Now showing items 43-53 of 53

    • Performance evaluation of child safety seats in far-side lateral sled tests at varying speeds 

      Ghati, Yoganand; Menon, Rajiv A.; Milone, Mary; Lankarani, Hamid M.; Olivares, Gerardo (Association for the Advancement of Automotive Medicine, 2009-10-05)
      Protection of children in Child Safety Seats (CSS) in side impact crashes has been a topic of recent studies. The objective of this study was to evaluate the performance of CSS in far-side impacts through a series of sled ...
    • Progressive damage and failure analysis of bonded composite joints at high energy dynamic impacts 

      Bhasin, Akhil; Keshavanarayana, Suresh R.; Gomez Valbuena, Luis M.; Kona Ravi, Aswini; Justusson, Brian P.; Olivares, Gerardo (DEStech Publications, 2019-09)
      Both wing and fuselage structures utilize bonded composite joints for structural efficiency in modern commercial and military aircraft. To ensure compliance with certification requirements mechanical fasteners are typically ...
    • Progressive damage and failure prediction of interlaminar tensile specimen with initial fabrication induced defects 

      Cui, Xiaodong; Karuppiah, Anand Vijay; Pham, Dinh Chi; Lua, Jim Y.; Saathoff, Caleb; Seneviratne, Waruna P. (DEStech Publications Inc., 2018)
      An automatic solution process to evaluate the effects of fabrication induced defects in composite components is developed. The framework of this approach includes defects extraction from the X-ray computed tomography (CT) ...
    • Progressive damage mechanisms in thick 3D composites structures under static and fatigue loading 

      Rao, Prabhakar M.; Gurvich, Mark R.; Waas, Nalinda W.; Palliyaguru, Upul R.; Seneviratne, Waruna P. (DEStech Publications, 2020-09)
      The objective of this work is to demonstrate validation of predictive capabilities capturing both damage initiation and growth under static and fatigue loading in geometrically complex three-dimensional (3D) composite ...
    • Reduced allowable strength of composite laminate for unknown distribution due to limited tests 

      Zhang, Yiming; Kim, Namho; Palliyaguru, Upul R.; Schutte, Jaco F.; Haftka, Raphael T. (SAGE Publications, 2020-02-06)
      In design under uncertainty, random distributions are often determined by expensive sampling tests. A key question is whether to invest in more samples or live with a reduced performance by fewer samples due to large ...
    • Refill Friction Stir Spot Joining for aerospace aluminum alloys 

      Boldsaikhan, Enkhsaikhan; Fukada, Shintaro; Fujimoto, Mitsuo; Kamimuki, Kenichi; Okada, Hideki; Duncan, Brent; Bui, Phuonghanh; Yeshiambel, Michael; Brown, Brian M.; Handyside, Alan Bruce (Springer, 2017)
      Refill Friction Stir Spot Joining (RFSJ) developed by Kawasaki Heavy Industries (KHI) is a derivative technology of friction stir spot welding for joining aerospace aluminum alloys. The aerospace aluminum alloys were ...
    • Refill friction stir spot welding of surface-treated aerospace aluminum alloys with faying-surface sealant 

      Boldsaikhan, Enkhsaikhan; Fukada, Shintaro; Fujimoto, Mitsuo; Kamimuki, Kenichi; Okada, Hideki (Elsevier, 2019-06)
      Refill friction stir spot welding (RFSSW) is a derivative of friction stir spot welding (FSSW). Unlike conventional FSSW, it does not leave behind an exit hole in the workpiece. Kawasaki Heavy Industries (KHI) developed a ...
    • SIMULIA Abaqus simulations to predict compression-after-impact behavior 

      Krishnan, Arun; Perera, Shenal; Seneviratne, Waruna P. (DEStech Publications, 2019-09)
      Fiber-reinforced composites are receiving increased attention due to their superior mechanical properties compared to traditional materials. Since composites are made of multiple components, their failure mechanisms are ...
    • Skin/stringer interface damage characterization of stiffened composite structures 

      Seneviratne, Waruna P.; Saseendran, Vishnu; Shafie, Mohamed Z.; Tomblin, John S. (DEStech Publications, 2021-09-01)
      With stiffened composite panels being widely used in aerostructures, critical failure mechanics of the skin/stringer interface need to be thoroughly understood. The interface is design critical and must demonstrate the ...
    • SPH -- Lagrangian study of bird impact on leading edge wing 

      Guida, M.; Marulo, F.; Meo, M.; Grimaldi, A.; Olivares, Gerardo (Elsevier, 2011-02)
      Results from the experimental tests are given so that they can be used to validate numerical models and promote the use of the numerical tools in aircraft design and certification process. The explicit finite element ...
    • The use of neural network and discrete Fourier transform for real-time evaluation of friction stir welding 

      Boldsaikhan, Enkhsaikhan; Corwin, Edward M.; Logar, Antonette M.; Arbegast, William J. (Elsevier, 2011-12)
      This paper introduces a novel real-time approach to detecting wormhole defects in friction stir welding in a nondestructive manner. The approach is to evaluate feedback forces provided by the welding process using the ...