scholarly journals A novel failure analysis of SMA reinforced composite plate based on a strain-rate-dependent model: low-high velocity impact

2019 ◽  
Vol 8 (1) ◽  
pp. 812-826 ◽  
Author(s):  
Mengzhou Chang ◽  
Zhenqing Wang ◽  
Wenyan Liang ◽  
Min Sun
Keyword(s):  
Failure Analysis ◽  
Strain Rate ◽  
High Velocity ◽  
Composite Plate ◽  
High Velocity Impact ◽  
Velocity Impact ◽  
Rate Dependent ◽  
Reinforced Composite ◽  
Dependent Model

High-Velocity Impact of Carbon/Epoxy Composite Laminates

2007 ◽  
Vol 334-335 ◽  
pp. 73-76
Author(s):  
Gui Ping Zhao ◽  
Zheng Hao Wang ◽  
Jian Xin Zhang ◽  
Chong Du Cho
Keyword(s):  
Strain Rate ◽  
High Velocity ◽  
Composite Laminates ◽  
Epoxy Composites ◽  
High Velocity Impact ◽  
Velocity Impact ◽  
Rate Dependent ◽  
Dependent Behavior ◽  
Static Tensile ◽  
Split Hopkinson

The response of Carbon/epoxy composites under high velocity impact was investigated experimentally. The strain rate dependent behavior of T300 Carbon/epoxy matrix composite in tension is studied experimentally by split Hopkinson bar technique. Dynamic stress-strain plot was obtained and compared with the quasi-static tensile test results. The results of the study indicate that Carbon/epoxy composites are strain rate dependent materials. Stacking sequence has a significant effect on the material response. Tensile strength of the composites all increased with increasing strain rate. And failure strain decreased when strain rate increased.

Effect of strain rate, off-axis loading and high-velocity impact damage on the compressive strength of C/SiC composite

2018 ◽  
Vol 53 (4) ◽  
pp. 535-546 ◽  
Author(s):  
M Altaf ◽  
S Singh ◽  
VV Bhanu Prasad ◽  
Manish Patel
Keyword(s):  
Compressive Strength ◽  
Strain Rate ◽  
High Velocity ◽  
Impact Damage ◽  
The Other ◽  
High Velocity Impact ◽  
Fibre Bundles ◽  
Velocity Impact ◽  
Kink Bands ◽  
Other Hand

The compressive strength of C/SiC composite at different strain rates, off-axis orientations and after high-velocity impact was studied. The compressive strength was found to be 137 ± 23, 130 ± 46 and 162 ± 33 MPa at a strain rate of 3.3 × 10−5, 3.3 × 10−3, 3.3 × 10−3 s−1, respectively. On the other hand, the compressive strength was found to be 130 ± 46, 99 ± 23 and 87 ± 9 MPa for 0°/90°, 30°/60° and 45°/45° fibre orientations to loading direction, respectively. After high-velocity impact, the residual compressive strength of C/SiC composite was found to be 58 ± 26, 44 ± 18 and 36 ± 3.5 MPa after impact with 100, 150 and 190 m/s, respectively. The formation of kink bands in fibre bundles was found to be dominant micro-mechanism for compressive failure of C/SiC composite for 0°/90° orientation. On the other hand, delamination and the fibre bundles rotation were found to be the dominant mechanism for off-axis failure of composite.

High strain rate induced localized amorphization in cubic BN/NiCrAl nanocomposite through high velocity impact

2011 ◽  
Vol 65 (7) ◽  
pp. 581-584 ◽  
Author(s):  
Xiao-Tao Luo ◽  
Guan-Jun Yang ◽  
Chang-Jiu Li ◽  
Katsuyoshi Kondoh
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
High Velocity ◽  
High Strain ◽  
High Velocity Impact ◽  
Velocity Impact

EXPERIMENTAL INVESTIGATION OF HIGH VELOCITY IMPACT ON CNT REINFORCED COMPOSITES EMPLOYING SINGLE STAGE GAS GUN

2021 ◽  
Author(s):  
D. MUNIRAJ ◽  
S. MUGHILARASAN ◽  
V. M. SREEHARI
Keyword(s):  
High Velocity ◽  
Composite Plate ◽  
Epoxy Composite ◽  
Impact Load ◽  
Single Stage ◽  
High Velocity Impact ◽  
Velocity Impact ◽  
Weight Percentage ◽  
Impact Performance ◽  
Gas Gun

