What is the surface roughness (Ra) of the MBP Aluminium family?

Hello Leroy,

Thanks for the response. Do you know how thin?

I kinna need specific numbers for this.

Thanks.

Samuel

For any who might be interested: The aluminium body on the MBP has a roughness (Ra) of 1.83 micrometers.

Thanks

Hallo Ogelthorpe,

I've just designed a camera chip that can use light to detect ultrasound signals from rough surfaces. It is useful for detecting subsurface structure, damage precursors, cracks or other defects. (Non Destructive Testing/Evaluation). From a scientific/engineering point of view detection of the ultrasound is challenging when the surface is not smooth (mirror-like finishes are fantastic and easy to work with). Its targetted at material characterisation, pipe inspection, thickness measurement, etc.

Imagine an ultrasound scanner that doesn't need contact with mother's skin to observe a foetus? What this detector does is analagous to doing that, doing it safely, and doing that even if mother is a hairy chimp.🙂

I wanted a relatively commonplace item to showcase what the detector can work with (roughness - how hairy mummy is), and the macbook pro aluminium popped into mind.

Good news is the detector can quite easily work with that roughness!🙂

Ciao!

Yes that is the same principle/function. We can find faults of micrometer size in aluminium, steel, titanium, composites, etc, so inspecting the hull would work fine and so would the rigging (I hope that answers your question - boats aren't my forté). I hope your friend's boat was alright.

Our tech hasn't yet matured enough to be used as a handheld device in the field, but here's hoping we get funds to get it there soon.