...Genichi Taguchi and Taguchi Methods - Practical, Rapid Quality Cohort 2, Wooshik Jung Taguchi methodology is concerned with the routine optimisation of product and process prior to manufacture, rather than emphasizing the achievement of quality through inspection. Instead concepts of quality and reliability are pushed back to the design stage where they really belong. The method provides an efficient technique to design product tests prior to entering the manufacturing phase. However, it can also be used as a trouble-shooting methodology to sort out pressing manufacturing problems. Here are some of the major contributions that Taguchi has made to the quality improvement world: 1. The Loss Function - Taguchi devised an equation to quantify the decline of a customer's perceived value of a product as its quality declines. Essentially, it tells managers how much revenue they are losing because of variability in their production process. It is a powerful tool for projecting the benefits of a quality improvement program. Taguchi was the first person to equate quality with cost. 2. Orthogonal Arrays and Linear Graphs - When evaluating a production process analysis will undoubtedly identify outside factors or noise which cause deviations from the mean. Isolating these factors to determine their individual effects can be a very costly and time consuming process. Taguchi devised a way to use orthogonal arrays to isolate these noise factors from all others in a cost...
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...of Experiments Research TAGUCHI METHOD Fernando de Castro Palomino Siller – A01191233 Thursday, September 17th, 2015 Professor: Héctor Rincón CONTENT Introduction ……………………………….………………………………… 3 Why to use Taguchi Method ……………………………….……………. 3-4 Taguchi Method Strategy ……………………………….………………… 4 P-diagram ……………………………….………………………………….. 5 Quality Measurement ……………………………….……………………. 5-6 Signal To Noise (S/N) Ratios ……………………………….…………… 6-7 Static Versus Dynamic S/N Ratios……………………………….………. 7 Steps in Robust Parameter Design ……………………………….……. 7-8 Conclusions ……………………………….……………………………….. 8 Bibliography ……………………………….……………………………….. 9 Introduction Taguchi methods are statistical methods developed by Dr. Genichi Taguchi to improve the quality of manufactured goods and greatly improve engineering productivity. Dr. Genichi Taguchi developed a method (also known as Robust Design) after the end of the Second World War and it has evolved over the last five decades. Many companies around the world have saved hundreds of millions of dollars by using this method in diverse industries like automobiles, xerography, telecommunications, electronics, software, etc. This method results in a much-reduced variance for the experiment with optimum settings of control parameters. Because Design of Experiments works extremely close with optimization of control parameters, you can achieve the best results with the Taguchi Method. Taguchi's uses functions...
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...IE 466: Concurrent Engineering T. W. Simpson 32.3 Taguchi’ Robust Design Method s Since 1960, Taguchi methods have been used for improving the quality of Japanese products with great success. During the 1980’ many companies finally realized that the old s, methods for ensuring quality were not competitive with the Japanese methods. The old methods for quality assurance relied heavily upon inspecting products as they rolled off the production line and rejecting those products that did not fall within a certain acceptance range. However, Taguchi was quick to point out that no amount of inspection can improve a product; quality must be designed into a product from the start. It is only recently that companies in the United States and Europe began adopting Taguchi’ robust design approaches in an effort to improve product s quality and design robustness. What is robust design? Robust design is an “engineering methodology for improving productivity during research and development so that high-quality products can be produced quickly and at low cost” (Phadke, 1989). The idea behind robust design is to improve the quality of a product by minimizing the effects of variation without eliminating the causes (since they are too difficult or too expensive to conrol). His method is an off-line quality control method that is instituted at both the product and process design stage to improve product manufacturability and reliability by making products insensitive to environmental conditions...
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...9/25/2015 9/25/2015 Priyanka Palamuru SCSU Priyanka Palamuru SCSU Design of Experiment on a Catapult Taguchi Design Design of Experiment on a Catapult Taguchi Design Objective The objective of this project is to analyze the effect of various factors controlling the catapult model using Design of experiments (DOE). Design : Taguchi Software : Minitab17 Introduction Design of experiments (DOE) is a method of finding the important and less important factors involved in an experiment through a number of steps such as information gathering and mathematical calculations either manually or using a software. It is considered as one of the accurate techniques and widely used in various fields such as engineering, healthcare, education, etc. It is also known for its quality improvement, efficiency, cost and effectiveness. Catapult experiment is generally used to demonstrate DOE as it has the simplest setup and meets the requirements for this method. Taguchi Design 1. Define the process objective i.e. whether we need the output to be maximum or nominal or smaller. In this experiment, it is given as nominal the best. 2. Determine the factors which affect the outcome and number of levels the factors can vary for performing the experiment. Here, the factors are Start angle, Stop position, Cup Position and Peg position and has three levels each. 3. Select the suitable orthogonal array based on number of factors and levels, prepare...
