scholarly journals Compression after high-velocity impact behavior of pseudo-elastic shape memory alloy embedded glass/epoxy composite laminates

2021 ◽  
Vol 259 ◽  
pp. 113519 ◽  
Author(s):  
Luv Verma ◽  
J. Jefferson Andrew ◽  
Srinivasan M. Sivakumar ◽  
G. Balaganesan ◽  
S. Vedantam ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
High Velocity ◽  
Composite Laminates ◽  
Epoxy Composite ◽  
Impact Behavior ◽  
High Velocity Impact ◽  
Velocity Impact

scholarly journals High-velocity impact behavior of hybrid fiber-reinforced epoxy composites

2021 ◽  
Vol 43 (9) ◽  
Author(s):  
Clifton Stephen ◽  
B. Shivamurthy ◽  
Abdel-Hamid I. Mourad ◽  
Rajiv Selvam
Keyword(s):  
Energy Absorption ◽  
High Velocity ◽  
Composite Laminates ◽  
Epoxy Composite ◽  
Matrix Cracking ◽  
Impact Behavior ◽  
Stacking Sequence ◽  
High Velocity Impact ◽  
Velocity Impact ◽  
Hybrid Fabric

AbstractIn this study, non-hybrid and hybrid (Kevlar, carbon and glass) fabric epoxy composite laminates were fabricated with different stacking sequences by hand lay-up followed by hot-compression molding. Experimental tests were conducted to investigate tensile, flexural, and hardness characteristics. It was found that the stacking sequence did not significantly affect the tensile strength and hardness values of the composites; however, it affected their flexural strength. Damage morphology of the specimens through SEM images showed that the major damage mechanisms in the composites were delamination, fiber breakage, pull-out, and matrix cracking. Based on the static experimental results, the high-velocity impact behavior was investigated through simulation study using LS-DYNA finite element analysis (FEA) software. To study the ballistic impact, a steel projectile with a hemispherical penetrating edge at impact velocities of 100 m.s−1, 250 m.s−1, and 350 m.s−1 was considered. Among non-hybrid fabric epoxy composite specimens, Kevlar/epoxy specimen was found to have the highest impact energy absorption followed by carbon/epoxy and glass/epoxy, respectively. Regarding the hybrid fabric epoxy composite specimens, the ones with Kevlar plies in the rear face exhibited better energy absorption compared to other stacking sequences. The non-hybrid glass/epoxy specimen had the lowest energy absorption and highest post-impact residual velocity of projectile among all specimens. From the FEA results, it was noted that impact resistance of hybrid composites improved when Kevlar fabric was placed in the rear layer. Thus, the stacking sequence was observed to be of substantial importance in the development of fabric-reinforced composite laminates for high-velocity impact applications.

scholarly journals High velocity Impact Analysis of Carbon/Epoxy Composite Laminates

2012 ◽  
Vol 25 (6) ◽  
pp. 191-197
Author(s):  
Young-Ah Kim ◽  
Kyeongsik Woo ◽  
Won-Young Yoo ◽  
In-Gul Kim ◽  
Jong-Heon Kim
Keyword(s):  
High Velocity ◽  
Composite Laminates ◽  
Impact Analysis ◽  
Epoxy Composite ◽  
High Velocity Impact ◽  
Velocity Impact

High-velocity impact of graphite/epoxy composite laminates

1997 ◽  
Vol 57 (9-10) ◽  
pp. 1369-1379 ◽  
Author(s):  
J.K. Chen ◽  
Firooz A. Allahdadi ◽  
Theodore C. Carney
Keyword(s):  
High Velocity ◽  
Composite Laminates ◽  
Epoxy Composite ◽  
High Velocity Impact ◽  
Velocity Impact

scholarly journals High-Velocity Impact Damage Behavior of Carbon/Epoxy Composite Laminates

