Effect of Frequency on Fatigue Crack Growth Rate of Inconel 718 at High Temperature PDF Download
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Author: Tusit Weerasooriya
Publisher:
ISBN:
Category : Inconel
Languages : en
Pages : 0
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Book Description
Author: Tusit Weerasooriya
Publisher:
ISBN:
Category : Inconel
Languages : en
Pages : 0
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Fatigue crack growth was studied at 650 deg. C as a function of frequency for several ratios of minimum-to-maximum stress intensity, and for two values of maximum stress intensity factor. Crack lengths were monitored at low frequencies from compliance calculations based on crack mouth opening displacement measurements. At higher frequencies, crack length was measured using a d.c. electric potential system. It was found that fatigue crack growth rate can be characterized in three distinct frequency regions. These three regions represent fully cycle dependent, mixed, and fully time dependent crack growth behavior and each region can be modeled by a power law function. Observation of micro mechanisms support the existence of these three different regions of crack growth. Keywords: Fatigue crack growth, Time dependent growth, Cyclic-dependent growth, Nickel base superalloy, Crack growth rate model, Frequency effects.
Author: Tusit Weerasooriya
Publisher:
ISBN:
Category : Inconel
Languages : en
Pages : 36
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Book Description
Fatigue crack growth was studied at 650 deg. C as a function of frequency for several ratios of minimum-to-maximum stress intensity, and for two values of maximum stress intensity factor. Crack lengths were monitored at low frequencies from compliance calculations based on crack mouth opening displacement measurements. At higher frequencies, crack length was measured using a d.c. electric potential system. It was found that fatigue crack growth rate can be characterized in three distinct frequency regions. These three regions represent fully cycle dependent, mixed, and fully time dependent crack growth behavior and each region can be modeled by a power law function. Observation of micro mechanisms support the existence of these three different regions of crack growth. Keywords: Fatigue crack growth, Time dependent growth, Cyclic-dependent growth, Nickel base superalloy, Crack growth rate model, Frequency effects.
Author: Howard E. Boyer
Publisher: ASM International
ISBN: 9780871702142
Category : Technology & Engineering
Languages : en
Pages : 544
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Book Description
Contains more than 500 fatigue curves for industrial ferrous and nonferrous alloys. Also includes an explanation of fatigue testing and interpretation of test results. Each curve is presented independently and includes an explanation of its particular importance.
Author: Thomas A. Cruse
Publisher: ASTM International
ISBN: 0803109725
Category : Fracture mechanics
Languages : en
Pages : 936
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
The techniques of linear-elastic fracture mechanics were used to characterize the effect of several variables (temperature, environment, cyclic frequency, stress ratio, and heat-treatment variations) upon the fatigue-crack growth behavior of Inconel 718 base metal and weldments. Relevant crack growth data on this alloy from other laboratories is also presented. (33 fig, 39 references) (auth).
Author: C. Moura Branco
Publisher: Springer Science & Business Media
ISBN: 9780792341130
Category : Science
Languages : en
Pages : 758
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Book Description
This volume contains the edited version of lectures and selected research contributions presented at the NATO ADVANCED STUDY INSTITUTE on MECHANICAL BEHA VI OUR OF MATERIALS AT HIGH TEMPERATURE, held in Sesimbra, Portugal, 12th-22nd September 1995, and organized by 1ST-Lisbon Institute of Technology, PortugaL The Institute was attended by 88 participants, including 15 lecturers from 17 countries including five CP countries. The lecturers were leading scientists and technologists from universities, research institutions and industry. The students were mainly young PhD students and junior academic or research staff with postgraduate qualifications (MSc or PhD). Fourteen students were from the five CP countries. The students presented research papers or posters during the Institute reporting the current progress of their research projects. A total of thirty three lectures, ten research papers and fifty posters were presented. This book does not contain the poster presentations and seven research papers were selected for publication. All the sessions were very active and quite extensive discussions on scientific aspects took place during the Institute. The Advanced Study Institute provided a forum for interaction among scientists and engineers from different areas of research, and young researchers.
Author: The Minerals, Metals & Materials Society
Publisher: Springer
ISBN: 3319725262
Category : Technology & Engineering
Languages : en
Pages : 898
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Book Description
This collection features papers presented at the 147th Annual Meeting & Exhibition of The Minerals, Metals & Materials Society.
Author: C. M. Hudson
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 36
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Book Description
Author: W. Bessler
Publisher:
ISBN:
Category : Crack propagation
Languages : en
Pages : 16
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Book Description
The effect of a loading profile containing a high frequency (200 Hz) loading component superimposed on a low frequency (~0.05 to 0.5 Hz) loading component on fatigue crack growth of Inconel 718 at 650°C was investigated. The high frequency sinusoidal loading was added during the upper level hold period of the low frequency trapezoidal waveform.
