%0 Journal Article
%T Numerical Analysis and Experimental Verification of Ti/APC-2/Kevlar Hybrid Composite Laminates Due to Low-Velocity Impact
%A Ming Hwa R. Jen
%A Che Kai Chang
%A Ying Hui Wu
%J Materials Sciences and Applications
%P 1083-1095
%@ 2153-1188
%D 2018
%I Scientific Research Publishing
%R 10.4236/msa.2018.913079
%X <p style=\"margin-left:10.0pt;\">
	<span><span style=\"font-family:;\" \"=\"\">The mechanical properties of Ti/APC-2/Kevlar/epoxy
hybrid composite laminates after low velocity impact were investigated at room
temperature. There were three types of samples, including three layered
[Ti/(0/90)<sub>s</sub>/Ti], five layered [Ti/(0/90)<sub>2</sub>/<img src=\"Edit_ea4cf0ee-9bf8-4523-826b-a23a326accdf.bmp\" alt=\"\" /></span><span></span></span><span><span><span style=\"font-family:;\" \"=\"\">]<sub>s</sub> and nine layered [Ti/Kevlar/Ti/(0/90)<sub>2</sub>/<img src=\"Edit_3ce7f600-91e5-425c-b6bd-d6bf4856fedc.bmp\" alt=\"\" /></span><span></span></span></span><span><span><span style=\"font-family:;\" \"=\"\">]<sub>s</sub>. The lay-ups of APC-2 were crossply,
while Ti layers were treated by chromic acid anodic method. Ti and APC-2 were stacked
to fabricate the composite laminates via hot press curing process. Kevlar
layers were added to fabricate nine-layered composite laminates via vacuum
assisted resin transfer molding.</span></span></span><span><span><span style=\"font-family:;\" \"=\"\"> </span></span></span><span><span><span style=\"font-family:;\" \"=\"\">The drop-weight tests were conducted with a
hemispherical nosed projectile in 10 mm diameter. The impact loads were 5 kg
and 10 kg and impact heights were adjusted to penetrate samples or the maximum
height 1.50 m. The static tensile tests were conducted to measure the residual
mechanical properties after impact. The free body drop tests were also
simulated by using finite element method and software ANSYS LS-DYNA3D.</span></span></span><span><span><span style=\"font-family:;\" \"=\"\"> </span></span></span><span><span><span style=\"font-family:;\" \"=\"\">The results showed that
the bottom Ti layer absorbed more internal energy than the top Ti layer, then
the cracks were found in the bottom Ti layer more often. The ultimate tensile
strength reduced significantly after impact. The initial longitudinal
compliance increased with the impact height increasing and decreased after the
samples penetrated. Comparing the experimental data with the numerical results,
it was found </span></span></span><span><span><span style=\"font-family:;\" \"=\"\">that </span></span></span><span><span><span style=\"font-family:;\" \"=\"\">the
damage of the latter was more serious than that of the former. On the
conservative side, the results of numerical simulation </span></span></span><span><span><span style=\"font-family:;\" \"=\"\">are</span></span></span><span><span><span style=\"font-family:;\" \"=\"\"> acceptable and
%K Titanium
%K APC-2
%K Kevlar
%K Low-Velocity
%K Impact
%K Tensile Test
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=89510