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TRIZ theory of inventive problem solving
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TRIZ theory of inventive problem solving

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TRIZ is an algorithmic approach to problem solving method that leads to innovation and creatively.

TRIZ is an algorithmic approach to problem solving method that leads to innovation and creatively.

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  • 1. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem SolvingImproving Innovation ThroughTRIZTo the Microgravity Project Managers Work Group10/4/04ByKelly McEntire/DDR
  • 2. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem SolvingWhy Innovation???Who remembers what our Quality Policy is and what is says?Our commitment to continuousimprovement and innovation ensuresquality products, excellent services,and satisfied customers.
  • 3. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem SolvingWhy Innovation???This is an easy answer today with current programs getting cut and OExSlooking to be the mega program of the future.In our full cost environment and the strong emphasisto contract out, we must be innovative if we want tostay relevant and keep funding coming in.
  • 4. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem SolvingWhat is TRIZ (pronounced trees)?TRIZ stands for:“Teorija Rezbenija Izobretatelskih Zadach”Translated means”“Theory of Inventive Problem Solving”So why are we talking about a problem solvingmethodology using a Russian name?
  • 5. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem Solving• TRIZ originated in former USSR where it was developed byGenrich Altshuller (1926-1998). He began developing this methodafter WWII and continued till he died.• At the close of WWII, the Soviet Government agreed to give theGerman Patent Library to the US in exchange for various pieces ofindustrial equipment. Altshuller claimed equipment will beworthless in 20 years, but the patents would remain valuable.• He was critical of this decision and sent a letter to Stalin stating so.He was arrested by the KGB and sentenced to 25 years for anti-soviet propaganda.• He was imprisoned in Siberia for 4 years in the early 50’s where hewould have died had Stalin not died first. Many including Atshullerwere released from prison. He continued the development for 40years. But not till the collapse of the iron curtain did the method seethe outside of the USSR when TRIZ experts immigrated or lectured.
  • 6. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem Solving• TRIZ is considered an Algorithm. It is considered a empiricalmethod of innovation, because it is a step by step process that canlead to innovation. It is based upon an exhaustive patent search thatwas conducted by Altshuller.• Its premise is that innovation can be taught.• This goes contrary to popular opinion, because most feelinnovation is emotionally based. It happens when we get a Eureka!moment. It cannot be structured. You must be gifted with a creativemind.• TRIZ is catching on in many companies and throughout the world.Most companies involved in development know that innovation iscritical to their bottom line.• TRIZ works to reduce the number of trial and error iterations bycircumventing much of the solution set thereby getting to thesolution quicker.
  • 7. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem SolvingWhy TRIZ?There are several methods for increasing innovation.• Brainstorming• Synectics• Lateral Thinking• Neurolinguistic Programming• Mind MappingThese are all emotionally based.TRIZ is empirically based!!It is designed to overcome Psychological Inertia. PsychologicalInertia is based upon habits, our education, paradigms, internalprocesses, past successes, past failures and “we have always doneit that way”.TRIZ directs the solution path based on an empirical approach to theproblem resolution.
  • 8. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem SolvingFrom this month’s CAD/CAM Monthly email newsletter.“It is astounding to think that the manufacturing industry averages only one productsuccess for every 3,000 ideas generated. Even more astounding is the fact that thisproportion has remained virtually unchanged over the past four decades. An upshot ofthis is that companies waste approximately half of their development budgets onproducts that never reach the consumer or that fail after commercialization.These are incredible odds for manufacturers! The issue is not a lack of ideas. Thedilemma is capitalizing on ideas.Studies indicate that innovation is the key to product development success. Itsinnovation that enables a company to bring products to market that meet customerrequirements.TRIZ attempts to circumvent the many mediocre solutions to problems and get directly tothe best solution faster.
