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TRACK PLENARY
Track 1: Acoustics, Vibration, and Phononics Track 2: Advanced Manufacturing
1-13-1: ACOUSTICS, VIBRATION, AND PHONONICS 2-1: ADVANCED MANUFACTURING PLENARY
PLENARY Wednesday, November 14, 9:00am–9:45am
Tuesday, November 13, 8:00am–8:45am Room 305, David L. Lawrence Convention Center
Room 305, David L. Lawrence Convention Center Manufacturing for X
(IMECE2018-90091)
Active Acoustic Metamaterials
(IMECE2018-90090) Jian Cao
Northwestern University
Amr Baz
University of Maryland, College Park Abstract: The future of manufacturing is envisioned to be a
mixture of customized manufacturing and concentrated
Abstract: A class of active acoustic metamaterials (AAMM) is manufacturing. To enable the versatility of manufacturing
developed with desirable controlled distributions of effective processes and to fully integrate design and manufacturing for
dynamic properties or intensity of wave propagation. The system optimization, at the Advanced Manufacturing
proposed AAMM consists of an array of acoustic cavities Processes Laboratory of Northwestern, research efforts are
separated by piezoelectric boundaries and arranged to form rooted in discovering new processes and enhancing the
acoustic waveguides. The flexible piezoelectric boundaries are predictability of manufacturing processes using the ICME
controlled to generate desirable acoustic properties or wave (integrated computational materials engineering) approach.
energy distribution along the wave guide in an attempt to This talk will provide an overview about those activities and
develop acoustic cloaks or non-reciprocal diodes. Robust then focus on selective processes and their fundamentals,
control strategies are formulated to achieve the desirable which may include metal-based powder-blown additive
closed-loop control characteristics of this class of acoustic manufacturing, laser processes for surface texturing,
metamaterials while rejecting the effect the external wave electrospinning, dieless sheet forming, carbon-fiber reinforced
pressure disturbances. The time response characteristics of composites forming, etc.
the AAMM are investigated and presented for various
parameters of the robust controllers in order to demonstrate Bio: Dr. Jian Cao (MIT’95, MIT’92, SJTU’89)
the merits of the proposed controllers. Applications of the is the Cardiss Collins Professor, Director of
proposed work are outlined, ranging from exterior and interior Northwestern Initiative for Manufacturing
acoustic cloaks to non-reciprocal switching acoustic Science and Innovation, and an Associate
metamaterials. Vice President for Research (AVPR) at
Northwestern University. She was at the
Bio: Dr. Amr Baz is a Minta Martin Professor of National Science Foundation as a program director for two
Mechanical Engineering and the Director of years. Professor Cao is an elected Fellow of ASME, SME, and
the Smart Materials and Structures Research the International Academy for Production Engineering (CIRP).
Center at the University of Maryland, College Her major awards include the Charles Russ Richards Memorial
Park. He holds a B.Sc.’66 from Cairo Award (2017) from ASME and Pi Tau Sigma, SME Frederick W.
University, as well as M.Sc.’70 and Ph.D.’73 Taylor Research Medal (2016), ASME Blackall Machine Tool
from the University of Wisconsin, Madison. Dr. Baz’s research and Gage Award (2012, 2018), ASME Young Investigator Award
interests span the areas of active and passive control of (2006) from ASME Division of Applied Mechanics, and NSF
vibration and noise using smart structures, constrained layer CAREER Award. Prof. Cao is the Editor-in-Chief of Journal of
damping treatments to control sound radiation in structures, as Materials Processing Technology. She served as President of
well as active acoustic metamaterials. Dr. Baz has published the SME North America Manufacturing Research Institute and
more than 150 archival journal papers, seven book chapters, Chair of ASME Manufacturing Engineering Division. She is a
and holds nine US patents. He is a Fellow of the American recipient of the ASME Dedicated Service Award (2011). As an
Society of Mechanical Engineers and a recipient of Egypt’s AVPR, Prof. Cao fosters the collaboration between the physical
Presidential Award & First Class Medal for Best Achievements sciences and engineering and the other disciplines across and
in Science and Arts. Dr. Baz received the ASME Adaptive beyond Northwestern. She is a Board member of mHUB,
Structures and Material Systems Prize (2009), the Pi-Tau- Chicago's first innovation center focused on physical product
Sigma Purple Cam-Shaft Teaching Award (2009), the SPIE development and manufacturing.
Smart Structures Lifetime Achievement Award (2011), the
xxxiv Poole and Kent Teaching Award (2015), as well as the
Distinguished Scholar award from UMD (2015). He serves on
the editorial boards of the following journals: Journal of
Vibration and Control, Smart Structures and Systems, and
Mechanics of Advanced Materials and Structures. He also
served as Chairman of the ASME National Capital Chapter
(1990–1991), Member of ASME Edwin Church Medal Award
(1993–2002), and Chair and Co-Chair of the SPIE Smart
Structures and Integrated Systems Conference (2002–2003).
