Continuous Flow Engine Component Repairability Assessment

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Solution Overview

Problem

Existing methods struggle to efficiently evaluate and predict the repair needs of continuous flow engine components, such as gas turbines and steam turbines, due to their complex nature and the difficulty in assessing damage and wear over time, leading to potential catastrophic failures and significant losses from premature component exchange or inadequate repairs.

Innovation Solution

A method utilizing sensor data, inspection data, and virtual models to assess damage, combined with additive and subtractive manufacturing evaluations, and a centralized evaluation system to determine the feasibility and optimal repair processes for continuous flow engine components, including unique identifiers and distributed databases for improved reliability and efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If continuous flow engine components are used for extended periods to maximize utilization, then productivity increases, but the risk of catastrophic failure and reliability decreases

Engineering Contradiction:
Improveengine utilizationVSAvoidcomponent reliability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The system performs preliminary damage assessment and repairability evaluation before catastrophic failure occurs. By continuously monitoring component conditions and predicting future damage states, the system enables proactive maintenance scheduling that prevents failures while maximizing component utilization periods.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system implements feedback loops where inspection data, sensor readings, and repair outcomes are continuously fed back into the evaluation model. This allows the system to learn from actual component behavior and improve its predictions of component lifespan and repairability, enabling more accurate optimization between utilization and reliability.

Inventive Principle:
Principle #23Feedback

2Reliability

If components are replaced early to ensure reliability, then reliability improves, but productivity and resource efficiency worsen due to premature exchange

Engineering Contradiction:
Improvecomponent reliabilityVSAvoidcomponent utilization
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system performs preliminary assessment to determine the actual remaining service life and repairability of components. By accurately predicting when components will fail or become unreparable, the system avoids premature replacement and extends component utilization to the maximum safe limit.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system enables components to essentially 'report' their own condition through integrated sensors and inspection data, allowing the evaluation system to determine optimal replacement timing based on actual component state rather than conservative fixed schedules.

Inventive Principle:
Principle #25Self-service

3Measurement precision

If extensive inspection and evaluation procedures are performed to assess damage accurately, then measurement precision improves, but device complexity and time consumption increase

Engineering Contradiction:
Improvedamage assessment accuracyVSAvoidinspection system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The inspection and evaluation process is segmented into multiple stages: initial sensor-based monitoring, targeted inspection of specific high-risk areas, and comprehensive evaluation only when needed. This segmentation allows the system to achieve high measurement precision for critical parameters while avoiding the complexity and time cost of complete component disassembly and inspection.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The evaluation system integrates multiple functions into a single platform: damage detection, repairability assessment, repair method selection, and maintenance scheduling. This multi-functionality reduces overall system complexity by consolidating what would otherwise require separate specialized systems for each function.

Inventive Principle:
Principle #6Universality (Multi-functionality)

4Ease of repair

If comprehensive repair evaluations including additive and subtractive manufacturing assessments are performed, then ease of repair improves, but device complexity and time consumption increase

Engineering Contradiction:
Improverepair feasibility assessmentVSAvoidevaluation time
Core Design Contradiction:
Ease of repairVSLoss of time

Solution Approach 1:

The system performs preliminary evaluation of multiple repair methods (additive manufacturing, subtractive manufacturing, hybrid approaches) before the actual repair process. By pre-assessing the feasibility, cost, and time requirements of different repair approaches based on damage characteristics, the system quickly identifies the optimal repair method without time-consuming trial and error during the actual repair process.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The repair evaluation system is dynamic and adaptive, adjusting its assessment depth and methodology based on the specific damage characteristics detected. For minor damages, the system performs quick assessments favoring simple repairs; for complex damages, it conducts more comprehensive evaluations of multiple repair approaches, optimizing the balance between assessment thoroughness and time consumption.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP4306769B1Repair method of components of continuous flow engines
Publication Date: 2025.12.17 SIEMENS ENERGY GLOBAL GMBH & CO KG
  • EP4306769B1 patent drawingFigure 1~2

AI summary

The present invention refers to an improved method of repairing a continuous flow engine component utilizing an automatic system. Furthermore, the present invention refers to an inspection device to be utilized in such method and an evaluation system utilizing such inspection device and method. Additionally, the present invention refers to a computer program product adapted to realize the inventive method.