Statement: Bullet proof vests should be strong, but not heavy.
Step 1 - Identify the contradiction(s)
Strength (improves) versus Weight (worsens)Step 2 - Look at the list of features and identify those important to your contradiction.
Strength - #14Step 3 - Identify which are improving features and which are worsening features
Weight - #2
Strength (#14) improves and Weight (#2) worsensStep 4 - Refer to the TRIZ Contradiction Matrix to learn which of Altshuller's Principles may be useful for this problem.
Row 14 (Strength) and Column 2 (Weight) of the Contradiction Matrix indicate the following Principles may be useful: 40, 26, 27, and 1. We now look at the Principles list to learn that these numbers correspond toNext we brainstorm how we could use these four Principles to solve our problem.40. Composite materials
27. Cheap short living
40. Composite materials
The explanation of this Principle from the TRIZ website is:26. Copying
For lighter-weight, stronger, vests, the use of composites is an active area of research. Polymers (Kevlar) reinforced with carbon nanofibers are currently being investigated as a strong lightweight alternative to steel for structural materials.
- Change from uniform to composite (multiple) materials such as reinforced polymers.
The explanation of this Principle from the TRIZ website is:27. Cheap short-living objects
We could copy the design of abbreviated scuba diving wet suits for use as a bullet proof garment.
- Instead of an unavailable, expensive, fragile object, use simpler and inexpensive copies.
- Replace an object, or process with optical copies.
- If visible optical copies are already used, move to infrared or ultraviolet copies.
The explanation of this Principle from the TRIZ website is:1. Segmentation
This Principle does not appear to be readily applicable to this problem. This is not necessarily unusual, because these Principles are only general suggestions to help focus our thinking in areas that have proven fruitful in previous problems.
- Replace an inexpensive object with a multiple of inexpensive objects, comprising certain qualities (such as service life, for instance).
The explanation of this Principle from the TRIZ website is:So, by identifying problem contradictions, the elements of TRIZ can be used to help reach a solution. Using the TRIZ method, we were able to generate two additional ideas.
Perhaps we could consider several different coverings for different parts of the body (pants, vest, etc.) rather than a one-piece suit. Maybe different materials to cover the critical areas such as chest and head, each taking advantage of specific properties that would be customized for their differing applications.
- Divide an object into independent parts.
- Make an object easy to disassemble (Replace worn or damaged parts).
- Increase the degree of fragmentation or segmentation.
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