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SOE - Scholarly Publications: Recent submissions

  • Relating grain size to the Zener–Hollomon parameter for twin-roll-cast AZ31B alloy refined by friction stir processing 
    Ammouri, A.H.; Kridli, G.; Ayoub, G.; Hamade, R.F.; SOE; 201306469; Industrial And Mechanical Engineering; ali.ammouri@lau.edu.lb; Lebanese American University
    An experimentally verified finite element model was used to estimate the strain rate and the temperature values which were, consequently, used in calculating the Zener–Hollomon parameter, Z-parameter, of twin-roll-cast ...
  • 2015 International Wireless Communications and Mobile Computing Conference (IWCMC) 
    Abou-Rjeily, Chadi; Fayad, Karl; SOE; 200701131; Electrical And Computer Engineering; chadi.abourjeily@lau.edu.lb (IEEE, )
    In this paper, we consider the problem of differential space-time (ST) block coding in the context of impulse-radio ultra-wideband (IR-UWB) communications with two transmit antennas and Pulse Position Modulation (PPM). We ...
  • Permutation-Based Noncoherent Space-Time Codes With Analog Energy Detection for IR-UWB Communications With PPM 
    Abou-Rjeily, Chadi; SOE; 200701131; Electrical And Computer Engineering; chadi.abourjeily@lau.edu.lb
    In this paper, we consider the problem of space-time (ST) coding for the noncoherent ultra-wideband (UWB) systems with pulse position modulation (PPM). In particular, we propose the first known family of ST codes that lends ...
  • Impact of inter-relay co-operation on the performance of FSO systems with any number of relays 
    Abou-Rjeily, Chadi; Noun, Zeina; SOE; 200701131; Electrical And Computer Engineering; chadi.abourjeily@lau.edu.lb
    In this paper, we study the impact of inter-relay co-operation on the performance of decode-and-forward (DF) cooperative free space optical (FSO) communication systems with any number of relays. The idea of inter-relay ...
  • Evaluation of transportation network reliability during unexpected events with multiple uncertainties 
    El Khoury, John; Soltani-Sobh, Ali; Heaslip, Kevin; Stevanovic, Aleksandar; Song, Ziqi; SOE; 200103005; Civil Engineering; john.khoury@lau.edu.lb
    Measuring transportation network reliability in destabilizing events is a complex task because an accurate modeling requires the inclusion of uncertainty in both the infrastructure and the users' behavior. This paper ...
  • Simulation of an ITS Crash Prevention Technology at a No-Passing Zone Site 
    El Khoury, John; Hobeika, Antoine; SOE; 200103005; Civil Engineering; john.khoury@lau.edu.lb
    Crashes at no-passing zones constitute a sizable percentage of the total crashes on two-lane rural roads. A no-passing zone site at a crest vertical curve on route 114 of Southwest Virginia has experienced several traffic ...
  • Ionic Polymer Transducers in sensing 
    Akle, Barbar; Weiland, Lisa Mauck; SOE; 200700940; Industrial And Mechanical Engineering; barbar.akle@lau.edu.lb
    Accurate sensing of mechanical strains in civil structures is critical for optimizing structure reliability and lifetime. For instance, combined with intelligent control systems, electromechanical sensor output feedback ...
  • Softening and heating effects in ionic polymer transducers 
    Akle, Barbar J.; Leo, Donald J.; SOE; 200700940; Industrial And Mechanical Engineering; barbar.akle@lau.edu.lb
    This study reports the softening and heating of ionic polymer transducers during actuation. This is the first account of such effects that will impact the understanding of the actuation mechanisms and the physical modeling ...
  • Preparation and properties of nanofibrous Nafion mats for ionic polymer metal composites 
    Akle, B.; Nah, C.; Lee, Y.-S.; Cho, B. H.; Yu, H. C.; Leo, D. J.; SOE; 200700940; Industrial And Mechanical Engineering; barbar.akle@lau.edu.lb
    One of the disadvantages of ionic liquids-saturated ionomeric polymer transducers has been known to be their slower speeds of actuation. In this study, a novel membrane structure of nanofibrous mats-based on a copolymer ...
  • Visual rating and strength testing of 40-year-ld precast prestressed concrete bridge piling 
    Abi Shdid, Caesar; Ansley, Marcus H.; Hamilton III, H.R.; SOE; 199431340; Civil Engineering; caesar.abishdid@lau.edu.lb
    The rating of bridge piles is primarily visual and requires judgment to quantify damage levels and, ultimately, to estimate the pile’s remaining structural capacity. A series of tests was run to evaluate the existing capacity ...
