Sheet forming process of carbon fiber reinforced plastics for lightweight parts

Ye, Jun; Ikeuchi, Katsuyoshi

doi:10.1016/j.cirp.2012.03.129

Cited by 97 publications

(49 citation statements)

References 11 publications

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“…Research results show, for example the improvement in structural vehicle crashworthiness that is achieved by using FRP in specific automobile structures to serve as collapsible crash-energy absorbers [22]. The use of these structures is restricted to high-priced vehicles on account of the long cycle times required in the complex manufacturing process, the high material costs and other challenges [23,24]. The competitiveness of these structures thus depends on bringing down the costs by optimising the technologies involved, so as to permit simple and robust manufacturing processes or shorter cycle and lead times [25].…”

Section: Approaches To Automotive Lightweight Constructionmentioning

confidence: 99%

Hybrid Structures Consisting of Sheet Metal and Fibre Reinforced Plastics for Structural Automotive Applications

Lauter

Tröster

Reuter

2013

Advanced Composite Materials for Automotive Applications

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Section: Approaches To Automotive Lightweight Constructionmentioning

confidence: 99%

Hybrid Structures Consisting of Sheet Metal and Fibre Reinforced Plastics for Structural Automotive Applications

Lauter

Tröster

Reuter

2013

Advanced Composite Materials for Automotive Applications

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“…Hallander et al [12] studied wrinkling of epoxy/IM fiber composite laminates (toughened with thermoplastic particles) during vacuum forming into a channel section. Yanagimoto and Ikeuchi [13] used two dummy metallic sheets on two sides of epoxy/ carbon fiber composite laminates to increase formability and overcome fiber fracture during stamp forming. Henninger and Friedrich [14] formed polypropylene-and polyamide-based woven glass fiber composite laminates into hat sections using a roll-forming process.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the effect of temperature and layup on the press forming of polyvinyl chloride-based composite laminates and fiber metal laminates

Zal

Naeini

Bahramian

et al. 2016

Int J Adv Manuf Technol

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Semi-crystalline thermoplastic-based composite laminates and fiber metal laminates have a narrow forming temperature window, which limits formability of these products. The intention of this study was investigation of nonmelting amorphous polyvinyl chloride as a proper matrix to increase the formability and forming temperature window of these products. For this, [45/−45] and [0/90] layups of polyvinyl chloride-based composite laminates and fiber metal laminates were produced using the film-stacking procedure and later press formed into channel sections at six temperatures in the range of 80 to 200°C. The effects of the layups and forming temperatures on the forming loads and spring back of the formed profiles were measured, and their effects on the fiber buckling, wrinkling, and delamination of the profiles were evaluated using optical microscope images. The effects of layups and forming temperatures on the deformation mechanisms were also analyzed using the grid strain analysis method. Of the fiber metal laminates, 160°C was found as the minimum forming temperature, and for the composite laminates, 120 and 160°C were found as the minimum proper forming temperatures of [45/−45] and [0/90] layups, respectively. Finally, the forming temperature windows and formability of polyvinyl chloride matrix composite laminates and fiber metal laminates were found higher than semi-crystalline matrices.

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“…The nominal thickness of the initial laminated carbon/epoxy sheet was 0.6 mm. Figure 15 shows the thickness distribution of standard and thin-ply composites for a 120°C drawing temperature and a stroke of 3 mm at each position (1)(2)(3)(4)(5) along the a-and b-axis. The obtained results show the thinning ratio for the standard and thin-ply laminates in the plate (positions 1 and 5), along the die profile radius (positions 2 and 4) and in the side wall (position 3).…”

Section: Elliptical Cup Drawing Processmentioning

confidence: 99%

“…Sandwich forming has previously been applied to the forming of solidified CFRP sheets with a dummy metallic sheet used in the process. 4,5 In this case, aluminum alloy 1050 was chosen as the dummy sheet for sandwich forming, as shown in Figure 4, which has the benefits of increasing the bending radius when the elongation increases, as well as reducing defect formation in the compressive zone. Likewise, a polymer sheet can normally be easily formed by increasing the temperature to above T g and stretching it into a mold with the desired shape.…”

Section: Setup Of Drawing Processmentioning

confidence: 99%

“…3 The increased use of RTM or SMC to manufacture CFRP structures may reduce the cost and the production cycle time required to manufacture CFRP parts, increasing the flexibility of the manufacturing process. A novel press-forming method for CFRP sheets for their use as lightweight parts has been proposed, 4 which is an attractive alternative to the RTM and SMC. By stamping solidified CFRP sheets under cold and warm conditions, high-strength structures can be formed with high productivity and a low cost.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical properties and drawing process of multilayer carbon-fiber-reinforced plastic sheets with various prepreg thicknesses

Sasayama

2017

Advances in Mechanical Engineering

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In this study, multilayer carbon-fiber-reinforced plastic sheets with various pre-impregnated thicknesses were developed. Specimens were fabricated by the hand lay-up process from standard and thin-ply unidirectional carbon fiber/epoxy resin prepreg sheets, which were also cured in an autoclave. Tensile tests from room temperature to 120°C and interlaminar shear strength tests at room temperature were first conducted to investigate the mechanical behavior of the laminated carbon-fiber-reinforced plastic sheets. Furthermore, with a view to increase the formability, in this study, a state-of-theart drawing process for laminated carbon-fiber-reinforced plastic sheets at an elevated temperature was investigated, and the drawing ratio was also determined for the case of elliptical cup drawing. To achieve this, the relation between the punch load and stroke, and the distribution of thickness were determined by measurement. To clarify the forming behavior in this case, evaluation of the effect of increasing the number of drawing steps was performed to investigate the deformation history. The microstructures showed reduced delamination with increasing radius of the punch. The experimental results obtained in this study are expected to help designers perform the press forming of multilayer carbon fiber/epoxy resin sheets.

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Sheet forming process of carbon fiber reinforced plastics for lightweight parts

Cited by 97 publications

References 11 publications

Hybrid Structures Consisting of Sheet Metal and Fibre Reinforced Plastics for Structural Automotive Applications

Hybrid Structures Consisting of Sheet Metal and Fibre Reinforced Plastics for Structural Automotive Applications

Investigation of the effect of temperature and layup on the press forming of polyvinyl chloride-based composite laminates and fiber metal laminates

Mechanical properties and drawing process of multilayer carbon-fiber-reinforced plastic sheets with various prepreg thicknesses

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