Prediction of Fatigue-crack-propagation Behavior in Panels with Simulated Rivet Forces PDF Download
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Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category : Aluminum alloys
Languages : en
Pages : 44
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Book Description
Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category : Aluminum alloys
Languages : en
Pages : 44
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 798
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Author: I. E. Figge
Publisher:
ISBN:
Category : Aircraft
Languages : en
Pages : 23
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Book Description
Analytical and experimental studies were conducted on rates of fatigue crack propagation in sheet specimens containing either symmetric or nonsymmetric cracks subjected to uniform external loadings, simple concentrated loadings, or combinations of both. The concentrated loads simulated the rivet forces in an actual structure and were applied by a special hydraulic fixture which is described. An experimentally determined relation between the stress state near the tip of the crack and the fatigue crack propagation rate for a given material was employed to predict the crack growth for specimens subjected to simple loading conditions with good agreement. Superposition of stress-intensity factors for simple loading was used sucessfully to predict crack growth for specimens subjected to complex loadings.
Author: Air Force Flight Dynamics Laboratory (U.S.)
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 924
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Book Description
The document is comprised of papers presented at the Air Force Conference on Fatigue of Aircraft Structures and Materials, sponsored by the Air Force Flight Dynamics Laboratory (AFFDL) and the Air Force Materials Laboratory (AFML), Air Force Systems Command. The purpose of the Conference was to discuss technological advancements in fatigue and fracture theory. The Conference was comprised of ten technical sessions (including two panel discussions) entitled 'The Role of Materials in Structures'; 'Fundamentals I + II'; 'Criteria'; 'Fracture I + II'; 'Phenomena I + II'; 'Analysis'; 'Design and Service Experience'. A total of fifty-six technical papers were presented.
Author:
Publisher:
ISBN:
Category : Fasteners
Languages : en
Pages : 66
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Book Description
The stress-intensity factor and forces in the most highly loaded rivet and stringer were calculated for a cracked sheet with riveted and uniformly spaced stringers. Two symmetrical cases of crack location were considered - the case of a crack extending equally on both sides of a stringer and the case of a crack extending equally on both sides of a point midway between two stringers. The complete results are presented on design graphs for systematic variations of crack lengths much less than the stringer spacing. Also, the forces in the most highly loaded stringer and rivet asymptotically approach limiting values for increasing crack length. The stress-intensity factor and the limiting values of the stringer and rivet forces are smaller for stiffer or more closely spaced stringers or for more closely spaced rivets.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 702
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 272
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Book Description
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1464
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Book Description
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1504
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