Chapter 3 Engineering Design Objectives Define engineering design
Chapter 3 Engineering Design
Objectives • Define engineering design. • Describe the steps of the engineering design process. • Explain how to define a problem and its constraints. • Identify various methods of ideation. • Summarize the processes of creating and testing design solutions. • Explain how to communicate the final design solution. • Describe the purpose of an engineering notebook. Copyright Goodheart-Willcox Co. , Inc. May not be posted to a publicly accessible website.
Engineering Design • Creative application of technology • Design systems, products, processes to solve problems or meet needs yuyangc/Shutterstock. com Copyright Goodheart-Willcox Co. , Inc. May not be posted to a publicly accessible website.
Teamwork • Effective teams have varying skills, diverse backgrounds • Work together to solve problems • Respect, communicate, recognize, commit • Teamwork skills important to employers Copyright Goodheart-Willcox Co. , Inc. May not be posted to a publicly accessible website.
Ethics • • • Engineers must conduct selves in ethical way Primary concerns are public safety, well-being Truthfulness Follow accepted standards Work only in area of expertise Copyright Goodheart-Willcox Co. , Inc. May not be posted to a publicly accessible website.
Engineering Design Process • Guides user from problem identification to design solution • Used by all engineers in some way • Reworking previous steps is common Copyright Goodheart-Willcox Co. , Inc. May not be posted to a publicly accessible website.
Engineering Design Process Goodheart-Willcox Publisher Copyright Goodheart-Willcox Co. , Inc. May not be posted to a publicly accessible website.
Problem Definition • Identify real problem – Research • Develop problem statement • Define constraints • Create design brief – Includes constraints Copyright Goodheart-Willcox Co. , Inc. May not be posted to a publicly accessible website.
Problem Definition Goodheart-Willcox Publisher Copyright Goodheart-Willcox Co. , Inc. May not be posted to a publicly accessible website.
Idea Generation • Ideation – No wrong answers – Generate as many ideas as possible – More ideas increase likelihood of good solution • Brainstorming • Keep records, using sketches, words • Research Copyright Goodheart-Willcox Co. , Inc. May not be posted to a publicly accessible website.
Solution Creation • Evaluate designs • Select, refine best solutions • Communicate solutions – Drawings – Computer-generated solutions Copyright Goodheart-Willcox Co. , Inc. May not be posted to a publicly accessible website.
Evaluate Designs • Rank criteria in order of importance • Give numeric value to criteria • Score designs based on meeting criteria Copyright Goodheart-Willcox Co. , Inc. May not be posted to a publicly accessible website.
Communicate Solution • Drawings – Renderings, detail drawings, threedimensional (3 -D) models • Computer-generated solutions – Computer-aided design (CAD) software, computer numerical control (CNC) equipment Goodheart-Willcox Publisher Copyright Goodheart-Willcox Co. , Inc. May not be posted to a publicly accessible website.
Test/Analysis • Engineers select best to evaluate solution – Computer simulations – Prototypes – Rapid prototyping • Solutions can fail testing – Return to appropriate design process step, work through Copyright Goodheart-Willcox Co. , Inc. May not be posted to a publicly accessible website.
Final Solution or Output • Mechanical drawings • Pictorial drawings • Orthographic drawings (multiview drawings) • Specifications sheets • On completion, sent to management, client for approval Goodheart-Willcox Publisher Copyright Goodheart-Willcox Co. , Inc. May not be posted to a publicly accessible website.
Design Improvement • No perfect design • Always room for improvement • Keep up with technology, marketplace demands • Use feedback to improve design Copyright Goodheart-Willcox Co. , Inc. May not be posted to a publicly accessible website.
Reverse Engineering • Examine existing products, processes • Disassemble for better understanding • Has ethical implications – Illegal to use patented ideas Roongzaa/Shutterstock. com Copyright Goodheart-Willcox Co. , Inc. May not be posted to a publicly accessible website.
Engineering Notebooks • Written record of all information from project • Legal document – Fixed binding – Do not remove or add pages – Cross out blank space Goodheart-Willcox Publisher Copyright Goodheart-Willcox Co. , Inc. May not be posted to a publicly accessible website.
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