Concept Generation Theory of Inventive Problem Solving TRIZ in Russian Developed by Genrich Altshuller et. al. (1946) Dieter, Chapter 5.5 TRIZ Journal.

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Concept Generation Theory of Inventive Problem Solving TRIZ in Russian Developed by Genrich Altshuller et. al. (1946) Dieter, Chapter 5.5 TRIZ Journal

TRIZ A creative problem-solving methodology tailored for scientific and engineering problems It is more structured and based on logic and data, not intuition or brainstorming Hypothesis: There are universal principles of creativity that are the basis for creative innovations that advance technology – Somebody someplace has already solved this problem (or one very similar to it.) Creativity is now finding that solution and adapting it to this particular problem –Engineering ingenuity based on an inventory of ideas or a checklist

TRIZ Problem Solution Process General Problem Specific Problem General Solution Specific Solution Search for previously solved problems - 40 inventive principles Identify analogies Apply analogous solution to my specific problem Identify my problem Formulate the problem through the prism of TRIZ An example

Five Levels of Problem Solution -based on patent literature 1.Routine design solutions using well known methods (30%) 2.Minor corrections to an existing system by known methods (45%) 3.Fundamental improvements to an existing system which resolve contradictions within the industry (20%) 4.Solutions based on application of new scientific principle to perform the primary functions of the design (4%) 5.Pioneering inventions based on rare scientific discovery (1%) TRIZ deals mostly with design concepts at levels 3 & 4

Primary Understanding 1.Problems and solutions are repeated across industries and sciences. The classification of the contradictions (technical or physical) in each problem predicts the creative solutions to that problem. 2.Patterns of technical evolution are repeated across industries and sciences. 3.Creative innovations use scientific effects outside the field where they were developed

Problem-Solving Methodology TRIZ uses a creative solution to overcome a system conflict or contradiction (improve some attribute of the system lead to deterioration in other system attributes) examples: reliability vs. complexity, strength vs. flexibility, etc.. Resolve contradictions due to “technical tradeoffs” (QFD can help) Tabulation of the commonly used 39 engineering parameters in TRIZ39 engineering parameters Application of 40 inventive principles40 inventive principles

Interactive TRIZ Matrix Example: lengthen a static object without increasing weight. This is a contradiction. The improving feature is #4, “length of stationary object” and the worsening factor is #2, “weight of stationary object”. Use the matrix to discover possible ways of solutions, using the following inventive principles: inventive principles 35. Parameter changes 28. Mechanics substitution 40. Composite materials 29. Pneumatics and hydraulics

An example ( Invention 3. Gripping workpieces of complex shape To grip workpieces of complex shape, vice jaws must have a corresponding shape. It is expensive to produce a unique tool for every workpiece, however. Specific Problems to be resolved? Shape, adaptability, stability

Parameter to be improved/worsened: –Stability of an object (with a better grip)  13 Worsening/improving parameter: –Shape (cannot accommodate different or complex shapes)  12 –Adaptability  35 From TRIZ tableTRIZ table –(13, 12)  1 (segmentation), 4 (asymmetry), 18, 22 –(13, 35)  2, 30, 34, 35 –(35, 13)  1,8, 15, 37 –(12,13)  1,4,18,33 Solution: Placing multiple hard bushings around the workpiece. The bushings can move horizontally to conform to the necessary shape.

Physical Contradictions Definition: a conflict between two mutually exclusive physical requirements to the same parameter of an element of the system. Separation Principles –Separation between time –Separation between space –Separation between the parts and the whole –Separation upon condition (phase-transformation, physical- chemical-transformation) Example: Liquid crystal film for privacy window. With current transparent, w/o current opaque Other examples

39 Engineering Parameters 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 21.Power 22.Waste of energy 23.Waste of substance 24.Loss of information 25.Waste of time 26.Amount of substance 27.Reliability 28.Accuracy of measurement 29.Accuracy of manufacturing 30.Harmful factors acting on object 31.Harmful side effects 32.Manufacturability 33.Convenience of use 34.Repairability 35.Adaptability 36.Complexity of device 37.Complexity of control 38.Level of automation 39.Productivity

40 Inventive Principles 1. Segmentation 2. Extraction, Separation, Removal, Segregation 3. Local Quality 4. Asymmetry 5. Combining, Integration, Merging 6. Universality, Multi-functionality 7. Nesting 8. Counterweight, Levitation 9. Preliminary anti-action, Prior counteraction 10. Prior action 11. Cushion in advance, compensate before 12. Equipotentiality, remove stress 13. Inversion, The other way around 14. Spheroidality, Curvilinearity 15. Dynamicity, Optimization 16. Partial or excessive action 17. Moving to a new dimension 18. Mechanical vibration/oscillation 19. Periodic action 20. Continuity of a useful action

40 Inventive Principles 21. Rushing through 22. Convert harm into benefit, "Blessing in disguise" 23. Feedback 24. Mediator, intermediary 25. Self-service, self-organization 26. Copying 27. Cheap, disposable objects 28. Replacement of a mechanical system with 'fields' 29. Pneumatics or hydraulics: 30. Flexible membranes or thin film 31. Use of porous materials 32. Changing color or optical properties 33. Homogeneity 34. Rejection and regeneration, Discarding and recovering 35. Transformation of the physical and chemical states of an object, parameter change, changing properties 36. Phase transformation 37. Thermal expansion 38. Use strong oxidizers, enriched atmospheres, accelerated oxidation 39. Inert environment or atmosphere 40. Composite materials