Utilization of High-Temperature miniaturized testing to Assist in life management for gas turbine Blades: An Overview

IF 5 2区工程技术 Q1 ENGINEERING, MECHANICAL Theoretical and Applied Fracture Mechanics Pub Date : 2024-09-26 DOI:10.1016/j.tafmec.2024.104697

Zhufeng Yue

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Abstract

Safely operating gas turbine blades in aero-engines or industrial gas turbines under severe thermo-mechanical conditions always poses a continuous challenge. There is an urgent need for more reliable life prediction tools, necessitating earlier and more rigorous assessments of in-service damage. This paper introduces a systematic examination of high-temperature miniature specimen testing method within a practical life management framework. To improve current practices in assessing the condition of service-aged gas turbine blades, a proactive utilization of miniature specimen testing is recommended for early in-service assessment within the component lifecycle and integrated into a comprehensive life assessment/management framework. The paper outlines a structured approach to life management, combining miniature specimen sampling and creep and fatigue testing methods. This forms the basis for a novel, holistic life assessment methodology, which is proposed in this paper, incorporating the innovative use of high-temperature miniature specimen testing.

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利用高温微型化测试协助燃气轮机叶片的寿命管理：概述

在严酷的热机械条件下，航空发动机或工业燃气轮机叶片的安全运行始终是一个持续的挑战。目前迫切需要更可靠的寿命预测工具，从而需要更早、更严格地评估在役损坏情况。本文介绍了在实用寿命管理框架内对高温微型试样测试方法进行系统检查的方法。为了改善目前评估服役期燃气轮机叶片状况的方法，建议积极利用微型试样测试在部件生命周期内进行早期服役评估，并将其纳入全面的寿命评估/管理框架。本文概述了一种结构化的寿命管理方法，将微型试样取样与蠕变和疲劳测试方法相结合。这为本文提出的新颖、全面的寿命评估方法奠定了基础，并结合了高温微型试样测试的创新使用。

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来源期刊

Theoretical and Applied Fracture Mechanics 工程技术-工程：机械

CiteScore

8.40

自引率

18.90%

发文量

435

审稿时长

37 days

期刊介绍： Theoretical and Applied Fracture Mechanics'' aims & scopes have been re-designed to cover both the theoretical, applied, and numerical aspects associated with those cracking related phenomena taking place, at a micro-, meso-, and macroscopic level, in materials/components/structures of any kind. The journal aims to cover the cracking/mechanical behaviour of materials/components/structures in those situations involving both time-independent and time-dependent system of external forces/moments (such as, for instance, quasi-static, impulsive, impact, blasting, creep, contact, and fatigue loading). Since, under the above circumstances, the mechanical behaviour of cracked materials/components/structures is also affected by the environmental conditions, the journal would consider also those theoretical/experimental research works investigating the effect of external variables such as, for instance, the effect of corrosive environments as well as of high/low-temperature.