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Home » Articles » on Tools & Techniques

on Tools & Techniques

A listing in reverse chronological order of articles by:



  • Dennis Craggs — Big Data Analytics series

  • Perry Parendo — Experimental Design for NPD series

  • Dev Raheja — Innovative Thinking in Reliability and Durability series

  • Oleg Ivanov — Inside and Beyond HALT series

  • Carl Carlson — Inside FMEA series

  • Steven Wachs — Integral Concepts series

  • Shane Turcott — Learning from Failures series

  • Larry George — Progress in Field Reliability? series

  • Gabor Szabo — R for Engineering series

  • Matthew Reid — Reliability Engineering Using Python series

  • Kevin Stewart — Reliability Reflections series

  • Anne Meixner — Testing 1 2 3 series

  • Ray Harkins — The Manufacturing Academy series

by Larry George Leave a Comment

Proportional Hazard Reliability Deterioration? 

Proportional Hazard Reliability Deterioration? 

Broom” charts are reliability function estimates from different or successive production cohorts. Their differences may contain actionable information. How to quantify and use that information? This article provides an alternative to traditional Duane, AMSAA, and Crow reliability growth models, based on Cox’ proportional hazards model for test or field reliability data. This article provides:

  • Broom charts that show reliability growth or deterioration
  • Reliability growth references, including credit to my UC Berkeley professors
  • Proportional hazards (PH) model(s) of reliability growth with vs. without lifetime data
  • Suggestions for what to do about reliability deterioration

Suppose successive test samples or production cohorts have reliability growth or deterioration, caused by TAAF (Test, Analyze And Fix), configuration, environment, stress, or vendor changes, or ??? Suppose product cohorts have “proportional hazard” functions. 

[Read more…]

Filed Under: Articles, on Tools & Techniques, Progress in Field Reliability?

by Carl S. Carlson Leave a Comment

FMEA Quality Objective 14: TIME USAGE

FMEA Quality Objective 14: TIME USAGE

Time is the scarcest resource, and unless it is managed, nothing else can be managed. Peter Drucker

Achieving high-quality FMEAs requires support from the right FMEA team. Getting the team to show up and participate to the fullest extent is critical to success.

[Read more…]

Filed Under: Articles, Inside FMEA Tagged With: FMEA Quality Objectives

by Ray Harkins Leave a Comment

Availability: Can the Equipment Run When Scheduled?

Availability: Can the Equipment Run When Scheduled?

My new book titled Measuring Manufacturing Effectiveness develops a practical framework for understanding manufacturing effectiveness through the lens of performance metrics including how they are defined, how they are interpreted, and how they influence real operational behavior.

Chapter 5 turns attention to the first of the three components of Overall Equipment Effectiveness (OEE): Availability.

Availability addresses a deceptively simple question: Can the equipment run when it is scheduled to run?
Behind that question sits a wide range of losses related to downtime, changeovers, failures, maintenance practices, and scheduling decisions.

[Read more…]

Filed Under: Articles, on Tools & Techniques, The Manufacturing Academy

by Ray Harkins Leave a Comment

Orientation to the OEE Components

Orientation to the OEE Components

This article is adapted from Chapter 4 of my book, Measuring Manufacturing Effectiveness.

The book is organized as a structured, multi-chapter examination of how manufacturing organizations define, measure, and interpret “effectiveness.” Rather than focusing on isolated metrics or individual tools, it treats measurement as a system, one that directly influences operational decisions, improvement priorities, and management behavior across manufacturing organizations.

Each chapter is written to stand on its own, while also contributing to a larger, integrated framework for understanding manufacturing performance.

Chapter 4 introduces the core components that make up Overall Equipment Effectiveness (OEE). While OEE is often presented as a single number, it is actually the product of three distinct elements, each representing a different category of loss and a different dimension of system performance.

This chapter provides an orientation to those components, explains what each is intended to capture, and establishes the conceptual foundation needed before OEE can be used meaningfully as a measurement or improvement tool.

[Read more…]

Filed Under: Articles, on Tools & Techniques, The Manufacturing Academy

by Carl S. Carlson Leave a Comment

FMEA Quality Objective 13: LINKAGE

None of us is a smart as all of us. – Ken Blanchard

FMEAs have great potential value to improve product designs and manufacturing processes. That value increases significantly when FMEA is properly linked and connected to other analyses.

