Impact behavior of carbon fiber/epoxy composite manufactured by vacuum-assisted compression resin transfer molding

Aurrekoetxea, J.; Agirregomezkorta, A.; Aretxaga, G.; Sarrionandia, M.

doi:10.1177/0021998311401938

Cited by 14 publications

(7 citation statements)

References 15 publications

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“…At an impact energy of <10 J, only marginal fiber fracture and transverse cracks are observed in the impacted material, with no damage to the internal material. This result is different for composite laminates prepared by resin transfer molding . However, at an impact energy of <30 J, only fiber fracture and transverse crack failure are observed, with a relatively low crack depth and length.…”

Section: Analysis Of the Experimental Resultsmentioning

confidence: 77%

Examination of low‐velocity impact and mechanical properties after impact of fiber‐reinforced prepreg composites

Zhang

Tang

et al. 2018

Polymer Composites

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Fiber-reinforced prepreg composites are considered to be the most promising materials for aerospace applications. However, these composites are susceptible to impact during in-service phases. The impact can cause various types of damage, such as matrix cracks, delamination and fiber breakage, thereby considerably decreasing their mechanical properties. In this study, a series of experiments were carried out to investigate the LVI characteristics. The impact damage characteristics of the fiber-reinforced prepreg composites were examined; the influencing factors and rules of impact damage were investigated; and the damage process and failure mechanism were revealed. X-ray 3D computed tomography was employed to examine the internal damaged state of the fiber-reinforced prepreg composites. An experimental study was carried out to investigate their compression after impact performance. The results indicated that impact energy mainly affects damage failure. With increasing impact energy, the impact contact time decreases, while the impact force fluctuation increases. The damage zone was spherical, and the damaged area increased with energy. The impact damage led to the sharp decrease in the remaining compressive strength and stiffness of the material, and the residual compression strength and stiffness were decreased to 62.25 and 76.6%, respectively.

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Section: Analysis Of the Experimental Resultsmentioning

confidence: 77%

Examination of low‐velocity impact and mechanical properties after impact of fiber‐reinforced prepreg composites

Zhang

Tang

et al. 2018

Polymer Composites

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“…Chang et al 13 discussed the influence of mold opening distance, injection pressure, compression pressure, preheated mold temperature, resin temperature, and cure temperature on the ultimate strength of CRTM parts and found that using a low compression pressure and high resin temperature were significant methods for improvements in the mechanical properties of the part. Aurrekoetxea et al 14 investigated the impact behavior of carbon fiber/epoxy composites made by vacuum-assisted CRTM and showed that a 30.25-J penetration energy threshold was deduced from the energy plot.…”

Section: Introductionmentioning

confidence: 99%

Influence of processing variables on quality of unsaturated polyester/E-glass fiber composites manufactured by double-bag progressive compression method

Chang

Chen

2018

Advances in Mechanical Engineering

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A hybrid process of articulated resin transfer molding and vacuum-assisted resin infusion, called double-bag progressive compression method, has been invented to fabricate composite parts. In double-bag progressive compression method, the secondary bag is divided into several segments. During resin infusion, the double bag is drawn upward by vacuum, and the initial flow resistance offered by the loose preform is low. Once the resin infusion is completed, the vacuum on the segmented bags is progressively released to ambient pressure, and the segmental compression is sequentially performed until unnecessary resin is completely removed. This research is to experimentally investigate the influence of double-bag progressive compression method processing parameters, including vacuum pressure in the cavity, number of segments, initiating time of the next compression, temperature of the heated air, initiating segment of the heated air, initial height of the mold cavity, and excess infused resin, on the mechanical property of the part. The design of experiments adopts Taguchi’s method. Results show that the double-bag progressive compression method significantly reduces total filling time and maximally increases the flexural modulus of the part by 17.81% as compared with the typical vacuum-assisted resin infusion. A preferable parameter condition is proposed by taking both the flexural modulus and the operation complexity into account.

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“…Liquid composite molding (LCM) process with low-cost tooling, such as vacuum-assisted resin infusion molding (VARIM), has been widely used for large composite structures, including boat hull, wind turbine blade, and automobile chassis components. [4][5][6] However, its long cycle time makes it only be suitable for low and medium volumes of production. Accordingly, it has practical significance to shorten the cycle time of LCM process.…”

Section: Introductionmentioning

confidence: 99%

Rapid curing vacuum-assisted resin infusion molding using silicone rubber sheet heater and the effect of cooling process on the properties of carbon fiber/epoxy composites

Zhang

et al. 2015

Journal of Composite Materials

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Silicone rubber sheet heater-aided vacuum-assisted resin infusion molding was developed in order to shorten curing cycle time. Three kinds of cooling methods, including air cooling, air water cooling, and water cooling, were employed; the effects of cooling process on processing time, residual strains, and mechanical properties were experimentally studied. The residual strains generated in cooling stage were monitored by embedded strain gauges. The results showed that in order to avoid serious residual strains and lower mechanical properties, the cooling rate of the silicone rubber sheet heater-aided vacuum-assisted resin infusion molding process should be designed carefully. Slow cooling rate before glass transition temperature of the composites and rapid cooling rate after it might be a practical method to maintain both high processing efficiency and acceptable mechanical properties.

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Impact behavior of carbon fiber/epoxy composite manufactured by vacuum-assisted compression resin transfer molding

Cited by 14 publications

References 15 publications

Examination of low‐velocity impact and mechanical properties after impact of fiber‐reinforced prepreg composites

Examination of low‐velocity impact and mechanical properties after impact of fiber‐reinforced prepreg composites

Influence of processing variables on quality of unsaturated polyester/E-glass fiber composites manufactured by double-bag progressive compression method

Rapid curing vacuum-assisted resin infusion molding using silicone rubber sheet heater and the effect of cooling process on the properties of carbon fiber/epoxy composites

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