Study on the separation mechanism of icing adhesion and fracture on the surface of 6061 aluminum alloy

IF 6.4 2区工程技术 Q1 THERMODYNAMICS

Case Studies in Thermal Engineering Pub Date : 2024-12-06 DOI:10.1016/j.csite.2024.105620

Jing Cui, Dezheng Jiang, Zhiwei Xing, Guangfeng Yang

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引用次数: 0

Abstract

The phenomena of icing and frost pose a significant threat to aviation safety. Understanding the adhesion mechanisms of surface ice and the fracture and separation mechanisms of ice accretion is fundamental to de-icing operations and the design of surfaces with anti-icing functionalities. While the toughness and fracture mechanisms of ice accretion have been extensively studied, there is a lack of research focusing on the stress- and toughness-driven fracture and separation mechanisms at the ice-substrate interface. This study combines experimental research, numerical simulations, and mechanistic analysis to investigate the interfacial fracture mechanism during the tensile separation of cylindrical ice accretions on aluminum alloy surfaces. Experimental results reveal that surface roughness is directly proportional to adhesion strength, while adhesion strength is inversely proportional to the contact area under the same roughness. A cohesive zone model (CZM) is employed to analyze the micro-scale stress and deformation of ice fracture. By integrating experimental data with numerical simulations, the influence mechanisms of surface roughness and contact area on ice adhesion strength are elucidated.

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结冰和结霜现象对航空安全构成重大威胁。了解表面冰的粘附机制以及冰吸附的断裂和分离机制对于除冰作业和设计具有防冰功能的表面至关重要。虽然对冰吸附的韧性和断裂机制进行了广泛研究，但缺乏对冰-基材界面上由应力和韧性驱动的断裂和分离机制的研究。本研究结合实验研究、数值模拟和机理分析，探讨了铝合金表面圆柱形冰吸积物拉伸分离过程中的界面断裂机理。实验结果表明，表面粗糙度与附着强度成正比，而附着强度与相同粗糙度下的接触面积成反比。采用内聚区模型（CZM）分析冰断裂的微尺度应力和变形。通过将实验数据与数值模拟相结合，阐明了表面粗糙度和接触面积对冰粘附强度的影响机制。

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

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.