Michael Casey, Chris Robinson · Cambridge University Press eBooks · 2021
Aspects of the structural mechanics, vibration dynamics and rotor dynamics of compressors including impeller manufacture are described. The background knowledge required to understand the key structural issues is given with some simple analytic solutions. These identify the effects of blade thickness and blade taper on the stresses and the vibration characteristics of impellers. Such analytical solutions are only available for the simplest geometrical cases but give an insight into the fundamentals. Complex computer-based methods are used for the more detailed mechanical analysis of blades. A brief introduction to rotordynamics is also presented with the intention to guide the engineering of robust vibration-free compressor shafts. The characteristics of a simple rotor assembly, known as the Jeffcott single mass rotor, are examined using the equations of motion. Some limits on multistage compressor design introduced by rotordynamics can be derived even on the basis of the simple Jeffcott rotor; for example, the shaft should be thick and short to achieve a high critical speed. More complex rotor assemblies again need to be analysed with computer-based methods which are readily available.
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Jorge Luis González-Velázquez · Elsevier eBooks · 2021
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C. Show · Pleiades · 2024
Structural Integrity C. Show (bio) A mind on fireThe ventricles of my brain in physical painAs I writhe in my sheetsWilling all feeling to cease. Tension building as my breath catchesOn something in my chest, and my lungsRefuse to expand to their full capacity. Worry spins me into despairAs I catastrophize and find myselfLosing touch with reality. A thought traps me in a corral,Running me round indefinitelyAs I flee from its accusations. Many times the remedy is sleep,Plunging myself into unconsciousnessWith or without medicinal assistanceTo avoid the swirling eddies of delusion. In dreams I've learned to die quicklyBecause the fear of the Monster is moreDeadly than whatever it could do to me. Fighting my waking thoughts increases the fear,And nothing save for self-acceptanceCan appropriately dismiss the cycles IFind myself trapped in. [End Page 140] I've grown around this central pillar of Suffering,And now I must uproot myself and replant,Winding my vines around a different core,Redefining my life with a new word or words–Growth. Grace. Joy. [End Page 141] C. Show C. Show (they/them) is an Arkansan author who writes speculative fiction and poetry rooted in their experience as a neurodivergent, bigender individual. Their short fiction has been previously published in ImageOutWrite, Flash Fiction Magazine, and Every Day Fiction. Their poetry chapbook Gestalt is set to be published by new words {press}. Copyright © 2024 Pleiades and Pleiades Press
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J E Beach, J. Lkm, Wuhimsft D. C et al. · 1980
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Paul W. McMullin · 2017
Structural integrity is often relegated to the background, until something goes wrong. Traditional structural engineering codes do little to address the breadth and depth of considerations required to ensure long-term function of structures in moderately to severely aggressive environments. Oversimplification and ignoring past mistakes lead to things that matter being missed. Civil engineering history is punctuated by things we missed—and sometimes minimized—leading to unnecessary loss of life and property. Civil codes talk about a fatigue threshold in steels. Fatigue is time-dependent crack growth due to cyclic stresses. Two primary design methods of treating fatigue exist: safe life and fracture-mechanics correlations. A more effective fatigue design approach is to use fracture-mechanics correlations. Fracture toughness, like all structural properties, is influenced by size. Fracture is the separation of two materials that once were together. Fracture toughness is to the boxer as strength is to the weight lifter.
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R. B. Deo, N. M. Bhatia Oti, Northrop Corporation et al. · 1989
When Government drawings, specifications, or other data are used for any purpose other than in connection with a definitely Government-related procurement, the United States Government incurs no responsibility or any obligation whatsoever. The fact that the government may have formulated or in any way supplied the said drawings, specifications, or other data, is not to be regarded by implication, or otherwise in any manner construed, as licensing the holder, or any other person or corporation; or as conveying any rights or permission to manufacture, use, or sell any patented invention that may in any way be related thereto. This report is releasable to the National Technical Information Service (NTIS). At NTIS, it will be available to the general public, including foreign nations.
