Experimental Study of Tensile Preloading Influence on the Mechanical Behaviour of Pseudo-Ductile Hybrid Composite under High-Velocity Impact

2021 ◽  
Vol 410 ◽  
pp. 642-648
Author(s):  
Nikita A. Olivenko ◽  
Oleg A. Kudryavtsev ◽  
Mikhail V. Zhikharev
Keyword(s):  
Experimental Study ◽  
Mechanical Behaviour ◽  
Hybrid Composite ◽  
High Velocity ◽  
Hybrid Composites ◽  
Fracture Pattern ◽  
Low Velocity Impact ◽  
High Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact

The hybridisation of fibre-reinforced plastics is one of the perspective technological methods that make it possible to reduce the sensitivity of polymer composites to stress concentration and increase their damage tolerance. In this case, hybridisation means a combination of different types of reinforcing fibres in one yarn, one layer or one package. In most published papers, the authors investigated the mechanical behaviour of hybrid fibre-reinforced plastic under static loading or low-velocity impact conditions only. At the same time, statically preloaded structures made of composite materials can also be subjected to high-velocity impact. Tensile or compressive preloading affects not only the amount of energy absorbed by the composite but also changes the deformation and fracture pattern. This paper presents the results of the experimental study of the mechanical behaviour of a woven carbon/aramid hybrid composite under tensile preloading and high-velocity impact. Pre-tensioned specimens of homogeneous and hybrid composites were subjected to a high-velocity impact by a steel spherical projectile with the velocities up to 900 m/s. The experimental results showed that the hybrid composite had the lowest sensitivity of the ballistic limit to the tensile preloading.

An experimental and numerical investigation on the low velocity impact response of thermoplastic hybrid composites

2017 ◽  
Vol 52 (7) ◽  
pp. 877-889 ◽  
Author(s):  
Aswani Kumar Bandaru ◽  
Shivdayal Patel ◽  
Suhail Ahmad ◽  
Naresh Bhatnagar
Keyword(s):  
Finite Element ◽  
Numerical Investigation ◽  
Energy Absorption ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Impact Response ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact ◽  
Two Hybrid

This paper presented an experimental and numerical investigation on the low velocity impact response of thermoplastic hybrid composites reinforced with Kevlar/basalt fabrics. Two hybrid and one Kevlar homogeneous composite laminates were manufactured with polypropylene as a resin. In the hybrid composites, one hybrid composite (H-1) was manufactured with alternate stacking of four layers of basalt and four layers of Kevlar and the second hybrid composite (H-2) was manufactured with four Kevlar layers on front face and four basalt layers on back face. Low velocity impact tests were performed using a drop-weight impact equipment at three different energies (25 J, 50 J and 75 J). Among the two hybrid composites H-1 hybrid composite exhibited 15.58–20.79% and 13.47–20.47% improvement in the peak force and energy absorption, respectively, than the H-2 hybrid composite. The peak force and energy absorption of Kevlar homogeneous composite was also improved by 10.07–14.37% and 5.38–11.29%, respectively, due to hybridization. A three dimensional (3D) dynamic finite element software, Abaqus/Explicit, was implemented to simulate the experimental results of low velocity impact tests. A user-defined material subroutine (VUMAT) based on Chang-Chang linear-orthotropic damage model was implemented into the finite element code. The predictions from numerical simulation were found to be in good agreement with the experimental results.

scholarly journals Low-Velocity Impact Behavior of Interlayer/Intralayer Hybrid Composites Based on Carbon and Glass Non-Crimp Fabric

Materials ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 2472 ◽  
Author(s):  
Chen Zhang ◽  
Yunfei Rao ◽  
Zhe Li ◽  
Wei Li
Keyword(s):  
Hybrid Composite ◽  
Composite Laminates ◽  
Hybrid Composites ◽  
Low Velocity Impact ◽  
Hybrid Structures ◽  
Impact Behavior ◽  
Absorbed Energy ◽  
Low Velocity ◽  
Velocity Impact ◽  
Impact Tests

Composites have gained wide use in structural applications; however, they are sensitive to impact damage. The use of hybrid composites is an effective way to overcome this deficiency. The effects of various hybrid structures of interlayer and intralayer warp-knitted fabrics with carbon and glass fibers on the low-velocity impact behavior of composite laminates were studied. Drop-weight impact tests were conducted on two types of interlayer, sandwich and intralayer hybrid composite laminates, which were compared with homogenous composite laminates. During low-velocity impact tests, the time histories of impact forces and absorbed energy by laminate were recorded. The failure modes were analyzed using the micro-CT (computed tomography) and C-scan techniques. The results revealed that the hybrid structure played an important role in peak force and the absorbed energy, and that the hybrid interface had an influence on damage modes, whereas the intralayer hybrid composite laminate damage was affected by the impact location. The intralayer hybrid laminate with C:G = 1:1 exhibited better impact resistance compared to the other hybrid structures.

