Author: Michael Alan FosterPublisher:
ISBN:
Category :
Languages : en
Pages : 224
Book Description
An Investigation of the Fatigue Crack Growth and Fracture Behavior of Ti-6Al-4V
Author: Michael Alan FosterMultiaxial Fatigue
Author: Darrell SociePublisher: SAE International
ISBN: 0768065100
Category : Technology & Engineering
Languages : en
Pages : 510
Book Description
This book provides practicing engineers, researchers, and students with a working knowledge of the fatigue design process and models under multiaxial states of stress and strain. Readers are introduced to the important considerations of multiaxial fatigue that differentiate it from uniaxial fatigue.
Random-Loading Fatigue Crack Growth Behavior of Some Aluminum and Titanium Alloys
Author: S. H. SmithPublisher:
ISBN:
Category : Airframes
Languages : en
Pages : 27
Book Description
This paper presents the results of an experimental investigation of the fatigue crack growth characteristics of some airframe materials under sinusoidal, narrow-band, and broad-band random loadings. Prerecorded random-time histories, generated by filtering the output of a white-noise generator to produce desired power spectral shapes, were utilized as input loadings to an electrohydraulic fatigue crack growth testing system. Uniform tension-tension loadings were applied to centrally cracked panels, and the fatigue crack growth behavior was observed. Alloys studied include 7075-T6 bare aluminum alloy, 2024-T3 bare aluminum alloy, Ti-8Al-1Mo-1V duplex and mill anneal, and Ti-6Al-4V mill anneal. Fracture-mechanics concepts are applied in correlating and comparing the fatigue crack growth behavior of the alloys. A comparison of sinusoidal- and random-loading behavior, based on the average of the greatest rise or fall in stress intensity between mean-level crossings, shows a faster fatigue crack growth rate for sinusoidal loading at the higher stress-intensity levels and a slower rate at the lower stress-intensity levels.
Fatigue and Fracture Mechanics
Author: Tina Louise PanontinPublisher: ASTM International
ISBN: 0803124864
Category : Fatigue
Languages : en
Pages : 922
Book Description
Fatigue Crack Growth and Crack Closure Behavior of Ti-6Al-4V Alloy Under Variable-Amplitude Loadings
Author: M. JonoPublisher:
ISBN:
Category : Crack closure
Languages : en
Pages : 20
Book Description
Fatigue crack growth tests under constant-amplitude and repeated two-step loadings were carried out on a (? + ?) Ti-6Al-4V alloy which has duplex structure made up of equiaxed primary ?-phase grains with a discontinuous fine ?-phase dispersed in the boundaries. It was found that fatigue crack grew along ?-phase grain boundaries and that the fracture surface was very rough in the low stress intensity region under constant-amplitude loading. On the other hand, in the high region, transgranular crack growth was observed and the fracture surface was relatively smooth. The crack opening point, Kop, was affected by the amplitude of low-level load, ?KL, under repeated two-step loadings where the high-level load amplitude was kept constant. Kop was found to be higher than that predicted by Kop -- Kmax relationship under constant-amplitude loading and the fracture surface was rougher in comparison with that under constant-amplitude loading which has the identical stress intensity range. It was concluded that the crack opening point was controlled by both plasticity-induced crack closure in terms ofKmax and roughness-induced crack closure resulted from rougher surface in ?KL.
Proceedings of the 13th World Conference on Titanium
Author: Vasisht VenkateshPublisher: John Wiley & Sons
ISBN: 1119296110
Category : Technology & Engineering
Languages : en
Pages : 4024
Book Description
This book contains the Proceedings of the 13th World Conference on Titanium.
Load Interaction Effects on Fatigue Crack Growth in Ti-6Al-4V Alloy
Author: Robert Peh-ying WeiPublisher:
ISBN:
Category : Axial loads
Languages : en
Pages : 36
Book Description
The importance of delay, retardation in the rate of fatigue crack growth, produced by load interactions in variable amplitude loading, on the accurate prediction of fatigue lives of engineering structures is discussed. The effects of a broad range of loading variables on delay in fatigue crack growth at room temperature are examined for a mill annealed Ti-6Al-4V alloy. The results are used to estimate crack growth behavior under programmed loads.
Characterization of Fatigue Crack Initiation and Propagation in Ti-6Al-4V with Electrical Potential Drop Technique
Author: Mixed-mode Fatigue-crack Growth in Ti-6A1-4V
Author: Josh Patrick CampbellPublisher:
ISBN:
Category :
Languages : en
Pages : 384
Book Description
Small Fatigue Cracks
Author: K.S. RavichandranPublisher: Elsevier
ISBN: 0080569706
Category : Technology & Engineering
Languages : en
Pages : 511
Book Description
This book contains the fully peer-reviewed papers presented at the Third Engineering Foundation Conference on Small Fatigue Cracks, held under the chairmanship of K.S. Ravichandran and Y. Murakami during December 6-11, 1998, at the Turtle Bay Hilton, Oahu, Hawaii. This book presents a state-of-the-art description of the mechanics, mechanisms and applications of small fatigue cracks by most of the world's leading experts in this field. Topics ranging from the mechanisms of crack initiation, small crack behavior in metallic, intermetallic, ceramic and composite materials, experimental measurement, mechanistic and theoretical models, to the role of small cracks in fretting fatigue and the application of small crack results to the aging aircraft and high-cycle fatigue problems, are covered.