  • 9. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem Solving
  • 10. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem SolvingBenefits of TRIZ?• Problem solving based on fixed algorithmEasy algorithm to follow, repeatable• Better and more innovative solutionsEnhances credibility, wins more proposals• Reduces the number of trail and error solutions.Saves time, money and reduces risk• Works on any type of problemNew products, failure prediction, analysis
  • 11. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem SolvingTRIZ’s Basic Premise• Problems may be coded, classified, and solved methodically• The evolution of technology is predictable using patterns andtrends repeated many times• TRIZ uses knowledge engineering based upon over 200,000patents searched in the former USSR
  • 12. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem SolvingDefinition 1IFR – Ideal Final ResultIt is the imagined ultimate solution• Eliminates the deficiencies of the original system• Preserves the advantages of the original system• Does not make the system more complicated• Does not introduce new disadvantagesCreate using imagination not knowledgeChange the problem to an assertion• Declare the future possibility without proof
  • 13. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem SolvingDefinition 2IdealityA metric to measure progress towards the IFR∑∑∑+=HarmCostBenefitsIdealityImprovement is to increase Ideality• increasing benefits• decreasing costs• decreasing harm
  • 14. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem SolvingFundamentals of TRIZGeneral ProblemSpecific ProblemSolution to SpecificProblemGeneral SolutionsAbstraction Analogy12 34
  • 15. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem SolvingAlgorithm for Problem Solving2) Create Ideal Final Result (IFR)Eliminate the deficienciesPreserve the advantagesNot more complicatedNo new disadvantages1) Define the problemList all requirements and constraintsWe want this but we can’t because ofthis. We get this because of this.3) Determine the differencesCompare original system with IFR4) Create Ideality EquationList differences as Benefit, Cost,Harmful5) Determine ContradictionsTechnical or Physical contradictions6) Determine Input ParametersUse 2 of 39 or other parameters7) Physical or Technical ContradictionConvert between the two contradictionsIf Technical then use Contradiction Matrix9) Examime SolutionsConvert generic solutions to specificDoes solution increase Ideality?No – go to step 5Does solution solve the problem?Yes – IMPLEMENT8) Determine General SolutionUse 40 Inventive Principles
  • 16. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem SolvingSolving a Problem with TRIZDefine Technical System(Function Model)Identify IdealFinal Result (IFR)Compare/ContrastExisting system with IFREstablishIdeality Equation(Σuseful/Σharmful)Identify systemlevel contradictionsUse 39 ParametersPhysical ContradictionWant A andTechnical ContradictionB : CSeparation Principles Contradiction MatrixSolutionsIdentify contradictions at sub-or super-system levelCreate System ModelCompare solution Idealitywith Existing systemCompare with IFRImplementProblemSolved?ConvertYesNoSubstance-Field(Su-Field) Algorithm
  • 17. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem Solving39 Parameters1. Weight of moving object2. Weight of stationary object3. Length of moving object4. Length of stationary object5. Area of moving object6. Area of stationary object7. Volume of moving object8. Volume of stationary object9. Speed10. Force11. Stress, pressure, or tension12. Shape13. Stability of the objects composition14. Strength15. Duration of action by a moving object16. Duration of action by a stationary object17. Temperature18. Illumination intensity, brightness, light quality, etc.19. Energy used by moving object20. Energy used by stationary object21. Power22. Loss or waste of Energy23. Loss of substance24. Loss of Information25. Loss of Time26. Amount of substance/matter27. Reliability28. Measurement accuracy29. Manufacturing precision30. External harm affects the object31. Object-generated harmful factors32. Ease of manufacture33. Ease of operation Simplicity34. Ease of repair35. Adaptability or versatility36. Device complexity37. Complexity of control38. Extent of automation39. Productivity
