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Introduction to Biomedical Engineering Design. Chapter 1. What is Design?. Is NOT research or craftsmanship! Involves devices, processes, re-engineering, systems, optimization, regulations, finances, innovation, invention, entrepreneurship, etc. Design. Verb : invent, intend, devise.
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What is Design? • Is NOT research or craftsmanship! • Involves devices, processes, re-engineering, systems, optimization, regulations, finances, innovation, invention, entrepreneurship, etc.
Design • Verb: invent, intend, devise • Noun: drawing, arrangement, pattern, plan, art of making designs
Basic but Essential Questions • Who? • What? • Where? • When? • Why? • How? Their Job? Well, yes, but also…….. Your Job
Flow Diagram What, Who, Where, When, Why What, Who, Where, When, Why What, Who, Where, When, Why, How How No No Go/ no-go Yes How
Design: National Academy of Science • Product refers to hardware, service, or mission. • Process refers to the means by which a product is manufactured and supported • Development refers to the refinement of products and processes to correct problems. (Re-engineering, sometimes reverse engineering, …)
Design: NAS • Mission requirements analysis/Product system strategy - high level engineering analysis - requirements definition
Design: NAS • Product specification - product strategy - voice of the customer!!! (QFD, etc.) - environment (EPA) & regulatory (FDA!!!) - planned product specification
Design: NAS • Concept development - target setting (cost, schedule, performance, etc.) - brainstorming on product & process alternatives - development of product and process concepts.
Design: NAS • Preliminary Product and/or Process design - high level definition of product and process designs - evaluation of same v. targets - high level system trade-offs
Design: NAS • Refinement & verification of detail product and process designs - development of designs for components, subsystems & manufacturing - Geometry creation - prediction & evaluation of attributes - tracking & trade-offs
Design: NAS • System Prototype Development - experimental evaluation of attributes that do not meet target values • Preparation for production - refine process for manufacture • Production, Testing, Certification, Delivery • Operation, support, decommissioning, disposal
Other Design Concerns • Retracing if problem is ill defined • Excessive documentation • Human patients, animal studies, permissions • Design is often iterative • Delving into already patented info bases • Teamwork, finances, reality