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ezzyandrade7
05.05.2020 •
Mathematics
2. A prototype of a part is to be fabricated using stereolithography. The base of the part is shaped like a right triangle with dimensions 36 mm by 48 mm. The height of the part = 30 mm. Layer thickness = 0.15 mm, and laser spot diameter = 0.15 mm. The beam velocity across the surface of the photopolymer = 2200 mm/s. the minimum possible required to build the part, if 25 s are lost each layer to lower the height of the platform that holds the part. Ignore setup time and post processing.
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Ответ:
Step-by-step explanation:
In your question 30mm should be the thickness. Also, the minimum possible time is required.
SOLUTION:
The part should be oriented on its side in stereo lithography, thus laser Area A is same for all layers.
A= 1/2 (b x h) =>0.5 (36 x 38)
A= 864 mm²
Time to complete one layer 'T' is same for all layers
T= [(A/spot size x velocity)+ last time]
T=[(864/ 0.15x2200) +25]
T=27.62 sec
Number of layers 'n' is given by:
n= t/ layer thickness =>30/0.15
n= 200 layers.
Next is to determine minimum possible time required,
Ответ:
Choice C
Step-by-step explanation: