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Bionic Balls

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Posts posted by Bionic Balls

  1. tbf i could not buy clothes for years and stil not have £5000, or the £15000 that in total i need. Im gonna need like 2 jobs to do this. but i think youre very right

    I literally didn't buy any clothes for a year...I needed Christmas socks! As for my bike...mess :P

  2. What's the harm in sending this part to Matt to analyse properly if there is no chance of a warranty replacement anyway? Whether the spacer was there or not, the failure could still be down to a manufacturing fault, which coincidentally happened to line up with some other features of the assembly.

    A lecturer at uni had a car part fail which the manufacturer told him was not covered under warranty because it was caused by bad driving style. He took some images using an SEM which clearly showed a casting defect resulting in a weak point in the part, sent them to the manufacturer, and they paid for the replacement :D

    I expect Matt's time is probably taken up with work that he's getting paid for... When I was at university someone told me about some Bontrager cranks that had broken by fatigue, clearly starting from where the "B" logo had been stamped...IE: a design fault..got his money back!

  3. The work hardening thing got me thinking...

    Work hardening involves plastic deformation, IE: at least the yield stress. Deformation in Ti involves lots of twinning (rather than dislocation motion) to get any deformation along the c-axis (HCP crystal) and I found something that says that twinning is more favourable at lower temperature, and I'm fairly sure I remember twinning being more effective at work hardening (than dislocations)..so..it seems quite possible..

    Geek moment over.

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