Optimum design on suspension joint parts of GFRP composite bogie frame with H-shaped side beams for urban railway trains

Kim, Jun-Hwan; Shin, Kwang-Bok; Kim, Jung-Seok

doi:10.1007/s12541-012-0010-x

Cited by 16 publications

(7 citation statements)

References 8 publications

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“…In this case, needle punching number (Npn) is changed (10,20, and 50 times) to change structure of glass fiber mat. Diameter of needle is 1.753 mm.…”

Section: Experimental Methodsmentioning

confidence: 99%

Study on the fiber orientation during compression molding of reinforced thermoplastic composites

Kim

Lee

2014

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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In this study, effect of fiber morphology on orientation is evaluated. Therefore, intersection angle for chopped strand, fiber length, and structure of fiber mat is changed to make the corresponding specimens and the relationship between compression ratio and fiber orientation is derived. Factors for controlling flow of glass fiber are glass fiber and matrix. 3 types of specimens, they are heated in oven as blank. Secondary hot press is applied. During compression molding, flow of test specimen is restricted to longitudinal direction. Measurement area for fiber orientation is 50 mm × 50 mm area in length of molded part, and the image is processed to confirm fiber orientation function. Fiber orientation function value, which is an indicator for directionality of fiber, is increased along with longer fiber length and higher compression ratio. Higher needle punching number induces tangling of fibers, and less fiber orientation function can be achieved. Fewer needles punching number results the less interference between fibers and fiber orientation function is increased accordingly. Fiber orientation angle, an indicator for fiber directionality in composite, can be empirically estimated according to compression ratio and fiber morphology using the derived equations.

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“…In this case, needle punching number (Npn) is changed (10,20, and 50 times) to change structure of glass fiber mat. Diameter of needle is 1.753 mm.…”

Section: Experimental Methodsmentioning

confidence: 99%

Study on the fiber orientation during compression molding of reinforced thermoplastic composites

Kim

Lee

2014

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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“…Joint mechanism of bolt joint to integrate the bogie part has been studied by Kim et al [38]. The study improves the structural integrity by designing the optimum location of bolt joint for the suspension system.…”

Section: Figurementioning

confidence: 99%

On the Lightweight Structural Design for Electric Road and Railway Vehicles using Fiber Reinforced Polymer Composites – A Review

Arifurrahman¹,

Budiman²,

Aziz³

2018

IJSTT

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The main challenging issues of vehicles with electric propulsion are on the limited energy source due to relatively low battery capacity and low excitation of power traction. They can be tackled down by designing lightweight structures for frameworks and bodies of the vehicles. Composite materials which have a high strength to weight ratio are the best choice for designing and manufacturing the lightweight structures. A review of recent progress in utilization of the composite materials for electric vehicle structures is presented. It focuses on how the structures can support the electric vehicles to compete with internal combustion engine vehicles regarding their performance on the road. The utilization of composite material for structures of railway vehicles is also summarized. Furthermore, discussions are extended to the key technologies required for applying the composite materials in Indonesia such as composite-metal joint technology, fiber and matrix production technology, and numerical analysis competency for modeling the composite.

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“…Bogie frames are generally comprised of metallic materials, including SM490A steel or high strength steel [1]. However, recently, fiber-reinforced composites have been used to reduce the structural weight of the bogie [2][3][4][5][6]. This decreased weight reduces the amount of energy that is required to run the vehicle.…”

Section: Introductionmentioning

confidence: 99%

Distributed Strain Monitoring of Railway Composite Bogies Using a Brillouin Optical Correlation Domain Analysis System

et al. 2018

Self Cite

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The structural deformation of a bogie frame manufactured using a composite material was monitored in real time using a distributed optical fiber sensor. The bogie frame contained an internally embedded standard single-mode optical fiber. Performance tests were conducted by applying a vertical load to the middle of the side beams on each side of the composite bogie frame. The strain distribution was monitored using an optical fiber sensor. A distributed optical fiber sensor system based on the Brillouin optical correlation domain analysis (BOCDA) technique with a 3 cm spatial resolution was used. The distributed strain measured using the optical fiber correlated well with the finite element (FE) analysis data, confirming that the composite bogie frame was fabricated as designed. For a vertical load of 182 kN, the maximum strain, which occurred in the middle of the side frame, increased by 1.3 times, as compared with a vertical load of 140 kN. The experiment was able to verify the balance and the structural stability of the left- and right-hand-side beams. Furthermore, it could confirm that there was a concentrated load where the side beam and the crossbeam meet, owing to a mismatch during the assembly of the composite bogie frame.

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Optimum design on suspension joint parts of GFRP composite bogie frame with H-shaped side beams for urban railway trains

Cited by 16 publications

References 8 publications

Study on the fiber orientation during compression molding of reinforced thermoplastic composites

Study on the fiber orientation during compression molding of reinforced thermoplastic composites

On the Lightweight Structural Design for Electric Road and Railway Vehicles using Fiber Reinforced Polymer Composites – A Review

Distributed Strain Monitoring of Railway Composite Bogies Using a Brillouin Optical Correlation Domain Analysis System

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