Trade Study - structural testing methods

[Suzibianco]

Conduct trade studies to define the best method of stress testing to be used for Coral. Consider:

• Method name
• Equipment required
• Mass
• Volume
• Power
• Time it takes to test
• Type of stress test performed (Rate on scale of 1-10 how optimal the method is for test type, 10 being best)
  • Compressive stress
  • Tensile stress
  • Bending stress
  • Impact resistance

To clarify the difference between this issue and #91 : this issue is focused specifically on the manufactured sample, while issue #91 is focused on unprocessed regolith. This isn't to say that the hardware and software used to test unprocessed regolith may not be used to test the sample as well.

[timallard]

These ASTM tests are the best possible to go for with miniaturized machines without water, 99.9% of ASTM tests on sediments require water, these are for glass & ceramics: C1505-15, 158-92(2017), 147-86(2015), C1652 & M-14, E2431-12, C1650-14, 600-85(2015), 601-85(2015).

Most important to pull off are for flat glass, they're significant methods, especially for tempered-hardened that can be rolled vertically to replicate the method the latest thought, weight may be too high, one must have a tempering oven to cool glass as well, I have that worked out, so far it looks like 7-8 lbs without the roller.

[jrcgarry]

May I add to the list of desirable qualities to examine? Along with the strengths (compressive, tensile, etc.) one can derive Young's Modulus - the first derivative of strain vs. stress: and that gives you a 'rigidity'-like measure. Very handy.

Here, with my trusty Instron, is just such a test (a single squish-to-failure gives a lot of insight!) https://www.youtube.com/watch?v=2Pv2nq5lc-E