Coatings Industry News

Main News Page


Optical Analysis Evaluates Jet Engine Coatings

Tuesday, August 15, 2017

Comment | More

Researchers in the U.K. say they’ve pioneered a method of detecting areas of weakness in the thermal barrier coatings that protect jet engine turbines, an innovation that could help with quality control and the development of new ceramic coatings.

Optical analysis
Peter J. Schemmel, Heriot-Watt University

The team, at Heriot-Watt University, used gigahertz illumination to analyze the refractive index of ceramic coatings on jet engine turbines that were exposed to tensile strain.

The Optical Society of America reports that a team from Heriot-Watt University, with support from jet engine manufacture Rolls-Royce, developed the optical analysis method. In the study, changes in the refractive index of coated turbine blades were observed before and after the blades were subjected to strain in a tensile machine.

“Our strain-measurement technique can analyze the coatings immediately after manufacturing and work to identify the turbine blades that would last the longest in the airplane,” said the team’s head researcher, Andrew J. Moore. “Ultimately, we want to develop an imaging device that would show the strain distribution in the coating of an entire turbine blade, information that would be used to decide if that turbine blade would go into service.”

Accelerated Aging

The team used gigahertz illumination to analyze the refractive index of the coatings and how it changed after tensile stress. They are also in the process of performing accelerated aging testing on the turbines in order to examine the correlation between differences in refractive index and service life before coating failure.

“If we can correlate how the strain distribution is related to the coating’s lifetime, then we could determine which coatings will fail first and shouldn’t be put into an aircraft and which ones will last much longer,” said Moore. “This would increase the time between services significantly, which would bring huge savings.”

The team is also experimenting with terahertz illumination, according to the Optical Society.

The new research was published in Optics Express.

   

Tagged categories: Aerospace; AS; Asia Pacific; Ceramic coatings; EMEA (Europe, Middle East and Africa); EU; Industrial coatings; Latin America; NA; North America; Quality control; Quality Control; SA; Testing + Evaluation

Comment Join the Conversation:

Sign in to our community to add your comments.


Advertisements
 
SAFE Systems, Inc.

 
Fischer Technology Inc.

 
DeFelsko Corporation

 
KTA-Tator, Inc. - Corporate Office

 
ABKaelin, LLC

 
Tarps manufacturing, Inc.

 
Sauereisen, Inc.

 
Sidewinder/Persyst Enterprises, Inc.

 
HoldTight Solutions Inc.

 
Mitsubishi Gas Chemical America

 
 
 

Technology Publishing Co., 1501 Reedsdale Street, Suite 2008, Pittsburgh, PA 15233

TEL 1-412-431-8300  • FAX  1-412-431-5428  •  EMAIL webmaster@paintsquare.com


The Technology Publishing Network

PaintSquare the Journal of Protective Coatings & Linings Paint BidTracker

 
EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About PaintSquare.com   |   Privacy Policy   |   Terms & Conditions   |   Support   |   Site Map   |   Search   |   Contact Us