Fatigue Crack Growth Behavior Of Four High Strength Steels In Two Humid Environments

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Fatigue Crack Growth Behavior of Four High Strength Steels in Two Humid Environments

Author : C. E. Neu
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Fatigue Crack Growth Behavior of Four High Strength Steels in Two Humid Environments by : C. E. Neu

Download or read book Fatigue Crack Growth Behavior of Four High Strength Steels in Two Humid Environments written by C. E. Neu and published by . This book was released on 1971 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue crack growth rates (da/dN) as a function of applied stress intensity amplitude (delta K) were determined for four high strength steels (HP 9-4-.45, 18% Ni marage 250, D6Ac, AISI 4340) in air at 10 percent and at 80 percent relative humidities (R.H.). All four steels demonstrated sensitivity to high humidity with crack growth rates in 80 percent R.H. air being one and one-half to two times as high as in 10 percent R.H. air. Overall crack growth rates of three steels, HP 9-4-.45, 18% Ni marage 250, and D6Ac, were similar, while rates for AISI 4340 were uniformly higher than those of the other three steels. (Author).

Fracture and Fatigue Control in Structures

Author : Stanley Theodore Rolfe
Publisher : ASTM International
ISBN 13 :
Total Pages : 527 pages
Book Rating : 4./5 ( download)

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Book Synopsis Fracture and Fatigue Control in Structures by : Stanley Theodore Rolfe

Download or read book Fracture and Fatigue Control in Structures written by Stanley Theodore Rolfe and published by ASTM International. This book was released on 1977 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emphasizes applications of fracture mechanics to prevent fracture and fatigue failures in structures, rather than the theoretical aspects of fracture mechanics. The concepts of driving force and resistance force are used to differentiate between the mathematical side and the materials side. Case studies of actual failures are new to the third edition. Annotation copyrighted by Book News, Inc., Portland, OR

Scientific and Technical Aerospace Reports

Author :
Publisher :
ISBN 13 :
Total Pages : 268 pages
Book Rating : 4.:/5 (3 download)

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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 1988 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Comparison of Environmentally-influenced Near-threshold Fatigue-crack-growth Behavior in High- and Lower-strength Steels at Conventional Frequencies

Download Comparison of Environmentally-influenced Near-threshold Fatigue-crack-growth Behavior in High- and Lower-strength Steels at Conventional Frequencies PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis Comparison of Environmentally-influenced Near-threshold Fatigue-crack-growth Behavior in High- and Lower-strength Steels at Conventional Frequencies by :

Download or read book Comparison of Environmentally-influenced Near-threshold Fatigue-crack-growth Behavior in High- and Lower-strength Steels at Conventional Frequencies written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies in a wide variety of steels, of yield strengths ranging from 290 to 1740 MPa, have indicated that environmental influences on corrosion fatigue crack propagation at near-threshold levels (growth rates below approx. 10/sup -6/ mm/cycle), may be markedly different from those at higher growth rates. In this paper, the effect of such environments, specifically dry gaseous hydrogen and moist room air, on near-threshold cyclic crack growth is reviewed and comparisons made between behavior in high and lower strength steels. It is shown that, in lower strength steels (yield strength less than or equal to 700 MPa), near-threshold growth rates in dry hydrogen exceed those in moist air by up to two orders of magnitude at low load ratios only, whereas for steels of strength levels above approx. 700 MPa, the presence of hydrogen results in lower near-threshold growth rates compared to moist air regardless of load ratio. Such behavior is rationalized in terms of the competing effects of hydrogen embrittlement and oxide-induced crack closure mechanisms.

Aerospace Structural Metals Handbook

Author :
Publisher :
ISBN 13 :
Total Pages : 778 pages
Book Rating : 4.:/5 (327 download)

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Book Synopsis Aerospace Structural Metals Handbook by :

Download or read book Aerospace Structural Metals Handbook written by and published by . This book was released on 1989 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Effect of Environment on Fatigue Crack Propagation in 4340 Steel

Author : Roger Charles Rowlands
Publisher :
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis The Effect of Environment on Fatigue Crack Propagation in 4340 Steel by : Roger Charles Rowlands

Download or read book The Effect of Environment on Fatigue Crack Propagation in 4340 Steel written by Roger Charles Rowlands and published by . This book was released on 1972 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fatigue Crack Growth Behavior of a High-Strength Steel

Author : Maurice F. Amateau
Publisher :
ISBN 13 :
Total Pages : 89 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Fatigue Crack Growth Behavior of a High-Strength Steel by : Maurice F. Amateau

