Model benchmark studies are presented for angled-beam inspections of composites to validate the performance of two promising models. However, manual interpretation of the signal response can be quite complicated, even for inspection of side-drilled holes in a thin composite. The use of models is introduced in this paper to guide this complex signal interpretation task. Specifically, wave maps are used to illustrate the complexity of the oblique-angle ultrasound propagation in these layered anisotropic materials. For the two benchmark cases presented, each model provided the closest estimates of location and time of flight return signals for one case or the other, indicating neither model is clearly better for this specific case. In fact, it will be shown that the two models provide complimentary information in the case of angled-beam inspections of composites. Lastly, simulated results from both single and hidden delamination scenarios are studied, and contrasted with side-drilled hole benchmarking results, providing critical insight into optimization of the angle-beam pulse-echo inspection technique for characterizing hidden delaminations from a single side.
Abrate, S., 1998, Impact on Composite Structures, Cambridge University Press, Cambridge.
Aldrin, J.C, J.N. Wertz, J.T. Welter, S. Wallentine, E.A. Lindgren, V. Kramb, and D. Zainey, 2018, “Fundamentals of Angled-Beam Ultrasonic NDE for Potential Characterization of Hidden Regions of Impact Damage in Composites,” AIP Conference Proceedings, Vol. 1949, No. 1.
Babish, C.A., 2008, “USAF ASIP: Protecting Safety for 50 Years,” Aircraft Structural Integrity Program Conference, San Antonio, TX.
Bar-Cohen, Y., and R.L. Crane, 1982a, “Acoustic-Backscattering Imaging of Subcritical Flaws in Composites,” Materials Evaluation, Vol. 40, No. 9, pp. 970–975.
Bar-Cohen, Y., and R. Crane, 1982b, “Nondestructive Evaluation of Fiber-Reinforced Composites with Acoustic Backscattering Measurements,” ASTM International, West Conshohocken, PA.
Boll, D.J., W.D. Bascom, J.C. Weidner and W.J. Murri, 1986, “A Microscopy Study of Impact Damage of Epoxy-Matrix Carbon-Fibre Composites,” Journal of Materials Science, Vol. 21, No. 8, pp. 2667–2677.
Christian, W., E. Patterson, and F. DiazDelaO, 2017, “Robust Empirical Predictions of Residual Performance of Damaged Composites with Quan-tified Uncertainties,” Journal of Nondestructive Evaluation, Vol. 36, doi: 10.1007/s10921-017-0416-6.
Daniel, I.M., and O. Ishai, 2006, Engineering Mechanics of Composite Mate-rials, Oxford University Press, New York, NY.
Flores, M.D., 2016, “Damage Tolerance and Assessment of Unidirectional Carbon Fiber Composites: An Experimental and Numerical Study,” Disser-tation Abstracts International, Vol. 77–11(E), p. 274.
Gosse, J.H., and L.R. Hause, 1988, “A Quantitative Nondestructive Evalua-tion Technique for Assessing the Compression-After-Impact Strength of Composites Plates,” Review of Progress in Quantitative Nondestructive Evalu-ation, Vol. 7b, pp. 1011–1020.
Gosse, J.H., and S.M., Sorscher, 1989, “An Integrated Damage Analysis of Laminated Composite Plates,” Review of Progress in Quantitative Nonde-structive Evaluation, Vol 8, pp. 1651–1655.
Guild, F.J., N. Vrellos, B.W. Drinkwater, N. Balhi, S.L. Ogin, and P.A. Smith, 2006, “Intra-Laminar Cracking in CFRP Laminates: Observations and Modelling,” Journal of Materials Science, Vol. 41, No. 20, pp. 6599–6609.
Homa, L., D. Sparkman, J. Wertz, J. Welter, and J. C. Aldrin, 2018, “Signal Decomposition for Surrogate Modeling of a Constrained Ultrasonic Design Space,” AIP Conference Proceedings, Vol. 1949, No. 1.
Johnston, P.H., C.D. Appleget, and M.T. Odarczenko, 2013, “Characterization of Delaminations and Transverse Matrix Cracks in Composite Lami-nates Using Multiple-Angle Ultrasonic Inspection,” AIP Conference Proceedings, Vol. 1511, No. 1.
