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A Primer on Predictive Maintenance to Improve Asset Efficiency

Predictive maintenance keeps equipment and assets running when you need them to. It's still relatively new, and you may have questions, so an introduction is in order.
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Nearly everyone in manufacturing, from equipment manufacturers to processing plants, commonly face the challenge of keeping their fleet, machinery, and other assets working efficiently, while also reducing the cost of maintenance and time-sensitive repairs.

Considering the aggressive time-to-market required for industrial products and services, it is crucial to identify the cause of potential faults or failures before they have an opportunity to occur. Emerging technologies such as the Industrial Internet of Things, big data analytics, and cloud data storage are enabling more vehicles, industrial equipment, and assembly robots to send condition-based data to a centralized server, making fault detection easier, more practical, and more direct.

By proactively identifying potential issues, companies can deploy their maintenance services more effectively and improve equipment up-time. The critical features that help to predict faults or failures are often buried in structured data, such as year of production, make, model, warranty details, as well as unstructured data such as maintenance history and repair logs.

By leveraging artificial intelligence models to identify anomalous behavior, the information derived from the equipment sensors can be turned into meaningful and actionable insights for proactive maintenance of assets, thereby preventing incidents that result in asset downtime or accidents.  Commonly known as predictive maintenance, this added intelligence enables organizations to forecast when or if functional equipment will fail so that its maintenance and repair can be scheduled before the failure occurs.

The Market: North America Tops Market Share

Due to higher spending by companies looking to optimize operating costs and increase profitability, North America will continue to be the biggest market for predictive maintenance solutions. With an estimated market share of 31.67%, North America is expected to grow its predictive maintenance solutions at a CAGR of 24.5%, maintaining its lead from 2017 through 2022. Key players include Bosch, GE, Hitachi, Honeywell and Rockwell Automation, just to name a few. 

 

 

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Predictive Maintenance Approach: Increasing Product Availability

The underlying architecture of a preventive maintenance model is fairly uniform irrespective of its end applications. The analytics usually reside on a host of IT platforms, but these layers are systematically described as:

  • Data acquisition and storage (either on the cloud or at the edge)
  • Data transformation—conversion of raw data for machine learning models
  • Condition monitoring—alerts based on asset operating limits
  • Asset health evaluation—generating diagnostic records based on trend analysis if asset health has already started declining
  • Prognostics—generating predictions of failure through machine learning models, and estimating remaining life
  • Decision support system—recommendations of best actions
  • Human interface layer—making all information accessible in an easy-to-understand format Failure prediction, fault diagnosis, failure-type classification, and recommendation of relevant maintenance actions are all a part of predictive maintenance methodology.

As industrial customers become increasingly aware of the growing maintenance costs and downtime caused by the unexpected machinery failures, predictive maintenance solutions are gaining even more traction. With the manufacturing, energy and utilities verticals among the biggest demand drivers for predictive maintenance, it is even more critical for equipment manufacturers, EPCs and owners/operators to adopt a predictive maintenance solution to maintain a competitive advantage.  

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The bigger players have already been using this methodology for more than a decade. Small- and medium-sized companies in the manufacturing sector also can reap its advantages by keeping repair costs low and meeting initial operational costs for new operations.

While it evidently offers more business benefits than corrective and preventative maintenance programs, predictive maintenance is also a step ahead of preventive maintenance. As maintenance work is scheduled at preset intervals, maintenance technicians are informed of the likelihood of parts and components failing during the next work cycle and can take action to minimize downtime. 

Gain the Benefits of Predictive Maintenance

 In addition to the advantages of controlling repair costs, avoiding warranty costs for failure recovery, reducing unplanned downtime and eliminating the causes of failure, predictive maintenance employs non-intrusive testing techniques to evaluate and compute asset performance trends. Additional methods used can include thermodynamics, acoustics, vibration analysis, and infrared analysis, among others.

 The continuous developments in big data, machine-to-machine communication, and cloud technology have created new possibilities for the investigation of information derived from industrial assets. Condition monitoring in real-time is viable thanks to inputs from sensors, actuators, and other control parameters. What stakeholders need is a bankable analytics and engineering service partner who can help them leverage data science not only to predict embryonic asset failures, but also to eliminate them and take action in a timely manner.

Dr. Sean Otto currently leads business development for Cyient’s Advanced Analytics team, focused on designing AI and Machine Learning models to improve the functionality and reliability of equipment and systems.

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