Fracture and Fatigue Emanating from Stress Concentrators

Fracture and Fatigue Emanating from Stress Concentrators PDF Author: G. Pluvinage
Publisher: Springer Science & Business Media
ISBN: 1402026129
Category : Technology & Engineering
Languages : en
Pages : 238

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Book Description
A vast majority of failures emanate from stress concentrators such as geometrical discontinuities. The role of stress concentration was first highlighted by Inglis (1912) who gives a stress concentration factor for an elliptical defect, and later by Neuber (1936). With the progress in computing, it is now possible to compute the real stress distribution at a notch tip. This distribution is not simple, but looks like pseudo-singularity as in principle the power dependence with distance remains. This distribution is governed by the notch stress intensity factor which is the basis of Notch Fracture Mechanics. Notch Fracture Mechanics is associated with the volumetric method which postulates that fracture requires a physical volume. Since fatigue also needs a physical process volume, Notch Fracture Mechanics can easily be extended to fatigue emanating from a stress concentration.

Fracture and Fatigue Emanating from Stress Concentrators

Fracture and Fatigue Emanating from Stress Concentrators PDF Author: G. Pluvinage
Publisher: Springer Science & Business Media
ISBN: 1402026129
Category : Technology & Engineering
Languages : en
Pages : 238

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Book Description
A vast majority of failures emanate from stress concentrators such as geometrical discontinuities. The role of stress concentration was first highlighted by Inglis (1912) who gives a stress concentration factor for an elliptical defect, and later by Neuber (1936). With the progress in computing, it is now possible to compute the real stress distribution at a notch tip. This distribution is not simple, but looks like pseudo-singularity as in principle the power dependence with distance remains. This distribution is governed by the notch stress intensity factor which is the basis of Notch Fracture Mechanics. Notch Fracture Mechanics is associated with the volumetric method which postulates that fracture requires a physical volume. Since fatigue also needs a physical process volume, Notch Fracture Mechanics can easily be extended to fatigue emanating from a stress concentration.

Stress Concentration at Notches

Stress Concentration at Notches PDF Author: Mykhaylo P. Savruk
Publisher: Springer
ISBN: 3319445553
Category : Technology & Engineering
Languages : en
Pages : 510

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Book Description
This book compiles solutions of linear theory of elasticity problems for isotropic and anisotropic bodies with sharp and rounded notches. It contains an overview of established and recent achievements, and presents the authors’ original solutions in the field considered with extensive discussion. The volume demonstrates through numerous, useful examples the effectiveness of singular integral equations for obtaining exact solutions of boundary problems of the theory of elasticity for bodies with cracks and notches. Incorporating analytical and numerical solutions of the problems of stress concentrations in solid bodies with crack-like defects, this volume is ideal for scientists and PhD students dealing with the problems of theory of elasticity and fracture mechanics.

Fracture of Nano and Engineering Materials and Structures

Fracture of Nano and Engineering Materials and Structures PDF Author: E.E. Gdoutos
Publisher: Springer Science & Business Media
ISBN: 1402049722
Category : Science
Languages : en
Pages : 1452

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Book Description
The 16th European Conference of Fracture (ECF16) was held in Greece, July, 2006. It focused on all aspects of structural integrity with the objective of improving the safety and performance of engineering structures, components, systems and their associated materials. Emphasis was given to the failure of nanostructured materials and nanostructures including micro- and nano-electromechanical systems (MEMS and NEMS).

Structural Failure Analysis and Prediction Methods for Aerospace Vehicles and Structures

Structural Failure Analysis and Prediction Methods for Aerospace Vehicles and Structures PDF Author: Sook-Ying Ho
Publisher: Bentham Science Publishers
ISBN: 1608050246
Category : Technology & Engineering
Languages : en
Pages : 194

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Book Description
This book deals with structural failure (induced by mechanical, aerodynamic, acoustic and aero-thermal, loads, etc.) of modern aerospace vehicles, in particular high-speed aircraft, solid propellant rocket systems and hypersonic flight vehicles, where structural integrity, failure prediction and service life assessment are particularly challenging, due to the increasingly more demanding mission requirements and the use of non-traditional materials, such as non-metallic composites, in their construction. Prediction of the complex loading environment seen in high-speed operation and constitutive / fracture models which can adequately describe the non-linear behaviour exhibited by advanced alloys and composite materials are critical in analyzing the non-linear structural response of modern aerospace vehicles and structures. The state-of-the-art of the different structural integrity assessment and prediction methodologies (including non-destructive structural health monitoring techniques) used for the structural design, service life assessment and failure analysis of the different types of aerospace vehicles are presented. The chapters are written by experts from aerospace / defence research organizations and academia in the fields of solid mechanics, and structural mechanics and dynamics of aircraft, rocket and hypersonic systems. The book will serve as a useful reference document containing specialist knowledge on appropriate prediction methodologies for a given circumstance and experimental data acquired from multi-national collaborative programs.

