concept_generation

concept_generation - resolution of conflicts in product or...

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Unformatted text preview: resolution of conflicts in product or process design resolution of conflicts in product or process design derived from psychological origins of decision making and problem solving • Preparation • Incubation • Inspiration • Verification • TRIZ developed by Genrich Altshuller, c. 1946 • Based on survey of patent content • Two types of problems encountered by design engineers: Problems with Standard Solutions Problems with Standard Solutions Inventive Problems have No Known Solution Inventive Problems have No Known Solution access to solution blocked by something called “psychological “psychological inertia” inertia” solutions requiring insight into specialties outside one’s own field of experience are often rendered invisible metals ceramics polymers biomaterials electronic materials • be a systematic, step-by-step procedure • be a guide through a broad solution space to direct to the ideal solution • be repeatable and reliable and not dependent on psychological tools • be able to access the body of inventive knowledge • be able to add to the body of inventive knowledge • be familiar enough to inventors by following the general approach to problem solving in figure 1. Conditions Satisfied during Course of Inventive Design Conditions Satisfied during Course of Inventive Design 1,000,000 All that is knowable 1% Discovery 5 100,000 Knowledge outside the industry 4% New concept 4 1000 Knowledge within the industry 18% Major improvement 3 100 Knowledge within company 45% Minor improvement 2 10 Personal knowledge 32% Apparent solution 1 Approximate # of solutions to consider Source of knowledge % of solutions Degree of inventiveness Level Levels of Inventiveness Observations Leading to Structure/Components of TRIZ Observations Leading to Structure/Components of TRIZ • Engineering system [product] evolution develops according to same patterns, independent of discipline or product domain • Patterns used to predict trends in evolution in product domain • Patterns used to direct search for new concepts • Conflicts [contradictions] are key drivers for product invention • Principles of conflict resolution universal across product domain • Application of principles implies that compromise is unacceptable • Systematic application of physical effects aids invention ∑ ∑ = j i H U Ideality Law of Increasing Law of Increasing Ideality Ideality • U i = useful attribute • H j = harmful attribute 1 Weight of moving object 2 Weight of nonmoving object 3 Length of moving object 4 Length of nonmoving object 5 Area of moving object 6 Area of nonmoving object 7 Volume of moving object 8 volume of nonmoving object 9 Speed 10 Force 11 Tension, pressure 12 Shape 13 Stability of Object 14 Strength 15 Durability of moving object 16 Durability of nonmoving object 17 Temperature 18 Brightness 19 Energy spent by moving object 20 Energy spent by nonmoving object Engineering Parameters Commonly Used 21 Power 22 Waste of energy...
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This note was uploaded on 02/02/2012 for the course EMA 4714 taught by Professor Staff during the Spring '08 term at University of Florida.

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concept_generation - resolution of conflicts in product or...

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