  • Performance of roof tiles under simulated hurricane impact 
    Abishdid, Caesar; Chowdhury, Arindam Gan; Huang, Peng; Mirmiran, Amir; Wang, Ton-Lo; SOE; 199431340; Civil Engineering; caesar.abishdid@lau.edu.lb
    Widespread damage to tile roofs over the last few years, even for weaker hurricanes, has raised concerns regarding construction practices and codes. An experimental study was carried out for clay and concrete roof tiles ...
  • Uplift capacity and impact resistance of roof tiles 
    Abi Shdid, Caesar; Mirmiran, Amir; Wang, Ton-Lo; Jimenez, Diego; Huang, Peng; SOE; 199431340; Civil Engineering; caesar.abishdid@lau.edu.lb
    Roof coverings, particularly barrel tiles, have experienced significant damage over the last few years from storms, even weaker storms such as Category 1 Hurricane Wilma in 2005. Efforts have been made to ban mortar-set ...
  • Air infiltration through building envelopes 
    Abi Shdid, Caesar; Younes, Chadi; SOE; 199431340; Civil Engineering; caesar.abishdid@lau.edu.lb
    Air leakage through the building envelope into the building interiors has a considerable impact on the energy loads and consequently energy demand and energy costs of buildings. This phenomenon known as infiltration happens ...
  • Contribution of the side resistance and tip resistance on the total axial load capacity of drilled shaft foundations 
    Abishdid, Caesar; Hajali, Masood; SOE; 199431340; Civil Engineering; caesar.abishdid@lau.edu.lb
    The main loads applied on the drilled shafts are axial compressive loads. It is important to know how many percent of the maximum applied load will be shed in side friction and how much will be transferred to the base. ...
  • Behavior of axially loaded drilled shaft foundations with symmetric voids outside and inside the caging 
    Abishdid, Caesar; Hajali, Masood; SOE; 199431340; Civil Engineering; caesar.abishdid@lau.edu.lb
    Drilled shaft foundations usually carry very high design loads, and often serve as a single load-carrying unit. These conditions have created a need for a high-level of quality assurance during and after construction ...
  • Comparison between visibility and diffraction criteria on SIF and 𝐽-Integral value for mode 𝐼 crack using RKPM 
    Abishdid, Caesar; Hajali, Masood; Nejadpa, Arash; SOE; 199431340; Civil Engineering; caesar.abishdid@lau.edu.lb
    Recently, mesh-free methods are increasingly utilized in solving various types of boundary value problems. Much research has been done on mesh-free methods for solving differential equation problems including crack and ...
  • Directly Copolymerized Poly(arylene sulfide sulfone) and Poly(arylene ether sulfone) Disulfonated Copolymers for Use in Ionic Polymer Transducers 
    Akle, B. J.; Wiles, K. B.; Hickner, M. A.; Bennett, M.; Leo, D. J.; McGrath, J. E.; SOE; 200700940; Industrial And Mechanical Engineering; barbar.akle@lau.edu.lb
    Polymeric electromechanical transducers were identified and based on various novel ion-exchange membranes bonded between two conductive metal layer electrodes. Imposed deformations and small electric fields allowed both ...
  • A methodology for 3-D multiphysics CFD simulation of air leakage in building envelopes 
    Abi Shdid, Caesar; Younes, Chadi; SOE; 199431340; Civil Engineering; caesar.abishdid@lau.edu.lb
    Air leaks into a building through various openings and cracks in the building envelope. This leakage affects indoor air quality, human comfort and, primarily, building energy consumption. Several experimental studies have ...
  • Electrochemical response in ionic polymer transducers 
    Akle, Barbar J.; Wallmersperger, Thomas; Leo, Donald J.; Kroplin, Bernd; SOE; 200200700940; Industrial And Mechanical Engineering; barbar.akle@lau.edu.lb
    Ionomeric polymer transducers consist of an ion-conducting membrane, usually Nafion or Flemion, sandwiched between two metal electrodes. By applying a low voltage (up to 2 V), a relatively large bending deformation (>5% ...
  • Determination of Two-Dimensional Plastic Zone Shape and SIF at Crack-Tip Using RKPM 
    Abishdid, Caeser; Hajali, Masood; SOE; 199431340; Civil Engineering; caesar.abishdid@lau.edu.lb
    Reproducing kernel particle Method (RKPM) is a meshless technology which has proven very useful for solving problems of elastic-plastic fracture mechanics. The mode I plastic zone shape at the crack-tip in a work-hardening ...

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