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...ROBUST DESIGN Seminar Report Submitted towards partial fulfillment of the requirement for the award of degree of Doctor of Philosophy (Aerospace Engineering) By SHYAM MOHAN. N (Roll No. 02401701) Under the guidance of Prof. K. Sudhakar Prof. P. M. Mujumdar Department of Aerospace Engineering, Indian Institute of Technology, Bombay–400 076 November, 2002 ABSTRACT The underlying principles, techniques & methodology of robust design are discussed in detail in this report with a case study presented to appreciate the effectiveness of robust design. The importance of Parameter design & Tolerance design as the major elements in Quality engineering are described. The Quadratic loss functions for different quality characteristics are narrated, highlighting the fraction defective fallacy. The aim of the robust design technique is to minimize the variance of the response and orthogonal arrays are an effective simulation aid to evaluate the relative effects of variation in different parameters on the response with the minimum number of experiments. Statistical techniques like ANOM (analysis of means) and ANOVA (analysis of variance) are the tools for analyzing the data obtained from the orthogonal array based experiments. Using this technique of robust design the quality of a product or process can be improved through minimizing the effect of the causes of variation without eliminating the causes. Fundamental ways of improving the reliability of a product are discussed...
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...Genichi Taguchi: Total Quality Management Guru Name: Institution: Course Code: Introduction Every person has had an experience with quality and every person can give his own reflection on what he perceived to be of poor or high quality. Not until the early 1950’s did total quality management emerge at the top of firms’ schemata hence making quality improvement as the highest priority in any institution, firm or business. Based on the fact that quality comes from integrated efforts of teams, employees and each level in an organization, total quality management was introduced and applied in all businesses as a means to enhance total quality by working on each level and stage in the service delivery or production. TQM in History It is vitally crucial before one dwells into the work offered by Taguchi to observe the timeline in which prominent gurus of quality management placed to build a scaffold on which TQM, Total Quality Management, was evolved. Figure 1: Table displaying the differences between new and concepts of quality Looking at Figure 1 above, it is illustrative that a major shift happened in the 1970’s in the concepts of quality. The old concept of quality meant solely inspection after production, where the new concept of quality involves a corrective and preventive approach...
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...1. (TCO B) Identify four categories of measures that might constitute a Balanced Scorecard of performance measures and provide an example of each. Also explain how a Balanced Scorecard could assist your organization. This answer must be in your own words—significant cut and paste from the text or other sources is not acceptable. (Points : 30) Some categories of measures of balance scorecard are: 1.-Measures Financial Performance Financial performance measures includes: Profitability such as ROI (return on investment), gross profit margin, asset turnover, etc Liquidity such as current ratio, quick ratio Financial performance measures, such as operating income and return on investment, indicate whether the company’s strategy and its implementation are increasing shareholder value. However, financial measures tend to be lagging indicators of the strategy. Firms monitor nonfinancial measures to understand whether they are building or destroying their capabilities—with customers, processes, employees, and systems—for future growth and profitability. Key nonfinancial measures are leading indicators of financial performance, in the sense that improvements in these indicators should lead to better financial performance in the future, while decreases in the nonfinancial indicators (such as customer satisfaction and loyalty, process quality, and employee motivation) generally predict decreased future financial performance 2.-Internal Operational Efficiency Time spent...
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...4) Explain any four (4) major factors that affect location decisions. COSTS We can divide location costs into two categories, tangible and intangible. Tangible costs are those costs that are already identifiable and precisely measured. For example, utilities, labor, material, taxes, depreciation, and other costs that the accounting department and management can identify, transportation of raw materials, transportation of finished goods and site construction. Intangible costs are less easily quantified. For example, quality of education, public transportation facilities, community attitudes toward the industry and the company, and quality and attitude of prospective employees and quality-of-life variables. PROXIMITY TO MARKETS For many firms, locating near customers is extremely important. Particularly, service organization find that proximity to market is the primary location factor. For example, drugstores, restaurants, post offices and barbers. Manufacturing firms find it useful to be close to customers when transporting finished goods is expensive or difficult, perhaps because they are bulky, heavy or fragile. For example, Mercedes, Honda, Toyota and Hyundai are building millions of cars each year in the U.S. With just-in-time production, suppliers want to locate near users. For example, Coca-Cola, whose product’s primary ingredient is water, it makes sense to have bottling plants in many cities rather than shipping heavy containers, which sometimes fragile glasses cross country...
