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Quality During Design Podcast Blog

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How Many Do We Need To Test?

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In this episode we review sampling for design tests. We talk through a generic thought process for choosing a statistically relevant sample size and propose some basics that we can all learn about to better understand sampling. Our goal is for us to be able to better talk through a sampling scenario with our quality…

Life Cycle Costing for Product Design Choices

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5 Aspects of Good Reliability Goals and Requirements

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Using Failure Rate Functions to Drive Early Design Decisions

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We have good requirements for the reliability of our design. We also have a preliminary design with ideas of how we’re going to manufacture it. Is our design idea good enough? Are there things we should do to improve its performance and reliability? For a physical product, there are three general stages in its life…

Types of Design Analyses possible with User Process Flowcharts

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Design Tolerances Based on Economics (Using the Taguchi Loss Function)

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Defining tolerances for our quality characteristics is sometimes not an easy task. If we set tight tolerances, it could be costly to make with a lot of rejects and rework in the future. If we’re too sloppy with our tolerances, then it can affect the functionality of our product, leading to unhappy customers, and also possible…