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Callan wells-Raynes · 2015
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Marine Safety Agency, Southampton (United Kingdom) · OpenGrey (Institut de l'Information Scientifique et Technique)
Available from British Library Document Supply Centre-DSC:6924.82538(276) / BLDSC - British Library Document Supply Centre
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DJ Smith · 2003
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Mitsuru Uesaka, Kunio Onizawa, Naoto Kasahara et al. · An advanced course in nuclear engineering · 2025
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Uwe Zerbst, Mauro Madia · Elsevier eBooks · 2021
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Dr. R. B. Dooley · 2014
This supplementary release replaces the corresponding supplementary release of 2005, and contains 35 pages, including this cover page. This revised supplementary release has been authorized by the International Association for
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Kikuo Kishimoto, Masazumi Amagai · Tokyo Tech Research Repository (Tokyo Institute of Technology) · 2006
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Jian Ming Gong, Ming‐Liang Zhu, Shan Tung Tu · Trans Tech Publications Ltd. eBooks · 2019
This edition is published by results of the 2018 International Symposium on Structural Integrity (ISSI2018, Nov. 2-5, 2018, Nanjing, China). The articles cover a variety of topics associated with research in the area of the structural integrity assessment and ensuring, while the fracture mechanics, damage mechanisms and structural strength aspects of engineering materials have been closely focused on. The publication of the proceedings aims to present the current solutions in the field of structural integrity research of materials, components and structures.
Cited by 5Open access
D. V. Wallerstein, R. S. Lahey, G. W. Haggenmacher · 1977
Many of the practical aspects and problems of ensuring the integrity of a structural model are discussed, as well as the steps which have been taken in the NASTRAN system to assure that these checks can be routinely performed. Model integrity as used applies not only to the structural model but also to the loads applied to the model. Emphasis is also placed on the fact that when dealing with substructure analysis, all of the checking procedures discussed should be applied at the lowest level of substructure prior to any coupling.
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Shan Tung Tu, Zheng Dong Wang · Applied Mechanics and Materials · 2015
Collection of selected, peer reviewed papers from the 2014 International Symposium on Structural Integrity (ISSI 2014), August 20-24, 2014, Lanzhou, China. The 51 papers are grouped as follows: I. Theoretical Approach, Numerical Simulation and Modeling; II. Structural Integrity Evaluation and Experimental Methodology; III. Industrial Application
Cited by 0Open access
GSI Repository (German Federal Government)
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Peter Stanley · 1992
The assessment of structural integrity is a vitally important consideration in many fields of engineering, which has an influence on the full range of professional activities from conception, design and analysis, through operation to residual life evaluation and possible life extension. In devising satisfactory procedures for this purpose there is
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E Dubois · 2016
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Simon Barrans, John Allport, Goodarz Khodabakhshi · Manufacturing and industrial engineering · 2014
Turbocharger IntegritySince the introduction of Euro VI in January 2014, all new diesel powered commercial vehicles have been equipped with turbocharged engines.It is virtually impossible to meet these emission regulations without using a turbocharger.Similarly, in the passenger car sector both on diesel and petrol (gasoline) powered vehicles, legislative pressure to reduce emissions of carbon dioxide are seeing the introduction of turbochargers across almost all new power units.Future legislation will continue this trend with engine manufacturers becoming increasingly reliant on turbocharging.As well as increasing the requirement for turbochargers, these external factors are also demanding that turbochargers become more responsive with reduced rotor inertia and lower thermal inertias.This in turn makes the task of ensuring that turbocharger components remain fit for purpose for the life of the tur bocharger that much more difficult.In this paper some of the recent developments in turbocharger technology will be identified and the demands that these place on the structural components will be explored.The limitations of current methods of structural integrity assessment for some of these components will be discussed.Future developments of these methods will then be proposed.
Cited by 2Open access