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...MTBF and Power Supply Reliability Abstract: A general misconception is that Mean Time Between Failure (MTBF) is the same as the operational life of a product. In fact MTBF represents the statistical approximation of the percentage of units that will pass (or fail) during a products useful life period. MTBF should be considered as a measure of a product’s reliability, not product life. There are many factors that go into the determination of product reliability, such as grounding methods, electrical stresses, and temperature. Oftentimes there are even differences in the way the calculations are derived due to a manufacturer’s methodology and approach to reliability engineering. Product reliability speaks to the strength of the design and the commitment of the manufacturer. Therefore special care should be given to understanding all the key concepts of MTBF. In this way, one can accurately determine the best product and manufacturer for a given application. John Benatti Technical Support Engineer Astrodyne Corporation 508-964-6300 x 6330 jbenatti@astrodyne.com www.astrodyne.com 1 Introduction MTBF (Mean Time Between Failures) may be one of the more familiar terms seen in datasheets, yet there is still a widespread misunderstanding of the term and its application. Consequently, some designers place too much emphasis on this parameter, others very little, and some have trudged through too many disparate data sheets to deem it any use at all. The truth...
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...E13-8 E13-8 Here are comparative balance sheets for Taguchi Company. TAGUCHI COMPANY Comparative Balance Sheets December 31 TAGUCHI COMPANY Comparative Balance Sheets December 31 Assets Cash Accounts Reveibable Inventories Land Equipment Accumulated depreciation Total $ $ $ $ $ $ $ 2011 73,000.00 85,000.00 170,000.00 75,000.00 260,000.00 (66,000.00) 597,000.00 Liabilities and Stockholders’ Equity Accounts payable $ 39,000.00 Bonds payable $ 150,000.00 Common Stock ($1 par) $ 21,600.00 Retained Earnings $ 192,000.00 Total $ 597,000.00 Additional information: 1. Net income for 2011 was $103,000. 2. Cash dividends of $45,000 were declared and paid. 3. Bonds payable amounting to $50,000 were redeemed for cash $50,000. 4. Common stock was issued for $42,000 cash. 5. No equipment was sold during 2011, but land was sold at cost. InstructionsPrepare a statement of cash flows for 2011 using the indirect method Answers Taguchi Company Cash flows from operating activities Net income Depreciation expense Decrease in inventory Decrease in accounts payable Increase in accounts receivable Net cash provided by operating Activity Cash flows: investing Sale of land Purchase of equipment Net cash used by investing activity Cash flows: financing Issuance of common stock Payment of cash dividends Redemption of bonds Net cash used by financing activity Net increase in cash Cash at beginning of period Cash at end of period E13-8 HI COMPANY e Balance Sheets ember 31 $ $ $ $...
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...the JoAnn.com discount of 10% on two sewing machines, and the Offermatica graphic example? The author wants to illustrate the application of randomized test in company. Offermatica shows the way that Super Crunching often exploits technology to shorten the time between data collection, analysis and implementation and conduct multiple tests at once. It also emphasizes the power of testing multiple combinations that it lets companies be bolder. As a conclusion, the power of randomization is about marketing. The author mentions a method known as Taguchi. Google this term to get more insight on this and write a synopsis of this technique. Taguchi methods are statistical methods developed by Genichi Taguchi to improve the quality of manufactured goods, and more recently also applied to engineering, biotechnology, marketing and advertising. Professional statisticians have welcomed the goals and improvements brought about by Taguchi methods, particularly by Taguchi's development of designs for studying variation, but have criticized the inefficiency of some of Taguchi's proposals. Give your thoughts about the number of tests run by Captial One in 2006. Is it possible for one company to do this much testing? I think it’s possible. In fact ,Captial One has been running randomized tests for a long time. Way back in 1995, it ran an even larger experiment by generating a mailing list of 600,000...
