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Mechanical Engineering Seminar Series: Astrid Layton

1200 EECS 1301 Beal Ave, Ann Arborr, MI, United States

Inspiration from nature has produced some fascinating, novel, and life changing solutions for the human world. Most of these bio-inspired designs however have been product based, but taking a systems perspective when we look to nature taps inspirations that can improve the critical networks we depend on. This talk focuses on biological ecosystems in particular, complex networks of interacting species that are able to support individual needs while maintaining system-level functions during both times of abundance and unexpected disturbances.

Midwest Mechanics Seminar Series: Dan Henningson

FXB 1109 2505 Hayward St, Ann Arbor, MI, United States

Fluid flows subject to time-dependent external forces or boundary conditions are ubiquitous in aeronautical applications. Whether one considers pitching wings, dynamic stall or the gust response of wind turbines, the flow is unsteady or non-autonomous. We investigate the influence of unsteadiness on the non-linearflow evolution, as well as on the linear response to small disturbances that determines their stability and the subsequent transition to turbulence.

Mechanical Engineering Seminar Series: Matthew Eisaman

1200 EECS 1301 Beal Ave, Ann Arborr, MI, United States

Ocean alkalinity enhancement (OAE) is a specific ocean CDR approach that can locally reverse ocean acidification and draw additional CO2 from the air into oceanic bicarbonate where it is stored for over10,000 years, mimicking the Earth’s natural mechanism for regulating the atmospheric CO2 concentration. In this talk, I will review the latest results from my group on electrochemical ocean alkalinity enhancement and describe the efforts to commercialize this technology at Ebb Carbon, Inc.

ME Seminar Series: David Dunand

1200 EECS 1301 Beal Ave, Ann Arborr, MI, United States

To create metallic scaffolds or microlattices with sub-millimeter strut architectures, we develop a new method, Extrusion 3D-Printing, consisting of two simple steps. First, metal oxide particle suspensions (inks) are extruded, in air and at ambient temperature, into linear struts creating self-supporting lattices. Second, the oxides are hydrogen-reduced to metal and sintered into dense metallic microlattices.

ME Seminar Series: Michael Graham

1200 EECS 1301 Beal Ave, Ann Arborr, MI, United States

Fluid flows often exhibit chaotic or turbulent dynamics and require a large number of degrees of freedom for accurate simulation. Nevertheless, because of the fast damping of small scales by viscosity, these flows can in principle be characterized with a much smaller number of dimensions, as their long-time dynamics relax in state space to a finite-dimensional invariant manifold.

ME Seminar Series: Kripa Varanasi

1200 EECS 1301 Beal Ave, Ann Arborr, MI, United States

Physico-chemical interactions at interfaces are ubiquitous in multiple industries including energy, water, agriculture, medicine, transportation, and consumer products. In this talk, Kripa will summarize how surface/interface chemistry, morphology, thermal, and electrical properties can be engineered across multiple length scales for significant efficiency enhancements in a wide range of processes.

ME Seminar Series: Vikas Srivastava

1200 EECS 1301 Beal Ave, Ann Arborr, MI, United States

Vikas will present his team's theoretical framework and a microstructural physics-motivated constitutive model that describes the nonlinear large strain elastic-viscoplastic material response, rate-dependent stiffening and material state transformation of reversible dynamically crosslinked soft polymers over seven decades of strain rates.

ME Seminar Series: Jennifer Rieser

1200 EECS 1301 Beal Ave, Ann Arborr, MI, United States

The diversity and complexity of natural substrates—from flowable materials like sand and mud to steeply sloped tree branches and trunks with vast differences in flexibility and roughness—present significant challenges for animal movement.

Mechanical Engineering Seminar Series: Neil Lin

2246 CSRB 2455 Hayward St, Ann Arbor, MI, United States

Dr. Neil Lin is an Assistant Professor of Mechanical Engineering and Bioengineering at University of California, Los Angeles (UCLA). This talk explores how basic physics governs cell-to-cell variability in epithelial monolayers and its impact on biological processes.

Mechanical Engineering Seminar Series: Aimy Wissa

2246 CSRB 2455 Hayward St, Ann Arbor, MI, United States

Organisms have evolved various locomotion (self-propulsion) and shape adaptation (morphing) strategies to survive and thrive in diverse and uncertain environments. Unlike engineered systems, which rely heavily on active control, natural systems also rely on reflexive and passive control.

Mechanical Engineering Seminar Series: Matthew Kasemer

1200 EECS 1301 Beal Ave, Ann Arborr, MI, United States

In this study, micromechanical experiments are performed in situ during deformation loading on unirradiated and irradiated samples of a model BCC alloy, Fe-9wt.%Cr, via high-energy X-ray diffraction microscopy.

Mechanical Engineering Seminar Series: Zhigang Suo

1200 EECS 1301 Beal Ave, Ann Arborr, MI, United States

Long polymers inevitably entangle, and do not detangle in a crosslinked network. It is known that the network is stiffened by both crosslinks and entanglements. We have recently discovered that crosslinks and entanglements act differently when the network fractures.