Download or read book Fatigue Crack Growth Behavior of a High-Strength Steel written by Maurice F. Amateau and published by . This book was released on 1971 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue crack growth behavior of high-strength Ladish D6AC steel was examined under various conditions of frequency, environment, temperature, stress ratio, and stress intensity history. Materials with fracture toughness ranging from 50 to 100 ksi/sq. in., but with the same yield strength of 220 ksi, were examined. Variations in fracture thoughness do not have a strong effect on crack growth rate at stress intensity levels within the log-linear portion of the crack growth curves. Different environments, such as dry air, laboratory air, and distilled water, were found to produce different fatigue crack growth behavior at 1 Hz but not at 10 Hz loading frequency. The lowest crack growth rate occurred in dry air, while the aggressive environment of distilled water affected the crack growth rate more severly at lower stress intensity levels. The effects of temperature over the range from -40 to 175F are a uniform shift of the growth curve to low crack growth rates and a lowering of the stress intensity level for the onset of rapid fatigue crack propagation. Suppression of crack growth rate following high prior stress cycles is the most significant effect of stress history. This effect cannot be explained in terms of the relative plastic zone sizes alone. (Author).

Applied Mechanics Reviews

Author :
Publisher :
ISBN 13 :
Total Pages : 276 pages
Book Rating : 4.:/5 (26 download)

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Book Synopsis Applied Mechanics Reviews by :

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1974 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Comprehensive Structural Integrity

Author : Ian Milne
Publisher : Elsevier
ISBN 13 : 0080490735
Total Pages : 4647 pages
Book Rating : 4.0/5 (84 download)

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Book Synopsis Comprehensive Structural Integrity by : Ian Milne

Download or read book Comprehensive Structural Integrity written by Ian Milne and published by Elsevier. This book was released on 2003-07-25 with total page 4647 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this major reference work is to provide a first point of entry to the literature for the researchers in any field relating to structural integrity in the form of a definitive research/reference tool which links the various sub-disciplines that comprise the whole of structural integrity. Special emphasis will be given to the interaction between mechanics and materials and structural integrity applications. Because of the interdisciplinary and applied nature of the work, it will be of interest to mechanical engineers and materials scientists from both academic and industrial backgrounds including bioengineering, interface engineering and nanotechnology. The scope of this work encompasses, but is not restricted to: fracture mechanics, fatigue, creep, materials, dynamics, environmental degradation, numerical methods, failure mechanisms and damage mechanics, interfacial fracture and nano-technology, structural analysis, surface behaviour and heart valves. The structures under consideration include: pressure vessels and piping, off-shore structures, gas installations and pipelines, chemical plants, aircraft, railways, bridges, plates and shells, electronic circuits, interfaces, nanotechnology, artificial organs, biomaterial prostheses, cast structures, mining... and more. Case studies will form an integral part of the work.

Energy Research Abstracts

Author :
Publisher :
ISBN 13 :
Total Pages : 660 pages
Book Rating : 4.:/5 (3 download)

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Book Synopsis Energy Research Abstracts by :

Download or read book Energy Research Abstracts written by and published by . This book was released on 1985 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Report of NRL Progress

Author : Naval Research Laboratory (U.S.)
Publisher :
ISBN 13 :
Total Pages : 148 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Report of NRL Progress by : Naval Research Laboratory (U.S.)

Download or read book Report of NRL Progress written by Naval Research Laboratory (U.S.) and published by . This book was released on 1970 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fracture Mechanics:fourteenth Symposium Volume 1: Theory and Analysis

Author :
Publisher : ASTM International
ISBN 13 :
Total Pages : 615 pages
Book Rating : 4./5 ( download)

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Book Synopsis Fracture Mechanics:fourteenth Symposium Volume 1: Theory and Analysis by :

Download or read book Fracture Mechanics:fourteenth Symposium Volume 1: Theory and Analysis written by and published by ASTM International. This book was released on with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Properties of High-strength Steels for High-pressure Containments

Author : Edward G. Nisbett
Publisher :
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis Properties of High-strength Steels for High-pressure Containments by : Edward G. Nisbett

Download or read book Properties of High-strength Steels for High-pressure Containments written by Edward G. Nisbett and published by . This book was released on 1986 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Atlas of Fatigue Curves

Author : Howard E. Boyer
Publisher : ASM International
ISBN 13 : 9780871702142
Total Pages : 544 pages
Book Rating : 4.7/5 (21 download)

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Book Synopsis Atlas of Fatigue Curves by : Howard E. Boyer

Download or read book Atlas of Fatigue Curves written by Howard E. Boyer and published by ASM International. This book was released on 1985-12-31 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Corrosion Resistance of Aluminum and Magnesium Alloys

Author : Edward Ghali
Publisher : John Wiley & Sons
ISBN 13 : 0470531762
Total Pages : 744 pages
Book Rating : 4.4/5 (75 download)

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Book Synopsis Corrosion Resistance of Aluminum and Magnesium Alloys by : Edward Ghali

