Design for sustainability: introductory guideRyan Mott2013-2014 Independent researchAdvisor: Dr. C. M. Archibald

Guide objectives Guide topics Guide Evaluation Conclusions

Goal: improve undergraduate mechanical engineers’ understanding of Design for Sustainability, particularly material and process selection.

Overview

Research Background Materials and the Environment

- Michael F. Ashby Life Cycle Analysis Life Cycle Engineering Decision Matrix Plastics recycling

Guide objectives

CES Guide from Granta Design

Procedures taught:• Material research• Materials selection• Eco Audit

Guide objectives

Define and defend sustainability

Review industry’s impacts Resource consumption

Energy Materials

Emissions Human health Pollution Waste management

Guide topics

Materials Selection Process Identifying dominant environmental impact

Identifying dominant life cycle phase: Material Process Transport Use Disposal End of life

Side note: optimal lifespan

Guide topics

Design constraints and objectives Research top candidates

Eco Audit Life Cycle Analysis (LCA) strategy Exercises in Granta Design guide.

Guide topics

Materials Selection:Multiobjective Optimization Decision Matrix

Description, example:

Many objectives, fewer choices

Recumbant vehicle fairing (shell) Weight (1 - 5): magnesium silica glass PMMA CompositeEmbodied energy 4 3 5 4 1Abrasion resistance 2 5 4 3 2Lightweight 3 3 1 5 4Yield strength 5 4 1 2 5

Net score: 51 36 47 45

Guide topics

Material Property Charts

Many choices, few objectives

Guide topics

Material Property Charts (continued)

Tradeoff surface

Exchange constant

Penalty function

Scaling laws

Guide topics

Material Family overviews

Guide to Sustainable Materials Selection, evaluation:The objective of this guide is to be used in conjunction with the Getting Started with CES EduPack guide from Granta Design to familiarize undergraduates in mechanical engineering with the principles of sustainable materials selection and with the use of CES Edu Eco Audit and materials selection tools. This guide should prepare students for exercises in materials selection and Eco Audits such as Selection Homework 2 in MECE 210.Please indicate strength/weakness of guide in each category with a score from 0-5 (0 for prohibitively poor to 5 for excellent)

Category ScoreGuide provides…  awareness of environmental impacts of material choices  awareness of impacts of entire life cycle of product  instruction in the materials selection process such as used with CES Edu  instruction in product sustainability analysis such as CES Edu Eco Audit  instruction in weighing multiple objectives using material property charts  Additional qualities…  Clarity of content  Relevance of content to materials selection and sustainability analysis with CES Edu  Organization of content (logical flow, easy to locate relevant information)  Completeness of content  Informative examples and illustrations  Specific procedure instructions  Integrates well with exercises and illustrations in the Getting Sarted with CES guide  

Guide evaluation

Category Mean Scoreawareness of environmental impacts of material choices

 

awareness of impacts of entire life cycle of product 

instruction in the materials selection process such as used with CES Edu 

instruction in product sustainability analysis such as CES Edu Eco Audit 

instruction in weighing multiple objectives using material property charts 

Clarity of content 

Relevance of content to materials selection and sustainability analysis with CES  

Organization of content (logical flow, easy to locate relevant information) 

Completeness of content 

Informative examples and illustrations 

Specific procedure instructions 

Integrates well with exercises and illustrations in Getting Started with CES guide  

Guide evaluation

Conclusions

Goal: improve undergraduate mechanical engineers’ understanding of Design for Sustainability, particularly material and process selection.

Life cycle energy of 2014 HPVC entry, compared to steel equivalent.

- No section on sustainable manufacturingin Design for Manufacturability

Guide objectives