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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
In-service Testing of Composite Cylinders
WINS personnel have performed studies of the behavior of acoustic waves in Type III composite cylinders. A simple, low-profile ceramic piezoelectric disk was used in this application and it worked well. Input signal was sent to a transducer located on the top of the cylinder at the tangent point just inside the dome at one end, and received on the bottom tangent point at the other.
The interaction of the defects in these materials with transmitted ultrasound is complex and the effect on the transmitted wave may alter the waveform in ways other than simple amplitude changes. A significant change in cross-correlation coefficient between signals in undamaged materials and that obtained from a signal transmitted through a notch oriented parallel to the path between two sensors was obtained. A summary of the data obtained from a number of defects is shown in the table below.
The interaction of the defects in these materials with transmitted ultrasound is complex and the effect on the transmitted wave may alter the waveform in ways other than simple amplitude changes. A significant change in cross-correlation coefficient between signals in undamaged materials and that obtained from a signal transmitted through a notch oriented parallel to the path between two sensors was obtained. A summary of the data obtained from a number of defects is shown in the table below.
| Defect type | Defect size | Frequency (MHz) | Correlation Coefficient |
| Axial hole | 3.174 mm dia, 4.8 mm deep | 0.19 | 0.83 |
| Axial impact | 20 x 20 mm observable surface damage | 0.19 | 0.44 |
| Axial parallel notch | 25 x 2 x 2 mm | 0.19 | 0.83 |
| Axial perpendicular notch | 25 x 2 x 2 mm | 0.19 | 0.68 |
| Circumferential hole | 3.175 mm dia, 4.8 mm deep | 0.322 | 0.79 |
| circumferential damage | 20 x 20 mm observable surface damage | 0.322 | 0.69 |
| circumferential parallel notch | 25 x 2 x 2 mm | 0.322 | 0.93 |
| circumferential perpendicular notch | 25 x 2 x 2 mm | 0.322 | 0.85 |