Design and fabrication of a lightweight high-strength aluminum alloy composite for automotive structural applications using recycled ceramic and polymer fillers Note: If you want multiple topic options, I can provide a list.

Project Abstract

The study reports the design, fabrication, and comprehensive characterization of a novel lightweight aluminum alloy composite reinforced with recycled ceramic and polymer fillers aimed at automotive structural applications. The material design leverages a hybrid reinforcement strategy combining alumina (Al2O3) or silicon carbide (SiC) ceramic particulates with vatanda? polymeric inclusions derived from recycled plastics, integrated within a corrosion-resistant aluminum matrix through a semi-solid casting and stir-casting approach followed by hot-rolling and heat treatment to optimize interfacial bonding and phase distribution. Systematic parametric optimization explores filler loadings ranging from 5 to 25 vol% with ceramic-to-polymer ratios of 7030, 5050, and 3070 to elucidate the trade-offs between stiffness, strength, ductility, and energy absorption. Morphological analyses via scanning electron microscopy, energy-dispersive spectroscopy, and X-ray diffraction reveal refined grain structures, improved load transfer at the matrix–reinforcement interface, and the presence of reaction-formed interphases that enhance bonding without compromising toughness. Mechanical testing encompasses tensile, compression, flexural, impact (Charpy and drop-weight), and hardness measurements under elevated temperatures to simulate service conditions. A comprehensive 3D finite element model is developed to predict weight-specific mechanical performance and crashworthiness, validated against experimental results. Thermomechanical aging and environmental conditioning assess durability under humidity, salt spray, and cyclic thermal loading to evaluate long-term reliability. Tribological assessments elucidate wear resistance and lubrication behavior, highlighting reductions in friction coefficients due to the synergistic effect of ceramic hardening and polymeric energy-dissipating phases. The results demonstrate a significant reduction in density by up to 15–25% relative to monolithic aluminum alloys, with strength increases of 10–25% and notable improvements in impact resistance and energy absorption, while maintaining acceptable ductility for automotive crash scenarios. The study identifies optimal filler compositions and processing conditions that achieve a balanced performance envelope suitable for lightweight stress-critical components such as bumper beams, door rails, and subframe elements, including a detailed assessment of cost implications and recyclability. A life cycle assessment indicates reduced embodied energy and comparable or lower global warming potential when using recycled fillers, aligning with circular economy objectives. The research contributes to the development of next-generation automotive alloys that combine weight reduction, enhanced safety performance, and sustainable materials management, providing a practical framework for industrial-scale fabrication, quality control, and certification procedures for structural composite components.

Project Overview

What This Project Is About

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The project explores making a lightweight, strong composite material by combining a common aluminum alloy with recycled ceramic and polymer fillers. It aims to improve automotive structural components by reducing weight without sacrificing safety or performance. Students will learn how to mix materials, process them into usable forms, and test their properties to see if the goals are met.

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The Problem It Addresses

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Cars demand lighter parts for better fuel efficiency, but aluminum alone can be costly and may not meet all strength and impact requirements. Using recycled ceramic and polymer fillers could lower material costs and environmental impact while enhancing strength and stiffness. This project investigates whether such a combination can yield a practical, sustainable automotive material.

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Objectives of the Project

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1. Identify suitable recycled ceramic and polymer fillers that work well with a chosen aluminum alloy.
2. Develop a simple processing method to make the composite, such as casting or short-process composite fabrication.
3. Characterize mechanical properties (strength, stiffness, toughness) and compare with baseline aluminum.
4. Assess lightweighting potential and basic cost implications.
5. Evaluate environmental impact and recyclability of the final material.

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What You Will Do Step by Step

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1) Literature scan to select materials and methods. 2) Source recycled fillers and prep them. 3) Fabricate test samples with varying filler content. 4) Perform mechanical tests (tension, compression, impact). 5) Analyze results to find optimal filler level. 6) Compare to pure aluminum baseline. 7) Discuss scalability and environmental aspects. 8) Document findings and propose next steps.

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Expected Outcome

Anticipated composite that is lighter and as strong as or stronger than the baseline aluminum in key tests, with a clear range of effective filler contents and preliminary cost and sustainability notes. The project should provide a practical pathway for further development toward real automotive parts.