HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
<<  <  Page 2/2
Beth Stackpole
User Rank
Blogger
Re: A no-brainer?
Beth Stackpole   1/26/2012 12:54:31 PM
NO RATINGS
Dave, You just articulated the point that I was trying to make so much better than I did. It does seem like a no-brainer, especially if the technology has been around for a while. I'm wondering what hurdles there were preventing this from being put to use in any significant form prior to now. Or maybe it's that there wasn't a formal market for something like this given that composite materials are just now becoming so dominant in aerospace design.

Ann R. Thryft
User Rank
Blogger
Re: A no-brainer?
Ann R. Thryft   1/26/2012 12:22:07 PM
NO RATINGS

Thanks, William and Dave, for sharing your experience in this area. It surprises me that using composites as a repair material for aluminum didn't strike anyone as not a good idea, since their properties are so different. To my limited knowledge so far, repair materials for composites are supposed to pretty closely match the material they are replacing.

The whole subject of using coatings to monitor structural health does seem obvious, doesn't it? I notice that Stresscoat does not appear to address composites. The big deal about them is the fact that damage can be invisible, hence the attempts to make it visible under other wavelengths. And yes, you would think that research such as GKN's would have already occurred, and perhaps it has. Theirs was not easy to find, so it's possible there's other such research going on quietly.


Ann R. Thryft
User Rank
Blogger
Re: Intelligent everything
Ann R. Thryft   1/26/2012 12:20:45 PM
NO RATINGS

Beth, I understand that designing these different coatings is equally simple, whether one coating detects one energy level or multiple energy levels. Creating the actual coating may be a different story, but that wasn't entirely clear. In any case, GKN said it plans to sell the coatings as an integral part of its composite aircraft structural components, not as a separate product line.


Dave Palmer
User Rank
Platinum
A no-brainer?
Dave Palmer   1/26/2012 10:58:48 AM
NO RATINGS
Coatings such as Stresscoat have been used in experimental stress analysis for decades.  It seems like a no-brainer to use something like this for structural health monitoring.  Of course, it's easy to say that something is a no-brainer after someone else has already come up with it.  I'm just surprised that nobody came up with something like this sooner.

williamlweaver
User Rank
Platinum
Onboard Coatings
williamlweaver   1/26/2012 9:14:08 AM
NO RATINGS
Thanks for the article Ann! It is great to see this technology being commercialized and incorporated into engineering materials. I was involved in the development of diagnostic coatings which, when excited and viewed under specific wavelengths, provided surface information of temperature, pressure, strain, and cracks. The coatings were applied to the surface of the completed unit for testing. I'm delighted to learn of continued development of both surface and internal coatings during component manufacturing.

One of our biggest surprises came from using composite repair material when applied to traditional metals (aircraft aluminium). Our coatings were used to inspect the performance of a "composite Band-Aid" that could be used to field dress a fatigue crack until the panel could be replaced. The difficulty was that the mechanical performance of the composite material was so superior to the original alloy that the repair site was often a greater point of additional fatigue cracking in the original metal because of the sharp differences between the materials. I imagine things will be better and far superior when all of the components are made out of advanced composites in the first place. 


Beth Stackpole
User Rank
Blogger
Intelligent everything
Beth Stackpole   1/26/2012 7:03:59 AM
NO RATINGS
Very cool piece of development and one that would certainly benefit broader use of composites. The idea that a coating could deliver intelligent inspection capabilities is in some ways out there, but then again, in keeping with steady pace of technological advances. In many ways, the development strategy makes perfect sense. Do you have a sense of how difficult or how unique it is to develop a single coating with different signatures that can appear  different depending on different energy levels of impact?

<<  <  Page 2/2


Partner Zone
Latest Analysis
Get a load of these strange product designs. What's in the water these design engineers are drinking?
The Dutch are known for their love of bicycling, and they’ve also long been early adopters of green-energy and smart-city technologies. So it seems fitting that a town in which painter Vincent van Gogh once lived has given him a very Dutch-like tribute -- a bike path lit by a special smart paint in the style of the artist's “Starry Night” painting.
Cal Poly students use 3D printing to take flight -- and pass their class.
Celebrity engineer Grant Imahara will host a series of “webisodes” that will examine new technology and innovation from an engineer’s point of view.
The UX Italia video contest recognizes Italian machinery, technology, and other experience solutions that have contributed meaningful improvements to people’s lives and production processes. If you submit a three-minute video showcasing how the quality of Italian machinery's User eXperience is essential to your company's success, you just may win a trip to Italy.
More:Blogs|News
Design News Webinar Series
11/19/2014 11:00 a.m. California / 2:00 p.m. New York
11/6/2014 11:00 a.m. California / 2:00 p.m. New York
10/7/2014 8:00 a.m. California / 11:00 a.m. New York
12/11/2014 8:00 a.m. California / 11:00 a.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.
Dec 1 - 5, An Introduction to Embedded Software Architecture and Design
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.
Last Archived Class
Sponsored by Littelfuse
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