Surface Crack & Scratch Detection in Metals

Journal Publications

  1. Donnell, K.M., A. McClanahan and R. Zoughi, “On the Crack Characteristic Signal from an Open-Ended Coaxial Probe,” IEEE Transactions on Instrumentation and Measurement, vol. 63. No. 7, pp. 1877-1879, July 2014.
  2. De, S., K. Gupta, R.J. Stanley, M.T. Ghasr, R. Zoughi, K. Doering, D. Van Aken, G. Steffes, M. O’Keefe, D. Palmer, “A Comprehensive Structural Analysis Process for Failure Assessment in Aircraft Lap-Joint Mimics Using Multi-Modal Fusion of NDE Data,” IEEE Transactions on Instrumentation and Measurement, vol. 62, no. 4, pp. 814-827, April 2013.
  3. De, S., K. Gupta, R.J. Stanley, R Zoughi, K. Doering, D. Van Aken, G. Steffes, M. O’Keefe and D. Palmer, “A Comprehensive Structural Analysis Process for Failure Assessment in Aircraft Lap-Joint Mimics using Intra-Modal Fusion of Eddy Current Data,” Research in Nondestructive Evaluation, vol. 23, no. 3, pp. 146-170, July-September 2012.
  4. Kharkovsky, S., A. McClanahan, R. Zoughi and D. Palmer, “Microwave Dielectric-Loaded Rectangular Waveguide Resonator for Depth Evaluation of Shallow Flaws in Metals,” IEEE Transactions on Instrumentation and Measurement, vol. 60, no. 12, pp. 3923-3930, December 2011.
  5. McClanahan, A., S. Kharkovsky, R. Zoughi, A. Maxon and D.D. Palmer, “Depth Evaluation of Shallow Surface Cracks in Metals Using Rectangular Waveguides at Millimeter-Wave Frequencies,” IEEE Transactions on Instrumentation and Measurement, vol. 59, no. 6, pp. 1693-1704, June 2010.
  6. Kharkovsky, S., M.T. Ghasr and R. Zoughi, “Near-field Millimeter Wave imaging of Exposed and Covered Fatigue Cracks,” IEEE Transactions on Instrumentation and Measurement, vol. 58, no. 7, pp. 2367-2370, July 2009.
  7. Zoughi, R. and S. Kharkovsky, “Microwave and Millimeter Wave Sensors for Crack Detection,” Fatigue & Fracture of Engineering Materials & Structures, vol. 31, no. 8, pp. 695-713, 2008.
  8. Kharkovsky, S. and R. Zoughi, “Microwave and Millimeter Wave Nondestructive Testing and Evaluation – Overview and Recent Advances,” IEEE Instrumentation and Measurement Magazine, vol. 10, no. 2, pp. 26-38, April 2007.
  9. Ghasr, M., S. Kharkovsky, R. Zoughi and R. Austin, “Comparison of Near-Field Millimeter Wave Probes for Detecting Corrosion Precursor Pitting under Paint,” IEEE Transactions on Instrumentation and Measurement, vol. 54, no. 4, pp. 1497-1504, August 2005.
  10. Wang, N. and R. Zoughi, ”Moment Method Solution for Modeling the Interaction of Open-ended Coaxial Probes and Surface Cracks in Metals,” Materials Evaluation, vol. 60, no. 10, pp. 1253-1258, October 2002.
  11. Wang, Y. and R. Zoughi, “Interaction of Surface Cracks in Metals with Open-Ended Coaxial Probes at Microwave Frequencies” Materials Evaluation, vol. 58, no. 10, pp. 1228-1234, October 2000.
  12. Qaddoumi, N., E. Ranu, J.D. McColskey, R. Mirshahi and R. Zoughi, “Microwave Detection of Stress Induced Fatigue Cracks in Steel and Potential for Crack Opening Determination,” Research in Nondestructive Evaluation, vol. 12, no. 2, pp. 87-103, 2000.
  13. Zoughi, R., S.I. Ganchev and C. Huber, “Microwave Measurement-Parameter Optimization for Detection of Surface Breaking Hairline Cracks in Metals,” Nondestructive Testing & Evaluation, vol. 14, pp. 323-337, 1998.
  14. Huber, C., H. Abiri, S. Ganchev and R. Zoughi, “Modeling of Surface Hairline Crack Detection in Metals Under Coatings Using Open-Ended Rectangular Waveguides,” IEEE Transactions on Microwave Theory and Techniques, vol. 45, no. 11, pp. 2049-2057, November 1997.
  15. Ranu, E. and R. Zoughi, “Near-Field Microwave Nondestructive Distinction Between Surface Height Variations and Defects in Thick Sandwich Composites Using Standoff Distance Optimization,” Nondestructive Testing & Evaluation, vol. 13, pp. 215-225, 1997.
  16. Huber, C., S.I. Ganchev, R. Mirshahi, J. Easter and R. Zoughi, “Remote Detection of Surface Cracks/Slots Using Open-Ended Rectangular Waveguide Sensors: An Experimental Investigation” Nondestructive Testing & Evaluation, vol. 13, pp. 227-237, 1997.
  17. Huber, C., H. Abiri, S. Ganchev and R. Zoughi, “Analysis of the Crack Characteristic Signal Using a Generalized Scattering Matrix Representation,” IEEE Transactions on Microwave Theory and Technique, vol. 45, no. 4, pp. 477-484, April, 1997.
  18. Ganchev, S., R. Zoughi, C. Huber, R. Runser and E. Ranu, “Microwave Method for Locating Surface Crack Tips in Metals,” Materials Evaluation, vol. 54, no. 5, pp. 598-603, May, 1996.
  19. Yeh, C. and R. Zoughi, “Sizing Technique for Surface Cracks in Metals,” Materials Evaluation, vol. 53, no. 4, pp. 496-501, April, 1995.
  20. Yeh, C. and R. Zoughi, “Microwave Detection of Finite Surface Cracks in Metals Using Rectangular Waveguide Sensors,” Research in Nondestructive Evaluation, vol. 6, no. 1. pp. 35-55, 1994.
  21. Yeh, C. and R. Zoughi, “A Novel Microwave Method for Detection of Long Surface Cracks in Metals,” IEEE Transactions on Instrumentation and Measurement, vol. 43, no. 5, pp. 719-725, October, 1994.
  22. Yeh, C., E. Ranu and R. Zoughi, “A Novel Microwave Method for Surface Crack Detection Using Higher Order Waveguide Modes,” Materials Evaluation, vol. 52, no. 6, pp. 676-681, June, 1994.

