A Study on Fatigue Fracture Failure of UAV Landing Gear

2016 ◽  
Vol 6 (1) ◽  
pp. 9
Author(s):  
A.S. VIGNESH ◽  
A. VIVEK ◽  
◽  
Keyword(s):  
Fatigue Fracture ◽  
Landing Gear ◽  
Fracture Failure

Fracture Failure Analysis of Φ50.8mm Coiled Tubing

2020 ◽  
Vol 993 ◽  
pp. 1235-1241
Author(s):  
Na Li ◽  
Li Xia Zhu ◽  
Shen Cong ◽  
Yao Rong Feng
Keyword(s):  
Fatigue Fracture ◽  
Chemical Properties ◽  
Source Area ◽  
Sem Analysis ◽  
Fracture Failure ◽  
Coiled Tubing ◽  
Micro Cracks ◽  
Macroscopic Observation ◽  
Physical And Chemical ◽  
And Chemical Properties

The fractured coiled tubing of TS90 steel grade Φ50.8 mm ×3.96 mm in a certain oilfield was analyzed through macroscopic observation, magnetic powder inspection, physical and chemical properties testing, microstructure analysis and SEM analysis. The results showed that the coiled tubing fracture belonged to fatigue fracture and the fatigue crack originated from the area of cyclic friction on the outer surface of the tubing. The cyclic axial plastic stress of the tubing in service caused micro-cracks in the source area and finally led to fatigue fracture failure of the tubing.

Fatigue fracture of a nose landing gear in a military transport aircraft

2006 ◽  
Vol 13 (3) ◽  
pp. 474-479 ◽  
Author(s):  
L.A.L. Franco ◽  
N.J. Lourenço ◽  
M.L.A. Graça ◽  
O.M.M. Silva ◽  
P.P. de Campos ◽  
...  
Keyword(s):  
Fatigue Fracture ◽  
Landing Gear ◽  
Transport Aircraft

Fatigue fracture of a main landing gear swinging lever in a civil aircraft

2008 ◽  
Vol 15 (6) ◽  
pp. 755-765 ◽  
Author(s):  
F. Bagnoli ◽  
F. Dolce ◽  
M. Colavita ◽  
M. Bernabei
Keyword(s):  
Fatigue Fracture ◽  
Landing Gear ◽  
Civil Aircraft

scholarly journals Detecting and Identifying Artificial Acoustic Emission Signals in an Industrial Fatigue Environment

2008 ◽  
Vol 13-14 ◽  
pp. 251-260
Author(s):  
James J. Hensman ◽  
Rhys Pullin ◽  
Mark J. Eaton ◽  
Keith Worden ◽  
Karen M. Holford ◽  
...  
Keyword(s):  
Signal Processing ◽  
Acoustic Emission ◽  
Monitoring System ◽  
Fatigue Fracture ◽  
Large Scale ◽  
Landing Gear ◽  
Emission Source ◽  
Acoustic Emission Source ◽  
Industrial Environments ◽  
Fatigue Fractures

This paper details progress towards the application of a methodology for Acoustic Emission (AE) detection and interpretation for the monitoring of fatigue fractures in large-scale industrial environments. An artificial acoustic emission source, representative of a fatigue fracture was injected into a test of a substantial landing gear component. An AE monitoring system was then used to successfully locate and identify the source using the new signal processing methodology.

Principal Component Analysis of Acoustic Emission Signals From Landing Gear Components: An Aid to Fatigue Fracture Detection

Strain ◽  
2010 ◽  
Vol 47 ◽  
pp. e588-e594 ◽  
Author(s):  
M. J. Eaton ◽  
R. Pullin ◽  
J. J. Hensman ◽  
K. M. Holford ◽  
K. Worden ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
Acoustic Emission ◽  
Fatigue Fracture ◽  
Principal Component ◽  
Component Analysis ◽  
Landing Gear ◽  
Fracture Detection

Ratcheting Properties of Steel 45 and 42CrMo under High Cyclic Stress

2013 ◽  
Vol 579-580 ◽  
pp. 52-55
Author(s):  
Yue Feng Li ◽  
Xu Dong Pan ◽  
Guang Lin Wang
Keyword(s):  
Fatigue Fracture ◽  
Stress Level ◽  
Cyclic Stress ◽  
Cyclic Softening ◽  
Work Time ◽  
Stress Control ◽  
Fracture Failure ◽  
Properties Of Materials ◽  
Mechanical Elements

Disposable mechanical elements are widely used in many fields such as aerospace and military industries. It is known for their extremely short work time which is quite different from general mechanical elements. The stress level of disposable mechanical elements is much higher than general mechanical elements. In this situation, the traditional fatigue fracture failure will be replaced by fatigue elastic failure used in the design of disposable mechanical elements. The fatigue elastic failure is closely related to the ratcheting properties of materials. Therefore, this paper focuses on the ratcheting properties of typical cyclic softening materials steel 45 and 42 CrMo. The fatigue elastic failure phenomenen of these two materials are shown through the stress control tests.

scholarly journals Entropy Based Fatigue, Fracture, Failure Prediction and Structural Health Monitoring

Entropy ◽  
2020 ◽  
Vol 22 (10) ◽  
pp. 1178 ◽  
Author(s):  
Cemal Basaran
Keyword(s):  
Structural Health Monitoring ◽  
Fatigue Fracture ◽  
Health Monitoring ◽  
Failure Prediction ◽  
Special Issue ◽  
Structural Health ◽  
Fracture Failure

This special issue is dedicated to entropy-based fatigue, fracture, failure prediction and structural health monitoring[...]

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