CRE Preparation Blog

A WordPress blog focused on aiding those preparing for the ASQ Certified Reliability Engineer exam. The following excepts are from the most recent blog entries. To see the full list of posts, please visit https://accendoreliability.com/creprep/, or click on one of the excepts below.

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  • 8 New Topics in the ASQ CRE Body of Knowledge
    A Review of the New Topics in the 2018 ASQ CRE Body of Knowledge Last week we reviewed the 10+ topics removed from the CRE body of knowledge (BoK). This week, let’s look at the additions. Three of the …
  • 10+ Dropped Items from the ASQ CRE Body of Knowledge
    A Review of the 2018 ASQ CRE Body of Knowledge: Dropped Topics and Concepts Just noticed the new 2018 ASQ CRE Body of Knowledge has posted on the ASQ site. The new BoK will be in effect for CRE exams …
  • The Eyring Model
    The Eyring Model for Accelerated Testing Sometimes the reaction rate of a process relies on two stresses. For chemical reactions temperature seems to influence the rate of the reaction. Yet, other str …
  • Waterfall Test Planning
    A Waterfall Test Planning Approach to Product Reliability Environmental Testing I may have the name, waterfall, used incorrectly here. Years ago I learned from a former Apple reliability group manager …
  • ALT Allocation of Test Units
    4:2:1 Allocation of Test Units One question that you should consider when planning a multiple stress accelerate life test (ALT) is the allocation of test units to the various stresses. We want to crea …
  • Electromigration Accelerated Life Testing
    Black’s Equation for Electromigration Accelerated Life Testing Black’s equation for estimating the time to failure due to electro migration is a classic. James Black explored and wrote about electromi …
  • Metal Fatigue Failure Mechanism Accelerated Life Testing
    Metal Fatigue Failure Mechanism Accelerated Life Testing Metal is a wonderful, strong, material. Yet under certain types of stresses metal can fail One in particular is fatigue due to cyclic motion. M …
  • Temperature & Humidity Accelerated Life Testing
    Peck’s Relationship for Temperature & Humidity Testing High temperature & humidity is a common test condition. For specific failure mechanisms there are models available (or you can create a m …
  • Time Compression Accelerated Life Testing
    Time Compression ALT – The Easy One The easiest ALT is one that you operate an item more often then operated by the customer. Removing spans of time the item is not being bent, moved, heated, etc allo …
  • 4 Different Types of Reliability Testing
    Getting the Right Information from Your Reliability Testing You cannot test in reliability any more than you can test in quality. Often reliability testing is done though, and knowing the range of tes …
  • 4 Steps to Accomplish HALT
    HALT in 4 Not Always Easy Steps Highly Accelerated Life Testing, HALT, is a method to discover the weaknesses in a design. Using a step stress approach of single and combined stresses, you can quickly …
  • Taguchi Design of Experiments Approach
    Taguchi Design of Experiments Approach Dr. Taguchi was an engineer, not a statistician. He considered the ability of design of experiments (DOE) to identify and reduce sources of variability, yet need …
  • Taguchi’s 3 Fundamental Concepts
    Taguchi’s 3 Fundamental Concepts Taguchi may be best known for the variation of design of experiments that bear his name. Yet the impact of his work is felt across the product life cycle and all of th …
  • You Are a Reliability Leader, Now Make a Difference
    Reliability Engineering Leadership Role Leadership is not a position or title within an organization. It is an attitude. You’ve seen the internet meme’s about the difference between leadership and man …
  • Introduction to the Quality Triangle
    The Quality Triangle of Priorities and Balance Have you ever worked on a project with no deadlines, unlimited resources, and boundless scope? Probably not. You may have worked under the guidelines of …
  • Using Reliability Goals to Set Requirements
    Using Reliability Goals to Set Requirements Customers of your product would like the particular one they have to work. To work over time. If a product meets the customer’s expectation by working as lo …
  • Uncertainty and Risk Management
    Uncertainty and Risk Management We are rather good at being surprised when setting expectations for the future. This is the essence of risk. The difference between what we expect to occur or would lik …
  • The Connection of Reliability and Customer Expectations
    Customers Experience Product Reliability in Real Time In a customer’s mind, the product works or it doesn’t. If it doesn’t work as expected it has failed. This may or may not be a reliability problem. …
  • Performing the Right Correcting Action
    Performing the Right Corrective Action When something doesn’t work as expected, it is a failure. A common response to a failure by an organization is to restore the system or remedy the situation. Eac …
  • Overview of System Reliability Modeling
    Building and Using a Reliability Model From the simplest to the most complex system, building and using a reliability model permits the entire team to make better decisions. Understanding and monitori …

Course offerings

If you or your team would like a custom CRE prep course, just let me know and we’ll make arrangements to make it happen. I also teach a live 32 hour CRE Preparation course through the

ASQ Silicon Valley Section when we have at least four students. The course runs for the 8 weeks prior to semi annual exam. Learn more about the CRE at the ASQ site.