Thrust 4
BLAST MITIGATION

The research effort in mitigation will focus on basic issues that help develop novel materials and structures to mitigate blast effects. Necessary is an underlying understanding of structural response to internal or external blast, fragmentation, or a combination of impacts such as simultaneous blast and fragmentation or blast and fire. Such understanding will be the foundation of modeling and will result in new designs and protocols for infrastructure protection. Further more, ways to improve resilience of structures will be investigated as well as methods to assess remaining building-life after an explosive attack.

Our approach includes development, characterization,and modeling of novel heterogeneous materials and coatings including particulate, layered and functionally graded materials, and sandwich compositions as well as self-healing concrete and polymers. This includes the material response when it is subjected to extremely high strain rate blast loading. An integral part of the thrust is the understanding and modeling of structural response, including nonlinear shock propagation, progressive collapse, and various loading scenarios such as  external and internal blast, fragments, and fire. The long-range mission of the thrust is to elucidate to fundamental behavior, e.g. internal friction mechanisms are understood, mechanical response can be better handled with predictive approaches and will help bring fundamental science to bear on practical outcomes.

Mitigation approaches depend on the  energetic material, its containment and range as well as physical surrounding of the “energetic material object” including proximity to personnel and buildings. Effective mitigation strategies must be threat specific , yet applicable to the worst case scenario. the threat specific approach depends on good characterization and properties of the energetic (F1) and reliable detection and identification (F2 and F3). It would be a daunting task to test all possible scenarios ; therefore, the critical role of modeling is easily recognized.

 

Project Leaders

  • John J. Myers
    Associate Professor
    Missouri S&T
    Email

  • Choon-Shik Yoo
    Professor
    Washington State University
    Email

  • Ashkan Vaziri
    Professor
    Northeastern University
    Email

  • Mehrdad Sasani
    Associate Professor
    Northeastern University
    Email

Faculty and Staff

  • Minseob Kim
    Post Doctoral
    Washington State University
    Email

  • Jing-Yin Chen
    Post Doctoral
    Washington State University
    Email

  • Haoyan Wei
    Post Doctoral
    Washington State University
    Email

  • Yaser Mirzaei
    Postdoc
    NEU
    Email

  • Jason Baird
    Associate Professor
    Missouri S&T
    Email

  • Jim Papadopoulos
    Associate Research Scientist
    Northeastern University
    Email

Students

  • Laurin Bookout
    Missouri S&T
  • Phillip Mulligan
    Missouri S&T
  • Natalia Carey
    Missouri S&T
  • Ranga Dias
    Washington State University
  • Amin Ajdari
    Northeastern University
  • Hamid Ebrahimi
    Northeastern University
  • Ali Kazemi
    Northeastern University
  • Caleb Baumgart
    Missouri S&T
  • Julie Willey
    Missouri S&T
  • William Bott
    Washington State University
  • Mechanical properties of open-cell rhombic dodecahedron cellular structures S. Babaee, B.H. Jahromi, A. Ajdari, H. Nayeb-Hashemi, A. Vaziri Acta Materialia., 60, 2012. 2873-2885 2012.
  • Single lap adhesively bonded joints with non-flat interfaces M. Ashrafi, A. Ajdari, N. Rahbar, J. Papadopoulos, H. Nayeb-Hashemi, A. Vaziri Int. J. Adhesion & Adhesives, 32, 2012. 46-52 2012.
  • Oxygen-Diffusion Limited Metal Combustions in Zr, Fe and Ti Foils: Time-Resolved X-ray Diffraction Studies Haoyan Wei, Jing-Yin Chen and Choong-Shik Yoo J. App. Phys. 111, 063528 2012.
  • Kinetics of Small Single Particle Combustion of Zirconium Alloy Haoyan Wei and Choong-Shik Yoo J. App. Phys. 111, 023506 2012.
  • Timeresolved Synchrotron X-ray Diffraction on Pulse Laser Heated Iron in Diamond Anvil Cell Choong-Shik Yoo, Haoyan Wei, Ranga Dias, Guoyin Shen, Jesse Smith, Jing-Yin Chen, and William Evans J. Phys. C 2012.
  • Hierarchical honeycombs with tailorable properties A. Ajdari, B. H. Jahromi, J. Papadopoulos, H. Nayeb-Hashemi, A. Vaziri Int. J. Solids Struct., 49, 2012. 1413-1419 2012.
  • Blast Testing of Three Types of Panels with External Strengthening Systems Carey, N.L., Myers, J.J. 2012 SEM International Congress Proceedings, Carlsbad, California, June 2012.
  • Structural Analysis of Reinforced Concrete Chimneys Subjected to Uncontrolled Fire. Vaziri, Ashkan Engineering Structures 2011.
  • Elasto-plastic Properties and Energy Absorption of 3-D Tessellated Cellular Structures Vaziri, Ashkan PLASTICITY 2011, Vol.33 2011.
  • Time- and Angleresolved X-ray Diffraction to Probe Structural and Chemical Evolution during Al-Ni Intermetallic Reactions Choong-Shik Yoo, Haoyan Wei, Jing-Yin Chen, Guoyin Shen, Paul Chow, and Yuming Xiao Rev. Sci. Instrum. 82, 113901 2011.