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Author : James Robert Wilcox
Release : 1990
Genre :
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis Inelastic Deformation and Fatigue Damage in Metals at High Homologous Temperatures by : James Robert Wilcox
Download or read book Inelastic Deformation and Fatigue Damage in Metals at High Homologous Temperatures written by James Robert Wilcox. This book was released on 1990. Available in PDF, EPUB and Kindle. Book excerpt:
Author : S. S. Manson
Release : 2009
Genre : Science
Kind : eBook
Book Rating : 549/5 ( reviews)
Book Synopsis Fatigue and Durability of Metals at High Temperatures by : S. S. Manson
Download or read book Fatigue and Durability of Metals at High Temperatures written by S. S. Manson. This book was released on 2009. Available in PDF, EPUB and Kindle. Book excerpt: From concept to application, this book describes the method of strain-range partitioning for analyzing time-dependent fatigue. Creep (time-dependent) deformation is first introduced for monotonic and cyclic loading. Multiple chapters then discuss strain-range partitioning in details for multi-axial loading conditions and how different loading permutations can lead to different micro-mechanistic effects. Notably, the total-strain method of strain-range partitioning (SRP) is described, which is a methodology that sees use in several industries. Examples from aerospace illustrate applications, and methods for predicting time-dependent metal fatigue are critiqued.
Author :
Release : 1992
Genre :
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis Inelastic Deformation and Damage at High Temperature by :
Download or read book Inelastic Deformation and Damage at High Temperature written by . This book was released on 1992. Available in PDF, EPUB and Kindle. Book excerpt: Combined experimental and theoretical investigations into the inelastic deformation and damage behavior of engineering alloys at elevated temperatures are being pursued. The analysis of previously performed strain rate change and relaxation tests on modified 9Cr-1Mo steel showed the need for inclusion of a recovery of state term in the growth laws for the state variables of the viscoplasticity theory based on overstress (VBO). Recovery of state terms were introduced and the experimental results were satisfactorily simulated. The finite deformation theory of VBO has been developed further to include a convected derivative rationale for the choice of the objective stress rate. The reversing direct current voltage drop measurements during low cycle fatigue at elevated temperature were improved. A passive filter bank and new positioning devices for the coils were installed. Tests at 650°C and lasting several days showed excessive, uncontrollable temperature changes. It was decided to drop the test temperature to 538°C which is close to the operating temperature of Type 304 Stainless Steel. The temperature fluctuations in torsion tests were within {plus minus}3°C which was considered satisfactory. Testing will continue at 538°C.
Author : Ravichandran Subrahmanyan
Release : 1990
Genre :
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis A Damage Integral Approach for Low-cycle Isothermal and Thermal Fatigue by : Ravichandran Subrahmanyan
Download or read book A Damage Integral Approach for Low-cycle Isothermal and Thermal Fatigue written by Ravichandran Subrahmanyan. This book was released on 1990. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Release : 1992
Genre :
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis Inelastic Deformation and Damage at High Temperature. Progress Report, April 1, 1991--March 31, 1992 by :
Download or read book Inelastic Deformation and Damage at High Temperature. Progress Report, April 1, 1991--March 31, 1992 written by . This book was released on 1992. Available in PDF, EPUB and Kindle. Book excerpt: Combined experimental and theoretical investigations into the inelastic deformation and damage behavior of engineering alloys at elevated temperatures are being pursued. The analysis of previously performed strain rate change and relaxation tests on modified 9Cr-1Mo steel showed the need for inclusion of a recovery of state term in the growth laws for the state variables of the viscoplasticity theory based on overstress (VBO). Recovery of state terms were introduced and the experimental results were satisfactorily simulated. The finite deformation theory of VBO has been developed further to include a convected derivative rationale for the choice of the objective stress rate. The reversing direct current voltage drop measurements during low cycle fatigue at elevated temperature were improved. A passive filter bank and new positioning devices for the coils were installed. Tests at 650°C and lasting several days showed excessive, uncontrollable temperature changes. It was decided to drop the test temperature to 538°C which is close to the operating temperature of Type 304 Stainless Steel. The temperature fluctuations in torsion tests were within ±3°C which was considered satisfactory. Testing will continue at 538°C.
