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Fatigue Life Under Random Loading For Several Power Spectral Shapes
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Book Synopsis Fatigue Life Under Random Loading for Several Power Spectral Shapes by : Sherman A. Clevenson
Download or read book Fatigue Life Under Random Loading for Several Power Spectral Shapes written by Sherman A. Clevenson and published by . This book was released on 1967 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Each of a number of aluminum-alloy test specimens was loaded by random forces at a constant root-mean-square stress level until rupture occurred. The forces were statistically stationary and Gaussian with a zero mean value. The fatigue life (to rupture) was determined for various values of the following statistical parameters: (a) root-mean-square nominal applied stress, (b) power spectral shape, (c) mean number of zero crossings per unit time, and (d) mean number of peak loads per unit time. The power spectra were varied over a passband of frequency for three spectral shapes either by holding the power constant with frequency or by varying it either directly or inversely proportional to the square of the frequency. The results indicate that the fatigue life was determined principally by the root-mean-square nominal applied stress level. The effects of spectral shape, average number of zero crossings, and average number of peak loads were insignificant in the ranges investigated. The fatigue life, based on the number of effective cycles, of the specimens under random loading was lower by at least an order of magnitude at all stress levels than that of the specimens loaded sinusoidally. A linear cumulative damage theory overestimated the fatigue life, especially at low stress levels. The fracture characteristics of the specimens which failed under random loading were similar to those which failed under sinusoidal loads.
Download or read book Fatigue Damage written by Christi Lalanne and published by CRC Press. This book was released on 2002-03-29 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: About the Series: This important new series of five volumes has been written with both the professional engineers and the academic in mind. Christian Lalanne explores every aspect of vibration and shock, two fundamental and crucially important areas of mechanical engineering, from both the theoretical and practical standpoints. As all products need to be designed to withstand the environmental conditions to which they are likely to be subjected, prototypes must be verified by calculation and laboratory tests, the latter according to specifications from national or international standards. The concept of tailoring the product to its environment has gradually developed whereby, from the very start of a design project, through the to the standards specifications and testing procedures on th e prototype, the real environment in which the product being tested will be functioning is taken into account. The five volumes of Mechanical Shock and Vibration cover all the issues that need to be addressed in this area of mechanical engineering. The theoretical analyses are placed in the context of the real world and of laboratory tests - essential for the development of specifications. Volume IV: Fatigue Damage Fatigue damage in a system with one degree of freedom is one of the two criteria applied when comparing the severity of vibratory environments. The same criterion is also employed for a specifciation representing the effects produced by the set of vibrations imposed in a real environment. In this volume, which is devoted to the calculation of fatigue damage, the author explores the hypotheses adopted to describe the behavior of material suffering fatigue and the laws of fatigue accumulation. He also considers the methods of counting the response peaks, which are used to establish the histogram when it is impossible to use the probability density of the peaks obtained with a Gaussian signal. The expressions for mean damage and its standard deviation are established and other hypotheses are tested.
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1967 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Semiannual Report to the Congress by : United States. National Aeronautics and Space Administration
Download or read book Semiannual Report to the Congress written by United States. National Aeronautics and Space Administration and published by . This book was released on 1967 with total page 1106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reports and Documents by : United States. Congress
Download or read book Reports and Documents written by United States. Congress and published by . This book was released on with total page 1416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Report to the Congress by : United States. National Aeronautics and Space Administration
Download or read book Report to the Congress written by United States. National Aeronautics and Space Administration and published by . This book was released on 1967 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1974 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanical Vibration & Shock: Fatigue damage by : Christian Lalanne
Download or read book Mechanical Vibration & Shock: Fatigue damage written by Christian Lalanne and published by . This book was released on 2002 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. National Aeronautics and Space Administration. Scientific and Technical Information Division Publisher : ISBN 13 : Total Pages :436 pages Book Rating :4.E/5 ( download)
Book Synopsis A Selected Listing of NASA Scientific and Technical Reports by : United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
Download or read book A Selected Listing of NASA Scientific and Technical Reports written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Division and published by . This book was released on 1968 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Shock and Vibration Bulletin by :
Download or read book The Shock and Vibration Bulletin written by and published by . This book was released on 1966 with total page 1208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanical Vibration and Shock Analysis, Fatigue Damage by : Christian Lalanne
Download or read book Mechanical Vibration and Shock Analysis, Fatigue Damage written by Christian Lalanne and published by John Wiley & Sons. This book was released on 2010-01-05 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical Vibration and Shock Analysis, Second Edition Volume 4: Fatigue Damage Fatigue damage in a system with one degree of freedom is one of the two criteria applied when comparing the severity of vibratory environments. The same criterion is also employed for a specification representing the effects produced by the set of vibrations imposed in a real-world environment. In this volume, which is devoted to the calculation of fatigue damage, the author explores the various hypotheses and models used to describe the behavior of material suffering fatigue and the laws of fatigue accumulation. He also considers the methods of counting response peaks, which are used to establish a histogram when it is impossible to use the probability density of the peaks obtained with a Gaussian signal. The expressions for mean damage and its standard deviation are established and other hypotheses are tested. The Mechanical Vibration and Shock Analysis five-volume series has been written with both the professional engineer and the academic in mind. Christian Lalanne explores every aspect of vibration and shock, two fundamental and extremely significant areas of mechanical engineering, from both a theoretical and practical point of view. The five volumes cover all the necessary issues in this area of mechanical engineering. The theoretical analyses are placed in the context of both the real world and the laboratory, which is essential for the development of specifications.
Book Synopsis Effects of Environment and Complex Load History on Fatigue Life by :
Download or read book Effects of Environment and Complex Load History on Fatigue Life written by and published by . This book was released on 1970 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Report written by and published by . This book was released on 1967 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Probabilistic Aspects of Fatigue by : Robert A. Heller
Download or read book Probabilistic Aspects of Fatigue written by Robert A. Heller and published by ASTM International. This book was released on 1972 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by : United States. Superintendent of Documents
Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1961 with total page 1284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications, Cumulative Index by : United States. Superintendent of Documents
Download or read book Monthly Catalog of United States Government Publications, Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1979 with total page 1504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government-wide Index to Federal Research & Development Reports by :
Download or read book Government-wide Index to Federal Research & Development Reports written by and published by . This book was released on 1967-10 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt:
