Browsing by Author "Gunduz, I. E."

Now showing items 1-18 of 18

    • Article  

      Bimetallic diffusion modeling and temperature regulation during ball milling 

      Aureli, Matteo; Doumanidis, Constantine C.; Gunduz, I. E.; Hussien, Aseel Gamal Suliman; Liao, Yiliang; Kostoglou, Nikolaos; Rebholz, Claus; Doumanidis, Charalabos C. (2018)
      This work establishes a computationally efficient model of temperature and diffusion dynamics in ball milled bimetallic Ni-Al particulates. Mechanical contact conditions between adjacent bimetallic domains and temperature ...
    • Article  

      Brownian-like kinematics of ball milling for particulate structural modeling 

      Doumanidis, C. C.; Kaabi, H. A. Al; Alzaabi, A. S. M.; Gunduz, I. E.; Rebholz, Claus; Doumanidis, C. C. (2016)
      Ball milling motion has been previously studied through computationally expensive, off-line experimental video processing and numerical simulations by the discrete element method. This research establishes a more efficient ...
    • Article  

      Exothermic reaction characteristics of continuously ball-milled Al/Ni powder compacts 

      Hadjiafxenti, A.; Gunduz, I. E.; Kyratsi, Theodora; Doumanidis, C. C.; Rebholz, Claus (2013)
      Self-propagating reactions in compacted pellets of continuously low-energy ball-milled aluminium (Al) and nickel (Ni) powders at a composition corresponding to AlNi3 were investigated. The formation of a bi-modal structure ...
    • Article  

      Fabrication, characterization and applications of novel nanoheater structures 

      Gu, Z.; Cui, Q.; Chen, J.; Buckley, J.; Ando, T.; Erdeniz, D.; Wong, P.; Hadjiafxenti, A.; Epaminonda, P.; Gunduz, I. E.; Rebholz, Claus; Doumanidis, C. C. (2013)
      Nanoheaters are reactive nanostructures that can generate localized heat through controlled ignition. Besides the widely used nanofoil structure with multiple alternative Al-Ni layers, various new nanostructures have been ...
    • Article  

      Full length article: Mechanics and energetics modeling of ball-milled metal foil and particle structures 

      Aureli, Matteo; Doumanidis, C. C.; Gunduz, I. E.; Hussien, Aseel Gamal Suliman; Liao, Yiliang; Rebholz, Claus; Doumanidis, C. C. (2017)
      The reported research establishes a semi-analytical computational predictive model of fractal microstructure in ball-milled metal foils and powder particulates, with emphasis on its transformation mechanics via an energy-based ...
    • Article  

      The influence of structure on thermal behavior of reactive Al–Ni powder mixtures formed by ball milling 

      Hadjiafxenti, A.; Gunduz, I. E.; Tsotsos, C.; Kyratsi, Theodora; Aouadi, S. M.; Doumanidis, C. C.; Rebholz, Claus (2010)
      Ball milling (BM) was used to produce reactive Al–Ni powder mixtures that exhibit self-propagating exothermic reactions (SPER) for nano–micro heater applications. Powders with an Al–Ni molar ratio of 1:3 were milled, cold ...
    • Article  

      Mechanics and energetics modeling of ball-milled metal foil and particle structures 

      Aureli, M.; Doumanidis, C. C.; Gunduz, I. E.; Hussien, A. G. S.; Liao, Y.; Rebholz, Claus; Doumanidis, C. C. (2017)
      The reported research establishes a semi-analytical computational predictive model of fractal microstructure in ball-milled metal foils and powder particulates, with emphasis on its transformation mechanics via an energy-based ...
    • Conference Object  

      Mechanics Science-Enabled Nanoheater Multi-Layer Materials Manufactured by Ball Milling 

      Farzanah, K. H. H.; Hassan, M. O. M.; Muhairi, R. A. S. Al; Rebholz, Claus; Gunduz, I. E.; Doumanidis, C. C. (Materials Research Society, 2017)
      This article reports investigation of the effects of high-rate stochastic micro-mechanics on the produced particulate size distribution during ball milling of reactive bimetallic foils (nanoheaters), by experimental and ...
    • Article  

