Document Type : Research Article


Mechanical Engineering Department, University of Wisconsin Milwaukee College of Engineering & Applied Science 53211


The impact toughness of closed-cell aluminum foam with various densities was investigated using Charpy impact. The impact load history revealed an elastic region followed by a rapid load drop region. The peak load and impact toughness of aluminum foam increase exponentially with density. The power exponents for the impact toughness test are greater than that of the 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. Copyright © 2018 VBRI Press.


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