2015 ◽  
Vol 16 (2) ◽  
pp. 190-205 ◽  
Author(s):  
Young A. Kim ◽  
Kyeongsik Woo ◽  
Hyunjun Cho ◽  
In-Gul Kim ◽  
Jong-Heon Kim
Keyword(s):  
High Velocity ◽  
Composite Laminates ◽  
Epoxy Composite ◽  
Impact Damage ◽  
High Velocity Impact ◽  
Damage Behavior ◽  
Velocity Impact

Experimental and analytical study of high velocity impact on Kevlar/Epoxy composite plates

2012 ◽  
Vol 2 (4) ◽  
Author(s):  
Rahul Sikarwar ◽  
Raman Velmurugan ◽  
Velmuri Madhu
Keyword(s):  
High Velocity ◽  
Analytical Study ◽  
Epoxy Composite ◽  
Composite Plates ◽  
Impact Behavior ◽  
Back Side ◽  
High Velocity Impact ◽  
Velocity Impact ◽  
Energy Absorbing ◽  
Delamination Area

AbstractIn the present study, impact behavior of Kevlar/Epoxy composite plates has been carried out experimentally by considering different thicknesses and lay-up sequences and compared with analytical results. The effect of thickness, lay-up sequence on energy absorbing capacity has been studied for high velocity impact. Four lay-up sequences and four thickness values have been considered. Initial velocities and residual velocities are measured experimentally to calculate the energy absorbing capacity of laminates. Residual velocity of projectile and energy absorbed by laminates are calculated analytically. The results obtained from analytical study are found to be in good agreement with experimental results. It is observed from the study that 0/90 lay-up sequence is most effective for impact resistance. Delamination area is maximum on the back side of the plate for all thickness values and lay-up sequences. The delamination area on the back is maximum for 0/90/45/-45 laminates compared to other lay-up sequences.

Effect of shape memory alloy wires on high-velocity impact response of basalt fiber metal laminates

2017 ◽  
Vol 37 (5) ◽  
pp. 300-309 ◽  
Author(s):  
Reza Eslami-Farsani ◽  
Masoud Khazaie
Keyword(s):  
Mechanical Properties ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
High Velocity ◽  
Volume Fraction ◽  
High Velocity Impact ◽  
Absorbed Energy ◽  
Fiber Metal Laminates ◽  
Velocity Impact ◽  
Fiber Metal

Fiber metal laminates are commonly used materials in industrial applications due to low density and excellent mechanical properties such as impact resistance. In this study, the effect of shape memory alloy wires on the impact properties of fiber metal laminates is evaluated and discussed. The volume fraction of wires and the pre-strain of wires were selected as the variables of the experiments. The samples were fabricated using hand lay-up method and their behavior was evaluated under high-velocity impact test. Based on the results, a significant change in the amount of absorbed energy was obtained using embedded wires. However, with increasing the volume fraction of wires, the absorbed energy decreases due to the discontinuity in mechanical properties of the specimens. On the other hand, applying pre-strain leads to residual stresses in samples. The observed residual stress in specimens with four embedded wires and 2% pre-strain level shows the most absorbed energy.

Simulations of High Velocity Impacts of Ice on Carbon/Epoxy Composite Laminates

2014 ◽  
Vol 566 ◽  
pp. 505-510 ◽  
Author(s):  
Jesús Pernas-Sánchez ◽  
José Alfonso Artero-Guerrero ◽  
David Varas ◽  
Jorge López-Puente
Keyword(s):  
Mechanical Behavior ◽  
High Velocity ◽  
Composite Laminates ◽  
Epoxy Composite ◽  
Experimental Tests ◽  
High Velocity Impact ◽  
Velocity Impact ◽  
Wide Range ◽  
High Velocity Impacts ◽  
The Impact

In this work simulations of high velocity impacts of ice spheres on carbon/epoxy laminates are accomplished. The Drucker-Prager model has been chosen to describe the mechanical behavior of the ice under high velocity impact conditions. Results have been validated by means of experimental tests performed in a wide range of impact velocities. The delaminated area was chosen as comparison variable, and reflects that the model predicts adequately the impact process.

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