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by Mike Sondalini 6 Comments

Metal Fatigue Failure

Metal Fatigue Failure

Metal Fatigue Failure Theory and Design Considerations

This article is a basic introduction to the mechanism of metal fatigue failure where parts break after a period of time in service. Explanations of accepted theories are provided and relevant design practices to reduce metal fatigue are presented and explained. [Read more…]

Filed Under: Articles, on Maintenance Reliability, Plant Maintenance Tagged With: failure mechanism, Fatigue, Metal

by Fred Schenkelberg Leave a Comment

Using rain-flow counting methods for process wear out studies

Using rain-flow counting methods for process wear out studies

Guest Post Prepared by Eugene Danneman, Wind Wear LLC

Introduction

Analyzing and visualizing data that is related to equipment wear-out (fatigue stage) over a specific time span is a challenge. Analyzing systems, equipment and components exposed to spectrum loading as opposed to uniform cyclical loading that span years or decades or centuries requires a special approach. Think of roads, bridges and other assets with long life spans that are susceptible to wear out mechanisms caused by external and internal loads, varying load durations, temperature swings and corrosion. [Read more…]

Filed Under: Articles, Musings on Reliability and Maintenance Topics, on Product Reliability Tagged With: data analysis, Fatigue, Production Data

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