Acceptance Sampling Lecture - Military Standard 105 D 1...

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Acceptance Sampling Ahmed S. Shaban TA, Industrial Engineering Dept., Faculty of Engineering, Fayoum University
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Objectives
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Sampling Concept Example
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Solution Two cases for acceptance:
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Solution – Cont.
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Solution – Cont.
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Random Sampling Example
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Solution
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Operating Characteristic Curves
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Constructing OC Curves
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Steps to construct OC curve
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Example Construct OC curve for the following sampling plan (n = 200, c = 8) 1- Complete the following table
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Example – Cont. Pa values are obtained from Poisson chart
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OC Graph
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Example Construct OC curve for the following sampling plan (n = 200, c = 6) 1- Complete the following table
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Example – Cont. Pa values are obtained from Poisson chart
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OC Graph
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Average Quality Level (AQL) 1. From the view of Military Standards (MLT – STD-105D) 2. From the view of Quality Control Handbook, 3 rd ed.
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Indifference Quality Level (IQL)
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Rejection Quality Level (RQL)
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Unformatted text preview: Military Standard 105 D 1. Choose the acceptance Quality Level (AQL). 2. Choose the inspection level. 3. Determine the lot-size. 4. Find the appropriate sample size code letter 5. Determine the appropriate type of sampling plan to use. 6. Enter the appropriate table to find the type of plan to be used. 7. Determine the corresponding normal and reduced inspections plans to be used. Example Solution Solution 1- Sample Size Code Letter Code Letter (L) Solution Solution 2- Enter the appropriate table (AQL, Single Sampling Plan) Solution Solution Sampling Plan Sampling Plan Sample size n = 200 Sample size n = 200 Acceptance criteria c = 5 Acceptance criteria c = 5 Example Solution Solution 1- Sample Size Code Letter Code Letter (L) Solution Solution Sampling Plan Sampling Plan First Sampling n1 = 125, c1 = 3, r1 = 7 First Sampling n1 = 125, c1 = 3, r1 = 7 Second Sampling n2 = 125, r2 = 8 Second Sampling n2 = 125, r2 = 8 Questions Q # 1 Q # 2 Questions – Cont. Q # 3 Q # 4...
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