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Level I MT-PT Training course scheduled for October 2010 in State College, PA.
Level II UT Training course scheduled for September 2010 in State College, PA.
Level I UT Training course scheduled for August 2010 in State College, PA.
Level III Acoustic Emission Training course completed (July 30) in State College, PA.
Level III UT Training course completed (July 23) in State College, PA.
Level II Acoustic Emission Testing course completed (July 16) in State College, PA
UT weld inspection course completed (July 8) in State College, PA
Level II Ultrasonic Testing course completed (July 2) in State College, PA
Level III UT Training course completed in State College, PA, June 2010
WINS personnel delivered invited speech on H-Pile inspection technology at "Life cycle performance of bridges and structures" conference at Changsha, China in June 2010
View a presentation on the Principles and applications of long range ultrasound, from ASNT Greater Phila chapter meeting, April 2010
Level III UT Training course completed in State College, PA, March 2010
WINS presents talk on ultrasonic guided wave potential towards helicopter maintenance to Indian Air force, February 2010
WINS funded by Transportation Research Board to develop Bridge Cable Inspection Technology, February 2010
Watch video of Wireless Acoustic Emission Sensor Network for Bridge Structural Health Monitoring
Bridge Structural Health Monitoring using Acoustic Emission
WINS offers acoustic emission (AE) based steel bridge structural health monitoring services. It may be deployed remotely for hours or months depending on the application. For longer monitoring periods, the client can login through a secure on-line connection to observe real-time inspection results. Sensors are rapidly deployed on target structures. Bridge configurations most often monitored include:
- Hanger connections
- Link pin connection
- Copes and stringers
- Stiffener to weld connections
The vast majority of steel bridges currently in use are:
- well beyond their original design life,
- loaded significantly above their original design values,
- experiencing premature structural problems from component fatigue.
Safely extending the life while maximizing load ratings of such railway bridges, and maintaining ongoing, uninterrupted traffic operations, are great economic benefits to the bridge owner. Achieving such goals depends to a large extent on developing and maintaining an effective bridge inspection program.
Active, or growing, flaws in safety critical structures emit acoustic emission (AE) under load while dormant flaws do not emit AE. The active flaws are ranked according to activity and intensity and a Fatigue Crack Index (FCI) - between the range of 1 and 5 - is generated. An FCI 0 recommends maintaining normal maintenance practices. An FCI 5 recommends immediate operations control and maintenance assessment.
Economic Impact of Continuous AE Monitoring
In a case study of a 1000-foot long open deck bridge built in 1910 with roughly 33 million gross tons of annual traffic, which is approximately 115% increase since its construction, cracks were observed at the bottom of intermediate stiffeners where they connect to the transverse brace frames. The replacement of these spans, estimated at approximately $10 M appeared to be the inevitable recourse. AE monitoring carried out by WINS assessed the crack activity levels of critical areas. It was possible to delay replacement and adopt a manageable risk strategy to maintain existing and projected levels of safe train operations.
Our American Society for Nondestructive Testing (ASNT) certified inspectors have complementary training in fall protection, highway safety, railway safety, and confined space safety. With over 300 bridges tested to date, we have a proven track record for high quality nondestructive testing services and safety.