Author: blackledge.3

>> Dapino gives plenary presentation at IWPMA 2024 in Hanover, Germany

Prof. Marcelo Dapino was a plenary presenter at the 21st International Workshop on Piezoelectric Materials and Applications, held in Hanover, Germany, from July 22nd 2024 until July 26th 2024. The presentation, titled “Piezoelectric-based additive manufacturing for functionalization and multi-material integration of lightweight vehicle structures,” discussed power ultrasonics for solid-state welding of multi-material structures. Work done by SMSL students and researchers leads the investigation of Ultrasonic Additive Manufacturing (UAM), a form of ultrasonic solid-state welding, in the lightweighting of vehicle structures.

More details on UAM can be found here.

IWPMA is a well-established meeting that brings together experts in piezoelectric materials and their applications. It has attracted more than 100 participants each year since its inception in 2004. The conference alternates sites between Europe, East Asia, and the United States.

>> “Ultrasonic additive manufacturing: microstructural and mechanical characterization” published in Wiley-VCH book

A book chapter titled “Ultrasonic Additive Manufacturing: Microstructural and Mechanical Characterization” authored by Tyler Han, Leon Headings, and Marcelo Dapino has been published in “Solid-State Metal Additive Manufacturing Processes, Mechanical Properties, and Applications,” edited by H.Z. Yu, N. Tuncer, and Z. Feng, and published by Wiley-VCH.

HAN, L.M. Headings, and M.J. Dapino, “Ultrasonic additive manufacturing: materials innovations,” Chapter 11 in Solid-State Metal Additive Manufacturing Processes, Mechanical Properties, and Applications, Eds.: H.Z. Yu, N. Tuncer, Z. Feng, Wiley-VCH, ISBN: 978-3-527-35093-3, June 2024. https://doi.org/10.1002/9783527839353

>> “Magnetostrictive materials for tunable fluid pumps” published in Proceedings of SPIE Smart Structures and Materials + NDE 2024

Abstract

This paper compares the magnetostrictive properties of Metglas and Galfenol and investigates their potential as substrate materials for diaphragms to tune the performance of piezoelectric diaphragm pumps. These pumps are found in medical, automotive, and aerospace applications. Conventional diaphragm pumps consist of a vibrating diaphragm actuated by a piezoelectric wafer affixed to a rigid substrate; operating in bending mode, the diaphragm propels a specific volume of fluid across a defined space. Pump designs generally represent a trade-off between maximum output pressure and maximum flow rate. In this paper, we propose two well-established magnetostrictive materials, Metglas and Galfenol, as alternatives to conventional passive substrates to actively modulate pump characteristics such as pressure and flow rate. We experimentally characterize the Delta-E effects of Metglas and Galfenol to verify their stiffness tunability in response to magnetic fields. We develop COMSOL finite element models to simulate the performance of a commercial piezoelectric pump with and without the addition of active substrate materials. Finally, we investigate the potential for tuning the performance of diaphragm pumps with magnetostrictive substrates. This concept can enhance the efficiency of pumping mechanisms, allowing for adaptable performance across a range of specifications.
M. M. KHATTAK, A. W. Dolph, L. M. Headings, and M. J. Dapino “Magnetostrictive materials for tunable fluid pumps”, Proc. SPIE 12947, Behavior and Mechanics of Multifunctional Materials XVIII, 129470G (9 May 2024); https://doi.org/10.1117/12.3014281

>> Dapino appointed to ASME Committee on Honors

Prof. Marcelo Dapino was appointed to serve as a member-at-large on the Committee on Honors of the American Society of Mechanical Engineers (ASME).  The appointment, announced by ASME President Thomas R. Kurfess, extends from January 2024 to June 2027.

Each year, the ASME Committee on Honors confers awards to over 65 individuals, recognizing meritorious contributions to mechanical engineering. The Committee consists of nine Members or Fellows, which typically includes a past president and two honorary members or ASME medalists.

In addition to this appointment, Dapino’s most recent recognition is receiving the ASME Dedicated Service Award formally presented at the ASME Smart Materials, Adaptive Structures, and Intelligent Systems (SMASIS) Conference held in Austin, Texas on September 11-13, 2023. Prof. Dapino is a Fellow of ASME.