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Saturday, May 9, 2020 | History

4 edition of Residual Stress, Fitness-For-Service and Manufacturing Processes found in the catalog.

Residual Stress, Fitness-For-Service and Manufacturing Processes

Residual Stress, Fitness-For-Service and Manufacturing Processes

Presented at the 2003 Asme Pressure Vessels and Piping Conference, Cleveland, Ohio,

  • 380 Want to read
  • 25 Currently reading

Published by American Society of Mechanical Engineers .
Written in English

    Subjects:
  • Power Resources - Nuclear,
  • Technology & Industrial Arts

  • Edition Notes

    ContributionsF. W. Brust (Editor), F. Brust (Other Contributor)
    The Physical Object
    FormatPaperback
    Number of Pages248
    ID Numbers
    Open LibraryOL11151205M
    ISBN 100791841553
    ISBN 109780791841556

    Purchase Mechanics of Materials in Modern Manufacturing Methods and Processing Techniques - 1st Edition. Print Book & E-Book. ISBN , No part of this book may be reproduced, stored in a retrieval system, or transmitted, in any form or by any Residual Stress Formation During Manufacturing Processes Residual Stress Formation during Casting R.W. Lewis, K.N. Seetharamu and A.Y. Hassan Handbook of Residual Stress and Deformation of Steel (#G) www.

    The importance of residual stress in fatigue is described with examples. The article explains the effects of heat treatment and manufacturing processes on residual stress. It concludes with a section on the XRD stress measurements in multiphase materials and composites and in locations of stress . One of the most appealing qualities of additive manufacturing (AM) is the ability to produce complex geometries faster than most traditional methods. The trade-off for this advantage is that AM parts are extremely vulnerable to residual stresses (RSs), which may lead to geometrical distortions and quality inspection failures. Additionally, tensile RSs negatively impact the fatigue life and Author: Kevin Carpenter, Ali Tabei.

      The influence of the initial residual stress state on fatigue life was calculated using a model based on the approach of Ioannides and Harris. The resulting residual stresses after the manufacturing process and their changes during operation in a bearing test rig are discussed and compared to those of standard by: 7.   Residual stress can weaken a part or cause it to be more susceptible to bending, warping or breaking. Aside from the corresponding maintenance costs for both the piece and the product that it may be a component of, part failure can of course lead to injury or worse for the people who are relying on it to operate successfully.


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Residual Stress, Fitness-For-Service and Manufacturing Processes Download PDF EPUB FB2

It discusses different roles of residual stresses from the fracture mechanics perspective. Covering both near-surface and through-thickness residual stress measurements, the book serves as a reference tool for graduate students, researchers and practicing : Weili Cheng.

Practical Residual Stress Measurement Methods provides the reader with the information needed to understand key residual stress concepts and to make informed technical decisions about optimal choice of measurement technique. Each chapter, written by invited specialists, follows a focused and pragmatic format, with subsections describing the Format: Hardcover.

The expression residual stresses because of welding” is an all-embracing concept including all the residual stress states arising as a consequence of all the different welding techniques. An important source of residual stresses which is present in all welds produced by localized heating is the shrinkage of very hot zones.

Annotation Examines the factors that contribute to overall steel deformation problems. The Residual Stress articles address the effect of materials and processing, the measurement and prediction of residual stress and distortion, and residual stress formation in the shaping of materials, during hardening processes, and during manufacturing processes.

Some of the topics are the stability and relaxation /5(5). The main stages of residual stress management are considered in this chapter with the emphasis on practical application of various destructive and nondestructive techniques for residual stress measurement in materials, parts, and welded elements.

Some results of testing showing the role of residual stresses in fatigue processes as Author: Yuri Kudryavtsev. Factors that cause residual stresses.

Residual stresses can be present in any mechanical structure because of many causes. Residual stresses may be due to the technological process used to make the component. Manufacturing processes are the most common causes of residul Size: 41KB.

Residual stresses are generated in steel tubes during the manufacturing process. It was found in Key and Hancock () that for cold-formed C RHS: “in general the average residual stress on each face is equal to approximately half the actual yield stress, compressive on the inside and tensile on the outside”.

