TIRZ chapter 5 Flashcards
(27 cards)
What is a contradiction in TRIZ?
A contradiction is a clash of solutions or opposite benefits that seem impossible to achieve together.
What is a technical contradiction?
It occurs when improving one feature makes another worse; TRIZ helps avoid compromise and achieve both.
What is a physical contradiction?
A need for two opposite benefits at the same time; solved by separating in time, space, or system.
What are the three fundamental TRIZ solution lists?
- 40 Inventive Principles, 2. 8 Trends of Technical Evolution, 3. 76 Standard Solutions.
How are technical contradictions solved using TRIZ?
By using the Contradiction Matrix to identify relevant Inventive Principles.
A contradiction matrix is a TRIZ tool that helps solve technical contradictions by identifying which of the 40 Inventive Principles are most useful for improving one parameter without making another worse.
It’s a table where you choose what you want to improve (e.g. speed) and what might worsen as a result (e.g. energy use), and it suggests principles that have worked in similar past cases.
How are physical contradictions solved in TRIZ?
Using Separation Principles to allow opposite benefits in time, space, or conditions.
They help by showing how to achieve both opposites, depending on how we separate them:
Separate in Time – Use each solution at a different time (e.g. glasses that darken in sunlight).
Separate in Space – Use each solution in a different place (e.g. a mug that’s hot inside, cool to touch outside).
What is the Contradiction Matrix?
A matrix using 39 technical parameters to show which of the 40 Principles resolve specific contradictions.
What question does the Contradiction Matrix help answer?
How to improve X without making Y worse?
What are the steps to use the Contradiction Matrix?
- Analyze bad solution, 2. Identify pros/cons, 3. Define parameters, 4. Lookup in matrix, 5. Conceptualize solutions.
What are the Separation Principles in TRIZ?
- Separate in Time, 2. Separate in Space, 3. Separate on Condition, 4. Separate by System.
What is ‘Separate by System’ in TRIZ?
Using scale or system transitions like super-system, sub-system, or switching to inverse/other systems.
What does ‘Separate on Condition’ mean?
Apply opposite solutions simultaneously at the same place under different conditions or components.
Q: What is a contradiction in engineering problems?
A contradiction is when improving one aspect of a problem causes another aspect to worsen or when two opposing benefits are desired simultaneously.
Q: What are the two types of contradictions in TRIZ?
Technical contradiction and physical contradiction.
Q: What is a technical contradiction?
It occurs when improving one feature leads to the degradation of another feature.
Q: What is a physical contradiction?
It happens when we want two opposite states or features at the same time.
Q: How can physical contradictions be solved according to TRIZ?
By using separation principles such as separation in time, space, condition, or system.
Q: What is the contradiction matrix used for?
To identify which of the 40 inventive principles can solve a specific technical contradiction.
Q: What are the 39 technical parameters in TRIZ?
They are standard attributes used to define and analyze contradictions in the contradiction matrix.
Q: What are the 4 main separation principles in TRIZ?
Separation in time, space, on condition, and by system.
Q: What does separation in time mean?
It involves applying one solution at one time and the opposite at another.
Q: What does separation in space mean?
It involves applying one solution in one place and the opposite in another.
Q: What does separation on condition mean?
It involves applying different solutions in the same place and time based on conditions.
Q: What are the three fundamental TRIZ solution lists?
- 40 Inventive Principles, 2. 8 TRIZ Trends of Technical Evolution, 3. 76 TRIZ Standard Solutions.
