Abstract
The environmental impact of automotive bumper beams, typically crafted from high-strength steel, is being closely scrutinized. This research explores the advantages of using polymers and composite materials as alternatives to traditional metals to enhance sustainability in vehicle design. The study employs Life Cycle Assessment (LCA) methods using SolidWorks for inspection of the ecological performance of different materials, covering the entire lifecycle from extraction to disposal. It compares standard steel, aluminum alloys, and polymers—specifically polypropylene (PP) and acrylonitrile butadiene styrene (ABS) for their environmental impacts. The findings indicate that polymers offer substantial benefits over conventional materials in terms of energy use, carbon emissions, and overall environmental impact. Materials like ABS and PP copolymer demonstrate significant potential for weight reduction, enhancing vehicle efficiency and recyclability. The analysis results highlight significant differences in energy consumption, carbon footprints, air acidification, and water eutrophication for automotive bumper materials. Steel's energy consumption is 404.57 MJ, PP copolymer is 125.79 MJ, ABS is 160.28 MJ, and aluminum is 667.65 MJ. Carbon footprints are 39.85 kg CO2 for steel, 5.73 kg CO2 for PP copolymer, 54.17 kg CO2 for aluminum, and 8.57 kg CO2 for ABS. Air acidification impacts are 6.81 mol H+ equivalent for steel, 16.80 mol H+ equivalent for aluminum, 1.75 mol H+ equivalent for ABS, and 1.19 mol H+ equivalent for PP copolymer. Water eutrophication impacts are 0.00480 kg N equivalent for steel, 0.0007 kg N equivalent for PP copolymer, 0.00047 kg N equivalent for aluminum, and 0.0024 kg N equivalent for ABS. The substantial design also showed significant changes for ABS and Polymer weight reduction is 75% to 88% less as compared to steel and these findings proves that selection of polymers minimizes environmental impacts while maintaining structural integrity and performance of the vehicle. These results support the adoption of polymer-based materials in designing car bumper beams, paving the way for more sustainable and eco-friendly automotive manufacturing practices.