Fabrication and experimentation of FRP helical spring

Ekanthappa, J.; Shankar, G.S. Shiva; Amith, B M; Gagan, M

doi:10.1088/1757-899x/149/1/012098

Cited by 13 publications

(7 citation statements)

References 5 publications

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“…Spring stiffness, k= However, small amount of alloying elements in mild steel makes it comparatively inexpensive when compared to other steels [15]. The price, weldability, and machinability of this mild steel make it a popular customer choice.…”

Section: Designmentioning

confidence: 99%

Numerical and Experimental Study on Optimization of Coil Springs used in Vehicles’ Suspension System

Rahman

Abdullah

2021

J. eng. adv.

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In general, the suspension systems are used to absorb vibrations, bump, rolls, dip from shock loads due to road surface irregularities. It performs its major role without affecting the vehicles’ stability and overall handling during operation. Coil springs are used as suspension element in light vehicles to attenuate unwanted vibrations. A spring is an elastic object used to store mechanical energy and it can be twisted, pulled or extended by some force and can return to its initial position when the force is released. In this study, mild steel material was taken into consideration in designing and fabricating coil springs. Theoretical and experimental investigations were conducted to calculate springs’ stiffness and to make validation between them. Three model of springs having coils 10, 11, 14 respectively are designed which have slight stiffness difference both theoretically and experimentally. The models were analyzed to determine mechanical behaviors for randomly chosen loading conditions ranging from 29.4 N to 176.4 N which are better suited with spring size. It is noted from both numerical and experimental investigations that deflection is high when the stiffness is less and vice-versa. In addition, shear stress formation increases with the increment of stiffness and applied load. Hence, springs having high stiffness are used in suspension system to reduce vibration and other disturbances. This study shows springs of having high stiffness are comparatively compact in size and cost economic as well.

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Section: Designmentioning

confidence: 99%

Numerical and Experimental Study on Optimization of Coil Springs used in Vehicles’ Suspension System

Rahman

Abdullah

2021

J. eng. adv.

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“…Therefore, researchers expect that composite springs exhibit high fatigue life in comparison with steel springs. However, they observed that GFRP composite spring has lower stiffness than the equivalent steel one [17]. Kara Y. and Akbulut H. studied mechanical behavior of carbon fiber reinforced and carbon nanotube (CNT) additive epoxy composite helical springs.…”

Section: Dimensionsmentioning

confidence: 99%

A Review: Fiber Reinforced Polymer Composite Helical Springs

Kara¹

2017

JOURNAL OF MATERIALS SCIENCE AND NANOTECHNOLOGY

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“…Oussama Zebdi [ 26 , 27 ] used a multi-objective optimization algorithm to calculate the optimal parameters for minimizing mass and maximizing the stiffness of an HCS. Ekanthappa J [ 28 ] verified that adding micron-size graphite powder into the continuous glass fiber reinforced polymer could increase the failure load of the HCS. Bok-Lok Choi [ 29 ] designed an HCS using continuous carbon fiber, which had excellent performance and lighter weight.…”

Section: Introductionmentioning

confidence: 99%

A Biomimetic Basalt Fiber/Epoxy Helical Composite Spring with Hierarchical Triple-Helix Structures Inspired by the Collagen Fibers in Compact Bone

et al. 2022

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The lightweight property of helical composite spring (HCS) applied in the transportation field has attracted more and more attention recently. However, it is difficult to maintain stiffness and fatigue resistance at the same time. Herein, inspired by collagen fibers in bone, a bionic basalt fiber/epoxy resin helical composite spring is manufactured. The collagen fibers consist of nanoscale hydroxyapatite (increases stiffness) and collagen molecules composed of helical amino acid chains (can increase fatigue resistance). Such a helical structure of intercalated crystals ensures that bone has good resistance to fracture. Specifically, we first investigated the effect of adding different contents of NS to basalt fibers on the stiffness and fatigue properties of an HCS. The results show that the optimal NS content of 0.4 wt% resulted in 52.1% and 43.5% higher stiffness and fatigue properties of an HCS than those without NS, respectively. Then, two braided fiber bundles (TS-BFB) and four braided fiber bundles (FS-BFB) were designed based on the helical structure of amino acid chains, and the compression tests revealed that the maximum load resistance of TS-BFB and FS-BFB was increased by 29.2% and 44%, respectively, compared with the conventional single fiber bundle (U-BFB). The superior mechanical performance of TS-BFB and FS-BFB is attributed to the more adequate bonding of 0.4 wt% NS to the epoxy resin and the multi-fiber bundles that increase the transverse fiber content of the spring. The findings in this work introduce the bionic collagen fiber structure into the design for an HCS and provide a new idea to improve the spring performance.

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Fabrication and experimentation of FRP helical spring

Cited by 13 publications

References 5 publications

Numerical and Experimental Study on Optimization of Coil Springs used in Vehicles’ Suspension System

Numerical and Experimental Study on Optimization of Coil Springs used in Vehicles’ Suspension System

A Review: Fiber Reinforced Polymer Composite Helical Springs

A Biomimetic Basalt Fiber/Epoxy Helical Composite Spring with Hierarchical Triple-Helix Structures Inspired by the Collagen Fibers in Compact Bone

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