Balancing Customer Quality and Environmental Impact in Vehicle Design

Why It Matters

This approach allows designers and manufacturers to proactively integrate sustainability into the product development process. By considering both user satisfaction and ecological footprint early on, design teams can make informed decisions that lead to more desirable and responsible products.

Key Finding

The research demonstrates that by systematically evaluating and weighting customer quality perceptions against environmental impacts across a vehicle's entire life cycle, it's possible to identify optimal design choices that appeal to consumers while being ecologically responsible.

Key Findings

• Vehicle quality levels were estimated to range from 0.15 to 0.69 (weighted at 0.75).
• Life cycle assessment scores were estimated in the range of 0.25 to 0.57 (weighted at 0.25).
• The overall LCA scores for vehicles ranged from 0.18 to 0.62.
• It is possible to predict the most satisfactory and environmentally friendly vehicle variant by modifying quality levels and considering life cycle impacts.

Research Evidence

Aim: To develop a model that supports the prediction of vehicle variants that are satisfactory to the customer in terms of quality level and environmental impact throughout their life cycle.

Method: Multi-Criteria Decision Making (MCDM) incorporating Life Cycle Assessment (LCA), TOPSIS, SMARTER, Pareto-Lorenz, and the 7±2 rule.

Procedure: A model was developed and tested using production variants of battery electric vehicles (BEVs). Quality levels and life cycle assessment scores were estimated and weighted to determine overall vehicle satisfaction and environmental friendliness.

Context: Automotive design and manufacturing, specifically focusing on electric vehicles.

Design Principle

Sustainable design decisions should be informed by a balanced consideration of user needs and comprehensive environmental impact analysis.

How to Apply

When designing new products, especially in sectors with significant environmental impact like transportation, use a multi-criteria decision framework that includes both user-perceived quality and life cycle environmental performance.

Limitations

The model's effectiveness may depend on the accuracy of the input data for quality levels and LCA estimations, and the specific weighting assigned to each criterion.

Student Guide (IB Design Technology)

Simple Explanation: You can figure out the best car design by looking at how good it is for the user and how good it is for the planet over its whole life. This helps make cars people like and that are also eco-friendly.

Why This Matters: This research shows how to make design choices that are not only functional and appealing to users but also responsible towards the environment, a key consideration in modern design.

Critical Thinking: How might the weighting of 'quality level' versus 'environmental impact' change depending on the target market or regulatory environment?

IA-Ready Paragraph: This research highlights the critical need to integrate comprehensive Life Cycle Assessment (LCA) with user-centric quality metrics during the design phase. By employing multi-criteria decision-making models, as demonstrated in the study by Ulewicz et al. (2023), designers can systematically predict and develop product variants that optimally balance customer satisfaction with environmental responsibility throughout the entire product lifecycle, thereby informing more sustainable design strategies.

Project Tips

• When evaluating design options, consider using a scoring system that accounts for multiple factors.
• Research and incorporate Life Cycle Assessment (LCA) data to understand the environmental impact of materials and manufacturing processes.

How to Use in IA

• Reference this study when discussing the importance of balancing user needs with environmental considerations in your design project.
• Use the methodology as inspiration for developing your own evaluation criteria for design solutions.

Examiner Tips

• Demonstrate an understanding of how to quantitatively assess design choices against multiple criteria, including sustainability.
• Show how you have considered the full life cycle of your product, not just its immediate use.

Independent Variable: ["Quality level of vehicle variants","Life cycle environmental impact scores"]

Dependent Variable: ["Overall customer satisfaction score","Environmental friendliness score"]

Controlled Variables: ["Type of vehicle (e.g., BEV)","Methodology for LCA calculation","Methodology for quality assessment"]

Strengths

• Integrates multiple established decision-making and assessment methodologies.
• Provides a quantitative framework for evaluating complex design trade-offs.
• Focuses on a critical area of sustainable product development.

Critical Questions

• What are the potential biases in subjective 'quality level' assessments?
• How sensitive is the final decision to changes in the weighting of quality versus environmental impact?

Extended Essay Application

• Investigate the life cycle environmental impact of different materials for a chosen product.
• Develop a decision matrix to compare design prototypes based on user feedback and sustainability metrics.

Source

Sustainable Vehicle Design Considering Quality Level and Life Cycle Environmental Assessment (LCA) · Energies · 2023 · 10.3390/en16248122