TEAM MEMBERS ALRUBAYAN, FAWAZ ALSUWAIDI, HAMAD AYVAZYAN, DAVID KALANTARI, MAHRAM GERSON, SEGOVIA California State University, Northridge PROFESSOR: HAMADE,

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