How can FMEA be linked to other analyses to increase value?

1. Design FMEA can be linked to Process FMEA.

  • Causes in the DFMEA become inputs to identification of failure modes in the PFMEA.
  • Effects in the DFMEA become inputs to identification of product-related effects in the PFMEA.
  • DFMEA can recommend Special Product Characteristics that are input to PFMEA.
  • Product designs must be able to be manufactured and assembled, and this can be supported by the DFMEA team considering design improvements that help ensure the design can easily be manufactured without failures.

[Read more…]

Filed Under: Articles, Inside FMEA Tagged With: FMEA Quality Objectives

by Ray Harkins Leave a Comment

Defining TEEP, OOE, and OEE

Defining TEEP, OOE, and OEE

This article is adapted from Chapter 3 of my book titled Measuring Manufacturing Effectiveness.

The book is organized as a structured, multi-chapter exploration of how manufacturing organizations define, measure, and interpret “effectiveness.” Rather than focusing on isolated metrics or tools, it examines measurement as a system; one that shapes decisions, priorities, and behavior across operations, quality, reliability, and management.

Each chapter is written to stand on its own, while also contributing to a larger, integrated framework for understanding manufacturing performance.

Chapter 3 focuses on three of the most commonly used, and most frequently misunderstood, manufacturing effectiveness metrics:

  • Total Effective Equipment Performance (TEEP)
  • Overall Operations Effectiveness (OOE)
  • Overall Equipment Effectiveness (OEE)

Although these measures are often treated as variations of the same idea, they differ in important and meaningful ways. This chapter clarifies what each metric is designed to measure, the assumptions embedded in each definition, and the types of questions each metric is and is not capable of answering.

[Read more…]

Filed Under: Articles, on Tools & Techniques, The Manufacturing Academy

by Michael Keer Leave a Comment

Hardware Product Realization in the Age of AI

Hardware Product Realization in the Age of AI

Chapter 7: Preparing for Agile Hardware Implementation Part 1, Ten things to look out for.

In the previous chapter, we discussed how to prepare your organization to have the strong foundational principles needed to fully utilize agile hardware product development.

This chapter sets you on the path towards being ready for agile hardware product development.

As we mentioned in the previous two episodes, hardware companies need to establish strong foundational principles before applying the best practices of agile hardware product realization. These best practices will be covered in a later episode, but before getting to them, it is worth considering the following set of warning signs to look out for in your current processes and methodologies. Comprehending these as they relate to your current working practices will help you to focus on those elements which can negatively impact your hardware developments.

[Read more…]

Filed Under: AI, Articles, on Product Reliability, on Tools & Techniques, The Hardware Product Develoment Lifecycle

by Ray Harkins Leave a Comment

Manufacturing Time as a System

Manufacturing Time as a System

Measuring Manufacturing Effectiveness – Chapter 2: Manufacturing Time as a System

Over the past several years, I’ve been discovering a structured framework for understanding and improving how manufacturing organizations define, measure, and interpret “effectiveness.”

Not efficiency. Not productivity in isolation. Not isolated KPIs. But manufacturing effectiveness as a system that integrates operations, quality, reliability, capacity, flow, decision-making, and management behavior into a coherent measurement model. It may sound like a lofty goal. But please stay with me.

This article is drawn from Chapter 2 of my book, Measuring Manufacturing Effectiveness, which focuses on understanding time as a resource that is systematically reduced by cumulative and irreversible losses, at the end of which remains the time needed to manufacture good parts.

[Read more…]

Filed Under: Articles, on Tools & Techniques, The Manufacturing Academy

by Michael Keer Leave a Comment

Hardware Product Realization in the Age of AI

Hardware Product Realization in the Age of AI

Chapter 6: Applying Agile Hardware Techniques, Changing the Normalized “Old Ways” Part 2

In the previous chapter the first part of a practical look at how to apply agile methodologies to your hardware development process was explored.

This chapter completes a look at how to apply agile methodologies to your hardware development process.

As illustrated in the diagram at the beginning of this blog, companies that follow an agile hardware product realization process plan to invest more resources early in the process and, as a result, are able to realize extra profits over the product’s lifecycle. Compare the two lines showing the investment and profit profile of a standard (old ways) development process (from the diagram shown in the previous blog post) with that of those organizations who invest strategically early in the process.

