Effect of High Velocity Ballistic Impact on Pretensioned Carbon Fibre Reinforced Plastic (CFRP) Plates

Kamarudin, Kamarul-Azhar; Hamid, I. Abdul

doi:10.1088/1757-899x/165/1/012005

Cited by 7 publications

(5 citation statements)

References 16 publications

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“…From the 45-degree graph, the maximum value of the kinetic energy computed when 60 km/h velocity impact is applied is 178 kJ. The kinetic energy will decrease in an increasing of time and does not stop until the end of the simulation which is at 0.05 s as 2.90 kJ is the minimum value of the kinetic energy [14,15]. While, for 70-degree the maximum kinetic energy for the car frame is 178 kJ and decreases along the time of the simulation until reached the minimum value of 16.1 kJ.…”

Section: Results For Steel 321 Energy Balancementioning

confidence: 99%

Crash Investigation on Frontal Vehicle Chassis Frame using Finite Element Simulation

Ariffin

Kamarudin

Abdullah

et al. 2022

ARASET

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Car chassis can be considered as the primary protective shield for the safety of the passenger during rear-end crashes. This study focuses on the deformation and failure behavior of the frontal car A-pillar chassis frame when subjected to collision with a heavy vehicle. Two different angles of the A-pillar chassis frame use are 45-degree and 70-degree. The crash simulation is conducted by using Finite Element software under the explicit dynamic. The car chassis frame geometries are designed by using SolidWorks 2021 and imported to the finite element software while a rigid block is designed in the finite element software as a rigid body to replicate the heavy vehicle. The chassis body is simulated for two types of materials, Aluminum alloy, and steel. The car speed impacted at 60 km/h. Results show that the intrusion of a rear barrier for 45 degrees of aluminum alloy will stop at 0.03 s but for 70 degrees it will intrude the car frame until the end. For the steel car frame, 45 degrees design is capable to withstand the intrusion of a rear barrier from a serious deform but for 70 degrees the intrusion will continue until the end. Car frame crush behavior, energy dissipation, and vehicle decelerations from the crash simulation were observed.

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Section: Results For Steel 321 Energy Balancementioning

confidence: 99%

Crash Investigation on Frontal Vehicle Chassis Frame using Finite Element Simulation

Ariffin

Kamarudin

Abdullah

et al. 2022

ARASET

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“…Such models are present in literature for ductile materials such as the primary AA7010 and also for composites that behave in a brittle manner [27][28][29][30]43]. Using FEA, much more can be learned about the material in question such as its ballistic limit [31], oblique impact behaviour [32], ballistic response [33] and real life complex simulations [34] etc. However, to establish a numerical model, experimental data is required for validation [35].…”

Section: Introductionmentioning

confidence: 99%

Quantitative Characterization of the Perforation Behaviour of Direct Recycled Aluminum Alloy 6061 Plates Subjected to High-Velocity Impact

Irfan Alias Farhan Latif,

Mohd Khir Mohd Nor,

Nur Kamilah Yusuf

et al. 2024

ARAM

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This study aims to establish the perforation behaviour of direct recycled AA6061 to help establish the properties of the current most optimized direct recycled AA6061 through the hot press forging technique. This was achieved by subjecting direct recycled AA6061 plates of varying thickness to high-velocity impacts using a single-stage gas gun setup. The impactor is a hemispherical steel projectile of 13mm in length and 8.5mm in diameter. Plates of 3,4,5 and 10mm thickness were tested at velocities ranging from 120 m/s to 402 m/s. The deformation profiles of the impacted plates were captured and analyzed to quantitatively establish the perforation behaviour of recycled AA6061 plates. The plates showed irregular and non-axis symmetric patterns of deformation hinting the material exhibits anisotropic properties. The changes in the deformation profile were investigated in relation to changes in impact velocities and plate thickness were made to understand how they impact the profile. The deformation area was observed to be decreasing when the bullet impact velocity was increased. Higher velocity impact events lead to more material ejection from the plate in the form of fragmentation. Additionally, the deformation zone was observed to be getting smaller with an increase in the thickness of the plate. Thicker plates were found to have more fragmentation compared to thinner plates. Ductile failure characteristics such as petal formation and plugging were observed along with brittle characteristics such as fragmentation and conal fractures. Lower-velocity impacts lead to more energy absorbed by the target plates. Thicker plates observed more of the bullet’s energy. Through experimentation, the deformation behaviour of the directly recycled AA6061 material was established. This data can be used as a base for further research into the material’s behaviour characterisation.

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“…A damage model characterized by the volume of impact damage was proposed, and the damage development and fragmentation of glass plates were divided into three stages: first, for a loading rate of low intensity and long impact duration, simple fragmentation occurred, where the initiation of cracks were observed at the same location of the micro-defect without crack branching; second, multistage fractures caused by the bifurcation of many cracks appeared, and radial and tangential cracks were formed; the final stage was to complete the perforation. For ductile materials, Kamarudin & Hamid (2017) carried out an experimental investigation on thin plates made of carbon fibre reinforced plastic (CFRP) impacted by hemispherical and blunt projectiles at various velocities. It was also observed that a hemispherical projectile split a target plate at a lower impact velocity compared with a flat projectile.…”

Section: Introductionmentioning

confidence: 99%

Ice breaking by a high-speed water jet impact

Yuan

et al. 2022

J. Fluid Mech.

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Ice breaking has become one of the main problems faced by ships and other equipment operating in an ice-covered water region. New methods are always being pursued and studied to improve ice-breaking capabilities and efficiencies. Based on the strong damage capability, a high-speed water jet impact is proposed to be used to break an ice plate in contact with water. A series of experiments of water jet impacting ice were performed in a transparent water tank, where the water jets at tens of metres per second were generated by a home-made device and circular ice plates of various thicknesses and scales were produced in a cold room. The entire evolution of the water jet and ice was recorded by two high-speed cameras from the top and front views simultaneously. The focus was the responses of the ice plate, such as crack development and breakup, under the high-speed water jet loads, which involved compressible pressure ${P_1}$ and incompressible pressure ${P_2}$ . According to the main cause and crack development sequence, it was found that the damage of the ice could be roughly divided into five patterns. On this basis, the effects of water jet strength, ice thickness, ice plate size and boundary conditions were also investigated. Experiments validated the ice-breaking capability of the high-speed water jet, which could be a new auxiliary ice-breaking method in the future.

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Effect of High Velocity Ballistic Impact on Pretensioned Carbon Fibre Reinforced Plastic (CFRP) Plates

Cited by 7 publications

References 16 publications

Crash Investigation on Frontal Vehicle Chassis Frame using Finite Element Simulation

Crash Investigation on Frontal Vehicle Chassis Frame using Finite Element Simulation

Quantitative Characterization of the Perforation Behaviour of Direct Recycled Aluminum Alloy 6061 Plates Subjected to High-Velocity Impact

Ice breaking by a high-speed water jet impact

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