Page 347 - Design for Six Sigma a Roadmap for Product Development

Theory of Inventive Problem Solving (TRIZ) 317

F
Subject Object

One of the common causes is that the object is not sensitive to the
action or field. We can increase the sensitivity of the object to the field
by altering the object by one of the following ways:

■ Replace the original object by a new substance
■ Modify the substance of object
■ Apply additive to outside object
■ Apply additive to inside object
■ Change the material structure or properties of object
That is, we change the original system to:

F Altered
Subject
Object

Example 9.15 Check for refrigerator leaks:

Leakage
Leakage (1)

1

Refrigerating unit
Refrigerating unit

Initial situation. There is a need to check a refrigeration system for leaks.
Current problem. Normal techniques do not provide accurate detection
and location of refrigerant leaks.
Analysis. The human eye cannot see leakage (liquid flowing out), that is,

Optical
Eye Leakage