Determination of aircraft hydraulic system pipeline leak cause

Tatyana Osipok,Semyon Zaides,Hin Nguyen,A Glezer,S Roshchupkin

doi:10.1051/matecconf/202032903078

Abstract

The purpose of this article is to determine the cause of leak of the aircraft hydraulic system pipeline detected during pre-flight flight preparation. Results of spectral analysis of material, mechanical testing, analysis of defect structure by optical fractography and metallographic analysis are presented.

Highlights

Despite the successes in the development of various technologies, the destruction of machine parts, accompanied by material losses and even human lives, is still happening
Elements of aircraft hydraulic system are subjected to considerable vibration loads during operation, as well as sharp pressure and temperature differences, as a result of which there is a high susceptibility of elements to the formation of various types of defects that lead to malfunctions and failures of the hydraulic system [2-3]
Tensile strength is determined by stretching two longitudinal samples in the form of strips cut along the pipe axis on a test machine LFM-100 in accordance with the requirements of GOST 10006-80

Summary

Introduction

Despite the successes in the development of various technologies, the destruction of machine parts, accompanied by material losses and even human lives, is still happening. The accumulation of experience in determining the nature of damage and the causes of its occurrence subsequently contribute to the improvement of the manufacturing processes of parts and control methods, which in turn make it possible to prevent subsequent destruction of this type [1]. Elements of aircraft hydraulic system are subjected to considerable vibration loads during operation, as well as sharp pressure and temperature differences, as a result of which there is a high susceptibility of elements to the formation of various types of defects that lead to malfunctions and failures of the hydraulic system [2-3]. In order to achieve this goal, it is necessary to carry out: Material Characteristics Analysis; spectral analysis and mechanical testing to establish compliance with material standard requirement; analysis of defect structure by optical fractography method; metallographic analysis of material

Objectives

Methods

Results