BS ISO 13939:2019 - Foil Bearings Performance Testing

Welcome to the comprehensive guide on the BS ISO 13939:2019 standard, a pivotal document for professionals in the field of mechanical engineering and materials science. This standard is essential for those involved in the design, testing, and application of foil journal bearings, providing a detailed framework for assessing their performance under various conditions.

Overview of BS ISO 13939:2019

The BS ISO 13939:2019 standard is a meticulously crafted document that outlines the procedures for performance testing of foil journal bearings. Released on July 30, 2019, this standard is a critical resource for ensuring the reliability and efficiency of these components in practical applications. With a total of 24 pages, it offers a comprehensive approach to testing static load capacity, friction coefficient, and lifetime of foil bearings.

Key Features and Benefits

• Standard Number: BS ISO 13939:2019
• Pages: 24
• Release Date: 2019-07-30
• ISBN: 978 0 539 00578 3
• Status: Standard

This standard is indispensable for engineers and researchers who are focused on enhancing the performance and durability of foil journal bearings. By adhering to the guidelines set forth in this document, professionals can ensure that their bearings meet the highest standards of quality and performance.

Understanding Foil Journal Bearings

Foil journal bearings are a type of fluid film bearing that are widely used in high-speed, high-temperature applications. They are known for their ability to operate without lubrication, making them ideal for environments where traditional lubricants would fail. The performance of these bearings is critical to the overall efficiency and reliability of the machinery in which they are used.

Performance Testing Parameters

The BS ISO 13939:2019 standard provides a detailed methodology for testing the following key parameters of foil journal bearings:

• Static Load Capacity: This parameter measures the maximum load that a bearing can support without experiencing permanent deformation. It is crucial for ensuring that the bearing can withstand the operational stresses it will encounter.
• Friction Coefficient: The friction coefficient is a measure of the resistance to motion between the bearing surfaces. A lower friction coefficient indicates a more efficient bearing, which can lead to reduced energy consumption and wear.
• Lifetime: The lifetime of a bearing is a measure of its durability and reliability over time. This parameter is essential for predicting maintenance schedules and ensuring the long-term performance of the machinery.

Why Choose BS ISO 13939:2019?

Choosing the BS ISO 13939:2019 standard means opting for a document that is recognized globally for its thoroughness and precision. It is designed to help professionals achieve the highest levels of performance and reliability in their foil journal bearings. By following the guidelines in this standard, you can ensure that your bearings are tested to the most rigorous standards, providing peace of mind and confidence in their performance.

Applications and Industries

Foil journal bearings are used in a variety of industries, including aerospace, automotive, and energy. They are particularly valuable in applications where high speeds and temperatures are common, such as in gas turbines and turbochargers. The BS ISO 13939:2019 standard is applicable across these industries, providing a consistent framework for testing and evaluation.

Conclusion

In conclusion, the BS ISO 13939:2019 standard is an essential tool for anyone involved in the design, testing, and application of foil journal bearings. Its comprehensive guidelines ensure that these components are tested to the highest standards, guaranteeing their performance and reliability in demanding environments. By incorporating this standard into your testing protocols, you can enhance the efficiency and longevity of your machinery, ultimately leading to greater success in your projects.

BS ISO 13939:2019

This standard BS ISO 13939:2019 Foil bearings. Performance testing of foil journal bearings. Testing of static load capacity, friction coefficient and lifetime is classified in these ICS categories:

• 21.100.10 Plain bearings

This document describes a method for comparing the performance test results of foil journal bearings, which are lubricated by air (gas) and supported by the gas-dynamic force generated via the rotations of the rotating shaft. The test procedure proposed in this document aims to predict and evaluate the static load capacity, friction coefficient and lifetime of foil journal bearings and compare the results of these parameters under different test conditions, i.e. at varying dimensions of foil bearing, rotational speed of a shaft, pressure and humidity of the surroundings. The magnitude of the static load capacity can change according to the test setting, as the test conditions can be changed.

The test method described in this document has the following application coverage.

1. The criterion for evaluating the static load capacity is the steady-state condition; i.e. the method is applicable under limited operating conditions with uniform magnitude, load direction and rotational speed.

2. The evaluation procedure can be applied only if the foil journal bearing is under a uniform rotating inertia at an arbitrary rotational speed.

3. The dynamic load with time-variant magnitude and direction is not considered.