Page 280 - Design for Six Sigma for Service (Six SIGMA Operational Methods)

Theory of Inventive Problem Solving (TRIZ) 249

12. Equipotentiality
• In a potential field, limit position changes (e.g., change operating con-
ditions to eliminate the need to raise or lower objects in a gravity field).
13. The other way around
• Invert the action(s) used to solve the problem (e.g., instead of
cooling an object, heat it).
• Make movable parts (or the external environment) fixed, and fixed
parts movable.
• Turn the object (or process) upside down.
14. Spheroidality
• Instead of using rectilinear parts, surfaces, or forms, use curvilinear
ones; move from flat surfaces to spherical ones, from parts shaped
as a cube (parallelepiped) to ball-shaped structures.
• Use rollers, balls, spirals, domes.
• Go from linear to rotary motion; use centrifugal forces.
15. Dynamics
• Allow (or design) the characteristics of an object, external envi-
ronment, or process to change to be optimal or to find an optimal
operating condition.
• Divide an object into parts capable of movement relative to each other.
• If an object (or process) is rigid or inflexible, make it movable or
adaptive.
16. Partial or excessive actions
• If 100 percent of an effect is hard to achieve using a given solution
method, then by using slightly less or slightly more of the same
method, the problem may be considerably easier to solve.
17. Another dimension
• Move an object in two- or three-dimensional space.
• Use a multistory arrangement of objects instead of a single-story
arrangement.
• Tilt or reorient the object; lay it on its side.
• Use another side of a given area.
18. Mechanical vibration
• Cause an object to oscillate or vibrate.
• Increase its frequency (even up to the ultrasonic).
• Use an object’s resonance frequency.
• Use piezoelectric vibrators instead of mechanical ones.
• Use combined ultrasonic and electromagnetic field oscillations.
19. Periodic action
• Instead of continuous action, use periodic or pulsating actions.
• If an action is already periodic, change the periodic magnitude or
frequency.
• Use pauses between impulses to perform a different action.