Dianna Deeney, Author at Quality During Design

Prevention Controls vs. Detection Controls

Dianna compares different types of controls in product development and design engineering: Prevention Controls vs. Detection Controls. She reviews concepts, uses for controls, risk-based controls, and how to prioritize design efforts for the right controls.

Try this Method to Help with Complex Decisions (DMRCS)

A team approach to complex decisions, with many options and criteria, is suggested by Dr. Anderson-Cook and Dr. Lu: DMRCS.

Quality related to Reliability and Safety

Overlapping Ideas: Quality, Reliability, and Safety

What is the intercept of quality and safety? How concerned do we need to be about quality while we’re determining root causes?

Using SIPOC to Get Started

SIPOC diagrams are a great first step for our team in understanding the key people and elements to our process.

Risk Barriers as Swiss Cheese?

There’s a model that can help us visualize and consider the different barriers to harm: The Swiss Cheese Model of Accident Causation. Learn what makes up this model and how ideas are represented. There are also different ways that the model is being used today. How can we design for controls, policies, or actions that are part of the use of our product but outside of our control?

Environmental Stress Testing for Robust Designs

To help plan future tests and projects, we review qualitative accelerated test models that can be used early in a design process.

Choosing a Confidence Level for Test using FMEA

We should choose a confidence level for our requirements or their test plans. We can associate that confidence level with the level of risk associated with our product. FMEA is a great tool for us to refer to, to help us choose a relevant confidence level by basing our decision on one or more metrics that the FMEA can provide.

Getting Started with FMEA – It All Begins with a Plan

We’re starting to populate an FMEA table with our team. We get it started, but then we get stuck in disagreements. Or we think we finish it and then we don’t know what to do with it.

We can avoid these headaches with a little planning (or maybe a lot of planning – it depends on the project). We talk about risk management planning, as it relates to FMEA.

How can 8D help solve my recurring problem?

We talk about the 8D methodology, describe situations where we could benefit from it, list each of the 8 Disciplines, and compare it to PDSA and DMAIC.

Mistake-Proofing – the Poka-Yoke of Usability

How do we go about mistake-proofing our product design? As we’re looking at our user process, we can use a quality method that’s well-used in manufacturing production: poka-yoke (mistake-proof).