High-velocity impact experiment of aluminum foam sample using powder gun |
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Authors: | Shigeru Tanaka Kazuyuki Hokamoto Seiichi Irie Toshihiko Okano Zoran Ren Matej Vesenjak Shigeru Itoh |
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Affiliation: | aFaculty of Engineering, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan;bShock Wave and Condensed Matter Research Center, Kumamoto University, Kumamoto, Japan;cGraduate School of Science and Technology, Kumamoto University, Kumamoto, Japan;dFaculty of Mechanical Engineering, University of Maribor, Smetanova Ulica 17, Sl-2000 Maribor, Slovenia |
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Abstract: | Porous materials such as aluminum foam have been investigated for possible use as impact shock absorbers in transportation aeronautic applications. However, the response of aluminum foam during impacts at high velocities of more than 100 m/s is not yet fully understood. A high-velocity impact experiment was therefore carried out to clarify impact shock absorption properties of aluminum foam. A one-stage powder gun was used to accelerate an aluminum foam sample to impact a rigid wall. Velocity and deformation of the aluminum foam sample during impact was studied using a digital high-speed video camera, while the pressure wave in the aluminum foam sample was measured using a PVDF gauge. The experimental observations revealed uneven collapse of the aluminum foam sample structure during high speed impact with a general stress plateau effect, typical for cellular material structures when subjected to quasi-static loading. |
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Keywords: | Porous materials Aluminum foam High-velocity impact Powder gun High-speed video camera PVDF gauge |
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