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Energy absorption characteristics of aluminum sandwich panels with Shear Thickening Fluid (STF) filled 3D fabric cores under dynamic loading conditions
Abstract In this study, the energy absorption characteristics of aluminum sandwich panels with Shear Thickening Fluid (STF) filled 3D fabric cores was investigated under various loading conditions. The sandwich panel with 5-ply STF-filled 3D fabric (2Al-5STF) showed the highest absorbed energy (3.53 J) in three-point bending test. The 2Al-5STF specimen also demonstrated more resistance under ballistic impact loading than the sandwich panel with 5-ply neat 3D fabric (2Al-5Neat) such that with less average penetration depth presented the highest ballistic resistance. The dynamic compression test showed the STF helped to improve the impact absorption and compressive performance of the sandwich panels. The average peak force applied to the 2Al-5STF sandwich panel (30.5 kN) was 24.5 and 54.6% less than the 2AL-5Neat and 4Al specimens, respectively, and this sandwich panel demonstrated the highest impact absorption (peak force reduction). However, the 2Al-3STF specimen demonstrated the highest peak force reduction per unit areal density, and the 2Al-5Neat specimen demonstrated better reversibility.
Highlights 3D woven and STF was used due to their high potential in absorbing impact energy. The STF improved the energy absorption characteristics of the sandwich panels. The 5-ply STF-filled specimen demonstrated the best compressive performance. The 3-ply STF-filled specimen showed the highest force reduction per areal density.
Energy absorption characteristics of aluminum sandwich panels with Shear Thickening Fluid (STF) filled 3D fabric cores under dynamic loading conditions
Abstract In this study, the energy absorption characteristics of aluminum sandwich panels with Shear Thickening Fluid (STF) filled 3D fabric cores was investigated under various loading conditions. The sandwich panel with 5-ply STF-filled 3D fabric (2Al-5STF) showed the highest absorbed energy (3.53 J) in three-point bending test. The 2Al-5STF specimen also demonstrated more resistance under ballistic impact loading than the sandwich panel with 5-ply neat 3D fabric (2Al-5Neat) such that with less average penetration depth presented the highest ballistic resistance. The dynamic compression test showed the STF helped to improve the impact absorption and compressive performance of the sandwich panels. The average peak force applied to the 2Al-5STF sandwich panel (30.5 kN) was 24.5 and 54.6% less than the 2AL-5Neat and 4Al specimens, respectively, and this sandwich panel demonstrated the highest impact absorption (peak force reduction). However, the 2Al-3STF specimen demonstrated the highest peak force reduction per unit areal density, and the 2Al-5Neat specimen demonstrated better reversibility.
Highlights 3D woven and STF was used due to their high potential in absorbing impact energy. The STF improved the energy absorption characteristics of the sandwich panels. The 5-ply STF-filled specimen demonstrated the best compressive performance. The 3-ply STF-filled specimen showed the highest force reduction per areal density.
Energy absorption characteristics of aluminum sandwich panels with Shear Thickening Fluid (STF) filled 3D fabric cores under dynamic loading conditions
Jeddi, Mohsen (author) / Yazdani, Mojtaba (author) / Hasan-nezhad, Hosein (author)
Thin-Walled Structures ; 168
2021-07-29
Article (Journal)
Electronic Resource
English
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