Compressive Properties of a Closed-Cell Aluminum Foam as a Function of Strain-Rate and Temperature.

Conference · Mon Jan 01 00:00:00 EST 2001

OSTI ID:975520

Gray, III, G T ^[1]; Liu, C ^[2]; Trujillo, C P ^[3]; Jacquez, B ^[4]; Mukai, T; Cady, C M ^[5]

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1. George T.
2. Cheng
3. Carl P.
4. Benito
5. Carl McElhinney

The compressive deformation behavior of a closed-cell Aluminum foam (ALPORAS) manufactured by Shinko Wire. Co. in Japan was evaluated under static and dynamic loading conditions as a function of temperature. High strain rate tests (1000 - 2000/s) were conducted using a split-Hopkinson pressure bar(SHPB). Quasi-static and intermediate strain rate tests were conducted on a hydraulic load frame. Little change in the flow stress behavior as a function of strain rate was measured. The deformation behavior of the Al-foam was however found to be strongly temperature dependent under both quasistatic and dynamic loading. Localized deformation and stress state instability during testing of metal foams will be discussed in detail since the behavior over the entire range of strain rates indicates nonuniform deformation.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• OSTI ID: 975520
• Report Number(s): LA-UR-01-3149; TRN: US201018%%709
• Resource Relation: Conference: Submitted to: 12th APS Topical Group Conference, June 24-29, 2001, Atlanta, GA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM
DEFORMATION
FLOW STRESS
HYDRAULICS
INSTABILITY
SHOCK WAVES
STRAIN RATE
TESTING