All Features
Jody Muelaner
In a general sense, capability is the ability to do something. Within manufacturing, capability is given a much more specific definition. It is an expression of the accuracy of a process or equipment, in proportion to the required accuracy.
This can be applied to production processes, in which…
Rohit Mathur
Whatever the process or type of data collected, all data display variation. This is also true in software development. Any measure or parameter of interest to our business will vary from time period to time period, e.g., number of incidents per week or month, time taken in resolving incidents,…
Scott A. Hindle
In everyday language, “in control” and “under control” are synonymous with “in specification.” Requirements have been met. Things are OK. No trouble.
“Out of control,” on the other hand, is synonymous with “out of specification.” Requirements have not been met. Things are not OK. Trouble.
Using…
Brian Lagas
‘Why are our changeovers taking so long?”
If you’ve asked this question on the shop floor, more than likely you were met with blank stares by your employees. Open-ended questions like this are overwhelming, so employees try to find quick answers that don’t really address the problem. They don’t…
Chad Kymal, Gregory F. Gruska
During the early 1980s, GM, Ford, and Chrysler established the Automotive Industry Action Group (AIAG), a not-for-profit organization with the mission “To improve its members’ competitiveness through a cooperative effort of North American vehicle manufacturers and their suppliers.” In the late…
Harish Jose
I must confess up front that the title of this column is misleading. Similar to the Spoon Boy in the movie, The Matrix, I will say, “There is no lean problem or a Six Sigma problem. All these problems are our mental constructs of a perceived phenomenon.”
A problem statement is a model of the…
Ryan E. Day
Current business conversation often focuses on data and big data. Data are the raw information from which statistics are created and provide an interpretation and summary of data. Statistics make it possible to analyze real-world business problems and measure key performance indicators that enable…
Nicola Olivetti
According to a report by PwC, industrial sectors worldwide plan to invest $900 billion in Industry 4.0 each year. Despite these growing technology investments, only a few technologies are significantly mature to drive measurable quality impacts. Digital visual management (DVM) is one of them, being…
Shobhendu Prabhakar
Someone recently asked me why quality failures and safety incidents continue to occur despite organizations communicating their quality and safety visions to the workforce, developing and implementing quality and safety management systems, and campaigning day in and day out about quality and safety…
Harish Jose
Today I’m looking at Factory Physics and the Toyota Production System (TPS). My main references for the post are the 1977 paper co-authored by ex-Toyota president Fujio Cho and key ideas from Factory Physics (Waveland Press, 2011).
One of my favorite definitions of lean comes from Wallace J. Hopp…
Doug Devereaux
Artificial intelligence (AI) is widely acknowledged as a crucial aspect of what is broadly referred to as Industry 4.0. Although no one knows yet how AI will be incorporated into the next phase of the Industrial Revolution, most agree that it will allow greater connectivity between people, machines…
Shobhendu Prabhakar
Historically, conventional wisdom among business managers was that the higher the quality, the higher the cost. This perception still holds true today among a few business managers. Common sense also tells us the same thing, i.e., to create higher quality products or services, organizations will…
Harish Jose
Today I’m looking at the profound phrase of Canadian philosopher and a media theorist Marshall McLuhan, “The medium is the message.”
McLuhan noted that: “Each medium, independent of the content it mediates, has its own intrinsic effects, which are its unique message.... The message of any medium…
Scott A. Hindle
‘Process Capability: What It Is and How It Helps,” parts one, two, three, and four, discussed Alan’s development in the field of process capability1 He’d learned about the mistakes that can be made and how to avoid them in practice to become better at his job. Alan had since passed on his learning…
Shobhendu Prabhakar
Why do we waste our time and effort completing checklist after checklist for tasks that we can complete even when half awake? Do we not have better things to do than complete checklists?
Good question! And the answer is simple: If there is a checklist, it exists for a reason, and we need to follow…
Harish Jose
One of my favorite things to do when I learn new and interesting information is to apply it to a different area to see if I can gain further insight. Here, I am looking at the principle, “Chekhov’s gun,” named after the famous Russian author, Anton Chekhov (1860–1904), and how it relates to gemba…
Dirk Dusharme @ Quality Digest
We tied up last year in a neat little bow, talking about how stories define ourselves and our work; waste is waste, no matter your political leanings; and putting numbers from the news in context.
“The Gift of Being Small” This article by Quality Digest’s Taran March wonderfully illustrates how we…
Anthony D. Burns, Michael McLean
The control chart is at the heart of the very definition of quality. It is central to building, maintaining, and predicting quality into the future. However, control charts today, more often than not, are misused and misunderstood. The aim of this article is to show not only how control charts are…
Anthony Chirico
Everybody wants to design and conduct a great experiment! To find enlightenment by the discovery of the big red X and perhaps a few smaller pink x’s along the way. Thoughtful selection of the best experiment factors, the right levels, the most efficient design, the best plan for randomization, and…
Jody Muelaner
In this article I will show that the conventional method for calculating uncertainty is not always reliable. In fact, it is generally only exact when the measurement can be represented by a simple linear equation and the input uncertainties are all normally distributed. Whenever the measurement is…
Scott A. Hindle
Walter Shewhart, father of statistical process control and creator of the control chart, put a premium on the time order sequence of data. Since many statistics and graphs are unaffected by this, you might wonder what the fuss is about. Read on to see why.
Figure 1 shows a series of measurements…
Eric Stoop
The frequently referenced learning pyramid asserts than an average student retains 75 percent of information learned through practice, compared to just 5 percent of what he hears in a lecture. Although experts may dispute the relevance of these figures when applied to modern society, all of us can…
Minitab LLC
Process validation is vital to the success of companies that manufacture pharmaceutical drugs, vaccines, test kits, and a variety of other biological products for people and animals. According to FDA guidelines, process validation is “the collection and evaluation of data, from the process design…
Anthony Chirico
Perhaps the reader recognizes d2 as slang for “designated driver,” but quality professionals will recognize it as a control chart constant used to estimate short-term variation of a process. The basic formula shown below is widely used in control charting for estimating the short-term variation…
Dirk Dusharme @ Quality Digest
In this episode we look at a history of quality, how you serve your customer in the housing industry, and what makes a good review.
“Young couples ‘trapped in car dependency’”
Building entry-level housing along highways may give couples the chance to buy a home, but at what cost to them and the…