Composite plays a significant role in the field of aerospace due to its excellent mechanical properties, nevertheless, they are highly susceptible to out-of-plane impact load. Fibre-reinforced composite fails effortlessly under impact load and absorb energy through damage mechanics rather than deformation. The present study investigates the damage behaviour of the CNT reinforced carbon fibre-epoxy composite under high velocity impact using single stage gas gun. Composite plates were fabricated with 0 to 0.6 weight percentage content of CNT as reinforcement using vacuum assisted resin transfer moulding. A series of impact test with various impact energy was carried out on carbon/epoxy composite plate to study the impact performance. From the experimentation it was observed that the 0.3 weight percentage CNT addition provides the optimum impact performance. Damage characterization was performed for various impact velocity based on the micro and macro scale damage area. Knowledge of the damage behaviour of CNT reinforced carbon fibreepoxy composite plate under high velocity impact loads is essential for both the product development and material selection in the aerospace application.

Failure Analysis of Hybrid Armor Under High Velocity Impact

2000 ◽  
Author(s):  
Hassan Mahfuz ◽  
Yuehui Zhu ◽  
Wahid A. Mamun ◽  
Anwarul Haque ◽  
Shaik Jeelani
Keyword(s):  
Failure Analysis ◽  
High Velocity ◽  
Material Model ◽  
Fe Model ◽  
High Velocity Impact ◽  
Depth Of Penetration ◽  
Velocity Impact ◽  
Rubber Layer ◽  
Gas Gun ◽  
Set Up

Abstract Failure analysis of hybrid integral armor has been performed using finite element method. LS-DYNA3D code has been employed to investigate the response of an integral armor under high velocity impact. A 3-D FE model consisting of the various layers of the armor has been developed and subjected to transient dynamic loading. The analysis is based on actual experiments conducted in a gas gun set up. V50 velocity for a Fragment Simulating Projectile (FSP) has been considered, and the corresponding responses have been investigated to assess the failure of the armor at the ballistic limit. The investigation consisted of three successive studies; first, a base model was developed to have preliminary ideas about the energy absorption and the depth of penetration. Second, interface gap elements were introduced at the rubber interfaces, as the delamination across the rubber layer seemed critical in the failure of the armor. Third, a user defined material model has been introduced to account for the fracture behavior of ceramic. Details of the development of the models, and the analysis of failure are presented in this paper.

Dynamic Deformation and High Velocity Impact Behaviors of Ti-6Al-4V Alloys

2007 ◽  
Vol 539-543 ◽  
pp. 2269-2274 ◽  
Author(s):  
J.Y. Kim ◽  
In Ok Shim ◽  
H.K. Kim ◽  
S.S. Hong ◽  
Soon Hyung Hong
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
High Velocity ◽  
High Strain ◽  
Strain Hardening Exponent ◽  
High Velocity Impact ◽  
Test Results ◽  
Compression Tests ◽  
Velocity Impact ◽  
Deformation Behaviors

Deformation behaviors under quasi-static and dynamic compression and high velocity impact condition of Ti-6Al-4V ELI (extra low interstitial) alloys in two different conditions were investigated. Mill annealed (MA) alloy, consisted of equiaxed α, and thermomechanically treated (TMT) alloy, consisted of mixed structure of equiaxed α and transformed β, were prepared. Compression tests were performed in low strain rate regime using hydraulic testing machine and were performed in high strain rate regime using split Hopkinson pressure bar. High velocity impact tests were also performed by impacting the test projectiles made of these alloys against a steel target at a velocity of ~400m/s. The compression test results showed that deformation behaviors were influenced by the strain hardening exponent at low strain rate regime, and by both the strain hardening exponent and the strain-rate hardening rate at high strain rate regime. TMT alloy showed higher strength but almost similar fracture strain as MA alloy at a high strain rate of ~6000/s, due to the effect of strain-rate hardening. The high velocity impact test results showed that the projectile of TMT alloy withstood without fracture at higher impact velocity, but the maximum amounts of deformation prior to crack were nearly the same for both alloys. These results were in accord with the results of compression tests at high strain rate regime, that is, higher strength but same fracture strain of TMT alloy compared to MA alloy.

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