Chapter 3 Lab Session Assignment Exercise 3.6 IE 441

Chapter 3 Assignment Lab Session Assignment IE 441 (Wednesday, 1/28/09)

Your first assignment from the text is Problem 3.6. It is due Monday, 1/30/09.(negotiable)

You may submit this assignment alone or in groups of up to four students. If you submit the assignment in groups, copy the your other group members in your e-mail, and list your name and the other students names in the text of the e-mail. List the values for the statistics requested in the text of of the e-mail. Lists or tables values are acceptable. Submit a working *.doe attached to an e-mail to your instructor. I have not yet got D2L setup for the class.

Hint: You can find out the number that fail and the number that pass by looking on the main window of the program.

No write up for this short assignment.

Problem 3.6 is listed below. Below that is the checksheet that I will use for grading the assignment.

Modify Model 3-1 with all of the following changes: Add a second machine to which all parts go immediately after exiting the first machine for a separate kind of processing (for example, the first machine is drilling and the second machine is washing). Processing times at the second machine are the same as for the first machine. Gather all the statistics as before, plus the time in queue, queue length, and utilization at the second machine. Immediately after the second machine, there's a pass/fail inspection that takes a constant 5 minutes to carry out and has an 80% chance of a passing result; queueing is possible at inspection, and the queue is first-in, first-out. All parts exit the system regardless of whether they pass the test. Count the number that fail and the number that pass, and gather statistics on the time in queue, queue length, and utilization at the inspection center. (HINT: Try the Decide flowchart module.). Include plots to track the queue length and number busy at all three stations. Configure them as needed. Run the simulation for 480 minutes instead of 20 minutes.

Exercise 3-6
Student's Names
Check sheet		grade	Max
second machine			5
	same processing times		5
	report statistics in e-mail		3
Inspection block			5
	5 minute delay queue		5
	report statistics in e-mail		3
decide block			5
	80% pass		2
count the pass & fail			5
Plots
	queue length 3 machines		6
	number busy 3 machines		6
	Labels easy to understand		3

Run for 480 minutes			2
Program runs correctly			10
	sum		65