Travis Dodd

An attentive Engineer

[Travis Dodd @TravisDodd8]

🚀 Discovered a gem for uncertainty models!

There is a fantastic tool on the NIST site, for calculating measurement uncertainties.

🔗 https://t.co/9zYHsJy8Gl

I'm unsure who developed this tool, but if you read this, "thank you". Your creation has saved me significant time.

[Travis Dodd @TravisDodd8]

@JKludass Fracture toughness is the ability of a material to resist fracture in case of small defects or cracks in the surface. Materials such as natural rubber latex or polyisoprene, have a low fracture toughness, which means that whilst they are strong, they break suddenly when cracked.

[Travis Dodd @TravisDodd8]

Ever had medical gloves tear while putting them on or in theatre? 🤔

Gloves are currently tested for strength but real-world conditions often lead to sudden glove failures from small holes or tears.

Instead of strength we should test for fracture toughness.
#medicalgloves #PPE

[Travis Dodd @TravisDodd8]

Ever thought your N95 or FFP2 mask works like a kitchen sieve? 🤔
It doesn't!
I've created an article over on LinkedIn explaining how your average Respiratory device functions. It's more complex than it seems.
#N95 #FFP2 #MaskScience

https://t.co/JSghqGw3eX

[Travis Dodd @TravisDodd8]

Ever wondered why some respirators say the 94% vs. 95% efficiency?

The difference? Testing methods. FFP2 tests at flow rate of 95 L/min, while N95 is at 85 L/min.

For every 1 L/min increase in flow rate, filtration efficiency drops by about 0.1%. Hence, the 1% difference.