作者: eulogize 時(shí)間: 2025-3-21 23:45
978-3-642-44875-1Springer-Verlag Berlin Heidelberg 2010作者: compassion 時(shí)間: 2025-3-22 02:12
Cracks in Rotating Shafts,pagate from some small imperfections on the surface of the body or inside of the material and it is most likely to appear in correspondence of high stress concentration. For example, figure 1.1 shows a crack developed in the stiffening plate of a generator casing.作者: neologism 時(shí)間: 2025-3-22 06:13
Typical Dynamic Behaviour of Cracked Shafts,tion monitoring system is installed and vibrations are analyzed. This chapter is focused on the typical symptoms that can be noticed in industrial rotating machinery and specifically three aspects are considered: the vibrations at rated speed, the so-called . that affects cracked rotors and the vibrations during speed transients.作者: addition 時(shí)間: 2025-3-22 11:33
Results Obtained Using Simulations,ated results are obtained with the approach described in sections 5.3.1 and 5.4.3. The good agreement between the results confirm the validity of the described approach. Other simulated results will be presented also in chapter 7 of this book, in order to highlight different peculiar behaviours.作者: EXULT 時(shí)間: 2025-3-22 13:28
Begriffliche Kl?rungen und ForschungsstandOnce the crack presence is suspected in a rotor and the rotor is removed from service, it can be tested in different ways to ascertain the presence, the position and the depth of a crack.作者: EXULT 時(shí)間: 2025-3-22 18:14
Perspektiven für BildungspolitikThe results of two different laboratory test campaigns on cracked shafts are described because they illustrate two peculiar characteristics of cracked shafts: the ..作者: Defense 時(shí)間: 2025-3-22 22:22
Rotor Testing for Crack Detection,Once the crack presence is suspected in a rotor and the rotor is removed from service, it can be tested in different ways to ascertain the presence, the position and the depth of a crack.作者: 詞匯記憶方法 時(shí)間: 2025-3-23 04:12
Laboratory Tests on Cracked Shafts,The results of two different laboratory test campaigns on cracked shafts are described because they illustrate two peculiar characteristics of cracked shafts: the ..作者: cultivated 時(shí)間: 2025-3-23 06:00
Diskussion und Schlussfolgerungenpagate from some small imperfections on the surface of the body or inside of the material and it is most likely to appear in correspondence of high stress concentration. For example, figure 1.1 shows a crack developed in the stiffening plate of a generator casing.作者: 使激動(dòng) 時(shí)間: 2025-3-23 11:59 作者: Virtues 時(shí)間: 2025-3-23 17:21 作者: 食物 時(shí)間: 2025-3-23 18:34
Begriffliche Kl?rungen und Forschungsstandated results are obtained with the approach described in sections 5.3.1 and 5.4.3. The good agreement between the results confirm the validity of the described approach. Other simulated results will be presented also in chapter 7 of this book, in order to highlight different peculiar behaviours.作者: 職業(yè)拳擊手 時(shí)間: 2025-3-24 01:36
iffness are reduced when the crack is open. These stiffness are 1X periodical when the crack is breathing and cause parametric excitation when torsion or axial loads are applied. Moreover also coupling between shear loads and torsion and vice versa between torsion loads and bending behaviour exists.作者: 不安 時(shí)間: 2025-3-24 03:53 作者: Toxoid-Vaccines 時(shí)間: 2025-3-24 10:04
Diskussion und Schlussfolgerungenpagate from some small imperfections on the surface of the body or inside of the material and it is most likely to appear in correspondence of high stress concentration. For example, figure 1.1 shows a crack developed in the stiffening plate of a generator casing.作者: 記憶法 時(shí)間: 2025-3-24 10:45 作者: bonnet 時(shí)間: 2025-3-24 18:11 作者: 深淵 時(shí)間: 2025-3-24 20:11
Nicolò Bachschmid,Paolo Pennacchi,Ezio TanziCracks are described an analysed from the practical point of view in industry.Modeling facilitates the computational analysis of cracks.Many practical examples illustrate the basic concept作者: 吝嗇性 時(shí)間: 2025-3-25 03:11 作者: Visual-Acuity 時(shí)間: 2025-3-25 04:31 作者: Meditative 時(shí)間: 2025-3-25 08:55
