Inventive Principles are a key concept within TRIZ (Theory of Inventive Problem Solving), a systematic problem-solving methodology developed by Russian...

40: COMPOSITE MATERIAL: (A) Replace homogeneous or uniform materials (or objects or systems) with composite (multiple) materials. EXAMPLE: Aircraft Structures like...

39: INERT ENVIRONMENT (A) Replace a normal environment with an inert one (B) Introduce a neutral substance or inert additives...

37: THERMAL EXPANSION  (A) Use expansion or contraction of material by changing its temperature (as in transformation of properties) (B)...

36: PHASE TRANSITION: (A) Make use of the phenomena of phase change (of an object or system e.g., solid to liquid or...

35: TRANSFORMATION OF PROPERTIES The Parameter Change principle refers to a concept where the value of a certain parameter or...

34: REJECTING AND REGENERATING : (A) Reject (or discard, dissolve, evaporate, melt, disappear, appear to disappear etc) an element of...

33: HOMOGENEITY The principle of homogeneity in interaction emphasizes using the same material or materials with identical properties in interacting...

32. CHANGING COLOR (USE OF COLORS, COLOR CHANGES, Change Optical or Visual Properties or Appearance): (A) Change the color of an object (or...