Conference Presentations and Proceedings Papers

  1. Wang, N., K. Donnell, M. Castle, R. Zoughi and M. Novack, “Microwave Detection of Covered Cracks in Metals,” Proceedings of the Twenty-seventh Annual Review of Progress in Quantitative Nondestructive Evaluation, vol. 20A, pp. 430-437, Ames, IA, July 17-21, 2000.
  2. Campbell, H., E. Winkler, N. Qaddoumi, R. Zoughi, D. Raymond, D. Williams and J. Meheen, “Microwave Inspection of Bridge Fatigue Cracks in Railroad Overpass,” Proceedings of the Twenty-seventh Annual Review of Progress in Quantitative Nondestructive Evaluation, vol. 20A, pp. 438-445, Ames, IA, July17-21, 2000.
  3. Wang, Y., N. Qaddoumi, M. Frank, R. Mirshahi, V. Otashevich and R. Zoughi, “Microwave Detection of Machined Notches in Stainless Steel with Rough Surface,” Proceedings of the Twenty-Fifth Annual Review of Progress in Quantitative Nondestructive Evaluation, vol. 18A, pp. 577-583, Snowbird, UT, July 19-24, 1998.
  4. Yeh, C. and R. Zoughi, “A Microwave Method for Detection of Finite Surface Cracks in Metals,” Proceedings of the Fourteenth World Conference on Non Destructive Testing (14th WCNDT), New Delhi, India, December 8-13, 1996.  Awarded the “Best Technical Paper”.