How to do failure analysis of gas turbine blade ?

Thread starter Manish Thakur
Start date Apr 17, 2016
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Analysis Failure Gas Gas turbine Turbine

In summary, the process of failure analysis for gas turbine blades involves visually examining the blade, determining its material composition, and using non-destructive testing methods to identify defects or cracks. Common causes of failure include material fatigue, high temperatures, corrosion, and manufacturing defects. Various types of testing, such as visual inspections, chemical analysis, and simulations, can be used in the analysis. Failure analysis can also help prevent future failures by identifying the root cause and improving design and maintenance processes. To prolong the life of gas turbine blades, proper maintenance, inspections, and using high-quality materials are important.

Apr 17, 2016

Manish Thakur

I want do thermal and structural analysis (Failure) on gas turbine blade. So what how to begin. Kindly help me.

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Apr 17, 2016

rootone

As far as I know the manufacturers of turbines subject prototypes for a new design to destructive tests where blades and other parts are deliberately damaged.
It's not the kind of thing they would want to rely on a theoretical assessment for before going into production.

1. What is the process of failure analysis for gas turbine blades?

The process of failure analysis for gas turbine blades involves several steps. First, the blade is examined visually to identify the location and extent of the failure. Then, the blade is disassembled and its material composition is determined. Next, various non-destructive testing methods, such as ultrasonic testing or X-ray imaging, are used to identify any internal defects or cracks. The blade is also examined under a microscope to determine the type and cause of the failure. Finally, all the data and findings are analyzed to determine the root cause of the failure.

2. What are the common causes of failure in gas turbine blades?

Some of the most common causes of failure in gas turbine blades include material fatigue, high temperatures and thermal stresses, corrosion, foreign object damage, and manufacturing defects. Other causes may include improper maintenance, design flaws, and operational errors.

3. What types of testing are used in failure analysis of gas turbine blades?

Several types of testing may be used in the failure analysis of gas turbine blades. These include visual inspections, non-destructive testing methods such as ultrasonic testing and X-ray imaging, chemical analysis, and microstructural analysis. In some cases, finite element analysis and computational fluid dynamics simulations may also be used to identify potential failure points.

4. How can failure analysis of gas turbine blades help to prevent future failures?

By identifying the root cause of a failure in a gas turbine blade, failure analysis can help to prevent future failures. This information can be used to improve the design and manufacturing processes, implement better maintenance practices, and make necessary repairs or replacements to prevent similar failures from occurring in the future.

5. What are some steps that can be taken to prolong the life of gas turbine blades?

To prolong the life of gas turbine blades, proper maintenance and inspections are crucial. This includes regular cleaning to prevent corrosion, periodic inspections to identify any potential issues, and timely repairs or replacements when necessary. Additionally, using high-quality materials and implementing design improvements based on failure analysis findings can also help to prolong the life of gas turbine blades.