PaintSquare.com
Follow us on Twitter Follow us on LinkedIn Like us on Facebook Follow us on Instagram Visit the TPC Store
Search the site

 

Advertisement

PaintSquare


Coatings Industry News

Main News Page


Electricity Jolts Corrosion Research

Monday, December 16, 2013

Comment | More

Researchers have made a shocking discovery about bridge corrosion: Electricity may be able to detect rusting reinforcing steel.

University of Buffalo researchers believe they can detect corrosion by sending a jolt of electricity between opposite ends of steel cables. An inconsistency in the charge would tell them that the cable is corroding.

"The No. 1 priority of all civil engineers is the safety of the public," said Tresor Mavinga, a UB senior civil engineering and mathematics major involved in the research.

University of Buffalo

Researchers at the University of Buffalo embedded transducers into each end of a steel cable and sent a jolt of electricity through it. If the charge loses energy, it could indicate the presence of corrosion.

"Corrosion can affect any structure, not just bridges, and we don't want that to happen. We need to be as accurate as possible to save money, time and lives."

A Failing Grade

Corrosion problems have increased significantly over the last three decades, according to the Federal Highway Administration, partly because of the increased use of road de-icing salts.

The American Society of Civil Engineers gave U.S. bridges a C+ grade in its 2013 Report Card for America's Infrastructure. Overall, infrastructure was given a D+ grade—a modest improvement from its D rating in the previous report.

The report said that there were 71,177 structurally deficient bridges and 78,477 functionally obsolete bridges in the country.

Firing Up Corrosion

Salvatore Salamone, assistant professor of civil engineering, led the research team, which included Mavinga and Alireza Farhidzadeh, a civil engineering graduate student.

The team embedded piezoelectric transducers into each of of a wire. The devices convert a signal from one form of energy to another.

Using ultrasonic-guided waves, they fired one volt of electricity through the cable and monitored the charge at each end. The experiment was repeated with the same wire after it was rusted with a saltwater mixture. The corroded cables lost most of the energy from the electrical charge during the transfer.

This method would be permanently attached to the cables, so engineers could test for corrosion from an off-site location and wouldn't have to rely on time-consuming and expensive visual inspections.

   

Tagged categories: American Society of Civil Engineers (ASCE); Bridges; Corrosion; Federal Highway Administration (FHWA); Infrastructure; Research

Comment Join the Conversation:

Sign in to our community to add your comments.

Advertisements
 
Safway Services
 
Safeguard Assets. Ensure Productivity. HAKI®
 
Protect assets and equipment. Keep facilities open and operational. Maintain schedules regardless of weather. Ensure smooth and continuous production. Easy to erect. Safway is the primary distributor of HAKI® products including HAKISPAN and HAKITEC® 750 – in North America.
 

 
Industrial Vacuum Equipment Corp.
 
Hurricane Vacuums
& Dust Collectors
 
Vacuum and dust collector hose, filters and related accessories.
IndustrialVacuum.com
 

 
SEMicro Division, M.E. Taylor Engineering, Inc.
 
Coatings Adhesion Testers
 
The PATTI® accurately measures the bond strength between coating & substrate. Outfitted properly, the surface can be rough, porous, or curved & >10K psi strong!
 

 
Detail Masters
 
Overspray Removal
 
We offer professional, turnkey service and unparalleled quality!
Our process can save hundreds— even thousands of dollars. It's fast, environmentally safe and 100% guaranteed.
 

 
PPG Protective and Marine Coatings Group
 
We Protect and Beautify the World
 
PPG is widely recognized as a world leader in protective and marine coatings, developing innovative, cutting-edge products and services.
 

 
Abrasives Inc.
 
Discover the MAGIC.
 
Black Magic® coal slag. It’s consistent, cleaner, cuts better, less dust. Get it where you need it, when you need it. Abrasives Inc. info@abrasivesinc.com
 

 
Termarust Technologies
 
Termarust (HR CSA) Chemically Stops
Active Corrosion
 
Arch truss treated with Termarust's (HR CSA) in 2003. This steel arch bridge is rust free on all surfaces including the crevice corroded joints and connections.
 

 
Tnemec Company, Inc.
 
Online Coating Courses from Tnemec
 
For decades, Tnemec has offered its expertise to clients presenting face-to-face coatings courses. Now, these presentations are available to anyone for CEUs at Tnemec University.
 

 
HoldTight Solutions Inc.
 
NO FLASH RUST - NO CONTAMINANTS
 
Our HoldTight®102 salt remover & flash rust
preventer prevents flash
rust by removing surface contaminants. Contact us
for your nearest distributor.
(800) 319.8802 sales@holdtight.com
 

 
SAFE Systems, Inc.
 
SAFE Systems'
Blast Lights &
Deadman Switches
 
Halogen or LED blast lights available with our NEW urethane bumper. Switches available in many colors for color coding your hoses.
 

 
 
 

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

Durability + Design 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   |   Site Map   |   Search   |   Contact Us