Metal Fatigue: Effects of Small Defects and Nonmetallic Inclusions

Metal Fatigue: Effects of Small Defects and Nonmetallic Inclusions PDF Author: Yukitaka Murakami
Publisher: Elsevier
ISBN: 0080496563
Category : Technology & Engineering
Languages : en
Pages : 384

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Book Description
Metal fatigue is an essential consideration for engineers and researchers who are looking at factors that cause metals to fail through stress, corrosion, etc. This is an English translation of a book originally published in Japan in 1993, with an additional two chapters on the fatigue failure of steels and the effect of surface roughness on fatigue strength. The methodology is based on important and reliable results and may be usefully applied to other fatigue problems not directly treated in this book.

Integrity of Pipelines Transporting Hydrocarbons

Integrity of Pipelines Transporting Hydrocarbons PDF Author: Gabriella Bolzon
Publisher: Springer
ISBN: 9400705883
Category : Technology & Engineering
Languages : en
Pages : 331

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Book Description
This book describes technical and practical aspects of pipeline damage. It summarizes the phenomena, mechanisms and management of pipeline corrosion in-service. The topics discussed include pipelines fracture mechanics, damage mechanisms and evolution, and pipeline integrity assessment. The concept of acceptable risk is also elucidated and the future application of new knowledge management tools is considered.

Dynamics and Control of Advanced Structures and Machines

Dynamics and Control of Advanced Structures and Machines PDF Author: Hans Irschik
Publisher: Springer Nature
ISBN: 3030793257
Category : Technology & Engineering
Languages : en
Pages : 282

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Book Description
This book presents selected contributions to the 4th International Workshop on Advanced Dynamics and Model Based Control of Structures and Machines. The workshop, which was held in Linz, Austria in September 2019, continued a series of international workshops — the Japan-Austria Joint Workshop on Mechanics and Model Based Control of Smart Materials and Structures, the Russia-Austria Joint Workshop on Advanced Dynamics and Model Based Control of Structures and Machines, and the first three editions of the International Workshop on Advanced Dynamics and Model Based Control of Structures and Machines. The chapters cover a broad spectrum of topics in the field of Advanced Structures and Machines both with respect to theoretical aspects as well as applications to contemporary engineering problems.

Problems of Fracture Mechanics and Fatigue

Problems of Fracture Mechanics and Fatigue PDF Author: E.E. Gdoutos
Publisher: Springer Science & Business Media
ISBN: 9401727740
Category : Science
Languages : en
Pages : 573

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Book Description
On Fracture Mechanics A major objective of engineering design is the determination of the geometry and dimensions of machine or structural elements and the selection of material in such a way that the elements perform their operating function in an efficient, safe and economic manner. For this reason the results of stress analysis are coupled with an appropriate failure criterion. Traditional failure criteria based on maximum stress, strain or energy density cannot adequately explain many structural failures that occurred at stress levels considerably lower than the ultimate strength of the material. On the other hand, experiments performed by Griffith in 1921 on glass fibers led to the conclusion that the strength of real materials is much smaller, typically by two orders of magnitude, than the theoretical strength. The discipline of fracture mechanics has been created in an effort to explain these phenomena. It is based on the realistic assumption that all materials contain crack-like defects from which failure initiates. Defects can exist in a material due to its composition, as second-phase particles, debonds in composites, etc. , they can be introduced into a structure during fabrication, as welds, or can be created during the service life of a component like fatigue, environment-assisted or creep cracks. Fracture mechanics studies the loading-bearing capacity of structures in the presence of initial defects. A dominant crack is usually assumed to exist.

Multiphysics Modelling and Simulation for Systems Design and Monitoring

Multiphysics Modelling and Simulation for Systems Design and Monitoring PDF Author: Mohamed Haddar
Publisher: Springer
ISBN: 3319145320
Category : Technology & Engineering
Languages : en
Pages : 551

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Book Description
This book reports on the state of the art in the field of multiphysics systems. It consists of accurately reviewed contributions to the MMSSD’2014 conference, which was held from December 17 to 19, 2004 in Hammamet, Tunisia. The different chapters, covering new theories, methods and a number of case studies, provide readers with an up-to-date picture of multiphysics modeling and simulation. They highlight the role played by high-performance computing and newly available software in promoting the study of multiphysics coupling effects, and show how these technologies can be practically implemented to bring about significant improvements in the field of design, control and monitoring of machines. In addition to providing a detailed description of the methods and their applications, the book also identifies new research issues, challenges and opportunities, thus providing researchers and practitioners with both technical information to support their daily work and a new source of inspiration for their future research.

Defects and Diffusion, Theory and Simulation

Defects and Diffusion, Theory and Simulation PDF Author: David Fisher
Publisher: Trans Tech Publications Ltd
ISBN: 3038132934
Category : Science
Languages : en
Pages : 274

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Book Description
An Annual Retrospective - I