problem 1

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7/17/2019 Problem 1 http://slidepdf.com/reader/full/problem-1-569116788bac7 1/1 The frst part o this experiment involved varying the rater angle when abricating the test specimens The 4 test specimens were printed with a rater angle o 0°, 15°, 30° and 45° !"bse#"ently, the parts were s"b$ect to a tensile test %o"ng&s 'od"l"s (')a* +ltimate tensile !trength (')a* iterat"re 3500- 0 .egrees 0/455 1411/ 15 .egrees 0//02 15/3423 30 .egrees 0/15 1/00 45 .egrees 015 1353 "r calc"lated %o"ng&s 'od"l"s was o"nd to be on the order o 0/ ')a with a max o 0/4 ')a and a min o 01 This is smaller than 4 orders o magnit"de less than the val"e o ) o"nd in literat"re which is 3,500 ')a The man"act"ring process clearly has a signifcant impact on the strength o the fnal parts prod"ced 0 001 00/ 003 004 005 00 00 0 1 / 3 4 5 6aster 45 deg 6aster 30 deg 6aster 15 deg 6aster 0 deg !train (mm7mm* !tress (')a* Figure 1 Stress vs. Strain for Varied Raster Angle - http877wwwma9eitromcom7material:properties7)olylactic:cid:):)olylactide7

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Page 1: Problem 1

7/17/2019 Problem 1

http://slidepdf.com/reader/full/problem-1-569116788bac7 1/1

The frst part o this experiment involved varying the rater angle when abricating

the test specimens The 4 test specimens were printed with a rater angle o 0°, 15°,

30° and 45° !"bse#"ently, the parts were s"b$ect to a tensile test

%o"ng&s 'od"l"s (')a* +ltimate tensile !trength

(')a*

iterat"re 3500-0 .egrees 0/455 1411/15 .egrees 0//02 15/342330 .egrees 0/15 1/0045 .egrees 015 1353

"r calc"lated %o"ng&s 'od"l"s was o"nd to be on the order o 0/ ')a with a max

o 0/4 ')a and a min o 01 This is smaller than 4 orders o magnit"de less than

the val"e o ) o"nd in literat"re which is 3,500 ')a The man"act"ring process

clearly has a signifcant impact on the strength o the fnal parts prod"ced

0 001 00/ 003 004 005 00 00

0

1

/

3

4

5

6aster 45 deg

6aster 30 deg

6aster 15 deg

6aster 0 deg

!train (mm7mm*

!tress (')a*

Figure 1 Stress vs. Strain for Varied Raster Angle

- http877wwwma9eitromcom7material:properties7)olylactic:cid:):)olylactide7

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