diff --git a/README.md b/README.md index 70da52dd6965f5c3ca2d3d10dd1c4b20ba57938e..e1607d49b1bbd4ea0c1103b33abb299c7d78bbeb 100644 --- a/README.md +++ b/README.md @@ -1,6 +1,35 @@ # micro Stress vs Strain Machine -## Progress +## Dedicated uSSM + +Here I'm using some + - Ballscrews, SFU2005 C7 700mm Long [ebay, $150](https://www.ebay.com/itm/SFU2005-Rolled-Ballscrew-C7-Anti-Backlash-Ballnut-L300-350-400-450-500-600-1000/202274175696?hash=item2f187afad0:m:m2SEqt9q_ykYYkrO5ZM9deA:rk:1:pf:0) + - Nema 23 Motors w/ .25" Shaft + - - x - + - GT2 5mm 12mm Bore Pulley 28T for 15mm Belt 'A 6A55M028DF1512' + - GT2 5mm 12mm Bore Pulley 38T for 15mm Belt 'A 6A55M038NF1512' + - *pick* GT2 5mm 12mm Bore Pulley 48T for 15mm Belt 'A 6A55M048NF1512' + - GT2 5mm 6.35mm Bore Pulley 12T for 15mm Belt 'A 6A55-012DF1508' + - *pick* GT2 5mm 15mm Belt with 55T 'A 6A55M055NF1512' + + + +End of the line here is (1) to do small-scale material testing, OK. Next step is (2) to automate material search, doing a kind of real-time simplex where function evaluation is testing and DOF are process and recipe parameters. This is a cohesive, realizeable story. + +I would like to know: + - evaluation: pick: Stiffness and Tensile Strength? some weighted score from both? + - inputs: if we are to pick, say, 3 process parameters (to have 3D search space), what are they? + +## Next Steps + + - fab this thing + - finish waking up new network, new stepper boards / code + - finish hello-world CV on markers + - plot a stress/strain chart + - show high resolution stress / strain measurement w/o high stiffness machine + - show machine reference via known material? + +## Generalist does uSSM To test requisite parts for a small stress and strain machine, I attached some jaws and a load cell to [this 'generalist' machine](https://gitlab.cba.mit.edu/jakeread/mothermother). @@ -14,14 +43,13 @@ I used [automatakit](https://gitlab.cba.mit.edu/jakeread/automatakit) network co  -Probably the most interesting point is that Sam and I have decided to try using a webcam and some computer vision to track the position of the speciment endpoints. He's done some prior work, [here](https://gitlab.cba.mit.edu/calischs/subpixel_tracking). +Probably the most interesting point is that Sam and I have decided to try using a webcam and some computer vision to track the position of the specimen's endpoints. He's done some prior work, [here](https://gitlab.cba.mit.edu/calischs/subpixel_tracking). -## Next Steps + - - wake up ADC / find external high resolution ADC - - hello world computer vision on markers - - show high resolution stress / strain measurement w/o high stiffness machine - - show machine reference via known material? +# Microphone Stiffness Testing + +[Alisya did this in FabAcademy](http://archive.fabacademy.org/2017/fablabsantiago/students/356/project.html) and it would probably be a fun piece of kit / example for the NIST Project. Looks pretty simple... and compelling. # Design Spec / Notes diff --git a/cad/mother-mother-v02_instron.3dm.rhl b/cad/mother-mother-v02_instron.3dm.rhl new file mode 100644 index 0000000000000000000000000000000000000000..33adb9bbd1eadc3f53ee8725b4b7be1ab53cdc56 --- /dev/null +++ b/cad/mother-mother-v02_instron.3dm.rhl @@ -0,0 +1,3 @@ +Jake +JARVIS-THINKPAD +Thursday, January 24, 2019 \ No newline at end of file diff --git a/images/uSSM-detail-one.png b/images/uSSM-detail-one.png new file mode 100644 index 0000000000000000000000000000000000000000..fe28a8df36ebc86ae4979f06e76eb05451cf25cd Binary files /dev/null and b/images/uSSM-detail-one.png differ diff --git a/images/uSSM-detail-two.png b/images/uSSM-detail-two.png new file mode 100644 index 0000000000000000000000000000000000000000..82fac70d524cb5bee9788ad2c917b20b3f3d8427 Binary files /dev/null and b/images/uSSM-detail-two.png differ