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Experimental investigation on the dynamic behaviour of aluminum foam sandwich plate under repeated impacts

Experimental investigation on the dynamic behaviour of aluminum foam sandwich plate under repeated impacts
Experimental investigation on the dynamic behaviour of aluminum foam sandwich plate under repeated impacts

Engineering structures in marine and vehicle are frequently subjected to repeated impact loadings. The damage can't be neglected during the accumulation of deflection caused by the repeated impacts. In this paper, the dynamic behaviour of aluminum foam sandwich plate (AFSP) under repeated impacts was investigated by impact tests using INSTRON 9350 Drop Tower. The penetration behavior of front face and back face are compared. Meanwhile, the relationships between deflections of face sheets with impact number as well as the loading-unloading process during repeated impacts are analyzed. Results showed that, the permanent deflections of the front face and back face increased gradually, while the increments decreased until the crack occurred on the front face sheet. The damage modes of front face and back face were different. The impact number (Np) for penetration of front fact and residual number (Nr) for perforation of back face both decreased in exponential form with the increase of impact energy. It implied that the back face sheet still has residual load-carrying capacity even if the front face sheet became cracked.

Aluminum foam sandwich plate, Dynamic behavior, Impact tests, Repeated impacts
0263-8223
298-305
Guo, Kailing
d04e098b-323c-4a99-b211-6698b06854d7
Zhu, Ling
80ddca5f-c37c-4add-9d97-e1bcc3d099f0
Li, Yinggang
977170c4-6370-4143-8bd4-e8472571052f
Yu, T.X.
a6651973-0819-4939-9ef5-ce93fe30790d
Shenoi, Ajit
a37b4e0a-06f1-425f-966d-71e6fa299960
Zhou, Qingwen
b501462b-794f-4226-9856-865e8e6f3e43
Guo, Kailing
d04e098b-323c-4a99-b211-6698b06854d7
Zhu, Ling
80ddca5f-c37c-4add-9d97-e1bcc3d099f0
Li, Yinggang
977170c4-6370-4143-8bd4-e8472571052f
Yu, T.X.
a6651973-0819-4939-9ef5-ce93fe30790d
Shenoi, Ajit
a37b4e0a-06f1-425f-966d-71e6fa299960
Zhou, Qingwen
b501462b-794f-4226-9856-865e8e6f3e43

Guo, Kailing, Zhu, Ling, Li, Yinggang, Yu, T.X., Shenoi, Ajit and Zhou, Qingwen (2018) Experimental investigation on the dynamic behaviour of aluminum foam sandwich plate under repeated impacts. Composite Structures, 200, 298-305. (doi:10.1016/j.compstruct.2018.05.148).

Record type: Article

Abstract

Engineering structures in marine and vehicle are frequently subjected to repeated impact loadings. The damage can't be neglected during the accumulation of deflection caused by the repeated impacts. In this paper, the dynamic behaviour of aluminum foam sandwich plate (AFSP) under repeated impacts was investigated by impact tests using INSTRON 9350 Drop Tower. The penetration behavior of front face and back face are compared. Meanwhile, the relationships between deflections of face sheets with impact number as well as the loading-unloading process during repeated impacts are analyzed. Results showed that, the permanent deflections of the front face and back face increased gradually, while the increments decreased until the crack occurred on the front face sheet. The damage modes of front face and back face were different. The impact number (Np) for penetration of front fact and residual number (Nr) for perforation of back face both decreased in exponential form with the increase of impact energy. It implied that the back face sheet still has residual load-carrying capacity even if the front face sheet became cracked.

Full text not available from this repository.

More information

Accepted/In Press date: 29 May 2018
e-pub ahead of print date: 30 May 2018
Published date: 15 September 2018
Keywords: Aluminum foam sandwich plate, Dynamic behavior, Impact tests, Repeated impacts

Identifiers

Local EPrints ID: 424863
URI: http://eprints.soton.ac.uk/id/eprint/424863
ISSN: 0263-8223
PURE UUID: 155858c4-cefa-4be1-a5e9-f30f386db00b

Catalogue record

Date deposited: 05 Oct 2018 11:51
Last modified: 05 Oct 2018 11:51

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