Farhad Farzbod
Associate Professor
Department of Mechanical Engineering
University of Mississippi
Lab info: i-mechanics.com
Youtube Channel:
Brief Professional Bio:
Farhad is an associate professor in the mechanical engineering department of the University of Mississippi (Ole Miss). He joined Ole Miss in the fall of 2015.
Previously, he was a research hardware engineer at Google[x] lab. His work involved modeling and design of various transducers and sensors such as next generation bone conduction transducer. At the [X] labs, they looked into the future technologies for sensors and actuators. He was also an adjunct faculty at the mechanical engineering department of San Jose state university. Before moving to the bay area, he was a Postdoctoral Researcher / Associate Engineer at Idaho National Laboratory (INL), which is one the 16 National Laboratories operated by the United States Department of Energy. He worked in the Energy & Environment Science and Technology Directorate. He was working mainly in the area of modeling hybrid systems by Modelica and other multiphysics software, and experimental material characterization using laser ultrasound.
Farhad’s research experience lies in the general areas of vibrations, mechatronic design, controls and solid mechanics. He has a strong background in analyzing wave propagation in periodic systems, finite element analysis, sensor design, modeling, design of smart materials, controls and ultrasonics.
Farhad received his Ph.D. from the mechanical engineering department at the Georgia Institute of Technology (Georgia Tech). He also got a master degree in mathematics and a master degree in electrical and computer engineering from Georgia Tech, and a master degree in mechanical engineering from the university of Toronto. His undergraduate degree is from the University of Tehran. You can see his resume here.
Research Thrusts
Acoustic Metamaterials
Periodic structures are a type of metamaterial in which the physical properties depend not only on details of the unit cell but also on how unit cells are arranged and interact with each other. These structures have remarkable wave propagation properties, making them suitable materials for acoustic filters and wave beaming (steering and focusing a beam of sound) devices.
Mechatronics: Novel Electromechanical Actuators
We have been working on various actuators using liquid metals. We have developed multiple actuators for valveless pumps, omnidirectional speakers, and breathing mode motors. We have published a journal paper about the breathing mode motor in an ASME journal and a paper for valveless pump in an ASME proceedings. This is a promising area for bio applications. Because it is valveless and we believe it is scalable for microfluidic. We have tried to scale it down since a year ago, and it is an ongoing project. The other
actuator that was the focus of our group was high-band-width, low-loss electroactive polymers and polymers with graphene layers. This work is a collaboration between three departments of Civil, Chemical and Mechanical
Engineering.
Material Characterization Using Resonant Ultrasound Spectroscopy
Resonance ultrasound spectroscopy (RUS) is a non-destructive technique for evaluating elastic and an-elastic material properties. RUS is especially an important method to measure the properties of an anisotropic material. The frequencies of free vibrations for a carefully crafted sample are measured, and material properties can be extracted from this. However, there are still issues with the sensitivity of this method. In one popular application, the determination of monocrystal elasticity, the results are not always reliable. In some cases, the resonant frequencies are insensitive to changes in certain elastic constants or their linear combinations. There has been increased interest in hypersonic aerospace vehicles. Building such vehicles usually requires ultrahigh-temperature ceramics (UHTC) capable of handling high temperatures while maintaining their structural integrity in leading-edge and nozzle components. Ultrahigh-temperature ceramics have applications in gas turbines as well. Understanding the properties of these structural materials is critical for the design and life cycle of parts in many of the applications mentioned above. An example of applying this understanding, where far more accurate results are desired than previously, is next-generation fleet management of gas turbine engines. Via the digital twin initiative, gas turbine engines industries have been intrigued by the possibility of virtual inspection and fleet management. To use digital twin concepts, i.e., part-specific virtual representation of engine systems, exact spatial material properties must be determined for specific components. Virtual inspection and modeling are also desired for components space vehicles with re-usable atmospheric re-entry capabilities. One of the main features of these structural ceramics is their elastic and anelastic properties.
...And Other Works
There are other yet to be published work being done in our lab.
Teaching
Syllabus of each course that has been taught by me can be found below (by clicking on the course name). There is a website for the Mechatronics course: i-mechatronics.com. A few educational videos are posted on my youtube channel: youtube.com/farzbod
Publications
Patents
- F. Farzbod, J. Dong, “Adaptive piezoelectric array for bone conduction receiver in wearable computers,” US Patent #: 9547175
- F. Farzbod, M.K. Morishita; J. Dong; R. Herr, “Microphone Arranged in Cavity for Enhanced Voice Isolation ,” US Patent #: 9596536
Published Journals
- F. Farzbod and C. Holycross, “Asymptotic Behavior of Resonant Frequencies in Resonant Ultrasound Spectroscopy,” The Journal of the Acoustical Society of America, 154 (3), pp. 1945-1953, 2023.
- S. Pathak, G. Dangi, and F. Farzbod, “Periodic Structure with Electrostatic Forces: Interactions Beyond the Nearest Neighbor,” Journal of Vibration and Control, https://doi.org/10.1177/10775463231184009, 2023.
- C. Sevigney, O. Scott-Emuakpor, and F. Farzbod, “Resonant Ultrasound Spectroscopy: Sensitivity Analysis for Anisotropic Materials with Hexagonal Symmetry,” Journal of Vibration and Acoustics-Transactions of the ASME, 144(3), 2022.
