Purpose/ Relevance: Conduct fundamental experiments to elucidate physical mechanisms responsible for damage in novel composite materials

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Novel Composite Materials Structures for Blast
Mitigation Arun Shukla, URI
Dynamic PhotoMechanics Laboratory

• Purpose/ Relevance Conduct fundamental
  experiments to elucidate physical mechanisms
  responsible for damage in novel composite
  materials structures subjected to extreme
  environments associated with blast fragment
  loading, thus leading to new more efficient
  materials structures.
• Innovation Highly controlled experiments with
  real time measurements at extremely high loading
  rates to give full field load-deformation
  damage information at materials structural
  level. DPML team at URI has unique capabilities
  and long experience for such experimentation.
• This Year outcome (a) A comprehensive series of
  experiments were conducted under controlled blast
  loading conditions using the shock tube facility
  to understand damage mechanisms in structural
  glass panels. A new type of glass panel was
  designed which restraints the shattered pieces of
  glass from flying off and causing damage and
  injuries (b) Numerical expressions were
  developed to understand the energy redistribution
  associated with shock loading (c) Experiments on
  the effect of curvature on blast mitigation in
  metallic panels were initiated.
• Long-range impact. Design of new
  multi-functional materials and structures with
  excellent blast mitigation capabilities to
  safeguard human life and property.
• Next Year The work on understanding the effect
  of curvature on blast mitigation properties of a
  structure will be continued with metals and then
  extended to composites. Efforts will also be made
  to further understand performance of sandwich
  glass composites.

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Novel Composite Materials Structures for Blast
Mitigation Publications
Dynamic PhotoMechanics Laboratory

• E. Wang, N Gardner and A. Shukla, The blast
  resistance of sandwich composites with stepwise
  graded cores, International Journal of Solid and
  Structures, 46, 3492-3502, 2009.
• E. Wang and A. Shukla, Analytical and
  Experimental Evaluation of Energies during Shock
  Wave Loading, International Journal of Impact
  Engineering, 37, 1188-1196, 2010.
• M. Jackson and A. Shukla, Performance of
  sandwich composites subjected to sequential
  impact and air blast loading, Composites Part B
  (2010), doi10.1016/j.compositesb.2010.09.005.
• E. Wang, N. Gardner and A. Shukla, Experimental
  study on the performance of sandwich composites
  with stepwise graded cores subjected to a shock
  wave loading, SEM Annual Conference and
  Exposition on Experimental and Applied Mechanics,
  Albuquerque, New Mexico , June 1-4, 2009.
• N. Gardner, Blast performance of sandwich
  composites with discretely layered core, SEM
  Annual Conference and Exposition on Experimental
  and Applied Mechanics, Student Paper
  Competition,  Albuquerque, New Mexico , June 1-4,
  2009.
• S.A. Tekalur, E. Wang, M. Jackson and A. Shukla,
  Failure Behavior and energy absorption of
  sandwich composites under dynamic loading, SEM
  Annual Conference and Exposition on Experimental
  and Applied Mechanics, Albuquerque, New Mexico ,
  June 1-4, 2009.
• E. Wang and A. Shukla, Evaluation of Incident,
  Reflected and Deformation Energies During Blast
  Experiments, SEM Annual Conference and
  Exposition on Experimental and Applied Mechanics,
  Albuquerque, New Mexico, June 1-4, 2009.
• N. Gardner and A. Shukla, The Blast Response of
  Sandwich Composites with a Functionally Graded
  Core, SEM Annual Conference and Exposition,
  Indianapolis, Indiana, June 7-10, 2010.
• N. Gardner and A. Shukla, The Blast Response of
  Sandwich Composites With a Functionally Graded
  Core and Polyurea Interlayer, SEM Annual
  Conference and Exposition, Indianapolis, Indiana,
  June 7-10, 2010.
• E. Wang and A. Shukla, The Blast Response of
  Sandwich Composites with In-Plane Pre-Loading.
  SEM Annual Conference and Exposition,
  Indianapolis, Indiana, June 7-10, 2010.
• P. Kumar and A. Shukla, Blast Loading response
  of Glass Panels, SEM Annual Conference and
  Exposition, Indianapolis, Indiana, June 7-10,
  2010.
• E. Wang and A. Shukla, Core Deformation of
  Sandwich Composites under Blast Loading, SEM
  Annual Conference and Exposition, Indianapolis,
  Indiana, June 7-10, 2010.

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Publications, Students Supported and Industry
Collaborations
Dynamic PhotoMechanics Laboratory

• E. Wang and A. Shukla, Blast Response of
  Sandwich Composites using Digital Image
  Correlation Technique, 9th International
  Conference on Sandwich Structures (ICSS9),
  Caltech, Pasadena, California, June 14 - 16,
  2010.
• E. Wang and A. Shukla, Performance of
  Pre-Stressed Sandwich Composites Subjected to
  Shock Wave Loading, 14th International
  Conference on Experimental Mechanics (ICEM 14),
  Poitiers, FRANCE July 4-9, 2010.
• P. Kumar and A. Shukla, Dynamic Response of
  Glass Panels Subjected to Shock Loading, IMPLAST
  2010, SEM Fall Conference, Providence, October
  12-14, 2010.
• E. Wang and A. Shukla, Energy and Impulse
  Evaluation during a Shock Tube Experiment,
  IMPLAST 2010, SEM Fall Conference, Providence,
  October 12-14, 2010.
• N. Gardner and A. Shukla, The Blast Resistance
  of Sandwich Composites with a Functionally Graded
  Core and Polyurea Interlayer, IMPLAST 2010, SEM
  Fall Conference, Providence, October 12-14, 2010.
• Four Papers are being submitted for the upcoming
  2011 SEM Conference and 3 Papers are under
  preparation for Journal publication.

• Consulting with industry
• 3 Tex, 109 Mackenan Dr., Cary, NC 27511
• 2. XO-Armor, 7812 Melrose Street, Houston, TX
  77022
• 3. Webcore, 8821 Washington Church Road,
  Miamisburg, OH 45342
• 4. TPI Composites, Inc., 373 Market Street,
  Warren, RI 02885

Graduate Students Supported 1. Puneet Kumar 2.
Matthew Jackson 3. Erheng Wang 4. Jefferson
Wright Undergraduate Students Supported 1.
Daniel Gracia 2. Alexander Escher 3. Andrew
Krystnewicz
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Dynamic PhotoMechanics Laboratory
Novel Composite Materials Structures for Blast
Mitigation Experimental Methods
Shock Tube Facility (at URI)
DIC System(at URI)