Innovative composites and hybrid materials for electric vehicles lightweight design in a sustainability perspective

Delogu, Massimo; Zanchi, Laura; Dattilo, Caterina Antonia; Pierini, Marco

doi:10.1016/j.mtcomm.2017.09.012

Cited by 96 publications

(36 citation statements)

References 25 publications

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“…Step 2. Construct the information gain calculation model based on formulas (6)- (8). Then, set up the ID3 model with features (e.g.…”

Section: Figure 2 the Edt Model For Autobody Lightweight Designmentioning

confidence: 99%

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An ExtensionDecision Tree Algorithm for Lightweight Design of Autobody Structure

Lü¹,

Wang²

2019

JESA

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The lightweight design of autobody involves multiple objectives and requires the collaboration between various disciplines. To improve the existing autobody lightweight designs, it is necessary to establish an accurate and objective evaluation method for lightweight effect. This paper proposes an extension decision tree (EDT) algorithm for lightweight design of autobody. The algorithm solves the contradictions in the autobody lightweight design were solved through divergence and convergence. The workflow of the solving process is shaped like a scalable diamond. Specifically, the knowledge of autobody structure was described accurately by extension modeling and extension divergence reasoning. Then, the lightweight design of autobody structure and material was achieved through extension transforms. Next, the EDT algorithm was constructed based on extension theory and the DT algorithm, and used to evaluate the lightweight effect of autobody. Finally, the effectiveness of the proposed algorithm as verified through a case study and a computer-aided engineering (CAE) simulation. The results show that our algorithm can accurately predict the weight reduction effect of autobody based on the case data, and generate a set of intelligent strategies to optimize the current design. The research results shed new light on intelligent evaluation of autobody lightweight design with multiple objectives and constraints.

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“…Step 2. Construct the information gain calculation model based on formulas (6)- (8). Then, set up the ID3 model with features (e.g.…”

Section: Figure 2 the Edt Model For Autobody Lightweight Designmentioning

confidence: 99%

“…In addition to reducing the autobody weight, the designer must consider an array of vehicle features, including mechanical properties, process difficulty, and production cost. This calls for a complete and objective method to evaluate the lightweight effect of autobody design [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

An ExtensionDecision Tree Algorithm for Lightweight Design of Autobody Structure

Lü¹,

Wang²

2019

JESA

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“…However, it is important to assess environmental impacts across the whole product lifecycle. Delogu et al [106] suggest that while mass reduction of steel (e.g., through substitution with advanced high-strength steels) can deliver emission reductions, substitution with wrought aluminium, magnesium, or carbon-fibre reinforced plastic results in greater emissions during material processing [106]. Such differences in the greenhouse gas emissions during production have important implications for electric vehicles, where the emission rate in the use phase is lower compared to internal combustion engine vehicles, potentially limiting the use of innovative materials in this important growth market.…”

Section: Lightweightingmentioning

confidence: 99%

“…Such differences in the greenhouse gas emissions during production have important implications for electric vehicles, where the emission rate in the use phase is lower compared to internal combustion engine vehicles, potentially limiting the use of innovative materials in this important growth market. Furthermore, material substitutions from metals to hybrid composites are likely problematic for end-of-life processing, requiring advanced recycling technologies to separate fibres from the resin matrix [106]. Any mass reduction strategy achieved by material substitution must consider potentially adverse environmental impacts in the production phase and the implications for material recovery at end-of-life.…”

Section: Lightweightingmentioning

confidence: 99%

“Slowing” and “Narrowing” the Flow of Metals for Consumer Goods: Evaluating Opportunities and Barriers

et al. 2018

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Metal resources are essential materials for many consumer products, including vehicles and a wide array of electrical and electronic goods. These metal resources often cause adverse social and environmental impacts from their extraction, supply and disposal, and it is therefore important to increase the sustainability of their production and use. A broad range of strategies and actions to improve the sustainability of resources are increasingly being discussed within the evolving concept of the circular economy. This paper uses this lens to evaluate the opportunities and barriers to improve the sustainability of metals in consumer products in Australia, with a focus on strategies that "slow" and "narrow" material flow loops. We have drawn on Allwood's characterisation of material efficiency strategies, as they have the potential to reduce the total demand for metals. These strategies target the distribution, sale, and use of products, which have received less research attention compared to the sustainability of mining, production, and recycling, yet it is vitally important for changing patterns of consumption in a circular economy. Specifically, we have considered the strategies of product longevity (life extension, intensity of use, repair, and resale), remanufacturing, component reuse, and using less material for the same product or service (digitisation, servicisation, and light-weighting). Within the Australian context, this paper identifies the strategies that have the greatest opportunity to increase material efficiency for metal-containing products (such as mobility, household appliances, and personal electronics), by evaluating current implementation of these strategies and identifying the material, economic, and social barriers to and opportunities for expanding these strategies. We find that many of these strategies have been successfully implemented for mobility, while applying these strategies to personal electronics remains the biggest challenge. Product longevity emerged as the strategy with the most significant opportunity for further implementation in Australia, as it is the most broadly applicable across product types and has significant potential for material efficiency benefits. The barriers to material efficiency strategies highlight the need for policies that broaden the focus beyond closing the loop to "slowing" and "narrowing" material loops.

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“…The reduction in fuel consumption in modern vehicles is the main driving force for new innovations in technologies [1,2]. One main strategy is to develop the lightweight materials to achieve better fuel efficiency [3][4][5][6][7]. Decreasing the friction losses of the friction pairs in engines is considered as a promising direction as well [8,9].…”

Section: Introductionmentioning

confidence: 99%

Tribological performance of nano-diamond composites-dispersed lubricants on commercial cylinder liner mating with CrN piston ring

Huang

Wang

Yuan

et al. 2020

Nanotechnology Reviews

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AbstractThis work investigated the effect of nanodiamond (ND) additives on the tribological properties of CrN-coated piston ring mating with the chromium-plated and BP alloy iron cylinder liners, which is one of the key friction pairs in the internal combustion engines. To enhance the dispersion of the NDs in the base oil, the surface of ND particles was modified with polyaniline via in situ polymerization. The friction and wear as well as the scuffing characteristics of the friction pair lubricated with different contents of ND composite-added base oil were evaluated by using the reciprocating tribotests, which are close to the actual conditions. The wear surface morphologies and elements distribution were analyzed to explore the wear behaviors and the associated mechanisms of friction pairs under the lubrication incorporated with the ND composites. The results show that the ND additive is beneficial for the pair of Cr liner and CrN-coated piston ring in the friction and wear as well as scuffing properties, and the best concentration of ND additive is expected to be around 1 wt%. But for the BP liner, the developed nanocomposite has a negative impact. The friction force and the wear loss of the pair lubricated by the ND composite-added oil are even worse than that tested with the base lubricating oil.

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Innovative composites and hybrid materials for electric vehicles lightweight design in a sustainability perspective

Cited by 96 publications

References 25 publications

An ExtensionDecision Tree Algorithm for Lightweight Design of Autobody Structure

An ExtensionDecision Tree Algorithm for Lightweight Design of Autobody Structure

“Slowing” and “Narrowing” the Flow of Metals for Consumer Goods: Evaluating Opportunities and Barriers

Tribological performance of nano-diamond composites-dispersed lubricants on commercial cylinder liner mating with CrN piston ring

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