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...China and Japan are in somewhat of a battle politically and economically. There are several issues that continue to fuel the fires between the two countries and government behavior on both sides is not helping matters. The documentary suggests economic rivalry, territorial disputes, and the Japanese bid for a seat on the United Nations Security Council are behind the tensions. However, a seemingly larger issue is how World War II is remembered; there are two versions of history and each wants their version to be known as truth. (Taguchi) The documentary explains that accounts of World War II have always been conflicting and a Japanese textbook downplaying their involvement has ignited the Chinese youth. The Chinese remember World War II as “a war against Japanese aggression” and by their accounts Japan is the perpetrator, not the victim. (Taguchi) The Rape of Nanjing, by Chinese accounts, was six weeks of Japanese brutality. The Japanese murdered hundreds of thousands of Chinese and villages of women were raped. According to Oi, some Japanese deny the Rape of Nanjing, while others downplay it and say “it was a battlefield and people were killed”. (Oi) The saying “the winner gets to write history” is certainly relevant in this situation. Japan, playing the innocent, chooses to whitewash their actions and attempt to write history as they see fit. Although the rest of the world is taught about the Rape of Nanjing and other horrific acts perpetrated by Japanese, it...
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...Theory? Inductive Reasoning v.s. Deductive Reasoning Leading Contributors to Quality Theory Dodge; Fisher; Shewhart; Deming; Crosby; Juran; Feigenbaum; Ishikawa; Taguchi; Conclusion Quality Management Evolution Lean Six-Sigma Evolution; Holistic Views of Quality Evolution Viewing Quality Theory from a Contingency Perspective Quality Theory Implementation Depends on ambient Environment 2 Understanding Quality Concepts 3/1/2014 Quality Theory Defining Theory Inductive Reasoning v.s. Deductive Reasoning 3 Understanding Quality Concepts 3/1/2014 Defining Theory A coherent group of general propositions used as principles of explanation for a class of phenomena. An example for quality theory Quality Improvement Worker Morale Proposition Explain Phenomena 4 Understanding Quality Concepts 3/1/2014 Induction v.s Deduction Induction Collect data and then find out general phenomena (Chs. 2 and 10) Deduction State hypotheses and assume models, and then collect data to support the statements. (Chs. 11-12) 5 Understanding Quality Concepts 3/1/2014 Leading Contributors to Quality Theory Dodge: AS Fisher: DOE Shehwart: Control Chart Deming: Application Crosby Juran Feigenbaum Ishikawa Taguchi 6 Understanding Quality Concepts 3/1/2014 Harold F. Dodge (1893-1976) Developed Acceptance Sampling (AS) methodologies in 1928 A form of inspection applied to lots...
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...Joseph Juran Joseph Moses Juran (December 24, 1904 – February 28, 2008) was a Romanian-born American management consultant and engineer. Dr. Joseph Juran is considered to have had the greatest impact on quality management after W. Edwards Deming. He is principally remembered as an evangelist for quality and quality management, having written several influential books on those subjects including the Quality Control Handbook and Managerial Breakthrough. In 1941, after discovering the Pareto principle by Vilfredo Pareto, he began to apply it to quality issues. In later years, Juran preferred "the vital few and the useful many" to signal the remaining 80% of the causes should not be totally ignored. Although his philosophy is similar to Deming’s, there are some differences. Whereas Deming stressed the need for an organizational “transformation,” Juran believes that implementing quality initiatives should not require such a dramatic change and that quality management should be embedded in the organization. One of his important contributions is his focus on the definition of quality and the cost of quality and poor quality. He extended his quality management to encompass nonmanufacturing processes, especially those that might be thought of as service related. Juran is credited with defining quality as fitness for use rather than simply conformance to specifications. Juran was one of the first to think about the cost of poor quality. This was illustrated by his "Juran trilogy"...
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...Question 2 | | Here are comparative balance sheets for Taguchi Company. | TAGUCHI COMPANY | Comparative Balance Sheets | ------------------------------------------------- December 31 | Assets | ------------------------------------------------- 2011 | | ------------------------------------------------- 2010 | Cash | $73,000 | | $22,000 | Accounts receivable | 85,000 | | 76,000 | Inventories | 170,000 | | 189,000 | Land | 75,000 | | 100,000 | Equipment | 260,000 | | 200,000 | Accumulated depreciation | ------------------------------------------------- (66,000) | | ------------------------------------------------- (32,000) | Total | ------------------------------------------------- $597,000 | | ------------------------------------------------- $555,000 | | | | | Liabilities and Stockholders' Equity | | | Accounts payable | $39,000 | | $47,000 | Bonds payable | 150,000 | | 200,000 | Common stock ($1 par) | 216,000 | | 174,000 | Retained earnings | ------------------------------------------------- 192,000 | | ------------------------------------------------- 134,000 | Total | ------------------------------------------------- $597,000 | | ------------------------------------------------- $555,000 | Additional information: 1. Net income for 2011 was $103,000. 2. Cash dividends of $45,000 were declared and paid. 3. Bonds payable amounting to $50,000 were redeemed for cash $50,000. ...
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