Acoustic metamaterials and additive manufacturing
Department of Materials Science & Engineering
Tuesday February 11, 2020
9:45 – 10:45AM ~ Ferris Hall 502
Please join us for refreshments at 9:40
"Acoustic metamaterials and additive manufacturing"
Speaker: Dr. Michael R. Haberman, Assistant Professor
Walker Department of Mechanical Engineering
The University of Texas-Austin, TX
Acoustic metamaterials (AMM) have captured the attention of a wide range of researchers for their potential to create materials with properties or functionalities that exceed those of naturally occurring materials or conventional composites. Progress in acoustic metamaterials is largely the product of a combination of technological advances that have been made in the past three decades. Indeed, AMM research is a prototypical example of novel concepts in physics converging with advances in technology, primarily additive manufacturing and widespread access to robust computational tools. Additive manufacturing is a key component to this area of research since it allows for rapid build and test cycles as well as the production of elaborate structures for acoustic wave manipulation, all of which follow from rigorous mathematical predictions. This talk will highlight physical concepts central to AMM research and the role that advanced manufacturing processes play in present and future research. It will then show results of the design and acoustic characterization of an underwater AMM material known as a pentamode material that is fabricated from sintered titanium. The talk concludes with a discussion of some technical challenges that must be overcome if AMM are to be brought to their full potential including build resolution and repeatability as well as the need to fabricate structures with geometry that spans orders of magnitude in length scale.
Dr. Haberman is an Assistant Professor in the Walker Department of Mechanical Engineering at the University of Texas (UT) at Austin with a joint appointment at the Applied Research Laboratories UT Austin. He received his Ph.D. and Master of Science degrees in Mechanical Engineering from the Georgia Institute of Technology in 2007 and 2001, respectively, and received a Diplôme de Doctorat in Engineering Mechanics from the Université de Lorraine in Metz, France in 2006. His undergraduate work in Mechanical Engineering was done at the University of Idaho, where he received a B.S. in 2000. Dr. Haberman's research interests are centered on elastic and acoustic wave propagation in complex media, acoustic metamaterials, new acoustic transduction materials, ultrasonic nondestructive testing, and vibro-acoustic transducers. He has worked extensively on the modeling and characterization of composite materials and the multi-objective design of acoustical materials. His current research focuses on modeling, design, and testing of composite materials, metamaterials, and structures for applications areas that include the absorption and isolation of acoustical, vibrational, and impulsive energy using negative stiffness structures, acoustic cloaking, and non-reciprocal acoustic and elastic wave phenomena.
Faculty Host: Dr. Bin Hu
Tuesday, February 11 at 9:45am to 10:45am
Ferris Hall, 502
1508 Middle Drive, Knoxville, TN 37996