Typical Dynamic Behaviour of Cracked Shafts,tion monitoring system is installed and vibrations are analyzed. This chapter is focused on the typical symptoms that can be noticed in industrial rotating machinery and specifically three aspects are considered: the vibrations at rated speed, the so-called . that affects cracked rotors and the vibr作者: 棲息地 時(shí)間: 2025-3-25 12:08 作者: Expediency 時(shí)間: 2025-3-25 16:43
Results Obtained Using Simulations,ated results are obtained with the approach described in sections 5.3.1 and 5.4.3. The good agreement between the results confirm the validity of the described approach. Other simulated results will be presented also in chapter 7 of this book, in order to highlight different peculiar behaviours.作者: florid 時(shí)間: 2025-3-25 23:53 作者: 必死 時(shí)間: 2025-3-26 02:23 作者: Cervical-Spine 時(shí)間: 2025-3-26 07:14 作者: Ophthalmologist 時(shí)間: 2025-3-26 09:51
the following, two approaches are presented, along with some applications: i) a qualitative one, which does not allow defining severity and position of the identified fault; ii) a model based approach, which on the contrary identifies also severity and position of the fault.作者: Scintillations 時(shí)間: 2025-3-26 15:02
resultant of the tangential stresses due to the applied torque and/or to shear forces is eccentric with respect to the rotor axis: this causes the coupling of bending and torsional behaviour. In addition the 1X opening and closing of the crack, imposed by the bending load, generates also axial 1X displacements.作者: 說(shuō)笑 時(shí)間: 2025-3-26 19:25
Some Special Effects Caused by Cracks,resultant of the tangential stresses due to the applied torque and/or to shear forces is eccentric with respect to the rotor axis: this causes the coupling of bending and torsional behaviour. In addition the 1X opening and closing of the crack, imposed by the bending load, generates also axial 1X displacements.作者: ASTER 時(shí)間: 2025-3-27 00:18
increases exponentially, in many of these cases some further days of operation would have been sufficient to provoke a catastrophic failure, with the loss of the complete machine train and high risks for people and other equipment; also the loss of production of the unit, before the replacement with a new unit, is a comparable economic loss.作者: Myocarditis 時(shí)間: 2025-3-27 02:51
Crack Modelling,increases exponentially, in many of these cases some further days of operation would have been sufficient to provoke a catastrophic failure, with the loss of the complete machine train and high risks for people and other equipment; also the loss of production of the unit, before the replacement with a new unit, is a comparable economic loss.作者: ARY 時(shí)間: 2025-3-27 08:39 作者: FLAG 時(shí)間: 2025-3-27 09:35
Book 2010t. In order to avoid catastrophic failures, accurate vibration analyses have to be performed for crack detection. The identification of the crack location and depth is possible by means of a model based diagnostic approach, provided that the model of the crack and the model of the cracked shaft dyna作者: 輕浮思想 時(shí)間: 2025-3-27 13:42 作者: 莎草 時(shí)間: 2025-3-27 18:32 作者: dendrites 時(shí)間: 2025-3-27 23:45 作者: 枯萎將要 時(shí)間: 2025-3-28 04:35 作者: hypertension 時(shí)間: 2025-3-28 07:28
Werner Hau corrected a number of the chapters, and for the constant help through discussion and debate with my two close collaborators in research, Dr Margaret Howard and Dr Sharron pfueller. Dr Siew Choong, Mrs Maureen Broadway and Ms Ilona Lakatos documented the methods used in our laboratory to study plate作者: 愛(ài)了嗎 時(shí)間: 2025-3-28 12:53 作者: ethnology 時(shí)間: 2025-3-28 17:51
“,”: Submission, Pegging, and Coprophilia in Nina Hartley’s Fan Mail Archivetful, and perhaps entertained recipient of their sexual fantasies. Personal letters like these might be regarded as “the intimacy of heart and mind speaking to heart and mind across distance” (Kenyon, .. Gloucester, UK: A. Sutton, 1992, p. viii). The majority of Hartley’s oeuvre is located in the ma作者: 富饒 時(shí)間: 2025-3-28 20:40 作者: encomiast 時(shí)間: 2025-3-29 01:53
