Engineering College

A cone-shaped part is to be fabricated using stereolithography. The radius of the cone at its base = 35 mm, and its height = 50 mm. To minimize the staircase effect, layer thickness = 0.05 mm. The diameter of the laser beam = 0.22 mm, and the beam is moved across the surface of the photopolymer at a velocity of 900 mm/s.

Required:
Compute an estimate for the time required to build the part, if 15 s are lost each layer to lower the height of the platform that holds the part. Neglect post-curing time. Setup time for the job = 25 min.

Answers

Answer 1

Explanation:

volume = πR²h/3

= πx35²x50/3

= 192325/3

= 64166.725

number of layers n = 50mm/0.05

n = 1000layers

average volume = 64166.725/1000

= 64.167mm³

average area = 64.167/0.05

= 1283.34mm²

average time = 1283.34/900mm x 0.22

= 6.48

6.48 + 15 seconds

= 21.48 seconds

time required = 1000x21.48

= 21480 seconds

convert to minutes

21480/60

= 358 minutes

21480/3600

= 5.967 hours

Related Questions

Water that has evaporated returns to earth as

Answers

Answer:

rain

Explanation:

evaoration causes clouds

clouds condense and rain

Answer:

rain

Explanation:

A hot brass plate is having its upper surface cooled by impinging jet of air at temperature of 15°C and convection heat transfer coefficient of 220 W/m^2•K. The 10-cm thick brass plate (rho = 8530 kg/m^3, cp = 380 J/kg•K, k = 110 W/m•K, and α = 33.9×10^–6 m^2/s) has a uniform initial temperature of 900°C, and the bottom surface of the plate is insulated.

Required:
Determine the temperature at the center plane of the brass plate after 3 minutes of cooling.

Answers

Answer:

809.98°C

Explanation:

STEP ONE: The first step to take in order to solve this particular Question or problem is to find or determine the Biot value.

Biot value = (heat transfer coefficient × length) ÷ thermal conductivity.

Biot value = (220 × 0.1)÷ 110 = 0.2.

Biot value = 0.2.

STEP TWO: Determine the Fourier number. Since the Biot value is greater than 0.1. Tis can be done by making use of the formula below;

Fourier number = thermal diffusivity × time ÷ (length)^2.

Fourier number = (3 × 60 × 33.9 × 10^-6)/( 0.1)^2 = 0.6102.

STEP THREE: This is the last step for the question, here we will be calculating the temperature of the center plane of the brass plate after 3 minutes.

Thus, the temperature of the center plane of the brass plane after 3 minutes = (1.00705) (0.89199) (900- 15) + 15.

= > the temperature of the center plane of the brass plane after 3 minutes = 809.98°C.

what is the answer What will finally break the internet?

Answers

Hmmm I think it’s impossible to break it like over 100 million people use it

in software engineering how do you apply design for change?

Answers

Answer:

it is reducely very iloretable chance for a software engineer to give an end to this question

I need help with online lab

Answers

Answer:

I believe on the fist question it power rationg

What is one advantage corporations have over other types of businesses

Answers

liability, easy transferring of owner ships
Other Questions
What would happen if there was no civil rights movement? Nikki used the calculations shown to determine whether a carton of 12 eggs or a carton of 18 eggs was the better buy. A carton of 12 eggs cost $2.39, and a carton of 18 eggs cost $3.39. Unit price of the 12-egg carton = ($2.39)(12 eggs) = $28.68 per egg Unit price of the 18-egg carton = ($3.39)(18 eggs) = $61.02 per egg The 12-egg carton has the lower unit cost, so it is the better buy. What was her first error? What do you do in algebra Simplify: 12x + 4(-7x + 3) The sum of a number and its reciprocal is 6.41. What is the number? deposition is when _____ is dropped off in a ____ ______i need help with the blanks write a descriptive paragraph of 5-7 sentences about ur favorite food Classify the numbers as rational or irrational.7 147 + 147./14rationalirrational How do you do this question? How do you make vores plural in Spanish? (please mark ALL that apply) *adds to words ending in a voweladds to words ending in a consonantadd es to words ending in a voweladd es to words ending in a consonant when recounting this story which characters are most important to include 4. The cost of a long-distance telephone call is $.50 for making the call and $.10 per minute. What is the slope? What does it represent? Write a short passage on one section in global village(clothes - shopping - tourism - singing - exist - beautiful - spices) What was theStamp Act? Find the area of the figure. (Sides meet at right angles.)9 inin5 inB in4 in a.Which of the following is not true of the Fertile Crescent?The Tigris and Euphrates rivers run through the Fertile Crescentb The Fertile Crescent frequently experience flooding.C. Societies of the Fertile Crescent believed in equality and communal living.dThe first water management systems were created in this region, which led to the first cities. Using the figure below, find the measure of z ( just enter in the number for your answer dont worry about the degree symbol or saying degrees after the number Cost of Bank Loans Gifts Galore Inc. borrowed $1.6 million from National City Bank. The loan was made at a simple annual interest rate of 12% a year for 3 months. A 25% compensating balance requirement raised the effective interest rate. Do not round intermediate calculations. Round your answers to two decimal places. The nominal annual rate on the loan was 11.5%. What is the true effective rate? % What would be the effective cost of the loan if the note required discount interest? % What would be the nominal annual interest rate on the loan if the bank did not require a compensating balance but required repayment in three equal monthly installments? % The sum of three consecutive integers is 42. Determine the value of the smallestinteger. The product of a and 52 is the same as 676