Ahmed Allam

Ahmed Allam

Assistant Professor

Publications

You can also find my articles on my Google Scholar profile.

  1. A. Allam, H. Patel, C. Sugino, C. Arrington, C. St. John, J. Steinfeldt, A. Erturk, & I. El-Kady, “Portable through-metal ultrasonic power transfer using a dry-coupled detachable transmitter,” under review, IEEE Transactions on Industrial Electronics.
  2. A. Allam, C. Sugino, C. Arrington, C. St. John, J. Steinfeldt, A. Erturk, & I. El-Kady, “System-level DC-to-DC analysis and experiments of ultrasonic power transfer through metallic barriers,” under review, IEEE/ASME Transactions on Mechatronics.

    2022

  3. A. Allam, K. Sabra, and A. Erturk, “Piezoelectric transducer design for simultaneous ultrasonic power transfer and backscatter communication,” Smart Mater. Struct., vol. 31, no. 9, p. 095003, Jul. 2022, doi: 10.1088/1361-665X/ac7b57. (Preprint
  4. A. Allam, O. Alfahmi, H. Patel, C. Sugino, M. Harding, M. Ruzzene, & A. Erturk, “Ultrasonic testing of thick and thin Inconel 625 alloys manufactured by laser powder bed fusion,” Ultrasonics, vol. 125, p. 106780, Sep. 2022, doi: 10.1016/j.ultras.2022.106780. (Full Text)

    2021

  5. A. Allam, C. Sugino, M. Harding, D. P. Bishop, A. Erturk, and M. Ruzzene, “Phased Array Ultrasonic Testing of Inconel 625 Produced by Selective Laser Melting,” ASME Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems, vol. 4, no. 041006, May 2021, doi: 10.1115/1.4050963. (Full Text)
  6. A. Allam, K. Sabra, and A. Erturk, “Sound Energy Harvesting by Leveraging a 3D-Printed Phononic Crystal Lens,” Applied Physics Letters, vol. 118, no. 10, p. 103504, Mar. 2021, doi: 10.1063/5.0030698. (Preprint)

    2020

  7. A. Allam, K. Sabra, and A. Erturk, “3D-Printed Gradient-Index Phononic Crystal Lens for Underwater Acoustic Wave Focusing,” Physical Review Applied, vol. 13, no. 6, p. 064064, Jun. 2020, doi: 10.1103/PhysRevApplied.13.064064. (Full Text)
  8. A. Allam, K. G. Sabra, and A. Erturk, “Aspect Ratio-Dependent Dynamics of Piezoelectric Transducers in Wireless Acoustic Power Transfer,” IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 67, no. 5, pp. 984–996, May 2020, doi: 10.1109/TUFFC.2019.2962711. (Preprint)

    2019

  9. S. Alan, A. Allam, and A. Erturk, “Programmable Mode Conversion and Bandgap Formation for Surface Acoustic Waves Using Piezoelectric Metamaterials,” Applied Physics Letters, vol. 115, no. 9, p. 093502, Aug. 2019, doi: 10.1063/1.5110701. (Preprint)

    2017

  10. A. Allam, A. Elsabbagh, and W. Akl, “Experimental Demonstration of One-Dimensional Active Plate-Type Acoustic Metamaterial with Adaptive Programmable Density,” Journal of Applied Physics, vol. 121, no. 12, p. 125106, Mar. 2017, doi: 10.1063/1.4979020. (Accepted Version)

    2016

  11. A. Allam, A. Elsabbagh, and W. Akl, “Modeling and Design of Two-Dimensional Membrane-type Active Acoustic Metamaterials with Tunable Anisotropic Density,” The Journal of the Acoustical Society of America, vol. 140, no. 5, pp. 3607–3618, Nov. 2016, doi: 10.1121/1.4966627. (Preprint)

Doctoral Dissertation

A. Allam, “Acoustic Power Transfer Leveraging Piezoelectricity and Metamaterials,” Ph.D., Georgia Institute of Technology, Atlanta, GA, 2021. (Full Text)

Masters Thesis

A. Allam, “Wave Propagation Control Using Active Acoustic Metamaterials,” MSc., Ain Shams University, Cairo, 2017. doi: 10.13140/RG.2.2.10935.85924. (Full Text)

Conference Proceedings

  1. A. Allam et al., “Detachable Dry-Coupled Ultrasonic Power Transfer Through Metallic Enclosures,” in 2021 IEEE International Ultrasonics Symposium (IUS), Sep. 2021, pp. 1–3. doi: 10.1109/IUS52206.2021.9593569.
  2. E. Kohtanen, C. Sugino, A. Allam, A. Erturk, and I. El-Kady, “Computational Optimization of Mechanical Energy Transduction (COMET) Toolkit,” in 2021 IEEE International Ultrasonics Symposium (IUS), Sep. 2021, pp. 1–3. doi: 10.1109/IUS52206.2021.9593575.
  3. C. Sugino et al., “Experimental Validation of Crosstalk Minimization in Metallic Barriers with Simultaneous Ultrasonic Power and Data Transfer,” in 2021 IEEE International Ultrasonics Symposium (IUS), Sep. 2021, pp. 1–3. doi: 10.1109/IUS52206.2021.9593351.
  4. A. Allam, K. Sabra, and A. Erturk, “Enhanced Sound Energy Harvesting by Leveraging Gradient-Index Phononic Crystals,” presented at the ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Online, Sep. 2020. doi: 10.1115/SMASIS2020-2411. (Slides)
  5. A. Allam, K. Sabra, and A. Erturk, “Comparison of various models for piezoelectric receivers in wireless acoustic power transfer,” in Active and Passive Smart Structures and Integrated Systems XIII, Denver, Colorado, Mar. 2019, vol. 10967, p. 109670S. doi: 10.1117/12.2515377. (Slides)
  6. A. Allam and T. Elnady, “Characterization of mufflers,” presented at the International congress on acoustics, Buenos Aires, Sep. 2016. Accessed: Sep. 23, 2016. (Available Online) (Slides)

Conference Presentations/Posters

  1. A. Allam, K. Sabra, and A. Erturk, “Double phononic crystal lens-based enhancement of underwater power transfer,” 181st Meeting of the Acoustical Society of America, Seattle, Washington, 29 Nov - 3 Dec 2021.(Slides)
  2. A. Allam, C. Sugino, M. Harding, D. P. Bishop, A. Erturk, and M. Ruzzene, “Ultrasonic Inspection of Additive Manufactured Components,” QNDE 2020, Virtual, Online Conference, 25 -26 Aug 2020. (Slides)
  3. A. Allam, K. Sabra, and A. Erturk, “Controlling Underwater Sound Propagation Using 3D-Printed Phononic Crystals,” 178th Meeting of the Acoustical Society of America, San Diego, California, 2-6 Dec 2019. (Slides)
  4. A. Allam, K. Sabra, and A. Erturk, “Gradient-Index Phononic Crystals for Manipulating Sound in Acoustic Power Transfer Applications,” Phononics 2019, Tucson, Arizona, 3-7 June 2019. (Poster)
  5. S. Alan, A. Allam, and A. Erturk, “Surface Acoustic Wave Manipulation Using Piezoelectric Metamaterials,” Phononics 2019, Tucson, Arizona, 3-7 June 2019.(Poster)