Once you understand the failure mode that resulted in the failure and the failure mechanism that resulted in the failure mode, it is possible to begin the process of estimating the usable life of the component. In other words, how quickly is the time bomb ticking toward the failure?

The first thing to ascertain is whether the failure mechanism is present at all times or if it occurs only on a random basis.

For instance, if the pressure sensor diaphragm is intended to flex frequently and continuously, and if the flexure is greater than the fatigue limit of the metal, then deterioration is present all the time. In this situation, the time or number of cycles to failure needs to be monitored, then used as a basis for performing preventive maintenance.

On the other hand, if failures are random, the timing of predictive and preventive maintenance may need to be designed to capture random events. For instance, if the failure is the result of plugging due to random instances when fluid filter maintenance has been forgotten, a form of predictive maintenance capable of capturing events that occur at random times is needed. For example, it might be possible to spot plugging by including an algorithm in control software that identifies instances where the pressure level stops cycling like normal. The buffer provided by partial plugging can be viewed as an explanation for abnormal operation. 

Tip from "Critical Connections: Linking Failure Modes and Failure Mechanisms to Predictive and Preventive Maintenance" by Daniel T. Daley

Upcoming Events

August 9 - August 11 2022

MaximoWorld 2022

View all Events
banner
80% of Reliabilityweb.com newsletter subscribers report finding something used to improve their jobs on a regular basis.
Subscribers get exclusive content. Just released...MRO Best Practices Special Report - a $399 value!
DOWNLOAD NOW
“Steel-ing” Reliability in Alabama

A joint venture between two of the world’s largest steel companies inspired innovative approaches to maintenance reliability that incorporate the tools, technology and techniques of today. This article takes you on their journey.

Three Things You Need to Know About Capital Project Prioritization

“Why do you think these two projects rank so much higher in this method than the first method?” the facilitator asked the director of reliability.

What Is Industrial Maintenance as a Service?

Industrial maintenance as a service (#imaas) transfers the digital and/or manual management of maintenance and industrial operations from machine users to machine manufacturers (OEMs), while improving it considerably.

Three Things You Need to Know About Criticality Analysis

When it comes to criticality analysis, there are three key factors must be emphasized.

Turning the Oil Tanker

This article highlights the hidden trap of performance management systems.

Optimizing Value From Physical Assets

There are ever-increasing opportunities to create new and sustainable value in asset-intensive organizations through enhanced use of technology.

Conducting Asset Criticality Assessment for Better Maintenance Strategy and Techniques

Conducting an asset criticality assessment (ACA) is the first step in maintaining the assets properly. This article addresses the best maintenance strategy for assets by using ACA techniques.

Harmonizing PMs

Maintenance reliability is, of course, an essential part of any successful business that wants to remain successful. It includes the three PMs: predictive, preventive and proactive maintenance.

How an Edge IoT Platform Increases Efficiency, Availability and Productivity

Within four years, more than 30 per cent of businesses and organizations will include edge computing in their cloud deployments to address bandwidth bottlenecks, reduce latency, and process data for decision support in real-time.

MaximoWorld 2022

The world's largest conference for IBM Maximo users, IBM Executives, IBM Maximo Partners and Services with Uptime Elements Reliability Framework and Asset Management System is being held Aug 8-11, 2022