Similar results were found for CHS in the longitudinal direction (Jiao and. Residual stress also occurs when plastic deformation is non-uniform through the cross-section of an object undergoing a manufacturing process, such as bending, drawing, extruding and rolling.

When a material undergoes deformation, one part is elastic and another plastic. Residual stresses are locked-in stresses within a metal object, even though the object is free of external forces.

These stresses are the result of one region of the metal being constrained by adjacent regions from expanding, contracting, or releasing elastic strains. Residual stresses. Residual Stress in Welding. Modern industry has many requirements like cost efficiency, durability, lightness of manufactured parts and eco-friendliness to name a few.

With these requirements in mind it’s crucial to have deep understanding of the manufacturing process and. RESIDUAL STRESSES AND THEIR EFFECTS ON FATIGUE RESISTANCE • To improve fatigue resistance we should try to avoid tensile mean stress and have compressive mean stress. This can often be achieved by using residual stresses.

• Residual stresses are in equilibrium within a part, without any external Size: 1MB. Residual stress fields require specific attention, especially with respect to managing distortion of parts machined from forgings and in anticipating the effects of residual stress on part performance.

When residual stress is not managed appropriately, excessive distortion drives part rejection in manufacturing, and residual stresses shorten.

In welding process, the residual stress magnitude based on the inherent strain or plastic strain, so the analysis of strain behavior is important to characterize the minimization of residual stress.

In the work done by (soul & yan hua,) the transient longitudinal plastic strain profiles were analyzed at two nodes and presented in figure Cited by: 6. Powder bed fusion (PBF) is a category of additive manufacturing (AM) that is particularly suitable for the production of 3D metallic components.

In PBF, only material in the current build layer is at the required melt temperature, with the previously melted and solidified layers reducing in temperature, thus generating a significant thermal gradient within the metallic component, particularly Author: Richard A.

Barrett, Titouan Etienne, Cormac Duddy, Noel M. Harrison. Get this from a library. Residual stress, fitness-for-service and manufacturing processes: presented at the ASME Pressure Vessels and Piping Conference, Cleveland, Ohio, July[F Brust; P Dong; American Society of Mechanical Engineers.

Pressure Vessels and Piping Division.;]. Keywords: Residual stress, deformation, additive manufacturing, finite element analysis, experimental validation 1. Introduction Highly localized heating and cooling during direct metal deposition (DMD) process may produce nonuniform thermal expansion and contraction, resulting in complicated distribution of residual stresses inCited by: 4.

For example, if a material with a residual stress of MPa is subjected to an applied load of + MPa, the total stress experienced by the material is the summation of the two stresses: + MPa.

Therefore, knowledge of residual stress is important in determining the actual loads experienced by. Residual stresses are stresses that remain in a solid material after the original cause of the stresses has been removed.

Residual stress may be desirable or undesirable. For example, laser peening imparts deep beneficial compressive residual stresses into metal components such as turbine engine fan blades, and it is used in toughened glass to allow for large, thin, crack- and scratch.

Residual stresses are an inescapable consequence of manufacturing and fabrication processes, with magnitudes that are often a high proportion of the yield or proof strength. Residual stresses can be introduced into mechanical components during various thermal or thermo-mechanical processes such as heat treatment, forming, and welding ].

Accurate [. evaluation of residual stresses is important because they play a crucial role in performance, integrity, and lifetime of the Size: 2MB.

Book Description: In this report, a state-of-the-art review of existing residual stress analysis techniques and representative solutions is presented within the context of fitness-for-service (FFS) assessment.

Critical issues associated with existing residual stress solutions in codes/standards and their treatments in performing FFS are discussed.Residual Stress, Fitness-For-Service, and Manufacturing Processes Investigation of Residual Stresses Caused by Welding, Cladding and Tempering of Reactor Pressure Vessels V.

I. Kostylev, B. Z. Margolin, A. Y. Varovin, E. Keim.On the other hand, the residual stress placed in forging usually has a ∩ profile, extremely tensile residual stress in the hub and compressive at the surface[1]. Figure 1 and Figure 2 show the profiles for rolled plate and forging correspondingly.