[Read more…]

Filed Under: AI, Articles, on Product Reliability, on Tools & Techniques, The Hardware Product Develoment Lifecycle

by Michael Keer Leave a Comment

Hardware Product Realization in the Age of AI

Hardware Product Realization in the Age of AI

Chapter 5: Applying Agile Hardware Techniques and Changing the Normalized “Old Ways”

In the previous chapter the differences between agile Hardware and Agile Software were explored. This chapter explores the first part of a practical look at how to apply agile methodologies to your hardware development process.

First let’s examine the impact of following the “old ways” that have become normalized as part of the everyday hardware development processes:

Developing any hardware-based product requires careful planning, management, design, and testing before it can be manufactured and shipped to customers. This has resulted in the traditional “waterfall” development model, where work is done in a series of serial activities, with review and approval requirements before moving along the development path.

[Read more…]

Filed Under: AI, Articles, on Product Reliability, on Tools & Techniques, The Hardware Product Develoment Lifecycle

by Hemant Urdhwareshe Leave a Comment

Process Capability Analysis using JASP

Process Capability Analysis using JASP

Dear friends, I am happy to share this video to illustrate how to use JASP, the free open source statistical software to perform process capability analysis. I recommend to watch the following related videos before watching this video:

[Read more…]

Filed Under: Articles, Institute of Quality & Reliability, on Tools & Techniques

by Carl S. Carlson Leave a Comment

FMEA Quality Objective 12: TIMING

“Innovation has a lot to do with timing.” — Steve Jobs

When FMEAs are done is just as important as how they are done. In this article, I’ll share evaluation criteria for the FMEA Quality Objective regarding timing.

In FMEAs, what is meant by timing?

FMEAs need to be completed through Recommended Actions, Actions Taken, and risk reduced to an acceptable level by certain dates. Meeting the timing objectives of FMEAs means they were started and completed by the required dates. [Read more…]

Filed Under: Articles, Inside FMEA, on Tools & Techniques Tagged With: FMEA Quality Objectives

by Ray Harkins 1 Comment

Environmental Stress Screening

Environmental Stress Screening

Finding Weaknesses Before the Customer Does

Co-authored with Mike Vella

One of the most effective analytical tools in reliability and quality engineering is Environmental Stress Screening (ESS).

ESS is a process designed to force latent defects to reveal themselves. It does this by applying controlled environmental stresses to hardware, accelerating the transition from hidden weakness to detectable failure.

The goal is not to test whether a product meets specifications. The goal is to flush out defects that already exist but have not yet developed into failures under normal conditions.

[Read more…]

Filed Under: Articles, on Tools & Techniques, The Manufacturing Academy

by Michael Keer Leave a Comment

Hardware Product Realization in the Age of AI

Hardware Product Realization in the Age of AI

Chapter 4: Difference between Agile Hardware and Agile Software

In the previous chapter, how markets and global needs can impact your product was discussed.

In this chapter the differences between agile Hardware and Agile Software are explored to allow you understand how to apply agile techniques to a hardware development workflow.

The desire to gain a competitive advantage by releasing products faster has driven the widespread adoption of agile software methodologies. More recently, a push to apply agile techniques into the hardware development process has yielded mixed results, This is because electronic hardware products cannot be tested until complete subassemblies are built, and so important modifications to the product realization process are necessary.

[Read more…]

Filed Under: AI, Articles, The Hardware Product Develoment Lifecycle

by Larry George Leave a Comment

The Field Reliability Applications Award

The Field Reliability Applications Award

From ASQ Reliability Review, Vol. 16, No. 3, Oct. 1996. Revised 2002, 2018, and Jan. 4, 2026.

The Apple Computer Reliability Department manager, Wayne Smith, told me (circa 1991), “We make sure Apple doesn’t sell a product that doesn’t work,” (by in-house product tests during design phase). (I worked in Apple’s Service Department.) Testing helps, but real, age-specific reliability is determined in the field, in the hands of customers, in their environments. Companies could benefit from using age-specific, field reliability to eliminate waste, improve customer satisfaction, and reduce uncertainty. The Field Reliability Applications Award is a clone of the Malcolm Baldrige National Quality Award modified to quantify reliability maturity. The field reliability applications evaluation in this article supplements Fred’s podcast on “Reliability Maturity” [Schenkelberg].

[Read more…]

Filed Under: Articles, on Tools & Techniques, Progress in Field Reliability?

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