Download or read book Corrosion Resistance of Aluminum and Magnesium Alloys written by Edward Ghali and published by John Wiley & Sons. This book was released on 2010-05-05 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: Valuable information on corrosion fundamentals and applications of aluminum and magnesium Aluminum and magnesium alloys are receiving increased attention due to their light weight, abundance, and resistance to corrosion. In particular, when used in automobile manufacturing, these alloys promise reduced car weights, lower fuel consumption, and resulting environmental benefits. Meeting the need for a single source on this subject, Corrosion Resistance of Aluminum and Magnesium Alloys gives scientists, engineers, and students a one-stop reference for understanding both the corrosion fundamentals and applications relevant to these important light metals. Written by a world leader in the field, the text considers corrosion phenomena for the two metals in a systematic and parallel fashion. The coverage includes: The essentials of corrosion for aqueous, high temperature corrosion, and active-passive behavior of aluminum and magnesium alloys The performance and corrosion forms of aluminum alloys The performance and corrosion forms of magnesium alloys Corrosion prevention methods such as coatings for aluminum and magnesium Electrochemical methods of corrosion investigation and their application to aluminum and magnesium alloys Offering case studies and detailed references, Corrosion Resistance of Aluminum and Magnesium Alloys provides an essential, up-to-date resource for graduate-level study, as well as a working reference for professionals using aluminum, magnesium, and their alloys.

Influences of Gaseous Environment on Low Growth-rate Fatigue Crack Propagation in Steels. Annual Report No. 1, January 1980. Report No. FPL/R/80/1030

Download Influences of Gaseous Environment on Low Growth-rate Fatigue Crack Propagation in Steels. Annual Report No. 1, January 1980. Report No. FPL/R/80/1030 PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis Influences of Gaseous Environment on Low Growth-rate Fatigue Crack Propagation in Steels. Annual Report No. 1, January 1980. Report No. FPL/R/80/1030 by :

Download or read book Influences of Gaseous Environment on Low Growth-rate Fatigue Crack Propagation in Steels. Annual Report No. 1, January 1980. Report No. FPL/R/80/1030 written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The influence of gaseous environment is examined on fatigue crack propagation behavior in steels. Specifically, a fully martensitic 300-M ultrahigh strength steel and a fully bainitic 2-1/4Cr-1Mo lower strength steel are investigated in environments of ambient temperature moist air and low pressure dehumidified hydrogen and argon gases over a wide range of growth rates from 10−8 to 10−2 mm/cycle, with particular emphasis given to behavior near the crack propagation threshold .delta.K0. It is found that two distinct growth rate regimes exist where hydrogen can markedly accelerate crack propagation rates compared to air, (1) at near-threshold levels below (5 x 10−6 mm/cycle) and (2) at higher growth rates, typically around 10−5 mm/cycle above a critical maximum stress intensity K/sub max//sup T/. Hydrogen-assisted crack propagation at higher growth rates is attributed to a hydrogen embrittlement mechanism, with K/sub max//sup T/ nominally equal to K/sub Iscc/ (the sustained load stress corrosion threshold) in high strength steels, and far below K/sub Iscc/ in the strain-rate sensitive lower strength steels. Hydrogen-assisted crack propagation at near-threshold levels is attributed to a new mechanism involving fretting-oxide-induced crack closure generated in moist (or oxygenated) environments. The absence of hydrogen embrittlement mechanisms at near-threshold levels is supported by tests showing that .delta.K0 values in dry gaseous argon are similar to .delta.K0 values in hydrogen. The potential ramifications of these results are examined in detail.

Mixed Mode Fatigue Crack Growth Behavior in a High-Strength Steel

Author : RE. Link
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Mixed Mode Fatigue Crack Growth Behavior in a High-Strength Steel by : RE. Link

Download or read book Mixed Mode Fatigue Crack Growth Behavior in a High-Strength Steel written by RE. Link and published by . This book was released on 1993 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most of the currently available methods for predicting fatigue crack growth in structures do not consider effects due to mixed-mode loading. This is partly due to the limited information available concerning the fatigue crack growth under mixed mode loading. Previous investigations of mixed mode effects on fatigue crack growth have shown that under combined opening and in-plane shear loading, the cracks turn abruptly so that the in-plane shear mode is eliminated [1-3]. Very little data are generated before the crack curvature eliminates the mixed mode loading. The changing orientation of the crack during the test makes analysis of the problem difficult and may cloud the intrinsic fatigue crack growth rate behavior under mixed mode loading. Situations can exist in engineering structures in which cracks may grow in a self-similar manner even under the influence of mixed mode loading. Examples of such situations are radial cracks in bearing races [4] and transverse cracks in rotating shafts under shear and bending loads. The cracks may not change orientation because the in-plane shear component is fully reversed. It is necessary to understand the effects of mixed mode loading on fatigue crack growth in order to properly predict the behavior of these components.