List of TRIZ Inventive Principles
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Divide your object into independent parts.
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Divide your object into parts so that some its part
can be easily taken away.
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Increase the degree of the object’s fragmentation.
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Take away an interfering part of your object.
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If some project of the object is undesired, find out
what part of the object is a carrier of the undesired property and separate it
from the object.
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Instead of uniform structure of your object, use
non-uniform structure of your object.
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Instead of uniform structure of environment, use
non-uniform structure of the environment.
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If two functions are to be performed by the same
object but this caused problem, divide the object into two parts.
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Redesign your object and environment so that each
part of the object must be in proper conditions for operation.
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If your object has symmetrical shape, make its asymmetrical.
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If your object is asymmetrical, increase the degree
of asymmetry.
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Merge identical parts or components of your object in
space.
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Merge identical parts or components of your object in
time.
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If you have two objects that deliver different
functions, design a new single object that would be capable of delivering both
functions.
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Place one object inside another.
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Increase a number of nested objects.
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Make one object dynamically pass through a cavity of
another object when necessary.
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Compensate for the weight of your object with merging
it with another object that providing lifting force.
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Place your object into environment that provides
aerodynamic, hydrodynamic or other lifting force.
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If your object is subjected to harmful factors of
environments, subject it to antipodal action beforehand. This will compensate
with the harmful factor.
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If your object is subjected to harmful factors of
environments, create conditions that will prevent the object from harmful
factors beforehand.
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If your object has to be changed and this is hard to
achieve, perform the required change of the object fully or partially
beforehand.
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If your object is unreliable, create conditions in
advance that will prevent the object.
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If your object has to be lowered or raised, redesign
the object’s environment so that the necessity to raise or lower the object
ceases.
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Instead of actions defined, perform opposite action.
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Make the movable part of your object fixed or the
fixed part movable.
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Instead of linear parts of objects, use curve parts.
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Use rollers, balls, and spirals.
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Use rotary motion.
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Use centrifugal forces.
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If your object is immobile, make it movable.
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Divide your objects into parts capable of moving
relatively each other.
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Increase the degree of free motions.
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Make your object or environments dynamically change
to be in accord with the required conditions at each stage of operations.
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If it is not possible to precisely achieve the
required change, or to perform some action, reformulate problem: how to make
slightly less or slightly more and then achieve the required result.
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If your object moves along a line, consider movement
within two-dimensional space.
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If your object moves in plane, consider movement
within three-dimensional space.
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Rearrange objects so that instead of one-storied
arrangement a multi-storied arrangement can be achieved.
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Tilt the object.
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Use other side of the given area.
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Make your object or parts vibrate.
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If the object is in oscillatory motions, increase the
frequency of oscillations.
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Use resonance frequencies.
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Use ultrasonic frequencies.
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Use piezoelectric vibrators instead of mechanical
ones.
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Use ultrasonic oscillations in combinations with
electromagnetic fields.
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Instead of continuous action, use pulse actions.
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Vary Periodicity according the conditions.
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Use pauses between impulses to perform some other
action.
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All parts of the object must work continuously.
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Eliminate all idle running.
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If your object is subjected to harmful or hazardous
within some process, conduct the process at a very high speed.
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Use harmful factors to achieve positive effects.
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Eliminate a harmful factor by adding it with another
harmful factor.
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Amplify the harmful factor to such degree so that it
would stop to bring harm to your object or environment.
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Introduce feedback.
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If the feedback is available, vary it in accord with
operating conditions.
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Use an intermediate carrier to provide necessary
actions, if it is not possible to use existing objects or parts.
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The object must serve itself by performing tuning,
adjusting and repair operations itself.
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Use available resources or waste resources.
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If you need to undertake some actions with respect to
unavailable, fragile, complicated, dangerous object, use its simpler and
cheaper copy.
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Instead of real objects, use their optical images
(pictures, holograms)
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Use infrared or ultraviolet copies.
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Replace an expensive object with many cheap objects
that deliver same functios.
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Replace mechanical principle behind your system or
object with another physical principle: optical, acoustic, magnetic, electromagnetic,
thermal, etc.
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Instead of solid object or its part, use gases or
liquids: inflatable and filled with liquids, air cushion, hydrostatic and
hydro-reactive.
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Instead of heavy three-dimensional structures, use
flexible shells and thin films.
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Use flexible shells and thin films to isolate the
object or its part from environment.
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Make your object porous.
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Use porous coatings.
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Use porous inserts.
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If the object is porous, fill the pores with other
substance, liquid or gas to achieve positive effect.
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Change the color of the object, its part or
environment.
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Change the transparency of the object, its part or
environment.
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Make interacting objects of the same material or the
material with identical properties.
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If a part of an object that has delivered its
function had become unnecessary or undesired, eliminate it by dissolving,
evaporating, etc. or modify so that the interfering property will cease to
exist.
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Restore consumable parts of the object during
operations.
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Change the object’s aggregate state.
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Change concentration or consistency of the object.
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Change the degree of flexibility of the object.
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Change the temperature of the object or environment.
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Use physical phenomena accompanying phase
transitions: change of volume, emission or absorption of heat, etc.
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Use thermal expansions or contraction of material.
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Merge two materials with different coefficients of
thermal expansion.
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Replace regular air with enriched air.
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Replace the enriched air with pure oxygen.
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Ionize air or oxygen.
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Use ionized oxygen.
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Use ozone.
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Use inert gases instead of usual ones.
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Add neutral parts or additives to the object.
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Use composite materials instead of uniform ones.