California State University, Northridge PROFESSOR: HAMADE, JAY SPRING 2013 MSE 618 SIX SIGMA CATAPULT PROJECT PRESENTATION Team Members aLRUBAYAn, fawaz ALSUWAIDI, HAMAD Ayvazyan, David KALANTARI, MAHRAM Gerson, Segovia

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 Alrubayan Hamad Alsuwaidi Mahram Kalantari

SIPOC Diagram- Catapult Project Suppliers Inputs Process Outputs Customers Requirements Home Depot Lowe’s Ace Anawalt Lumber Wood Glue Screws Pins Rubber band Safety glasses Tape Arms Cap Beautiful & accurate catapult Prof. Hamade Kids Students Shoot 6 feet Great Quality Safety Mount sides on base Put in fixed arm Machine variable arm Install pins and cap Install rubber band

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 & Seconday Metrics 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 Metric Our primary metric is the distance between the catapult and the place our object hits the ground

Gage R&R ANOVA Output 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

Base Sides Detailed Process Map Input Wood Operator Blueprint Tools Output Base Input Wood Glue Operator Tools Output Base w/side

Detailed Process Map(Continued) Arms Accessories Input Wood Glue Bolts Tools Variable Fit Arm Output Base with Side and arms Input Rubber Band Cups Pins 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