Advances and Trends in Forming Curved Extrusion Profiles

Zhou, Wenbin; Shao, Zhutao; Yu, Junquan; Lin, Jianguo

doi:10.3390/ma14071603

Cited by 45 publications

(21 citation statements)

References 89 publications

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“…It is essential considering that the batteries with higher energy density are more significant than traditional ICEVs, and electricity demand may increase when EV adoption increases. [13][14][15] Moreover, Yang et al 16 added that battery degradation could primarily increase the energy consumption and greenhouse gas (GHG) emission in EVs per distance traveled. However, to reduce energy consumption when EV adoption increases, ESSs with both higher energy and power density could decrease energy consumption and GHG emissions from EVs.…”

Section: Introductionmentioning

confidence: 99%

“…Besides, the higher energy and power‐density ESSs help reduce overall vehicle weight 12 in terms of EVs when using aluminum extrusion to decrease energy or electricity consumption and increase travelling distance. It is essential considering that the batteries with higher energy density are more significant than traditional ICEVs, and electricity demand may increase when EV adoption increases 13‐15 . Moreover, Yang et al 16 added that battery degradation could primarily increase the energy consumption and greenhouse gas (GHG) emission in EVs per distance traveled.…”

Section: Introductionmentioning

confidence: 99%

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Hybrid energy storage system topology approaches for use in transport vehicles: A review

Lencwe

Chowdhury

Olwal

2022

Energy Science & Engineering

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High peak current for vehicle starting, recuperation of regenerative braking energy, longer battery lifespan, and more significant acceleration among others in modern transport vehicles (TVs) require increased battery size. Moreover, batteries have high energy density and low power density. Therefore, a big battery pack can weigh more, shorten its lifespan, increase vehicle total mass, and increase battery degradation costs. On the one hand, higher power energy storage systems (ESSs) such as supercapacitors, lithium-ion capacitors, and superconducting magnetic ESSs have a lower energy density, higher power density, and greater lifespan. Thus, to satisfy the requirements of modern TVs, the combination of higher energy and higher power density can provide enhanced performance and a longer battery lifespan for these vehicles. Available research publications in the literature have addressed a similar problem. However, these publications have reported the findings separately, providing various research and conclusions.Currently, no available literature has compiled an intelligible and combined analysis for addressing hybrid ESS configurations, sizing methods, and energy management strategies to create further knowledge in this domain. There is a need to consolidate a compact and insightful knowledge toward this research direction for a more significant societal and industrial impact. This paper critically reviews the hybrid higher energy density batteries and higher power density ESSs used in TVs. It discusses the integration configurations, applications, and provides sizing methods to achieve the best hybrid energy storage systems (HESSs). Also, applied control methods are described for these HESSs such that the overall system performance matches the vehicle requirements. Lastly, it provides insights and future research direction for HESS configuration, sizing, and control.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hybrid energy storage system topology approaches for use in transport vehicles: A review

Lencwe

Chowdhury

Olwal

2022

Energy Science & Engineering

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“…Sheets and extrusions have been widely used to reduce curb weight and provide considerable convenience and safety in service [9][10][11]. Especially, aluminium extrusions are nowadays extensively used in automobiles thanks to their gradually enhanced capabilities [12]. New emerging design strategies such as the ongoing shift to electric cars also drive huge market demands, e.g., manufacturing battery housing cases.…”

Section: Introductionmentioning

confidence: 99%

“…Extrusion is an effective method for producing long 2D profiles that can be cut, shaped, and joined with other parts to generate advanced 3D configurations. However, it is challenging to achieve high dimensional accuracy for aluminium profiles owing to the severe plastic deformation and even complex microstructure evolution during the extrusion processes [12][13][14][15]. The typical dimensional defects of extruded U-channel profiles include open-gap, sidewall inclination, and bottom convexity, which could directly affect the subsequent manufacturing operations such as precision forming/bending, robotic welding, and automatic assembly [13,[16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Deformation Characteristics in a Stretch-Based Dimensional Correction Method for Open, Thin-Walled Extrusions

