Student version - Ch6 - part 2

Student version - Ch6 - part 2 - MGMT 361 Operations...

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1 MGMT 361 Operations Management (OM) Chapter 6 Quality Management - 2 Prof. Julia A. Kalish
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2 Announcements: Read the case study from your textbook will be discussed after spring break. Please read ! “Hank Kolb, Director of Quality Assurance,” pg. 284-285. Watch 2 videos that are posted on Facebook, were sent in an email, and are posted below. Manufacturing Quality: Honda (12 min) mms://video.dis.purdue.edu/bns/management/MGMT460_ManufacturingQualityHonda_080 819.wmv SPC at Honda (7 min) mms://video.dis.purdue.edu/bns/management/MGMT460_SPCatHonda_080819. wmv HW4 : Due on Mar 22 . Tuesday *Different than syllabus. Test 2 : 6:30-7:30 pm on Mar 24. in PHYS 112 (same place where you took Test1). The other sections will be next door – DON’T GO THERE!
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3 Quality Control Where to Inspect in the Process? Raw materials and purchased parts Finished products Before a costly operation Before an irreversible process Before a covering process
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4 Quality Control (QC) 1. Acceptance sampling : For incoming material (and sometimes outgoing) 2. Process control: During process 3. Process capability Acceptance sampling Process control Acceptance sampling
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5 Suppose our supplier has sent us a “lot” containing 1000 items. How do we ensure quality of this incoming lot? 1. Accept the lot without inspection (counting, cursory visual inspection). 2. Check 100% items. 3. Check some predetermined number from top layer. 4. Check number of items ( based on statistical principles), randomly selected from the entire lot. Acceptance Sampling Acceptance sampling Process control
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6 Acceptance Sampling Check number of items ( based on statistical principles), randomly selected from the entire lot. Various sampling plans have been developed. If the inspection involves measurements, we have plans involving variables (measuring dimensions). If the inspection involves counting, we have plans involving attributes (go or no go). Standards: MIL standard, ISO, … Types of plans: Single – double – sequential sampling plans.
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7 Sampling Plan Characteristics Probability distribution for defective units is assumed. The customer is willing to accept agreed % defective. Both customer and supplier willing to face some risk: Customer’s risk : accepting bad lot because the sample happens to be good.
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This note was uploaded on 03/03/2012 for the course MGMT 361 taught by Professor Panwalker during the Spring '10 term at Purdue.

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Student version - Ch6 - part 2 - MGMT 361 Operations...

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