      Miniature thermal matches: From nanoheaters to reactive fractals 

      Rebholz, Claus; Gunduz, I. E.; Ando, T.; Doumanidis, C. C. (2015)
      Fine thermal actuation by miniature heat sources enables applications from electronics fabrication to tumor cauterization. This paper introduces the concept of nanoheaters, i.e., reactive bimetallic material dots (0D), ...
    • Article  

      Modeling of the self-propagating reactions of nickel and aluminum multilayered foils 

      Gunduz, I. E.; Fadenberger, K.; Kokonou, M.; Rebholz, Claus; Doumanidis, C. C.; Ando, T. (2009)
      In this study, we performed simulations of self-propagating reactions of nanoscale nickel-aluminum multilayers using numerical methods. The model employs two-dimensional heat transfer equations coupled with heat generation ...
    • Article  

      Non-equilibrium microscale thermomechanical modeling of bimetallic particulate fractal structures during ball milling fabrication 

      Aureli, M.; Doumanidis, C. C.; Gunduz, I. E.; Hussien, A. G. S.; Liao, Y.; Jaffar, S. M.; Rebholz, Claus; Doumanidis, C. C. (2017)
      Nanostructured bimetallic reactive multilayers can be conveniently produced by ball milling of elemental powders. This research explores the non-equilibrium microscale conductive thermal transport in ball-milled particulate ...
    • Article  

      Numerical modeling of self-propagating reactions in Ru/Al nanoscale multilayer foils 

      Mücklich, F.; Woll, K.; Gunduz, I. E.; Pauly, C.; Doumanidis, C. C.; Son, S. F.; Rebholz, Claus (2015)
      The Ru/Al system integrates high energy density and high product ductility and serves as an alternative for utilization as nanoscale reactive multilayer. We present a modeling study that relates the Ru-Al phase transformations ...
    • Article  

      Reactive bimetallic Al/Ni nanostructures for nanoscale heating applications fabricated using a porous alumina template 

      Kokonou, M.; Giannakopoulos, K. P.; Gunduz, I. E.; Fadenberger, K.; Rebholz, Claus; Doumanidis, C. C. (2009)
      Porous alumina templates are attracting increasing attention for the growth of nanowires and nanodots. We demonstrate here the fabrication of reactive bimetallic nanoporous Al/Ni films and Al/Ni nanorods by electron gun ...
    • Article  

      Real-Time Computational Model of Ball-Milled Fractal Structures 

      Doumanidis, C. C.; Gunduz, I. E.; Rebholz, Claus; Doumanidis, C. C. (2015)
    • Article  

      Simulations of nanoscale Ni/Al multilayer foils with intermediate Ni2Al3 growth 

      Gunduz, I. E.; Onel, S.; Doumanidis, C. C.; Rebholz, Claus; Son, S. F. (2015)
      Nanoscale multilayers of binary metallic systems, such as nickel/aluminum, exhibit self-propagating exothermic reactions due to the high formation enthalpy of the intermetallic compounds. Most of the previous modeling ...
    • Article  

      Spark ignitable ball milled powders of Al and Ni at NiAl composition 

      Hadjiafxenti, A.; Gunduz, I. E.; Doumanidis, C. C.; Rebholz, Claus (2014)
      Low-energy ball milling of aluminum and nickel particles with an overall composition corresponding to the NiAl intermetallic phase was performed up to milling durations of 13 h. The milled powders and cold-compacted pellets ...
    • Article  

      Spark ignitable Ni-Al ball-milled powders for bonding applications 

      Gunduz, I. E.; Kyriakou, A.; Vlachos, N.; Kyratsi, Theodora; Doumanidis, C. C.; Son, S.; Rebholz, Claus (2014)
      Ball milling of aluminum (Al) and nickel (Ni) particles at the NiAl composition can produce reactive powders with low spark ignition thresholds similar to magnetron sputtered multilayer foils (MFs). Such powders can replace ...
    • Article  

      Thermostructural observation and adaptive control of fractal structure in ball-milled materials 

      Aureli, Matteo; Alzaabi, Abdelaziz Saeed Mohamed; Hussien, Aseel Gamal Suliman; Doumanidis, Constantine C.; Jaffar, Syed Murtaza; Gunduz, I. E.; Rebholz, Claus; Kostoglou, Nikolaos; Liao, Yiliang; Doumanidis, Charalabos C. (2018)
      This research introduces dynamic modeling and real-time control of fractal structure in particulate materials fabricated by the ball milling process, specifically addressing challenges of unavailable real-time non-destructive ...