Shock Wave Attenuation Characteristics of Aluminum Foam Sandwich Panels Subjected to Blast Loading
Comparative experiments were conducted with two different structures to study the mechanism of aluminum foam sandwich attenuating blast shock wave. The sandwich structure is composed of “steel–aluminum foam–steel,” and the mild steel structure is composed of “steel–steel.” In the experiment, the pol...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2018/2686389 |
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| _version_ | 1832566886410223616 |
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| author | Jinglin Xu Jianqing Liu Wenbin Gu Xin Liu Tao Cao |
| author_facet | Jinglin Xu Jianqing Liu Wenbin Gu Xin Liu Tao Cao |
| author_sort | Jinglin Xu |
| collection | DOAJ |
| description | Comparative experiments were conducted with two different structures to study the mechanism of aluminum foam sandwich attenuating blast shock wave. The sandwich structure is composed of “steel–aluminum foam–steel,” and the mild steel structure is composed of “steel–steel.” In the experiment, the polyvinylidene fluoride transducers were used to directly test the load of stress wave between different interfaces of sandwich and mild steel structures. The strain of back sheet was simultaneously measured using high-precision strain gauge. The accuracy of the test results was verified by Henrych’s formula. Experimental results show that the wave attenuation rate on the mild steel structure is only 11.3%, whereas the wave attenuation rate on the sandwich structure can exceed 90%. The interface effect is clearly a more crucial factor in the wave attenuation. The peak value of back sheet strain in the mild steel structure is much higher than the sandwich structure. The apparent overall “X” crushing band is produced in the aluminum foam core, and scanning electron microscope (SEM) observation clearly shows the collapse of the cell wall. Experiments on the sandwich structure with different aluminum foam densities indicate that increasing the relative density results in increased attenuation capability of the aluminum foam and decreased attenuation capability of the sandwich structure. Experiments on the sandwich structure with different aluminum foam thickness indicate that increasing the thickness results in increased attenuation capability of the aluminum foam and the sandwich structure. |
| format | Article |
| id | doaj-art-38b51d097f9646a98373471907d76770 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-38b51d097f9646a98373471907d767702025-02-03T01:02:51ZengWileyShock and Vibration1070-96221875-92032018-01-01201810.1155/2018/26863892686389Shock Wave Attenuation Characteristics of Aluminum Foam Sandwich Panels Subjected to Blast LoadingJinglin Xu0Jianqing Liu1Wenbin Gu2Xin Liu3Tao Cao4PLA Army Engineering University, Nanjing, ChinaPLA Army Engineering University, Nanjing, ChinaPLA Army Engineering University, Nanjing, ChinaPLA Army Engineering University, Nanjing, ChinaPLA Army Engineering University, Nanjing, ChinaComparative experiments were conducted with two different structures to study the mechanism of aluminum foam sandwich attenuating blast shock wave. The sandwich structure is composed of “steel–aluminum foam–steel,” and the mild steel structure is composed of “steel–steel.” In the experiment, the polyvinylidene fluoride transducers were used to directly test the load of stress wave between different interfaces of sandwich and mild steel structures. The strain of back sheet was simultaneously measured using high-precision strain gauge. The accuracy of the test results was verified by Henrych’s formula. Experimental results show that the wave attenuation rate on the mild steel structure is only 11.3%, whereas the wave attenuation rate on the sandwich structure can exceed 90%. The interface effect is clearly a more crucial factor in the wave attenuation. The peak value of back sheet strain in the mild steel structure is much higher than the sandwich structure. The apparent overall “X” crushing band is produced in the aluminum foam core, and scanning electron microscope (SEM) observation clearly shows the collapse of the cell wall. Experiments on the sandwich structure with different aluminum foam densities indicate that increasing the relative density results in increased attenuation capability of the aluminum foam and decreased attenuation capability of the sandwich structure. Experiments on the sandwich structure with different aluminum foam thickness indicate that increasing the thickness results in increased attenuation capability of the aluminum foam and the sandwich structure.http://dx.doi.org/10.1155/2018/2686389 |
| spellingShingle | Jinglin Xu Jianqing Liu Wenbin Gu Xin Liu Tao Cao Shock Wave Attenuation Characteristics of Aluminum Foam Sandwich Panels Subjected to Blast Loading Shock and Vibration |
| title | Shock Wave Attenuation Characteristics of Aluminum Foam Sandwich Panels Subjected to Blast Loading |
| title_full | Shock Wave Attenuation Characteristics of Aluminum Foam Sandwich Panels Subjected to Blast Loading |
| title_fullStr | Shock Wave Attenuation Characteristics of Aluminum Foam Sandwich Panels Subjected to Blast Loading |
| title_full_unstemmed | Shock Wave Attenuation Characteristics of Aluminum Foam Sandwich Panels Subjected to Blast Loading |
| title_short | Shock Wave Attenuation Characteristics of Aluminum Foam Sandwich Panels Subjected to Blast Loading |
| title_sort | shock wave attenuation characteristics of aluminum foam sandwich panels subjected to blast loading |
| url | http://dx.doi.org/10.1155/2018/2686389 |
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