TEAM MEMBERS•ALRUBAYAN, FAWAZ•ALSUWAIDI, HAMAD •AYVAZYAN, DAVID•KALANTARI, MAHRAM•GERSON, SEGOVIA
California State University, NorthridgePROFESSOR: HAMADE, JAY
SPRING 2013
MSE 618SIX SIGMA
CATAPULT PROJECT PRESENTATION
AGENDA Define Phase
Measure Phase
Analyze Phase
Improve Phase
Control Phase
Q-A
Define Phase
PROJECT CHARTER
SIPOC ANALYSIS
VOC ANALYSIS
Problem Statement
In the beginning of the semester of Spring 2013, about 45% of the CSUN Students at Northridge university using the Catapult for ball toss complained that the distance travelled by the ball doesn’t achieve their request specification of 6’ shooting range +/- 2 inches. Results show that the profit reduced in comparison with the Fall of 2012 by 15% according to the customers service. What is wrong? CSUN Students complain. Where it happened? Northridge University.When it occurred? Beginning of the semester of Spring 2013.To what extent? 45% of the CSUN Students, request specification range +/- 2 inches profit reduced in comparison with the Fall 2012 by 15%.
Goal Statement
1. Develop a catapult that will meet client expectation of accuracy. (+/- 2 inch at 6’ target projection length) 2. Reduce the costumers complaint by 35% (from 45% to 10%) by the end of Spring 2013.2. Reduce the error of no larger than +/- 2 inches.3. Increase the revenue by 10% by the end of Spring 2013.
Schedule, Roles and Responsabilities
Project Start Date:
February 19, 2013
Project End Date: May 07, 2013
Sponsor: David K. Ayvazyan
Project Manager: Gerson A. Segovia
Team Members: Fawaz AlrubayanHamad AlsuwaidiMahram Kalantari
SIPOC Diagram- Catapult Project
Suppliers
• Home Depot• Lowe’s• Ace• Anawalt
Lumber
Inputs
• Wood• Glue• Screws• Pins• Rubber
band• Safety
glasses• Tape• Arms• Cap
Process Outputs
• Beautiful & accurate catapult
Customers
• Prof. Hamade
• Kids• Students
Requirements
• Shoot 6 feet• Great
Quality• Safety
Voice of Customer
-Catapult(process output)-Professor & students-Reactive Voice-Professor’s feedback-Proactive Voice-Direct customer observation-ask customer personally what they want
Measure Phase
Primary Metric Our primary metric is the distance between the catapult and the place our object hits the ground
Secondary Metric Our Secondary metric is the height which we locate our catapult as it would have great impact on the distance our object could go.
Primary & Seconday Metrics
Gage R&R ANOVA Output
Total Gage R&R =8.05%
Ideal (< 10%)
Acceptable (< 30%)
Number of Distinct Categories=3
Recommended (≥ 5)
Total Gage R&R =8.05%
Ideal (< 10%)
Acceptable (< 30%)
Number of Distinct Categories=3
Recommended (≥ 5)
Gage R&R-Graphical Output
Normality Test
Capability Analysis
Ppk = (0.46) < 1.33
Sigma level = 0.46*3= 1.38
Analyze Phase
Detailed Process Map
Input
WoodOperatorBlueprint Tools
Output
BaseInput
WoodGlueOperator Tools
Output
Base w/side
Detailed Process Map(Continued)
Input
WoodGlueBoltsToolsVariable Fit Arm
Output
Base with Side and arms
Input
Rubber Band CupsPins
Output
Finished catapult
Improve Phase
INTERACTION PLOT FOR RESULTS
•This Graph helps us look at the important relations between the 3 sources of error
•It shows us how big each effect is
•In order to get highest yield from our experiment, angle should be set to point on the base 4, position of the stationary arm pin should be set to 3 and position of the pin on the moving arm to 3
NORMAL PLOT OF THE EFFECTS
The Normal Plot and Pareto Chart shows
Which effects influence the yield?
The graph shows all the points are outside.
MAIN EFFECTS PLOT FOR RESULTS
•The Plot shows the effects of changing the angle and the positions of the pins on the standing and moving arm
•as we can see that the Positions of the Pins on the Stationary Arm has the major effect on achieving the target spec and then the Position of the Pin on Moving Arm
CUBE PLOT FOR RESULT•From The Cube Plot, in order To Get The Desired requirement Of The Distance i.e. 72 inches,
-The Angle should be set to point 4
-The Position of the Pin on the Fixed Arm should be between 1 & 3
-The Position of the Pin on the Stationary Arm should also be at 2
OPTIMIZATION PLOT•As the name suggest, the plot gives the combination of effects for optimum efficiency, i.e. to meet the desired specifications
•In our case, the Angles should be set to point 4
The Position of the Pin on the Fixed Arm should be at point 1.7822
The Position of the Pin on the Stationary Arm should be at point 1.4021
Control Phase
Normality Test
Xbar-R Chart
I-MR Chart
Conclusion