Disproportional Wear and Tear

beginner2 min readsystems thinking · engineering · business · physics

A component exposed to disproportionate wear can require more frequent replacement than the rest of a system. Targeted changes to its material, load, or design can reduce recurring disruption.

THE IDEA

What works for one part of the system doesn’t necessarily work for all of it. In a mechanical system, when one part is subjected to significantly more wear and tear, it makes sense to coat it with a strong alloy that will minimize the damage in proportion to the wear and tear on the rest of the system. You don’t want to have to stop production for the frequent replacement of just one bit.

Leonardo also played a role in the development of an alloy in the original, chemical sense. He “was also the first person to record the best mix of metals to produce an alloy that reduces friction. It should be ‘three parts of copper and seven of tin, melted together,’ which was similar to the alloy he was using to make mirrors. ‘Leonardo’s formula gives a perfectly working anti-friction composition,’ wrote Ladislao Reti, the historian of technology who played a role in discovering and publishing the Madrid Codices of Leonardo’s work in 1965. Once again, Leonardo was about three centuries ahead of his time. The first antifriction alloy is usually credited to the American inventor Isaac Babbitt, who patented an alloy containing copper, tin, and antimony in 1839.”1

When to use it

Industrial equipment maintenance: identifying the most frequently failing part and upgrading its material or design.
IT infrastructure: upgrading a server that handles peak loads to prevent frequent crashes that affect the entire service.
Business operations: protecting a key supplier that is critical to your supply chain by diversifying sources or building a strategic stockpile.
Personal productivity: identifying your most used tool or resource (e.g., laptop, car) and ensuring it’s well-maintained to avoid disruptive breakdowns.

FROM THEORY TO EVERYDAY LIFE

In practice

Reinforcing a Bearing in a Conveyor System

A manufacturing plant has a conveyor belt where one roller bearing fails every month due to heavy load, while others last a year. The plant coats the vulnerable bearing with a hardened alloy, extending its life to match the rest, and avoiding monthly shutdowns.

Leonardo da Vinci's Anti-Friction Alloy

The source describes Leonardo’s copper-and-tin alloy for reducing friction and compares it with the alloy patented by Isaac Babbitt in 1839. The comparison does not establish that Babbitt directly commercialized Leonardo’s formula.

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A MOMENT TO REFLECT

Put it to work.

In a system you oversee, which component experiences the most strain? How can you disproportionately reinforce it to balance the overall system durability?
How does the concept of disproportionate wear and tear apply to human systems, like a team where one person takes on most of the workload?
What trade-offs must you consider when deciding to invest in reinforcing a weak point rather than allowing for regular maintenance or redundancy?