On the low- and high-velocity impact behaviour of hybrid composite materials at room and extreme temperature

2021 ◽  
pp. 002199832110476
Author(s):  
Ilaria Papa ◽  
Federica Donadio ◽  
Vicente Sánchez Gálvez ◽  
Valentina Lopresto
Keyword(s):  
Hybrid Composite ◽  
High Velocity ◽  
Composite Laminates ◽  
Composite Structures ◽  
High Speed ◽  
Extreme Temperature ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact ◽  
The Impact

A demand raised is how to improve the survivability of aircraft and naval structures concerning low- and high-velocity impacts. Since fundamental failure is due to mainly by fracture, a fundamental understanding of both mechanisms and mechanics of the material is crucial. It is important to understand the deformation and damage mechanisms involved in the impact to improve the design of composite structures. Several approaches have been exploited to improve the impact damage resistance of composite laminates in different conditions. Among these, the development of composite laminates stacking different fibres in the same matrix results very interestingly. This paper deals to investigate on the high and low speed impact performance of hybrid composite configurations made of glass/carbon and basalt fibres. Low-velocity impact at penetration and high speed tests at different impact velocity were carried out at the room and low temperatures to evaluate the goodness of hybridization proposed and the temperature effect on the composite performances. Among the three proposals, a hybrid basalt carbon configuration was identified as the best both at low speeds and at high impact speeds for both temperatures tested.

scholarly journals Analysis of High Velocity Impact on Hybrid Composite Fan Blades

1980 ◽  
Vol 17 (10) ◽  
pp. 763-766 ◽  
Author(s):  
C. C. Chamis ◽  
J. H. Sinclair
Keyword(s):  
Hybrid Composite ◽  
High Velocity ◽  
High Velocity Impact ◽  
Velocity Impact

Dynamic Response of Smart Hybrid Composite Plate Subjected to Low-Velocity Impact

2007 ◽  
Vol 41 (19) ◽  
pp. 2347-2370 ◽  
Author(s):  
S.M.R. Khalili ◽  
A. Shokuhfar ◽  
F. Ashenai Ghasemi ◽  
K. Malekzadeh
Keyword(s):  
Dynamic Response ◽  
Hybrid Composite ◽  
Composite Plate ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact ◽  
Hybrid Composite Plate

scholarly journals Experimental and numerical analysis of high and low velocity impacts against neat and shear thickening fluid (STF) impregnated weave fabrics

2018 ◽  
Vol 183 ◽  
pp. 01044
Author(s):  
Djalel Eddine Tria ◽  
Larbi Hemmouche ◽  
Abdelhadi Allal ◽  
Abdelkader Benouali
Keyword(s):  
High Velocity ◽  
Shear Thickening ◽  
Force Sensor ◽  
Low Velocity Impact ◽  
Dynamic Force ◽  
Low Velocity ◽  
Shear Thickening Fluid ◽  
Velocity Impact ◽  
Pull Out ◽  
The Impact

This investigation aims to study the efficiency of STF impregnated plain-weave fabric made of Kevlar under high and low velocity impact conditions. The shear thickening fluid (STF) was prepared by ultrasound irradiation of silica nanoparticles (diameter ≈30 nm) dispersed in liquid polyethylene glycol polymer. STF impregnation effect was determined from single yarn pull-out test and penetration at low velocity using drop weight machine equipped with hemi-spherical penetrator and dynamic force sensor. Force-displacement curves of neat and impregnated Kevlar were analysed and compared. Also, the STF impregnation effect on Kevlar multilayers was analysed from high velocity impact tests using 9mm FMJ bullet at 390 m/s. After impact, Back face deformation (BFD) of neat and impregnated Kevlar layers were measured and compared. Results showed that STF impregnated fabrics have better energy absorption and penetration resistance as compared to neat fabrics without affecting the fabric flexibility. When relative yarn translations are restricted (e.g. at very high levels of friction), windowing and yarn pull-out cannot occur, and the fibres engaged with the projectile fail in tension that leads to fabric penetration. Microscopy of these fabrics after testing have shown pitting and damage to the Kevlar filaments caused by the hard silica particles used in the STF. Mesoscopic 3D Finite Element models were developed using explicit LS-DYNA hydrocode to account for STF impregnation by employing the experimental results of yarn pull-out tests, low and high velocity impacts. It was found that friction between fibers and yarns increase the dissipation of energy upon impact by restricting fiber mobility, increasing the energy required for relative yarn translations and transferring the impact energy to a larger number of fibers.

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