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WINS 2012 NDT Training Course Calendar: Contact us right away!
Level I/II MT/PT course in State College, PA December 12-15, 2011
Level I UT course completed in State College, PA December 5-9, 2011
Level III NDT Consultation Services for procedure development, personnel qualification, training etc. available
WINS expands fiberglass and steel tank inspection capability to include remote visual inspection.
WINS expands fiberglass and steel tank inspection capability to include remote visual inspection.
Level II UT course completed in State College, PA October 6-9, 2011
Level II AE course completed in State College, PA October 24-28, 2011
Level I MT/PT course completed in State College, PA October 10-11, 2011
Level I UT course completed in State College, PA September 26-30, 2011
Level I/II MT course completed in State College, PA September 22-23, 2011
Level I UT course completed in State College, PA September 6-9, 2011
Level I/II MT/PT course completed in State College, PA August 29-31, 2011
UT Weld Inspection course in Somers, CT August 23-25, 2011
Level II UT course completed in State College, PA August 15-19, 2011
Level I UT course completed in State College, PA August 12, 2011
Level II UT course completed in Toronto, OH, July 23, 2011
Level I UT course completed in State College, PA July 15, 2011
Level I/II MT/PT course completed in Mayfield, OH July 8, 2011
Level I/II MT course completed in Indiana, PA June 29, 2011
Level I UT course in State College, PA March 28-April 1, 2011
Level I AE course in State College, PA March 21-25, 2011
WINS President delivered a talk at the ASNT Pittsburgh Chapter on Acoustic Emission on March 17, 2011
View a presentation on the Principles and applications of long range ultrasound
WINS funded by Transportation Research Board to develop Bridge Cable Inspection Technology.
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 |