{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

This preview shows pages 1–9. Sign up to view the full content.

ME 350 – Lecture 13 – DOE Design of Experiments Quality Control Gaussian distributions Quality Loss Function 2 k Factorial Design

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Goal of Quality Control Strategic view of Quality Design and Improvement:
Example Experiment Control variable 1, x 1 : extruder temperature Control variable 2, x 2 : injection time Output measurement, y: part weight (goal is 25 oz)

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Two approaches to Quality Control: 1. Inspection and part rework 1. Continual process improvement
Gaussian Distributions Gaussians have: 1. Mean (average), μ 2. Standard deviation, σ 3. Variance, σ 2 4. Tolerance: 2σ = 4σ = 6σ = Variance of a system: σ 2 = Tolerance of a system: σ =

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
A part with a “hole” must match up with another containing a “pin.” The hole and pin tolerances ( ) are 15 mil. Thus the clearance distribution between the parts is: Quality Control: Gaussian Distribution
Quality Control: Rework Distribution Same problem as before (tolerances are 15 mil). Thus the clearance distribution is:

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Quality Loss Function The deviation of a product from its nominal value
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern