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First Course in Quality Engineering
KS Krishnamoorthi, Bradley University

ISBN-10: 0131472011
ISBN-13: 9780131472013

Publisher: Prentice Hall
Copyright: 2006
Format: Paper; 528 pp
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Suggested retail price: $128.00
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For senior-level courses in quality methodology for engineering majors.

 

This text contains virtually all the information an engineer would need to function as a quality engineer. The author covers management methods and statistical methods of quality in an integrative manner –  unlike other books on the subject, which focus primarily on one of the two areas of quality.  Many real world examples, drawn from the author’s consulting work, illustrate the use of quality methods. Mini projects help students understand and solve real problems. 

• Reader-friendly writing style — Makes material more approachable and encourages self-study.

 

 

• Coverage of must-know fundamentals of probability and statistics in one chapter (Chapter 2) –Provides the basic understanding of probability and statistics fundamentals to help students understand the statistical tools of quality well and use them properly.

 

 

      

Extensive use of computer software to illustrate the use of computer in solving quality problems.

 

 

 An Instructor's solutions manual is available wherein all end-of-chapter problems are fully worked out with explanation of each step.

 

 

Preface xiii

 

1 Introduction to Quality 1

 

A Historical Overview 1

A Note about “Quality Engineering” 5

Defining Quality 7

Product Quality vs. Service Quality 8

The Total Quality System 9

Total Quality Management 11

Economics of Quality 12

Quality, Productivity, and Competitive Position 13

Quality Costs 14

A Case Study in Quality Costs 27

Success Stories 32

Cadillac Motor Car Company (Winner of the 1990 MBNQA) 32

Boeing Airlift and Tanker Programs (Winner of the 1998 MBNQA) 34

Exercises 37

Mini-Project 1.1 40

Mini-Project 1.2 41

References 42

 

2 Statistics for Quality 43

 

Variability in Populations 43

Some Definitions 44

Section I: Empirical Methods for Describing Populations 46

The Frequency Distribution 46

The Histogram 47

The Cumulative Frequency Distribution 48

Numerical Methods for Describing Populations 52

Calculating the Average and Standard Deviation 53

Other Graphical Methods 54

Stem-and-Leaf Diagram 54

Box-and-Whisker Plot 55

Other Numerical Measures 56

Measures of Location 56

Measures of Dispersion 56

Exercise in Empirical Methods 57

Section II: Mathematical Models for Describing Populations 59

Probability 59

Definition of Probability 60

Computing the Probability of an Event 60

Theorems on Probability 63

Counting the Sample Points in a Sample Space 70

Exercise in Probability 73

Probability Distributions 75

Random Variable 75

Probability Mass Function 76

Probability Density Function 78

The Cumulative Distribution Function 79

The Mean and Variance of a Distribution 80

Some Important Probability Distributions 82

The Binomial Distribution 83

The Poisson Distribution 85

The Normal Distribution 86

Distribution of the Sample Average 93

The Central Limit Theorem 94

Exercise in Probability Distributions 95

Section III: Inference of Population Quality from a Sample 96

Definitions 96

Confidence Intervals 98

CI for the of a Normal Population When Is Known 98

Interpretation of CI 99

CI for When Is Not Known 99

CI for of a Normal Population 100

Hypothesis Testing 102

Test Concerning the Mean of a Normal Population When

Is Known 103

Why Place the Claim Made About a Parameter in 105

The Three Possible Alternate Hypotheses 106

Test Concerning the Mean of a Normal Population When

Is Not Known 107

Test for Difference of Two Means When Are Known 108

Tests for Normality 110

Use of the Normal Probability Plot 110

Normal Probability Plot on the Computer 112

A Goodness-of-Fit Test 113

The P Value 115

Exercise in Inference Methods 116

Mini-Project 2.1 117

Mini-Project 2.2 118

References 119

 

3 Quality in Design 120

 

Planning for Quality 120

The Product Creation Cycle 120

Product Planning 122

Finding Customer Needs 122

Quality Function Deployment 126

Reliability Fundamentals 131

Product Design 140

Parameter Design 140

Design of Experiments 141

Tolerance Design 156

Failure Mode and Effect Analysis 161

Concurrent Engineering 164

Process Design 166

The Process Flow Chart 167

Process Parameter Selection: Experiments 169

Floor Plan Layout 173

Process FMEA 173

Process Control Plan 173

Other Process Plans 175

Exercises 178

Mini-Project 3.1 181

Mini-Project 3.2 181

Mini-Project 3.3 181

References 182

 

4 Quality in Production: Process Control–I 184

 

Process Control 184

The Control Charts 185

A Typical Control Chart 186

Measurement Control Charts 188

and R-Charts 189

A Few Notes About the and R-Charts 194

and S-Charts 205

Attribute Control Charts 209

The P-Chart 209

The C-chart 212

Some Special Attribute Control Charts 214

The P-Chart with Varying Sample Size 214

The nP-Chart 217

The Percent Defective Chart (100P-chart) 218

The U-Chart 218

A Few Notes About the Attribute Control Charts 221

vii.Summary of Control Charts 223

Implementing SPC on Processes 224

Process Capability 229

Capability of a Process with Measurable Output 229

Capability Indices and 229

Capability of a Process with Attribute Output 233

Measurement System Analysis 234

Properties of Instruments 234

Measurement Standards 236

Evaluating an Instrument 237

Exercises 246

Mini-Project 4.1 250

Mini-Project 4.2 250

References 251

 

5 Quality in Production: Process Control–II 253

 

Derivation of Limits 254

Limits for the 254

Limits for the R-Chart 257

Limits for the P-chart 258

Limits for the C-Chart 259

Operating Characteristics of Control Charts 259

Operating Characteristics of an 259

OC Curve of an R-Chart 262

Average Run Length 263

OC Curve of a P-Chart 266

OC Curve of a C-Chart 268

Measurement Control Charts for Special Situations 269

and R-Charts when Standards for and/or Are Given 269

Control Charts for Slow Process 274

Control Chart for Individuals (X-Chart) 274

Moving Average and MR Charts 276

The Exponentially Weighted Moving Average Chart 279

Control Charts for Short Runs 286

The DNOM Chart 287

The Standardized DNOM Chart 289

Topics in Process Capability 291

The Index 292

Confidence Interval for Capability Indices 294

Motorola’s Capability 296

Topics in Design of Experiments 300

Analysis of Variance 300

The General Design 306

Design 306

Fractional Factorials: One-Half Fractions 308

viii.Exercises 318

Mini-Project 5.1 321

Mini-Project 5.2 321

References 322

 

6 Managing for Quality 323

 

Managing Human Resources 323

Importance of Human Resources 323

Organizations 324

Quality Leadership 327

Customer Focus 329

Open Communications 331

Empowerment 332

Education and Training 334

Teamwork 339

Motivation Methods 346

Principles of Management 347

Strategic Planning for Quality 347

History of Planning 347

Making the Strategic Plan 349

Strategic Plan Deployment 351

Exercises 351

Mini-Project 6.1 351

References 351

 

7 Quality in Procurement 353

 

Importance of Quality in Supplies 353

Establishing a Good Supplier Relationship 354

Essentials of a Good Supplier Relationship 354

Single vs. Multiple Suppliers 354

Choosing a Supplier 356

Certifying a Supplier 357

Specifying the Supplies Completely 357

Auditing the Supplier 358

Supply Chain Optimization 359

Using Statistical Sampling for Acceptance 363

The Need for Sampling Inspection 363

Single Sampling Plans for Attributes 365

The Operating Characteristic Curve 365

Designing an SSP 368

Double Sampling Plans for Attributes 371

MIL-STD-105E 377

Average Outgoing Quality Limit 380

Some Notes About Sampling Plans 391

Exercises 392

References 393

 

8 Continuous Improvement of Quality 395

 

The Need for Continuous Improvement 395

The Problem-Solving Methodology 396

Deming’s PDCA Cycle 396

Juran’s Breakthrough Sequence 398

The Generic Problem-Solving Methodology 399

Quality Improvement Tools 402

Cause-and-Effect Diagram 402

Brainstorming 403

Benchmarking 404

Pareto Analysis 408

Histogram 410

Control Charts 411

Scatter Plots 412

Regression Analysis 414

Correlation Analysis 424

Exercises 428

Term Project 8.1 430

References 430

 

9 A System for Quality 431

 

The Systems Approach 431

Dr. Deming’s System 432

Long-Term Planning 433

Cultural Change 434

Prevention Orientation 434

Quality in Procurement 434

Continuous Improvement 435

Training, Education, Empowerment, and Teamwork 436

Dr. Juran’s System 440

Quality Planning 441

Quality Control 443

Quality Improvement 444

Dr. Feigenbaum’s System 447

Baldrige Award Criteria 450

Criterion 1: Leadership 452

Criterion 2: Strategic Planning 453

Criterion 3: Customer and Market Focus 454

Criterion 4: Measurement, Analysis, and Knowledge

Management 454

Criterion 5: Human Resource Focus 455

Criterion 6: Process Management 456

Criterion 7: Business Results 458

ISO 9000 Quality Management Systems 459

The ISO 9000-2000 Family of Standards 459

The Eight Quality Management Principles 460

Documentation in ISO 9000 462

ISO 9001-2000 Requirements 462

Quality Management System 463

General Requirements 463

Documentation Requirements 463

Management Responsibility 464

Management Commitment 464

Customer Focus 464

Quality Policy 464

Planning 465

Responsibility, Authority and Communication 465

Management Review 465

Resource Management 466

Provision of Resources 466

Human Resources 466

Infrastructure 466

Work Environment 466

Product Realization 467

Planning of Product Realization 467

Customer-Related Process 467

Design and Development 468

Purchasing 469

Production and Service Provision 469

Control of Monitoring and Measuring Devices 471

Measurement, Analysis and Improvement 471

General 471

Monitoring and Measurement 472

Control of Nonconforming Product 472

Analysis of Data 473

Improvement 473

The Six Sigma System 474

Six Themes of Six Sigma 474

The Measure 476

The Three Strategies 477

The Two Improvement Processes 478

The Five-Step Road Map 478

The Organization for Six Sigma 481

Summary of Quality Management Systems 481

Exercises 483

Mini-Project 9.1 485

Mini-Project 9.2 485

References 485

 

Appendix Statistical Tables 486

 

Answers to Selected Exercises 496

 

Index 505

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