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Magic of Reliability

Magic of Reliability

Most senior managements don’t know that Reliability can get them high profits very quickly. And therefore high return on investment. Hyundai’s Ten Year Warranty. Their market share was going downhill for over ten years, suddenly it started to go upwards instead. All because of high reliability!

The impact of reliability extends far beyond reliability itself. It establishes the cost of warrants, repair, maintenance, logistics and the indirect costs of unavailability, downtime, and the COST OF SAFETY RECALLS which runs to hundreds of million dollars., and throughout the life of the product. This paper presents an outside-the-box view of how to get the best results by aiming at twice the life in the product specification and by preventing the high-risk failure modes resulting in an extraordinary return on investment, as much as 10,000%. [Read more…]

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MSA 4 – Gage Linearity

MSA 4 – Gage Linearity

Introduction

The prior article, MSA 3: Gage Bias, focused on defining and calculating a point estimate of gage bias. A method was presented to determine if the bias was statistically significant. If significant, the bias would be applied to the data as a correction factor.

This article discusses gage bias linearity over a measurement range.

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Death of a Reliability Engineer

Death of a Reliability Engineer

(Reproduced from the article “Death of a Reliability Engineer” by Dev Raheja, Reliability Review, Vol. 30, March 2010 with permission)

When I first wrote the article in March 1990, I implied an ‘F’ grade to reliability engineers. Now almost 20 years later, I would give them a “E’. Yes, there is a little improvement but nothing you can write to your mother about.

The MTBF cancer was wide spread and is still wide spread in the DoD. The only reason I upgraded the reliability engineer from F to E is because the MTBF in some industries is no longer used such as in the automotive industry. They use the failure rates instead to hide their shame.

Failure rate is just the reciprocal of MTBF. Good job! Same old corn flakes with a new product name! [Read more…]

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Discussing the Controversial Subject of FMEA Prepopulation

Discussing the Controversial Subject of FMEA Prepopulation

To Prepopulate or not to prepopulate, that is the question

By prepopulating the highest priority functions, along with other selected information, the FMEA team can focus their efforts on the most important functions, and minimize in-meeting time. This is the last step in FMEA preparation. However, there are specific limitations to FMEA prepopulation that must be understood and adhered to.

“Give me six hours to chop down a tree and I will spend the first four sharpening the axe.”
Abraham Lincoln

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MSA 3 – Gage Bias

MSA 3 – Gage Bias

Introduction

In my prior article, Measurement Systems, the total variation in the measurement data was partitioned into part variation (PV), assessor variation (AV), and equipment variation (EV). GR&R is the square root of the sum of the squares of AV and EV. If the ratio of GRR/TV is less than 10%, then the measurement system variation was acceptable.

In addition to variation, data bias needs to be considered. This bias is created by systematic measurement errors.
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QFD

QFD

The QFD concept is widely known, yet appears to be used infrequently. Too time consuming for the value, but it is a “good idea.” There are several schools of thought, and certainly practical approaches for implementation that can provide needed business solutions. This video introduces the topic. If you want help with implementation, or with training – contact us to obtain the break throughs available. [Read more…]

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Robust Design with Monte Carlo Analysis

Robust Design with Monte Carlo Analysis

When an objective requires a tool to be used, that is idea. Certain projects can greatly benefit from use of Monte Carlo analysis. This in depth knowledge can create solutions where it is not readily apparent. If you are considering going this far, we can help you decide if the value is worthwhile. And we can help you apply it in a simple yet powerful way. [Read more…]