Periodic bicontinuous composites for high specific energy absorption. Academic Article

abstract

• We report on the mechanical behavior of an interpenetrating carbon/epoxy periodic submicrometer-scale bicontinuous composite material fabricated following the design principles deduced from biological composites. Using microscopic uniaxial compressive tests, the specific energy absorption is quantitatively evaluated and compared with the epoxy/air and carbon/air precursors. The carbon/epoxy material demonstrates extremely high specific energy absorption up to 720 kJ/kg and shear-dominant interphase interactions from the interlocked hard (carbon) and soft (epoxy) phases. Such bicontinuous nanocomposites are a new type of structural metamaterial with designed cell topology and mechanical anisotropy. Their inherent small length scale can play a critical role in prohibiting segregated mechanical responses leading to flaw tolerance.

authors

• Thomas, Edwin

published proceedings

• Nano Lett

author list (cited authors)

• Lee, J., Wang, L., Boyce, M. C., & Thomas, E. L.

citation count

• 78

complete list of authors

• Lee, Jae-Hwang||Wang, Lifeng||Boyce, Mary C||Thomas, Edwin L

publication date

• August 2012

publisher

• American Chemical Society (ACS)  Publisher

published in

• Nano Letters: a journal dedicated to nanoscience and nanotechnology  Journal

keywords

• Interference Lithography
• Interpenetrating Phase Composite
• Mechanical Metamaterial
• Periodic Frame
• Protection

PubMed Central ID

• 22783965

Digital Object Identifier (DOI)

• 10.1021/nl302234f

start page

• 4392

end page

• 4396

volume

• 12

issue

• 8

URL

• http://dx.doi.org/10.1021/nl302234f

user-defined tag

• 7 Affordable and Clean Energy