Analysis of the composite I-beam reinforced with PU foam with the addition of chopped glass fiber

Lacki, P.; Derlatka, Anna; Winowiecka, J.

doi:10.1016/j.compstruct.2019.03.036

Cited by 18 publications

(7 citation statements)

References 59 publications

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“…1,2 In recent years, microcellular foam technology has rapidly emerged, and its applications have been increasing. 3 The microcellular foam process can reduce both the weight and the warpage of injection-molded parts and improve the apparent quality, sound insulation, heat insulation, and vibration isolation performance of various products. 4 , 5 The use of microcellular foaming technology in long glass fiber reinforced materials can confer both advantages mentioned above on a range of products, leading to this technology being widely used in industrial manufacturing, aerospace, automobile manufacturing, and other areas.…”

Section: Introductionmentioning

confidence: 99%

Effective elastic modulus of foamed long glass fiber reinforced polypropylene: Experiment and computation

Cai

Zhao

Huang

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part L:

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The cross-section of an injection-molded plate of foamed long glass fiber reinforced polypropylene was analyzed using scanning electron microscopy. The distribution of the glass fiber orientations and the microcellular structure in the thickness direction were also studied. A multilayer representative volume element was constructed based on the fiber orientation tensors and the cell distribution. Nested and two-step homogenization methods based on the Mori–Tanaka and Voigt models were used to homogenize each layer of the representative volume element. Finally, classic laminate theory was used to obtain the effective elastic modulus of the material. The computed elastic moduli of the single-layer and multilayer representative volume element models with different loading directions predicted by the homogenization and finite element methods were compared with the experimental results. We found that the constructed multilayer representative volume element model can predict the elastic moduli of the foamed glass fiber reinforced polypropylene effectively and that the predicted results were accurate and stable.

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Section: Introductionmentioning

confidence: 99%

Effective elastic modulus of foamed long glass fiber reinforced polypropylene: Experiment and computation

Cai

Zhao

Huang

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…This solution is mainly used to solve the static problem of double-layer composite curved beams with fl exible shear connections in the tangential direction. Lacki et al [21] studied the effect of glass fi ber content on the bending resistance of composite I-beam. By adding glass fi ber content, the transverse torsional buckling of the I-beam web was reduced and the stiffness was improved.…”

Section: Introductionmentioning

confidence: 99%

Bending Failure Behavior of the Glass Fiber Reinforced Composite I-Beams Formed by a Novel Bending Pultrusion Processing Technique

Zhu

Cao

Zhang

et al. 2022

Autex Research Journal

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The glass fiber reinforced resin matrix composite I-beams were designed and formed via a type of novel bending pultrusion processing technique, and the three-point bending tests were carried out to analyze the mechanical bending performances. The obtained results show that the main failure mode of the composite I-beam under the bending load is the upper structure (top flange) cracks along the length direction of the fibers, and the cracks simultaneously propagate downwards in the vertical direction. The bifurcated cracks can be found at the junction area between the top flange and web. In addition, the main bending failure mechanism of the composite I-beam includes the matrix cracking, propagation of cracks, and final fracture failure. In particular, noting that when the crack reaches the I-shaped neck position, the lateral bifurcation occurs, and the resulting secondary cracks further extend in two directions, which leads to the serious damage between the top flange and web, and the ultimate fracture failure occurs.

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“…Because the welded material is not melted in the RFSSW process, the crack and pore which are common welding defects in resistance spot welding can be avoided. The RFSSW has been approved to be a promising technology by recent studies [3,4].…”

Section: Introductionmentioning

confidence: 99%

Microstructures Evolution in Refill Friction Stir Spot Welding of Al-Zn-Mg-Cu Alloy

Zhao¹,

Dong²,

Wang³

et al. 2020

Metals

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In this study, Al-Zn-Mg-Cu alloy was refill friction spot welded, and the precipitates, dislocation, recovery, and recrystallization characteristics were focused. In the stir zone (SZ), continues dynamic recrystallization occurs under the intense plastic deformation. All the original GP (II) zones and η' precipitates dissolved into the aluminum matrix under the welding heat input, and the stable η and E precipitates remained. In the thermo-mechanically affected zone (TMAZ), high-density dislocations and subgrains boundaries can be observed. The continued dynamic recrystallization was not activated and only dynamic recovery occurs. Sub-boundaries and high-density dislocations in this zone can be observed. In this zone, the η precipitates are coarsened and dissolution is the main evolution mechanism for the GP (II) zones and η' precipitates. In the heat-affected zone (HAZ), no dislocation was induced and all the initial precipitates were coarsened under the welding heat input. The HAZ, the TMAZ, and the SZ constitute a soft region in the refill friction stir spot welding (RFSSW) joint, and the minimum value located at the interface between the HAZ and the TMAZ.

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Analysis of the composite I-beam reinforced with PU foam with the addition of chopped glass fiber

Cited by 18 publications

References 59 publications

Effective elastic modulus of foamed long glass fiber reinforced polypropylene: Experiment and computation

Effective elastic modulus of foamed long glass fiber reinforced polypropylene: Experiment and computation

Bending Failure Behavior of the Glass Fiber Reinforced Composite I-Beams Formed by a Novel Bending Pultrusion Processing Technique

Microstructures Evolution in Refill Friction Stir Spot Welding of Al-Zn-Mg-Cu Alloy

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