A Study on Dynamic Properties of Composite Metal Foams

Abstract

Composite metal foam is a new class of closed cell metal foam offering higher energy absorption compared to the monolithic material at approximately one-third of the density. The superior energy absorption capability of composite metal foam makes this material a potential candidate for structural components such as automotive crash box and crumple zones. However, a systematic study on the dynamic properties of composite metal foams is necessary before they can be utilized in vehicular structures. It has been reported that the energy absorption of other metal foams will increase by increasing the strain rate up to 4 at impact speeds of up to 200 m/s. In this study, the dynamic properties of composite metal foams under various impact speeds are obtained through a variety of experimental techniques. Subsequently, there results are compared to those published in the literature for other foams tested at various impact rates.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2012
Accession Number
ADA578379

Entities

People

  • Afsaneh Rabiei
  • Vincent H. Hammond

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Absorption
  • Chemical Composition
  • Digital Images
  • Materials
  • Mechanical Properties
  • Mechanical Working
  • Metallurgy
  • Military Research
  • Modulus Of Elasticity
  • Physical Properties
  • Powder Metallurgy
  • Stainless Steel
  • Strain Rate
  • Stress Strain Relations
  • Stresses
  • Structural Components
  • Yield Strength

Fields of Study

  • Materials science

Readers

  • Fire Suppression Systems Design.
  • Mechanical Engineering/Mechanics of Materials.
  • Structural Health Monitoring of Composite Structures.