One topic in the TRIZ advanced course (Level 2) is functional analysis for processes. The productive function is described as a function that irreversibly changes the parameters of a product in the desired direction.
In my thoughts on function analysis #3, I argued that we should not name parameters, but characteristics and properties that have a certain manifestation or value. In the case of function analysis for products, a function changes or maintains the value of a property. Properties are therefore the parameters in the function analysis for products that we can influence.
Characteristics as unchangeable parameters play a subordinate role in function analysis for products. For example, we do not consider the color of the car (characteristic: value – color: red) when we model it while driving.
If a parameter of a product is irreversibly changed by productive functions, then we turn a property into a characteristic.
– When a car is produced, it is painted. The color is changed to red and from this point on is a characteristic.
– The iron bar, which is bent, has a property shape, which is straight, for example. This shape is changed by a forming process to the shape that you want to use in a construction.
From then on, the shape is normally treated as a characteristic (exceptions prove the rule).
Can you understand this chain of thought? Does it make sense or are there any counter-arguments?
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