Investigation of Fatigue Crack Growth Rate in Fuselage of Large Transport Aircraft using FEA Approach

Investigation of Fatigue Crack Growth Rate in Fuselage of Large Transport Aircraft using FEA Approach

Venkatesha B K

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Prashanth K P

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Deepak Kumar T

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Bangalore University

Investigation of Fatigue Crack Growth Rate in Fuselage of Large Transport Aircraft using FEA Approach

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Abstract

Transport aircraft is a highly complex airframe structure. The aircraft fuselage shell is composed of stressed skin, circumferential frames and longitudinal stringers. The skin is connected to frames and stringers mostly by rivets. Fuselage has a number of riveted joints and is subjected to a major loading of differential internal pressurization. When the fuselage is pressurized and depressurized during each takeoff and landing cycle of aircraft, the metal skin of fuselage expands and contracts resulting in metal fatigue. Fatigue damage accumulates during every cycle of loading in the airframe structure during its operation. The accumulated damage reaches a critical value, a fatigue cracks initiate from riveted holes and propagate to critical sizes leading to catastrophic failure of the structure. The large transport aircraft are designed to tolerate large fatigue cracks. This paper focuses its attention on damage tolerance design of a fuselage structure of transport aircraft. The objective of this paper is to investigate crack initiation, and crack growth rate in the flat stiffened panel of fuselage structure. The longitudinal crack is initiated from the rivet hole location and stress intensity factor is calculated using modified virtual crack closure integral (MVCCI) method during each stage of crack propagation.

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Venkatesha B K. 2014. \u201cInvestigation of Fatigue Crack Growth Rate in Fuselage of Large Transport Aircraft using FEA Approach\u201d. Global Journal of Research in Engineering - A : Mechanical & Mechanics GJRE-A Volume 14 (GJRE Volume 14 Issue A1): .

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GJRE Volume 14 Issue A1
Pg. 11- 19

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Journal Specifications

Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

Keywords

differential internal pressurization fatigue crack growth rate longitudinal crack metal fatigue MVCCI method stiffened panel stress intensity fa

Submission ReceivedDecember 12, 2013
Peer Review Double Blind
Handling Editor
Accepted January 3, 2014
Published January 15, 2014

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v1.2

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March 2, 2014

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Article Matrices

Total Score: 103

Country: India

Subject: Global Journal of Research in Engineering - A : Mechanical & Mechanics

Authors: Venkatesha B K, Prashanth K P, Deepak Kumar T (PhD/Dr. count: 0)

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Total Downloads: 2442

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