Effects Of Blocks Of Overloads And Underloads On Fatigue Crack Growth In 2024 T351 Sheet Specimens PDF Download
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Author | : M.R. Ling |
Publisher | : |
Total Pages | : |
Release | : 1990 |
Genre | : |
ISBN | : |
Download Effects of Blocks of Overloads and Underloads on Fatigue Crack Growth in 2024-T351 Sheet Specimens Book in PDF, ePub and Kindle
Author | : National Aeronautics and Space Adm Nasa |
Publisher | : Independently Published |
Total Pages | : 28 |
Release | : 2018-12-29 |
Genre | : |
ISBN | : 9781792718212 |
Download Overload and Underload Effects on the Fatigue Crack Growth Behavior of the 2024-T3 Aluminum Alloy Book in PDF, ePub and Kindle
Fatigue crack growth tests were conducted on 0.09 inch thick, 3.0 inch wide middle-crack tension specimens cut from sheets of 2024-T3 aluminum alloy. The tests were conducted using a load sequence that consisted of a single block of 2,500 cycles of constant amplitude loading followed by an overload/underload combination. The largest fatigue crack growth life occurred for the tests with the overload stress equal to 2 times the constant amplitude stress and the underload stress equal to the constant amplitude minimum stress. For the tests with compressive underloads, the fatigue crack growth life decreased with increasing compressive underload stress. Dawicke, David S. Langley Research Center NASA-CR-201668, NAS 1.26:201668 NAS1-96014; RTOP 538-02-10-01...
Author | : |
Publisher | : |
Total Pages | : 500 |
Release | : 1990 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 14 |
Release | : 1997 |
Genre | : |
ISBN | : |
Download Overload and Underload Effects on the Fatigue Crack Growth Behavior of the 2024-T3 Aluminum Alloy Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 580 |
Release | : 1991 |
Genre | : Aeronautics |
ISBN | : |
Download NASA SP. Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 1646 |
Release | : 1991 |
Genre | : Research |
ISBN | : |
Download Government Reports Annual Index Book in PDF, ePub and Kindle
Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Author | : |
Publisher | : |
Total Pages | : 1072 |
Release | : 1986 |
Genre | : Mechanics, Applied |
ISBN | : |
Download Applied Mechanics Reviews Book in PDF, ePub and Kindle
Author | : F. Romeiro |
Publisher | : |
Total Pages | : 15 |
Release | : 2004 |
Genre | : Materials |
ISBN | : |
Download Effect of Overloads and Underloads on Fatigue Crack Growth and Interaction Effects Book in PDF, ePub and Kindle
Under constant amplitude loading, a single variable (?K) is required in crack growth relationships. The transferability of fatigue laws, determined under constant amplitude loading, to variable amplitude fatigue requires at least an additional variable, whose evolution with crack length accounts for the interaction effects between cycles of different types. The crack opening level (Kop) is usually employed for this purpose because it can be determined from the experiments and compared with predictions from models or FEM analyses. This paper presents an analysis of fatigue crack growth on M(T) specimens of medium carbon steel specimens and using FEM analyses. The specimens are subjected to repeated blocks of cycles made up of one or several overloads separated by a variable number of baseline cycles. The experiments are simulated by FEM analyses, taking into account the cyclic plastic behavior of the low carbon steel. The main objective of this study is to better understand the mechanisms at the origin of interactions effects due to the presence of overloads (or underloads) at different locations of the block loading. It is concluded that the interaction effects are closely related to the cyclic plastic behavior of the material and namely to the Bauschinger effect.
Author | : |
Publisher | : |
Total Pages | : 568 |
Release | : 1991 |
Genre | : Aeronautics |
ISBN | : |
Download Aeronautical Engineering Book in PDF, ePub and Kindle
A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).
Author | : |
Publisher | : |
Total Pages | : 1076 |
Release | : 1998 |
Genre | : Metallurgy |
ISBN | : |
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