#463: Meshaping

Finite element methods are commonly used in engineering design. You create a CAD drawing of your component, automatically divide it up into a mesh of a million tetrahedra, apply some realistic loading boundary conditions and material properties and finally compute a detailed stress map within the design. If you are nearing yield stress anywhere, it’s time to think again either about geometry or material spec.

Today’s invention is simply then to use the 3-D mesh of tetrahedra as a specification from which to actually build your design. I’d like to see this happen using a rapid prototyping system. Each tetra could be ‘printed’ as a net of four triangles, joined along three edges. As each is produced, it would be automatically folded and the six free edges bonded into the 3-D ‘pyramid’. The system would spit these physical elements out in the correct sequence (and orientation) for them to be bonded together to create the overall design.

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This would already have been shown to withstand the required in-service stresses. It would represent a huge material saving, compared to using bulk material, and although the final shape would still have a rougher ‘crystalline’ outer surface, this would be a structure with low form drag and a genuine wow factor in the marketplace (think Ducati frame taken to extremes).

#462: Soundsearch

Search has become fascinating for two reasons: the recent availability of an abundance of interesting stuff (if only you knew where it was) and the possibility of automating its retrieval.

One of the biggest problems, it seems to me, is that we currently aren’t really making use of all the tools available to us. It’s still hard work to find things visually or kinaesthetically in a reliable way, but sound offers a more tractable approach.

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Today’s invention is to store a phonetic representation of every word in a document or webpage. This would enable a search by sound to occur in which we could say “find me things that sound like fandango” or even, in wildcard mode “…things that sound like blahblah_blah_blah_ford.” This is pretty much how I try to retrieve people’s names from my own memory, and it seems particularly good for things whose names don’t mean anything but whose phonemes may be identifiable as words …eg brands like coca-cola or phentermine or whatever.

This makes me wonder if, by populating one’s website with spam brandnames, you would be less bothered by the makers of smarter, targeted spam (the kind of message about which you think ‘is that spam or is it a genuine message?’ ). These people know it’s a bad idea to pepper spam blockers with data that helps them extract a characteristic pattern and thus defend themselves.