Zhou

Welo

et al. 2021

Metals

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Dimensional accuracy of incoming components is crucial for automated welding and assembly in mass volume production. However, thin-walled extrusions made to industrial standards show severe dimensional variations, including gap opening, sidewall inclination, local convexity, and so on. Thus, one major challenge is to provide a low-cost correction method to improve the dimensional accuracy at a level demanded by automated assembly and/or product fit-up. A novel correction method called transverse stretch and local bending (TSLB) has recently been developed, enabling one to efficiently correct the dimensional deviations in thin-walled, U-channel profiles at a low cost. However, the lack of in-depth understanding of the underlying mechanism makes it challenging to efficiently optimise and control the process. In this study, the feasibility of this new technique was experimentally validated by four groups of TSLB tests with different profile dimensions, showing a dimensional accuracy improvement of about 92% compared with the as-received parts. The evolution of the critical dimensional characteristics, including gap opening and bottom convexity, is analysed numerically throughout four stages consisting of inserting, releasing, calibration, and springback. It is found that the inserting stage greatly reduces the dimensional deviations in a pure bending state, while the calibration stages further minimise the deviations in the bending and transverse stretching combined state. In addition, the wedge angle of the tool is found to be critical to the dimensional accuracy improvement. The low wedge angle facilitates the correction of sidewall inclination and gap opening, while the high wedge angle contributes to mitigating bottom convexity. The overall outcome of this study enhances the fundamental understanding of the effects of in-process stretching and local-bending on the dimensional capabilities of U-channel extrusions. This can ultimately generate guidelines that will lead to new application areas of aluminium extrusions in highly competitive marketplaces.

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“…To improve aesthetics and expand the range of structural design concepts, curved profiles are extensively used as constructional elements for architectural structures such as windows and building facades/fronts, including sunshades and light shelves [1,2]. The combination of curved glass and architectural structure provides more possibilities for the interactions between space and light.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study on Cold-Bending Stress and Its Reverse-Coupling Effect with the Uniform Load on Cold-Bent SGP Laminated Glass

2021

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SentryGlas® Plus (SGP) laminated glass is a novel type of safety glass with high strength and stiffness. On the other hand, cold bending is a novel technique to build curved glass curtain walls, and is advantageous in terms of its greater energy efficiency and cost-effectiveness as well as its simple construction processes. The cold bending of SGP laminated glass could result in broad applications for the material and provide huge economic benefits in the field of glass curtain wall construction. To study cold-bending stress and its reverse-coupling effect with the uniform load in SGP laminated glass panels, single-corner cold-bending tests, uniform load tests, and ultimate capacity tests were conducted on eight pieces of such panels with different cold-bending curvatures and interlayer thicknesses. The results revealed that cold-bending stress in the glass panels under single-corner cold bending demonstrated a saddle-shaped distribution, with the maximum and second-largest cold-bending stresses located near the corner of the short side and the long side adjacent to the cold-bending corner, respectively. The cold-bending stress and coupling stress increased nonlinearly as the cold-bending curvature rose and the interlayer thickness became greater. Moreover, cold-bending curvature was a factor that affected the cold-bending stress and coupling stress more significantly than the interlayer thickness. The ultimate capacity and ultimate deflection of the glass panels decreased as the cold-bending curvature and interlayer thickness grew.

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Advances and Trends in Forming Curved Extrusion Profiles

Cited by 45 publications

References 89 publications

Hybrid energy storage system topology approaches for use in transport vehicles: A review

Hybrid energy storage system topology approaches for use in transport vehicles: A review

Deformation Characteristics in a Stretch-Based Dimensional Correction Method for Open, Thin-Walled Extrusions

An Experimental Study on Cold-Bending Stress and Its Reverse-Coupling Effect with the Uniform Load on Cold-Bent SGP Laminated Glass

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