites in both aircraft and spacecraft -- because of the material's failure charactertistics and because of access issues -- and this material could be potentially used for both applications. Materials used in spacecraft, however, must withstand a lot more than those used in commercial planes, such as meteor strikes and radiation. This type of self-repair system might not do so well in spacecraft unless it was redesigned to accommodate those specific needs. Similar issues apply for use in military applications.



Ann R. Thryft
User Rank
Blogger
Re: Self healing process
Ann R. Thryft   5/16/2014 11:37:15 AM
NO RATINGS
fdos, this is a commercial aerospace-grade composite, meaning it's aimed at commercial aircraft, not military aircraft or any other military vehicles. Materials made to withstand missiles, bullets, etc. are made to a different set of standards.

Mydesign
User Rank
Platinum
Re: Self healing process
Mydesign   5/16/2014 1:03:39 AM
NO RATINGS
1 saves
"New generation large aircraft are designed with all composite fuselage and wing structures, and the repair of these advanced composite materials requires an in-depth knowledge of composite structures, materials, and tooling. The primary advantages of composite materials are their high strength, relatively low weight, and corrosion"

Bmoray, you are right about composite material.

<<  <  Page 2/4  >  >>
Partner Zone
More Blogs from Engineering Materials
A new report from the National Institute of Standards and Technology (NIST) makes a start on developing control schemes, process measurements, and modeling and simulation methods for powder bed fusion additive manufacturing.
Although bio-based polymers face challenges from petroleum-based polymers, in certain markets they can displace the petro-based incumbents. Here are six new bio-based and renewable plastics for a variety of applications.
BASF has developed tools and initiatives to help engineers use more of its renewable materials in their designs, more effectively, as well as to build parts using them with more predictable performance.
Just in time for Earth Day, chemicals leader Bayer MaterialScience reported from the UTECH Europe 2015 polyurethane show on programs and applications using its materials to help reduce energy usage. The company also gave an update on its CO2-based PU as that eco-friendly material comes closer to production.
A slew of announcements about new materials and design concepts for transportation have come out of several trade shows focusing on plastics, aircraft interiors, heavy trucks, and automotive engineering. A few more announcements have come independent of any trade shows, maybe just because it's spring.
Design News Webinar Series
3/31/2015 11:00 a.m. California / 2:00 p.m. New York
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
5/7/2015 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.
May 4 - 8, Designing Low Power Systems using Battery and Energy Harvesting Energy Sources
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7


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.
Last Archived Class
Sponsored by Proto Labs
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