The Fracture Properties of Novel Sandwich Structures

Sandwich structures based on layers of fiber-reinforced plastics (FRP) bonded to low-density core materials are currently used in the maritime, train and aerospace sector. However, current technological efforts have concentrated on introducing cellular aluminum components as the core material in order to develop new lightweight cost-effective sandwich structures. These cellular materials offer a number of unique combinations of properties such as low density, high stiffness and strength as well as high impact energy adsorption. Additionally, these materials offer acoustic proof features and low thermal conductivity characteristics. In addition to the mechanical performance of the cellular system, the use of a multilayered structure as the skin material bonded to the cellular core is a novel approach that has shown very promising impact performance. The multilayered skin structures consist on alternating plies of composite material and metal alloy layers. These hybrid laminates combine the excellent specific strength, stiffness and fatigue properties of composites with the superior machinability and toughness of most engineering metals. The present research proposal will concentrate on developing a novel lightweight sandwich structure constituted by a unique cellular metal-ceramic material and enhanced skin layers based on a multilayered arrangement of high-impact self-reinforced composite material and metal alloy plies. Here, the tensile, intralaminar-interlaminar, fatigue, impact, and high strain rate properties of these novel sandwich structures will be investigated under a wide range of loading conditions. It is expected that through the incorporation of a cellular metal-ceramic material and high-impact reinforced multilayered laminates into sandwich structures, exciting breakthroughs can be achieved leading to the development of a new breed of structures with superior mechanical performance for the transportation sector.

Language

  • English

Project

  • Status: Completed
  • Funding: $99933.00
  • Contract Numbers:

    DTRT06-G0041

  • Sponsor Organizations:

    Youngstown State University, Ohio

    Center for Transportation & Materials Engineering
    One University Plaza, Moser Hall
    Youngstown, OH  United States  44555
  • Project Managers:

    Esenwein, Joann

  • Performing Organizations:

    Youngstown State University, Ohio

    Center for Transportation & Materials Engineering
    One University Plaza, Moser Hall
    Youngstown, OH  United States  44555
  • Principal Investigators:

    Cortes, Pedro

  • Start Date: 20110501
  • Expected Completion Date: 0
  • Actual Completion Date: 20120501
  • Source Data: RiP Project 28195

Subject/Index Terms

Filing Info

  • Accession Number: 01473895
  • Record Type: Research project
  • Source Agency: Youngstown State University Center for Transportation and Materials Engineering
  • Contract Numbers: DTRT06-G0041
  • Files: UTC, RiP
  • Created Date: Feb 27 2013 1:00AM