- F. Farzbod and O. Scott-Emuakpor, “Interactions beyond nearest neighbors in a periodic structure: Force analysis,” International Journal of Solids and Structures, 199, pp. 203-211, 2020.
- F. Farzbod and O. Scott-Emuakpor, “Resonant Ultrasound Spectroscopy: Sensitivity Analysis for Isotropic Materials and Anisotropic Materials with Cubic Symmetry,” Journal of Vibration and Acoustics-Transactions of the ASME, 141(2), 2019.
- F. Farzbod, M. Naghdi and P.M. Goggans, “Using Liquid Metal in an Electromechanical Motor with Breathing Mode Motion,” Journal of Vibration and Acoustics-Transactions of the ASME, 141(1), 2019.
- M. Naghdi, F. Farzbod, “Acoustic Nonreciprocity in Coriolis Mean Flow Systems,” The Journal of the Acoustical Society of America, 143 (1), 230-236, 2018.
- F. Farzbod, “Number of Wavevectors for Each Frequency in Dispersion Curves of a Periodic Structure,” Journal of Vibration and Acoustics-Transactions of the ASME, 139(5), 2017.
- F. Farzbod, “Resonant Ultrasound Spectroscopy for a Sample with Cantilever Boundary Condition Using Rayleigh-Ritz Method,” Journal of Applied Physics, 114(2), 2013.
- J. Reese, Z. N. Utegulov, F. Farzbod, R. S. Schley, and D. H. Hurley, “Examination of the epicentral waveform for laser ultrasound in the melting regime,” Ultrasonics, 53 (3), 2013.
- F. Farzbod and D. H. Hurley, “Resonant Ultrasound Spectroscopy: Using Eigenmodes to Perform the Inverse Problem Associated with Resonant Ultrasound Spectroscopy,” IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 59(11), 2012. this paper was featured on the cover: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6343259
- H. Hurley; S. J. Reese; F. Farzbod, “Application of Laser-based Resonant Ultrasound Spectroscopy to Study Texture in Copper,” Journal of Applied Physics, 111(5), 2012.
- F. Farzbod and M.J. Leamy, “Analysis of Bloch’s Method in Structures with Energy Dissipation,” Journal of Vibration and Acoustics, 133(5), 2011.
- F. Farzbod and M.J. Leamy, “Analysis of Bloch’s Method and the Propagation Technique in Periodic Structures,” Journal of Vibration and Acoustics, 133(3), 2011.
- F. Farzbod and M.J. Leamy, “The Treatment of Forces in Bloch Analysis,” Journal of Sound and Vibration, 325(3), 2009.
Refereed Conference Papers
- Goggans, F. Farzbod, M. Naghdi, and D. Waddell1, “Design of a Novel Electrodynamic Vibrotactile Stimulator for Use in MRI,” 2017 Biomedical Engineering Society Annual Meeting, Phoenix, Arizona, 2017.
- F. Farzbod, MJ Leamy, “Breaking time reversal symmetry with Coriolis mean flow systems,” Invited talk, The Journal of the Acoustical Society of America, 140 (4), 3048-3048, 2016.
- N. Utegulov, F. Farzbod, S. J. Reese, R. S. Schley, and D. H. Hurley,“Localized detection of phase transformation in tungsten using laser ultrasonics,” 18th Symposium on Thermophysical Properties, Boulder, Colorado, June 24 – 29, 2012.
- Hurley, S. Reese, F. Farzbod, R. Kennedy, “Characterization of High Temperature Mechanical Properties Using Laser Ultrasound”, International High Power Laser Ablation Conference, Santa Fe, NM, Apr.30-May 4, 2012.
- F. Farzbod, S. Reese, D. H. Hurley, “Investigating Internal Friction with Laser Resonant Ultrasound Spectroscopy,” ASME International Mechanical Engineering Congress and Exposition, Denver, Colorado, Nov. 11-17, 2011.
- F. Farzbod, D. H. Hurley, “Measuring Crystal Orientation by Resonant Ultrasound Spectroscopy,” IEEE International Ultrasonics Symposium, Orlando, Florida, Oct. 18-21, 2011.
- F. Farzbod and M.J. Leamy, “Analysis of Bloch’s Method in Structures with Energy Dissipation: 1-D structures”, ASME 2010 International Mechanical Engineering Congress & Exposition, Vancouver, BC, Nov 12-18, 2010.
- J. Leamy and F. Farzbod, “Multi-Scale Finite Element-Based Phonon Dispersion Calculations: Approach and Application to Carbon Nanotubes,” 10th U.S. National Congress for Computational Mechanics, Columbus, OH, July 16-19, 2009.
- Jastrzebski, T. Dusatko, F. Farzbod and A.N. Sinclair “Enhancement OF Synthetic Aperture Focusing Technique (SAFT) by Advanced Signal Processing,” World Conference on NDT, Montreal, Canada, Aug 30 – Sep 3, 2004.
- Honarvar, T. Dusatko, Y. Fan, F. Farzbod, M. Moles and A. Sinclair “A novel signal processing technique for enhancement of time-of-flight diffraction (TOEFD) signals,” International Chemical and Petroleum Industry Inspection Technology (ICPIIT) VIII conference. Houston, 18-21 June 2003
Contact Me
Address:
1764 University Circle,
Room 203
University, MS 38677
farzbod@olemiss.edu