Analysis of the Corrosion Resistance of Aircraft Structure Joints with Double-Sided Rivets and Single-Sided Rivets

Q4 Engineering

Fatigue of Aircraft Structures Pub Date : 2020-12-01 DOI:10.2478/fas-2020-0006

P. Kamińska, P. Synaszko, Patryk Ciężak, K. Dragan

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引用次数: 1

Abstract

Abstract An important factor having a negative impact on the technical condition of aircraft structure elements is the adverse effect of the atmosphere, which causes formation of corrosion in aircraft structures, especially in riveted lap joints. The electric potential difference between the sheet material and the rivet, in the presence of humid air, may cause electrochemical corrosion. The paper presents specimens that imitate the repair on the Mi-24 helicopter with the use of blind rivets in places where solid double-sided rivets could not be used. The aim of the research was to assess the corrosion resistance of lap joints with the use of single-sided and double-sided rivets. The analysis of corrosion resistance was carried out based on accelerated aging tests in a salt spray chamber. The salt chamber tests were aimed at determining the changes taking place in the specimens exposed to the marine environment. In the course of periodic observations changes in the mass of the specimens and in the form of corrosion losses were recorded. These activities were aimed at determining whether the exposure of specimens in the salt chamber causes electrochemical corrosion or pillowing. In addition, the specimens were subjected to static strength tests to assess the effect of corrosion on the strength properties of riveted joints.

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飞机结构双面铆钉和单面铆钉接头的耐腐蚀性分析

摘要对飞机结构元件技术条件产生负面影响的一个重要因素是大气的不利影响，它会导致飞机结构，特别是铆接搭接处的腐蚀。在潮湿空气的存在下，片材和铆钉之间的电势差可能导致电化学腐蚀。本文介绍了在无法使用实心双面铆钉的地方使用盲铆钉对米-24直升机进行维修的样本。研究的目的是评估使用单面和双面铆钉的搭接接头的耐腐蚀性。在盐雾室加速老化试验的基础上进行了耐腐蚀性分析。盐室试验旨在确定暴露在海洋环境中的样本发生的变化。在定期观测过程中，记录了试样质量的变化和腐蚀损失的形式。这些活动旨在确定样品暴露在盐室中是否会导致电化学腐蚀或起球。此外，还对试样进行了静态强度试验，以评估腐蚀对铆接接头强度性能的影响。

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

Fatigue of Aircraft Structures Engineering-Safety, Risk, Reliability and Quality

CiteScore

0.40

自引率

0.00%

发文量

期刊介绍： The publication focuses on problems of aeronautical fatigue and structural integrity. The preferred topics include: full-scale fatigue testing of aircraft and aircraft structural components, fatigue of materials and structures, advanced materials and innovative structural concepts, damage tolerant design of aircraft structure, life extension and management of ageing fleets, structural health monitoring and loads, fatigue crack growth and life prediction methods, NDT inspections, airworthiness considerations.