  • 18. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem Solving40 Inventive Principles1. Segmentation2. Taking out (Extraction)3. Local quality or conditions4. Asymmetry5. Combining or merging6. Universality7. Nesting8. Counterweight9. Preliminary counter-action10. Preliminary action11. Cushion in advance12. Equipotentiality13. Inversion or ‘the other way round14. Spheroidality - Curvature15. Dynamics16. Partial or excessive actions17. Moving to another dimension18. Mechanical vibration19. Periodic action20. Continuity of useful action21. Rushing through or skipping22. "Blessing in disguise" or "Turn Lemons intoLemonade"23. Feedback24. Mediator or intermediary25. Self-service26. Copying27. Cheap short-lived object instead of expensivedurable one28. Replace mechanical system29. Pneumatics or hydraulics30. Flexible shells or thin films31. Porous materials32. Change the color33. Homogeneity34. Rejecting and regenerating parts35. Transformation of physical or chemical states of anobject36. Phase transitions37. Thermal expansion38. Strong oxidants39. Inert atmosphere40. Composite materials
  • 19. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem SolvingContradiction MatrixWorseningFeatureImprovingFeature
  • 20. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem SolvingKathy Schubert’s Example Problem – How do you create a partial gravityfield, i.e. lunar or Martian within the zero-g drop tower?Phrase the problem as follows:“I want to create a partial gravity field in the zero-g drop tower, but I can’t because itrelies on the earth gravity field which is constant”General Problem: Develop technical contradictions. Find pairs of the 39Parameters. One must increase while the other decreases.Contradiction MatrixImproving Worsening General Solutions10: Force 1: Weight of Moving Object 8,1, 37, 1835: Adaptability 36: Device Complexity 15, 29,37,283: Length Moving Object: 24: Loss of Information 1,24Contradiction Matrix Yields:8: Counterweight37: Thermal ExpansionDevelop the Specific Solution
  • 21. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem SolvingKen Gregg’s Example Problem – Gas A & B are constantly flowing creating asteady flame front established about 10mm past the nozzle face. A puff of Gas C is sentinto flame to visualize possible flame extinction.Phrase the problem as follows:“I want to create a uniform flow with Gas A & B, but I can’t because GAS C willcontaminate it when it is blown in to visualize flame extinction.This uses Physical Contradiction rather than the Technical Contradiction justdescribed.1. Use of a barrier •Check valve•One-way film/membrane•Dissolution of lid covering tube by application ofcurrent•Film of soapy water on tube2. Separation of space •Bring in tube with Gas C when needed.•Flow Gas B in tube followed by plug of Gas Cwhen required.3. Separation of time •Splitting flow4. Scale •Bleed Gas C from tube with high flow whenrequired5. Upon condition •No specific solution6. Prevent interaction •Ionize or polarize Gas C, but not B.
  • 22. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem SolvingKen Gregg’s Example Problem – ContinuedBEST SOLUTIONIntroduce tube just prior to puff. Have Gas C flowing at bleed rate out oftube until puff occurs.BENEFIT TO CUSTOMER• Well defined problem statement.• Defined generic solution sets focus effort to where solutions are likely tobe found and directs the group to explore options that may not have beenconsidered.• Large number of possible solutions generated• Ranking of solutions by experienced professionals increasesconfidence.• Group allowed me to leverage my time effectively
  • 23. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem SolvingFuture of TRIZ• Many companies are using TRIZ for innovative problem solving• About 20 people have been trained in the method at GRC.• GRC starting a users group to be TRIZ experts for anyone with aproblem that can not be solved.• They work with subject matter experts• Is there more interest in training??• Are there problems that anyone would like to bring to the TRIZusers group.Thank you
  • 24. Engineering Development Division at Lewis FieldGlenn Research CenterTRIZ - Theory of Inventive Problem SolvingTRIZ Timeline1956 First TRIZ paper published by Altshuller1980 First TRIZ Conference1993 TRIZ becomes known outside of USSR1996 TRIZ Journal foundedReference Books on TRIZThe Innovation Algorithm, Genrich AltshullerSimplified TRIZ, Kalevi RantanenSome TRIZ Websites of InterestTRIZ Journal: http://www.triz-journal.comEuropean TRIZ: http://www.etria.netAltshuller Institute for TRIZ Studies http://www.aitriz.orgTechnical Innovation Center: http://www.triz.orgInternational TRIZ Association http://matriz.karelia.ru