Effect of Load Variables on Fatigue Crack Initiation and Propagation
Author: D. F. Bryan
Publisher: ASTM International
Published: 1980
Total Pages: 256
ISBN-13: 9780803107205
DOWNLOAD EBOOK →Author: D. F. Bryan
Publisher: ASTM International
Published: 1980
Total Pages: 256
ISBN-13: 9780803107205
DOWNLOAD EBOOK →Author: J. Schijve
Publisher: Springer Science & Business Media
Published: 2008-12-16
Total Pages: 627
ISBN-13: 1402068085
DOWNLOAD EBOOK →Fatigue of structures and materials covers a wide scope of different topics. The purpose of the present book is to explain these topics, to indicate how they can be analyzed, and how this can contribute to the designing of fatigue resistant structures and to prevent structural fatigue problems in service. Chapter 1 gives a general survey of the topic with brief comments on the signi?cance of the aspects involved. This serves as a kind of a program for the following chapters. The central issues in this book are predictions of fatigue properties and designing against fatigue. These objectives cannot be realized without a physical and mechanical understanding of all relevant conditions. In Chapter 2 the book starts with basic concepts of what happens in the material of a structure under cyclic loads. It illustrates the large number of variables which can affect fatigue properties and it provides the essential background knowledge for subsequent chapters. Different subjects are presented in the following main parts: • Basic chapters on fatigue properties and predictions (Chapters 2–8) • Load spectra and fatigue under variable-amplitude loading (Chapters 9–11) • Fatigue tests and scatter (Chapters 12 and 13) • Special fatigue conditions (Chapters 14–17) • Fatigue of joints and structures (Chapters 18–20) • Fiber-metal laminates (Chapter 21) Each chapter presents a discussion of a speci?c subject.
Author: John M. Potter
Publisher: ASTM International
Published: 1989
Total Pages: 242
ISBN-13: 0803111851
DOWNLOAD EBOOK →Author: Peter C. McKeighan
Publisher: ASTM International
Published: 2005
Total Pages: 588
ISBN-13: 0803134797
DOWNLOAD EBOOK →Author: F. J. Giessler
Publisher:
Published: 1983
Total Pages: 146
ISBN-13:
DOWNLOAD EBOOK →An analytical and experimental program was conducted to evaluate the crack growth gage concept for application as an individual aircraft tracking device. Three gage designs were evaluated. Volume I discusses the evaluation of two versions of a stepped thickness gage and a stepped width gage. Volume II discusses the evaluation of a side-grooved constant thickness gage. An analytical evaluation of the change in transfer function corresponding to gage design parameter changes was performed to determine the configuration of the gages to be tested. Initial spectrum tests were conducted on the first stepped gage design to determine the ranking ability of the gage. Then constant amplitude tests were conducted on the second stepped gage design. A modification of the gage was made to improve spectrum test response. The modified gage was subjected to both constant amplitude testing and spectrum testing. The analytically derived crack growth rates were compared to the test data. In general, the analysis predicted slightly higher growth rates than observed.
Author: Steven E. Kinyon
Publisher: ASTM International
Published: 2003
Total Pages: 445
ISBN-13: 0803134568
DOWNLOAD EBOOK →Contains 29 contributions drawn from the Third International Symposium on Fretting Fatigue held in Nagaoka, Japan in May 2001. Sections of the volume address fretting wear and crack initiation; fretting fatigue crack and damage; life prediction; fretting fatigue parameter effects; loading condition
Author: George C. Sih
Publisher: Springer Science & Business Media
Published: 2008-06-01
Total Pages: 386
ISBN-13: 1402085206
DOWNLOAD EBOOK →What can be added to the fracture mechanics of metal fatigue that has not already been said since the 1900s? From the view point of the material and structure engineer, there are many aspects of failure by fatigue that are in need of attention, particularly when the size and time of the working components are changed by orders of magnitude from those considered by st traditional means. The 21 century marks an era of technology transition where structures are made larger and devices are made smaller, rendering the method of destructive testing unpractical. While health monitoring entered the field of science and engineering, the practitioners are discovering that the correlation between the signal and the location of interest depends on a priori knowledge of where failure may initiate. This information is not easy to find because the integrity of the physical system will change with time. Required is software that can self-adjust in time according to the monitored data. In this connection, effective application of health monitoring can use a predictive model of fatigue crack growth. Earlier fatigue crack growth models assumed functional dependence on the maximum stress and the size of the pre-existing crack or defect. Various possibilities were examined in the hope that the data could be grouped such that linear interpolation would apply.