Impact Toughness of Closed-Cell Aluminum Foam

Abstract:

The impact toughness of closed-cell aluminum foam with various densities was investigated. The impact load history revealed an elastic region followed by a rapid load drop region. The peak load and impact toughness of aluminum foam increases exponentially with density. The power exponents for impact toughness test are greater than that for compressive test. Fracture analysis indicated a mixed-rupture mode of quasi-cleavage and small shallow dimples. It can be attributed to the complex state of stress of notched specimens and elevated impact velocity under impact loading.

• Periodical: Materials Science Forum (Volume 933)
• Pages: 203-208
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.933.203
• Online since: October 2018
• Authors: Yong Liang Mu*, Ding Ding Wang, Yong Dong He, Guang Chun Yao
• Keywords: Energy Absorption, Impact Toughness, Metal Foam

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