Kersemans, M., A. Martens, K. Van Den Abeele, J. Degrieck, L. Pyl, F. Zastavnik, H. Sol, and W. Van Paepegem, 2015, “The Quasi-Harmonic Ultrasonic Polar Scan for Materials Characterization: Experiment and Numerical Modeling,” Ultrasonics, Vol. 58, pp. 111–122.
Kersemans, M., I. De Baere, J. Degrieck, K. Van Den Abeele, L. Pyl, F. Zastavnik, H. Sol, and W. Van Paepegem, 2014a, “Nondestructive Damage Assessment in Fiber Reinforced Composites with the Pulsed Ultrasonic Polar Scan,” Polymer Testing, Vol. 34, pp. 85–96.
Kersemans, M., W. Van Paepegem, B. Lemmens, K. Van Den Abeele, L. Pyl, F. Zastavnik, H. Sol, and J. Degrieck, 2014b, “The Pulsed Ultrasonic Backscatter Polar Scan and its Applications for NDT and Materials Charac-terization,” Experimental Mechanics, Vol. 54, No. 6, pp. 1059–1071.
Kersemans, M., I. De Baere, J. Degrieck, K. Van Den Abeele, L. Pyl, F. Zastavnik, H. Sol, and W. Van Paepegem, 2014c, “Damage Signature of Fatigued Fabric Reinforced Plastics in the Pulsed Ultrasonic Polar Scan,” Experimental Mechanics, Vol. 54, No. 8, pp. 1467–1477.
Lopez-Sanchez, A.L., H.-J. Kim, L.W. Schmerr Jr., and A. Sedov, 2005, “Measurement Models and Scattering Models for Predicting the Ultrasonic Pulse-Echo Response from Side-Drilled Holes,” Journal of Nondestructive Evaluation, Vol. 24, No. 3, pp. 83–96.
Martens, A., M. Kersemans, J. Daemen, E. Verboven, W. Van Paepegem, J. Degrieck, S. Delrue, and K. Van Den Abeele, 2017, “Numerical Study of the Time-of-Flight Pulsed Ultrasonic Polar Scan for the Determination of the Full Elasticity Tensor of Orthotropic Plates,” Composite Structures, Vol. 180, pp. 29–40.
Michaels, J.E., T.E. Michaels, and B. Mi, 2006, “An Ultrasonic Angle Beam Method for in Situ Sizing of Fastener Hole Cracks,” Journal of Nondestruc-tive Evaluation, Vol. 25, No. 1, pp. 2–15.
Mollenhauer, D., E. Iarve, K. Hoos, M. Flores, E. Zhou, E. Lindgren, and G. Schoeppner, 2016, “Damage Tolerance for Life Management of Composite Structures - Part 1: Modeling,” Aircraft Structural Integrity Program Conference, San Antonio, TX.
Reverdy, F., S. Mahaut, N. Dominguez, and P. Dubois, 2015, “Simulation of Ultrasonic Inspection of Curved Composites Using a Hybrid Semi-Analytical/Numerical Code,” AIP Conference Proceedings, Vol. 1650, No.1.
US Department of Defense, 2009, Nondestructive Evaluation System Reliability Assessment, MIL-HDBK-1823A.
Van Dreumel, W.H., and J.L. Speijer, 1981, “Nondestructive Composite Laminate Characterization by Means of Ultrasonic Polar-Scan,” Materials Evaluation, Vol. 39, pp. 922–925.
Welter, J.T., J.N. Wertz, J.C. Aldrin, V. Kramb, and D. Zainey, 2018, “Model-Driven Optimization of Oblique Angle Ultrasonic Inspection Parameters for Delamination Characterization,” AIP Conference Proceedings, Vol. 1949, No. 1.
Wertz, J., L. Homa, D. Sparkman, J. Welter, and J. C. Aldrin, 2018, “Gaussian Process Regression of Chirplet Decomposed Ultrasonic B-scans of a Simulated Design Case,” in Review of Progress in Quantitative Nondestructive Evaluation, AIP Conference Proceedings 1949, 130007-1–130007-9.
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