Nondestructive and Semidestructive Methods for Residual Stress Measurement - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Nondestructive and Semidestructive Methods for Residual Stress Measurement write by CO. Ruud. This book was released on 1982. Nondestructive and Semidestructive Methods for Residual Stress Measurement available in PDF, EPUB and Kindle. The effect of residual stresses on the fatigue life in metallic components has long been recognized. However, the most commonly employed methods for its measurement are destructive or at least partially so. This has led to an active interest in nondestructive methods for residual stress measurement. A review and evaluation has recently been published that describes the essence of the principles of nearly all the applied and proposed methods for nondestructive and semidestructive residual stress measurement. This review is summarized herein.
Residual Stress Effects in Fatigue
Residual Stress Effects in Fatigue - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Residual Stress Effects in Fatigue write by H. S. Reemsnyder. This book was released on 1982. Residual Stress Effects in Fatigue available in PDF, EPUB and Kindle.
Non-destructive and Semi-destructive Methods for Thermal Stress Measurement in the Continuous Welded Rails
Non-destructive and Semi-destructive Methods for Thermal Stress Measurement in the Continuous Welded Rails - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Non-destructive and Semi-destructive Methods for Thermal Stress Measurement in the Continuous Welded Rails write by Xuan Zhu. This book was released on 2016. Non-destructive and Semi-destructive Methods for Thermal Stress Measurement in the Continuous Welded Rails available in PDF, EPUB and Kindle. In-situ stress determination in structures under environmental variability without a reference value is a challenging experimental mechanics task. One potential application of this task is the management of longitudinal loads in railroad structures: the absence of expansion joints in Continuous Welded Rail (CWR) has created the need for the railroad industry to determine the in-situ thermal stress levels for rail buckling and breakage prevention. This dissertation examines the potentials of a nondestructive method, namely Electro-Mechanical Impedance (EMI) method, and a semi-destructive method, the hole-drilling test procedure, to provide an estimation of axial stress in bar-like structures. The EMI method is completely non-destructive, as it simply involves bonding a piezoelectric element on the host structure and measuring the electrical admittance signature of the PZT-structure assembly in selected frequency bands. This non-invasive method features the easiness of implementation and interpretation, while it is notoriously known for being vulnerable to environmental variability. A comprehensive analytical model is proposed to relate the measured electric admittance signatures to uniaxial applied stress and temperature, respectively, as functions of relevant parameters of the EMI monitoring system. The model results compare favorably to the experimental ones, where the sensitivities of features extracted from the admittance signatures to the varying stress levels and temperatures are determined. The temperature compensation algorithms are proposed, and the final results illustrate that the frameworks are capable to eliminate the temperature effect and highlight the ones from thermal stress. On the other hand, the semi-destructive hole-drilling method is explored as a possible solution for thermal stress measurement. A new set of calibration coefficients to compute the stress field relieved by fine hole depth increments required by the high strength steel was determined. The new calibration coefficients were experimentally validated on an aluminum plate subjected to a known uniaxial load. The thermal stress levels of constrained rails were estimated after compensation for the residual stress components, based on statistical relationships developed experimentally between the longitudinal and the vertical residual stresses. The results showed that the hole-drilling procedure, with appropriate calibration coefficients and residual stress compensation, can estimate the in-situ rail thermal stresses with an expected accuracy that is within the industry acceptable levels.
A review of non-destructive residual stress measurement techniques
A review of non-destructive residual stress measurement techniques - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook A review of non-destructive residual stress measurement techniques write by D. M. Finch. This book was released on 1994. A review of non-destructive residual stress measurement techniques available in PDF, EPUB and Kindle. This report provides a comprehensive review of techniques and applications of quantitative non-destructive and semi-destructive determination of residual stresses in metallic components.
Practical Residual Stress Measurement Methods
Practical Residual Stress Measurement Methods - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Practical Residual Stress Measurement Methods write by Gary S. Schajer. This book was released on 2013-09-23. Practical Residual Stress Measurement Methods available in PDF, EPUB and Kindle. An introductory and intermediate level handbook written in pragmatic style to explain residual stresses and to provide straightforward guidance about practical measurement methods. Residual stresses play major roles in engineering structures, with highly beneficial effects when designed well, and catastrophic effects when ignored. With ever-increasing concern for product performance and reliability, there is an urgent need for a renewed assessment of traditional and modern measurement techniques. Success critically depends on being able to make the most practical and effective choice of measurement method for a given application. Practical Residual Stress Measurement Methods provides the reader with the information needed to understand key residual stress concepts and to make informed technical decisions about optimal choice of measurement technique. Each chapter, written by invited specialists, follows a focused and pragmatic format, with subsections describing the measurement principle, residual stress evaluation, practical measurement procedures, example applications, references and further reading. The chapter authors represent both international academia and industry. Each of them brings to their writing substantial hands-on experience and expertise in their chosen field. Fully illustrated throughout, the book provides a much-needed practical approach to residual stress measurements. The material presented is essential reading for industrial practitioners, academic researchers and interested students. Key features: • Presents an overview of the principal residual stress measurement methods, both destructive and non-destructive, with coverage of new techniques and modern enhancements of established techniques • Includes stand-alone chapters, each with its own figures, tables and list of references, and written by an invited team of international specialists
