Application of 2D inverse heat transfer to analyze mechanical fatigue

IF 5.7 2区材料科学 Q1 ENGINEERING, MECHANICAL

International Journal of Fatigue Pub Date : 2025-04-26 DOI:10.1016/j.ijfatigue.2025.109030

Mohammad A. Amooie, Hunter B. Gilbert, Peyton J. Wilson, Michael M. Khonsari

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Abstract

This study presents a novel approach for reconstructing localized heat sources associated with fatigue degradation in metallic materials using 1D and 2D Inverse Heat Conduction Problem (IHCP) techniques, integrated with a Finite Element Method (FEM) framework. Traditional fatigue analysis methods are often constrained in their ability to analyze complex geometries. To address these limitations, an approach is introduced that leverages the self-heating observed during cyclic loading to estimate plastic work rates and predict fracture locations. The 2D IHCP demonstrates superior accuracy in capturing variations in heat fluxes and identifying critical regions prone to crack initiation. Experimental validation tests using stainless teel (SS) 321 specimens are presented with thermal and stress analysis data supporting the effectiveness of the proposed methodology. The results indicate that the 2D IHCP method is highly effective in predicting plastic work rate, crack initiation onset, Fracture Fatigue Entropy (FFE), and provides a robust framework for analyzing fatigue in components with complex geometries.

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二维逆传热在机械疲劳分析中的应用

本研究提出了一种新的方法，利用一维和二维反热传导问题（IHCP）技术，结合有限元法（FEM）框架，重建与金属材料疲劳退化相关的局部热源。传统的疲劳分析方法在分析复杂几何形状时往往受到限制。为了解决这些限制，引入了一种方法，利用循环加载过程中观察到的自热来估计塑性功速率并预测断裂位置。2D IHCP在捕获热通量变化和识别容易产生裂纹的关键区域方面表现出优越的准确性。实验验证测试使用不锈钢（SS） 321试样提出了热和应力分析数据，支持所提出的方法的有效性。结果表明，二维IHCP方法在预测塑性功速率、裂纹起裂时间、断裂疲劳熵（FFE）方面具有较高的有效性，为复杂几何构件的疲劳分析提供了一个可靠的框架。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Fatigue 工程技术-材料科学：综合

CiteScore

10.70

自引率

21.70%

发文量

619

审稿时长

58 days

期刊介绍： Typical subjects discussed in International Journal of Fatigue address: Novel fatigue testing and characterization methods (new kinds of fatigue tests, critical evaluation of existing methods, in situ measurement of fatigue degradation, non-contact field measurements) Multiaxial fatigue and complex loading effects of materials and structures, exploring state-of-the-art concepts in degradation under cyclic loading Fatigue in the very high cycle regime, including failure mode transitions from surface to subsurface, effects of surface treatment, processing, and loading conditions Modeling (including degradation processes and related driving forces, multiscale/multi-resolution methods, computational hierarchical and concurrent methods for coupled component and material responses, novel methods for notch root analysis, fracture mechanics, damage mechanics, crack growth kinetics, life prediction and durability, and prediction of stochastic fatigue behavior reflecting microstructure and service conditions) Models for early stages of fatigue crack formation and growth that explicitly consider microstructure and relevant materials science aspects Understanding the influence or manufacturing and processing route on fatigue degradation, and embedding this understanding in more predictive schemes for mitigation and design against fatigue Prognosis and damage state awareness (including sensors, monitoring, methodology, interactive control, accelerated methods, data interpretation) Applications of technologies associated with fatigue and their implications for structural integrity and reliability. This includes issues related to design, operation and maintenance, i.e., life cycle engineering Smart materials and structures that can sense and mitigate fatigue degradation Fatigue of devices and structures at small scales, including effects of process route and surfaces/interfaces.