Robust Design Methodology And Its Applications

1. Six Sigma is a management philosophy that sets objectives, collects data and analyzes results as a way to remove wasted expenses from its processes and help reduce the number of defective products produced. Six Sigma uses quality measures to strive for near perfection by eliminating errors and variables.

To achieve Six Sigma Quality, a process must produce no more that 3.4 defects per

Six Sigma simply means a measure of quality that strives for near perfection. Six Sigma is a disciplined, data-driven approach and methodology for eliminating defects in any process. In another meaning Six Sigma is a highly disciplined process that helps us focus on developing and delivering near-perfect products and services.

“The term Six Sigma was coined by Bill Smith in 1986, while at Motorola. It was coined as a target for defect-free product manufacturing. The term was derived from the idea that process capability can be described by product or service deviation from specification.” (“Six Sigma Basics”). Although this theory turned in to what we now know as Six Sigma, the origins of statistical process control can be traced to Walther Shewart and Edward Deming.

Sigma is the standard deviation (reasonable, institutionalized figure from the mean acknowledgment level), and when the deliberate number of deviations past the mean resilience breaking point is six, you are scarcely creating quality items. Basically, this implies that in the event that you discovered six imperfections in your items, you are near to low quality creation. Regardless of its exploratory methodology towards quality change, there are reactions against Six Sigma. The most vocal one is the perspective that there is nothing but the same old thing new around Six Sigma as it impersonates effectively existing and demonstrated strategies. To a certain degree, this contention has some validity. In any case, advocates of Six Sigma accept that the length of 6 sigma accomplishes more unsurprising results with far lower exertion; there is no damage in tolerating and actualizing it. Reactions in any case, what Six Sigma does is apply deliberate endeavors at using existing strategies with new methodologies Information Retrieved from:

Six Sigma is a business metrics that seeks to identify and eliminate causes of errors or defects as well as failures in business processes by focusing on output that are critical to customers (De Feo, Barnard 2004). It is also a measure of quality that strives to eliminate defects using the application of statistical methods. In this case, a defect is defined as anything that could lead to customer dissatisfaction. Six Sigma’s statistical quality control is the method used to measure variability in a product for evaluation and corrective actions. When the product metrics exceeds the bounds of acceptability, based on statistical inference, the product can be rejected with reasonable assurance that does not meet requirement. It aims to identify and eliminate waste in order to increase speed and flow from start to finish. It also identifies the critical steps, and deleting those not required or nonessential. There are so many metrics process in today’s business industries but the metrics that Six Sigma’s statistical thinking can also be defined as a thought process. In which it recognize the variation is all around us and present in everything we do. The Six Sigma’s interconnected processes and identifying, characterizing, quantifying, controlling and reducing variation provide opportunities for improvement within any organizations or firms. That is to say,

Six Sigma is a quality improvement philosophy and a methodology and collection of statistical techniques used to implement that philosophy. Six Sigma’s focuses on reducing or removing identifiable sources of changes in order to decrease the number of defects in a product. Six Sigma was developed by Bill Smith and was used to standardize the way in which defects are tallied (Meredith, 2013). As a new way of doing business, six sigma can have a significant impact on the end result of business. There are many way six sigma can be applied. For example, the scientific component of methodology is a structure approach that takes

Six Sigma was first introduced in the 1980’s by none other than Motorola. It was not however necessarily a novel concept at the time so much as it drew from a conglomerate of proven manufacturing principles. It is strikingly similar to the scientific method in design. Six Sigma approaches areas that may not necessarily be viewed as problematic with an open mind. It seeks to analyze problems or questions with a stepwise, statistical, and quantitative focus in order to discover, fix, or disprove problems that may or may not exist within a process. By doing this Six Sigma can improve efficiency and therefore improve positive outcomes for whatever the endpoint may be (Mast, Bisgaard, & others, 2007).

Six Sigma aims to establish the causes of errors, measures those errors, and assess them so that they can be minimized. It has five types of examination that aids to solve problems when utilized. These analysis steps include define, measure, analyze, improve and control. The sigma letter is a character that is occasionally used by statisticians to define the variability of any method, particularly the extent of uncertainty with the outcome. There is a big evidence of proof that the use of this process might lead to an enormous minimization of errors in manufacturing, healthcare or any service that is related to the customer. Moreover, the bigger the sigma the fewer the errors permitted. The goal of sigma converts into a maximum of 3.4 defects per every million opportunities, methods, events, proving that it can be used to solve any problem that any product or service fails to meet client’s needs and requirements (Arthur, 2011).

A design process is more experimental rather than technical, the insights that are reflected in the journey of design or research leads to transformations in the behavior of the practitioner. The possibility of outcome can be influenced either in positive or negative ways as it generally develops from the current issues in the society. This affects the whole process and choices a designer make, it can be related in terms of cultural, economical, global, political or environmental issues they can be considered as the contemporary influence.

A linear actuator (propriety part) controls the airbrake actuation to the required angle, and the assembly must withstand the stated aerodynamic loading.

The concept of Six Sigma was developed in the early 1980’s at Motorola Corporation (Harry and Schroeder, 2000). Six Sigma can be defined as a statistical measure of the performance of a process or product (Kumi et. al., 2006). It is used as a quality control mechanism, which seeks to reduce defects or variations in a process to 3.4 per million opportunities thereby optimizing output and increasing customer satisfaction (Sambhe, 2012). Sigma is representing the standard deviation, a unit of measurement that designates the distribution or spread about the mean of a process (Six Sigma Academy, 2002). In addition, the Six Sigma uniquely driven by close understanding of customer needs, disciplined use of fact, data, and statistical analysis, and diligent attention to managing improving, and reinventing business processes (Pande, P., et. al. 2000). The Six Sigma methodology uses statistical tools to identify the factors that matter most for improving the quality of processes and generating bottom-line results. The Six Sigma DMAIC (Define, Measure,

Many Greek symbols are used for statistical representations including σ, pronounced and written as sigma. This symbol refers to a standard deviation from the mean in statistics, and it is often used in quality specification measurements. Thus, six sigma (6σ) refers to six standard deviations from the mean. Literally speaking, six sigma is a statistical measure of variability. However, in the context of quality and process improvement, six sigma refers to a statistical- and factual-based approach to quality and process improvement. In fact, “some argue that Six Sigma is an advanced quality improvement

The word is a factual term that measures how far a given procedure goes astray from flawlessness. Six Sigma is named after the procedure that has six standard deviations on every side of the detail window. It is a trained, information driven methodology and technique for taking out imperfections. The focal thought behind Six Sigma is that on the off chance that you can quantify what number of "imperfections" you have in a procedure, you can methodicallly make sense of how to dispense with them and get as near to "zero deformities" as would be prudent.

Six Sigma method is used to measure variation and defects in quality. Current competitive environment needs the qualitative product. Each feature of product including packaging should have quality to sustain in the market. So, the producers give consistent importance to quality control. The Six Sigma is very useful tool to find defects and its statistics. Six Sigma method has the goal of 3.4 defects per million parts. Six Sigma leads to world-class quality of the product. Six Sigma uses DMAIC tool and SIPOC for various analysis. Quality management program was firstly used by Motorola Inc. It describes quality measurement. Six Sigma is structured data driven method, which is using for quality improvement and eliminating waste.