The Certified Quality Engineer Handbook Ch. 23: Acceptance Sampling Dr. Joan Burtner Certified Quality Engineer Associate Professor of Industrial Engineering and Industrial Management

Acceptance Sampling Vocabulary Operating Characteristics (OC) Curve Chapter 23 Sampling Concepts Acceptance Sampling Vocabulary Operating Characteristics (OC) Curve Sampling Plan Designs Single Sampling Double Sampling Multiple Sampling ANSI/ASQ Z1.4-2003 Defect Classification Levels of Inspection ISE 428 ETM 591 JMB CH 23 Lecture 2 2 Spring 2014

Acceptance Sampling Handout Review Purpose of acceptance sampling Mathematical basis for acceptance sampling Single sampling plan variables: p1, p2, alpha, beta, n, c Specify four variables, deduce the other two (typically n and c) Sampling plan designs using a nomogram ISE 428 ETM 591 JMB CH 23 Lecture 2 3 Spring 2014

Industry-standard Prescription for Sampling Methods ANSI/ASQ Standards Industry-standard Prescription for Sampling Methods Defect Classification (page 211) Critical Major Minor Levels of Inspection (page 211) Normal Tightened Reduced Special ISE 428 ETM 591 JMB CH 23 Lecture 2 4 Spring 2014

ANSI/ASQ Switching Rules Figure 23.10 (page 212) Normal to tightened Tightened to normal Normal to reduced Discontinuation of Inspection ISE 428 ETM 591 JMB CH 23 Lecture 2 5 Spring 2014

Example 23.3 (page 205-206) Example 23.6 (page 214-215) CQE Textbook Examples Example 23.3 (page 205-206) Design of double sampling plan Decisions for accept or reject or continue Example 23.6 (page 214-215) Refers to CD-ROM tables Shows results for single, double, and multiple sampling ISE 428 ETM 591 JMB CH 23 Lecture 2 6 Spring 2014