Now showing items 1-20 of 303

    • Stretchable sensors for environmental monitoring 

      Yang, Yang; Deng, Zhiqun Daniel (2019-03)
      The development of flexible and stretchable sensors has been receiving increasing attention in recent years. In particular, stretchable, skin-like, wearable sensors are desirable for a variety of potential applications ...
    • The Role of Disjoining Pressure and Thermal Activation in the Invasion of Droplets into Nanopores 

      Fang, Chao; Kang, Qinjun; Qiao, Rui (2019-03-21)
      Multiphase transport at a nanoscale level plays a key role in applications including drying of nanoporous materials and gas/oil recovery from low permeability rocks. A frequently encountered scenario in multiphase transport ...
    • Cooperative Adaptive Cruise Control With Adaptive Kalman Filter Subject to Temporary Communication Loss 

      Wu, Chaoxian; Lin, Yuan; Eskandarian, Azim (IEEE, 2019)
      Cooperative adaptive cruise control (CACC) communicates the relevant preceding vehicle state data to the follower (ego) vehicle to improve the vehicle following capabilities. In general, the CACC utilizes the preceding ...
    • Diffusion behavior of lanthanide-additive compounds (Ce4Sb3, Ce2Sb, and CeTe) against HT9 and Fe 

      Xie, Yi; Zhang, Jinsuo; Benson, Michael T.; Mariani, Robert D. (2019-04)
      Antimony and tellurium have been identified as promising additives in metallic fuel, which can immobilize free-lanthanide fission products into stable intermetallic compounds in order to mitigate the fuel-cladding chemical ...
    • Over or under? Autonomous sensor fish reveals why overshot weirs may be safer than undershot weirs for fish passage 

      Pflugrath, Brett D.; Boys, Craig A.; Cathers, Bruce; Deng, Zhiqun Daniel (2019-07)
      Many riverine fish species disperse downstream as eggs, juveniles, or adults, which can expose them to injury and death at hydraulic structures. Low-head weirs are one example of a structure that can kill fish, and this ...
    • A Tunable Optical Bragg Grating Filter Based on the Droplet Sagging Effect on a Superhydrophobic Nanopillar Array 

      Zhang, Meng; Liu, Jiansheng; Cheng, Weifeng; Cheng, Jiangtao; Zheng, Zheng (MDPI, 2019-07-29)
      Nanostructures have been widely applied on superhydrophobic surfaces for controlling the wetting states of liquid microdroplets. Many modern optic devices including sensors are also integrated with micro- or nanostructures ...
    • How soap bubbles freeze 

      Ahmadi, S. Farzad; Nath, Saurabh; Kingett, Christian M.; Yue, Pengtao; Boreyko, Jonathan B. (Springer Nature, 2019-06-18)
      Droplets or puddles tend to freeze from the propagation of a single freeze front. In contrast, videographers have shown that as soap bubbles freeze, a plethora of growing ice crystals can swirl around in a beautiful effect ...
    • Uncertainty Quantification for Ti-7Al Alloy Microstructure with an Inverse Analytical Model (AUQLin) 

      Acar, Pınar (MDPI, 2019-05-31)
      The present study addresses an inverse problem for observing the microstructural stochasticity given the variations in the macro-scale material properties by developing an analytical uncertainty quantification (UQ) model ...
    • Comparative Study on Steady and Unsteady Flow in a Centrifugal Compressor Stage 

      Kim, Changhee; Son, Changmin (Hindawi, 2019-06-09)
      Steady Reynolds-averaged Navier-Stokes (RANS) simulation with the mixing-plane approach is the most common procedure to obtain the performance of a centrifugal compressor in an industrial development process. However, the ...
    • Seasonal changes in morphology govern wettability of Katsura leaves 

      Kang, Hosung; Graybill, Philip M.; Fleetwood, Sara; Boreyko, Jonathan B.; Jung, Sunghwan (PLOS, 2018-09-27)
      Deciduous broad-leaf trees survive and prepare for winter by shedding their leaves in fall. During the fall season, a change in a leaf's wettability and its impact on the leaf-fall are not well understood. In this study, ...
    • Shared and Distributed X-in-the-Loop Tests for Automotive Systems: Feasibility Study 

      Schreiber, Viktor; Ivanov, Valentin; Augsburg, Klaus; Noack, Matti; Shyrokau, Barys; Sandu, Corina; Els, Pieter Schalk (IEEE, 2018)
      X-in-the-loop (XIL) technologies are receiving increased attention in modern automotive development processes. In particular, collaborative experiments, such as XIL tools, have efficient applications in the design of ...
    • Delay-Universal Channel Coding With Feedback 

      Noor-A-Rahim, Md; Khyam, M. O.; Guan, Yong Liang; Ali, G. G. Md Nawaz; Nguyen, Khoa D.; Lechner, Gottfried (IEEE, 2018)
      In this paper, the design of error-correcting or channel codes for delay-universal/anytime communication is shown while considering systems with and without a feedback link. We construct practical and low complexity anytime ...
    • Mathematical Strategies for Design Optimization of Multiphase Materials 

      Catania, Rick; Diraz, Abdalla; Maier, Dominic; Tagle, Armani; Acar, Pınar (Hindawi Publishing Corp, 2019-03-12)
      This work addresses various mathematical solution strategies adapted for design optimization of multiphase materials. The goal is to improve the structural performance by optimizing the distribution of multiple phases that ...
    • Accelerometer Based Method for Tire Load and Slip Angle Estimation 

      Singh, Kanwar Bharat; Taheri, Saied (MDPI, 2019-04-28)
      Tire mounted sensors are emerging as a promising technology, capable of providing information about important tire states. This paper presents a survey of the state-of-the-art in the field of smart tire technology, with a ...
    • Momentum, Spring 2019 

      Unknown author (Virginia Tech, 2019)
      This is the Spring 2019 issue of Momentum, the quarterly magazine of the Department of Mechanical Engineering at Virginia Tech. Each issue looks at research, faculty, students, awards and what's going on in the department.
    • Mechanical Engineering 2018 Annual Report 

      Unknown author (Virginia Tech, 2018)
      A comprehensive look at the Virginia Tech Department of Mechanical Engineering and its accomplishments in 2018.
    • Sensor Fusion and State Estimation of IoT Enabled Wind Energy Conversion System 

      Noor-A-Rahim, Md.; Khyam, M. O.; Li, Xinde; Pesch, Dirk (MDPI, 2019-04-01)
      The use of renewable energy has increased dramatically over the past couple of decades. Wind farms, consisting of wind turbines, play a vital role in the generation of renewable energy. For monitoring and maintenance ...
    • Functional compartmentalization in the hemocoel of insects 

      Pendar, Hodjat; Aviles, Jessica; Adjerid, Khaled; Schoenewald, Caroline; Socha, John J. (Springer Nature, 2019-04-15)
      The insect circulatory system contains an open hemocoel, in which the mechanism of hemolymph flow control is ambiguous. As a continuous fluidic structure, this cavity should exhibit pressure changes that propagate quickly. ...
    • Modeling and analysis of a high-displacement pneumatic artificial muscle with integrated sensing 

      Yang, H.D.; Greczek, B.T.; Asbeck, A.T. (Frontiers Media S.A., 2019-01-07)
      We present a high-displacement pneumatic artificial muscle made of textiles or plastics that can include integrated electronics to sense its pressure and displacement. Compared to traditional pneumatic muscle actuators ...
    • Multi-scale computational modeling of lightweight aluminum-lithium alloys 

      Acar, P. (Elsevier Ltd, 2019-03-07)
      The present study addresses the multi-scale computational modeling of a lightweight Aluminum-Lithium (Al-Li) 2070 alloy. The Al-Li alloys display significant anisotropy in material properties because of their strong ...