LECTURE 11 - ENGR 4045U Quality Control Lecture 11 1...

Info icon This preview shows pages 1–12. Sign up to view the full content.

View Full Document Right Arrow Icon
ENGR 4045U Quality Control Lecture 11 1
Image of page 1

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

View Full Document Right Arrow Icon
Schedule Week 6 Part IV: Other Statistical Process-Monitoring and Control Techniques. Chapter 9: Cumulative Sum and Exponentially Weighted Moving Average Control Charts. Chapter 10: Other Univariate Statistical Process Monitoring and Control Techniques. Week 7 Chapter 11: Multivariate Process Monitoring and Control. Chapter 12: Engineering Process Control and SPC. 2
Image of page 2
Schedule Week 8 Part V: Process Design and Improvement with Designed Experiments. Chapter 13: Factorial and Fractional Experiments for Process Design and Improvements. Week 9 Chapter 14: Process Optimization and Designed Experiments. Week 10 Midterm-2 3
Image of page 3

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

View Full Document Right Arrow Icon
Standardized x-bar and R charts If the process standard deviations are different for different parts, use standardized x-bar and R charts. 4
Image of page 4
Standardized Attributes 5
Image of page 5

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

View Full Document Right Arrow Icon
Modified Control Chart Use specified sample size n A process fraction nonconforming Type I error probability This means that a process fraction nonconforming that we will accept with probability (1- ) 6
Image of page 6
Modified Control Limits for X-bar chart 7
Image of page 7

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

View Full Document Right Arrow Icon
Example Process normally distributed with target value of the mean of 20, standard deviation = 2= LSL=8, USL=32, if process is centered at target, This is a process with six-sigma where the drift of the mean up to 1.5 standard deviations off target without causing serious problems. 8 0 . 2 pk p C C
Image of page 8
Solution 9
Image of page 9

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

View Full Document Right Arrow Icon
Acceptance Control Chart Approach to monitor the fraction of the nonconforming units or the fraction of units exceeding specifications, called Acceptance Control Chart Consider the risk of accepting a process that is operating at an unsatisfactory level (type II error or -risk) 10
Image of page 10
Acceptance control chart Monitor fraction of nonconforming or exceeding specification Design control chart based on n and process fraction nonconforming that we reject with probability 1- 11 n Z Z USL n Z Z LSL n Z LCL n Z Z USL n Z Z USL n Z UCL L U
Image of page 11

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

View Full Document Right Arrow Icon
Image of page 12
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    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.

    Student Picture

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

  • Left Quote Icon

    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.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    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.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern