Academic literature on the topic 'Stress intensity factor range threshold'

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Journal articles on the topic "Stress intensity factor range threshold"

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Li, Bochuan, Motomichi Koyama, Shigeru Hamada, and Hiroshi Noguchi. "Effect analysis of stress-intensity-factor-range decreasing rate for obtaining threshold stress-intensity-factor-range." Theoretical and Applied Fracture Mechanics 104 (December 2019): 102377. http://dx.doi.org/10.1016/j.tafmec.2019.102377.

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MURAKAMI, Yukitaka, Taketo FUKUHARA, and Shigeru HAMADA. "Measurement of Mode II Threshold Stress Intensity Factor Range .DELTA.KIIth." Journal of the Society of Materials Science, Japan 51, no. 8 (2002): 918–25. http://dx.doi.org/10.2472/jsms.51.918.

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TSUJI, Masataka, Toshiyuki MESHII, and Yasumoto SATO. "114 The decrease in the threshold stress intensity factor range." Proceedings of Conference of Hokuriku-Shinetsu Branch 2008.45 (2008): 27–28. http://dx.doi.org/10.1299/jsmehs.2008.45.27.

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FUKUMURA, Naoki, Daisuke SASAKI, Shigeru HAMADA, and Hiroshi NOGUCHI. "OS1003 Threshold Stress Intensity Factor Range Analysis Using Dugdale Model." Proceedings of the Materials and Mechanics Conference 2013 (2013): _OS1003–1_—_OS1003–3_. http://dx.doi.org/10.1299/jsmemm.2013._os1003-1_.

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Zhao, Rong Guo, Xiu Juan Li, Yong Zhou Jiang, et al. "Experimental Study and Numerical Simulation on Fatigue Crack Growth Behavior of GH4133B Superalloy." Key Engineering Materials 512-515 (June 2012): 980–88. http://dx.doi.org/10.4028/www.scientific.net/kem.512-515.980.

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The fatigue crack growth tests for nickel-based GH4133B superalloy used in turbine disk of a type of aero-engine are carried out at room temperature. The stress intensity factor ranges and the fatigue crack growth rates at various stress ratios are measured, and the corresponding threshold stress intensity factor ranges are determined. Using the Paris formula, the experiment data of fatigue crack growth are analyzed. It is shown that the fatigue crack growth rate increasing with increasing stress intensity factor range and stress ratio, and a modified Paris formula considering threshold stress
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MIZUKAMI, Hiroshi, Keiji HOUJIU, Koji TAKAHASHI, Kazuya HANAORI, Akira TANGE, and Kotoji ANDO. "Effects of Overload on Threshold Stress Intensity Factor Range .DELTA.Kth of Steel." Transactions of Japan Society of Spring Engineers, no. 55 (2010): 1–5. http://dx.doi.org/10.5346/trbane.2010.1.

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Hashikura, Yasuaki, Keiji Houjou, Yuji Miyazaki, Koji Takahashi, and Kotoji Ando. "1051 Effect of Overload on Threshold Stress Intensity Factor Range of SUS316." Proceedings of the JSME annual meeting 2008.6 (2008): 191–92. http://dx.doi.org/10.1299/jsmemecjo.2008.6.0_191.

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Ishina, T., K. Morishige, S. Hamada, and H. Noguchi. "Characteristic of threshold stress intensity factor range for small crack on magnesium alloys." Procedia Engineering 10 (2011): 1285–90. http://dx.doi.org/10.1016/j.proeng.2011.04.214.

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Hasegawa, Kunio, Saburo Usami, and Bohumír Strnadel. "Fatigue Crack Growth Thresholds under Negative Stress Ratio for Aluminium Alloys." Key Engineering Materials 810 (July 2019): 34–39. http://dx.doi.org/10.4028/www.scientific.net/kem.810.34.

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When fatigue crack growth rate da/dN = 0, the stress intensity factor range ΔKI is a threshold and it is expressed by ΔKI = ΔKth. The threshold ΔKth is important for design, repair/replacement, particularly, trouble shooting for cracked components. However, the thresholds were not well codified. Authorized and consensus ΔKth are required. This paper introduces the current thresholds provided by fitness-for-service codes and the definition of ΔKth under negative stress ratio R is discussed. Finally, the threshold ΔKth for aluminum alloys in air environment is proposed for fitness-for-service co
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Houjou, Keiji, Koji Takahashi, and Kotoji Ando. "Analytical investigation of effect of stress ratio on threshold stress intensity factor range improved by overload." International Journal of Structural Integrity 3, no. 1 (2012): 53–60. http://dx.doi.org/10.1108/17579861211209993.

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Dissertations / Theses on the topic "Stress intensity factor range threshold"

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Pannemaecker, Alix de. "Etude du phénomène d'arrêt de propagation des fissures au travers d'un couplage multi-échelles fretting, fretting fatigue et essai fatigue C(T)." Thesis, Ecully, Ecole centrale de Lyon, 2015. http://www.theses.fr/2015ECDL0010/document.

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De nombreuses structures aéronautiques telles que les contacts aube/disque, rivet/tôle, assemblages frettés ou boulonnés subissent des endommagements de fretting fatigue dus à des sollicitations vibratoires. Ces sollicitations, qui combinent des chargements de contact de fretting (micro déplacements alternés) et de fatigue, peuvent induire des phénomènes de fissuration. L’objectif de cette thèse est d’identifier les mécanismes de propagation et d’arrêt de fissuration pour différentes configurations, impliquant des chargements de fretting et de fatigue. Différents aspects seront étudiés : - Les
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Jimenez, Acosta Carlos Efren. "Assessment of weld residual stress effects on fatigue crack propagation in ferritic pressure vessel steels." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/assessment-of-weld-residual-stress-effects-on-fatigue-crack-propagation-in-ferritic-pressure-vessel-steels(ef8f4e14-3b9c-4f45-876b-dca5d5e9c121).html.

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This project aims to characterise the fatigue behaviour of a crack propagating in a residual stress field changing from tension to compression in the welded zone of a ferritic pressure vessel steel. The fatigue tests were carried out keeping the applied stress intensity factor range constant to determine the role of residual stresses on fatigue crack growth. The residual stresses prior to crack growth were evaluated by X-ray diffraction. The weight function method was used to infer the expected influence of the residual stress on the crack tip in terms of the residual stress intensity factor.
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Mariano, Neide Aparecida. "Corrosão sob tensão de um aço inoxidável austenítico em soluções aquosas contendo cloretos." Universidade de São Paulo, 1997. http://www.teses.usp.br/teses/disponiveis/18/18136/tde-03102017-142025/.

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No presente trabalho foi estudado o comportamento de um aço inoxidável austenítico do sistema Fe-Cr-Mn-N, nas condições como recebido, solubilizado e sensitizado, quando submetidos à meios contendo cloretos. Para analisar a suscetibilidade à corrosão sob tensão foram utilizados corpos de prova dos tipos DCB (\"Double Cantilever Beam\") e C(T) (\"Compact- Tension\"), pré-trincados em fadiga, com entalhes laterais e carregados com cunhas. Os meios empregados foram as soluções aquosas 45% em peso de MgCl2 na temperatura de ebulição de 154°C, água do mar sintética na temperatura ambiente e de
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Shipsha, Andrey. "Failure of Sandwich Structures with Sub-Interface Damage." Doctoral thesis, Stockholm, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3184.

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Lados, Diana Aida. "Fatigue crack growth mechanisms in Al-Si-Mg alloys." Link to electronic thesis, 2004. http://www.wpi.edu/Pubs/ETD/Available/etd-0204104-125758.

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Thesis (Ph. D.)--Worcester Polytechnic Institute.<br>Keywords: Microstructure; Elastic-Plastic Fracture Mechanics; Crack closure; A356; J-integral; Conventionally cast and SSM Al-Si-Mg alloys; Residual stress; Heat treatment; Fatigue crack growth mechanisms; Threshold stress intensity factor; Plastic zone; Paris law; Fracture toughness; Roughness. Includes bibliographical references.
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SUNDARAMOORTHY, RAVI KUMAR. "INITIATION OF DELAYED HYDRIDE CRACKING IN Zr-2.5Nb MICRO PRESSURE TUBES." Thesis, 2009. http://hdl.handle.net/1974/1797.

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Pressure tubes pick up hydrogen while they are in service within CANDU reactors. Sufficiently high hydrogen concentration can lead to hydride precipitation during reactor shutdown/repair at flaws, resulting in the potential for eventual rupture of the pressure tubes by a process called Delayed Hydride Cracking (DHC). The threshold stress intensity factor (KIH) below which the cracks will not grow by delayed hydride cracking of Zr-2.5Nb micro pressure tubes (MPTs) has been determined using a load increasing mode (LIM) method at different temperatures. MPTs have been used to allow easy study of
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Book chapters on the topic "Stress intensity factor range threshold"

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Yang, Bing, M. N. James, Yongfang Huang, J. M. Vasco-Olmo, and F. A. Díaz. "An Improved Prediction of the Effective Range of Stress Intensity Factor in Fatigue Crack Growth." In Structural Integrity. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13980-3_17.

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Sglavo, Vincenzo M., David J. Green, Steven W. Martz, and Richard E. Tressler. "Determination of Threshold Stress Intensity Factor for Sub-Critical Crack Growth in Ceramic Materials by Interrupted Static Fatigue Test." In Fracture Mechanics of Ceramics. Springer US, 1996. http://dx.doi.org/10.1007/978-1-4615-5853-8_13.

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Kou, K. P. "Stress Intensity Factor of a Wide Range of Semi-Elliptical Partly Through-Wall Crack in a Finite-Thickness Plate." In Computational Methods in Engineering & Science. Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/978-3-540-48260-4_43.

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Kim, Young Suk, Sang Bok Ahn, Kang Soo Kim, and Yong Moo Cheong. "Temperature Dependence of Threshold Stress Intensity Factor, KIH in Zr-2.5Nb Alloy and Its Effect on Temperature Limit for Delayed Hydride Cracking." In Experimental Mechanics in Nano and Biotechnology. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-415-4.919.

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Walkup, John T., and Benjamin N. Schneider. "Tourette’s Syndrome." In Psychiatric Aspects of Neurologic Diseases. Oxford University Press, 2008. http://dx.doi.org/10.1093/oso/9780195309430.003.0020.

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Tourette’s syndrome (TS) is a neuropsychiatric disorder of childhood onset characterized by the presence of motor and vocal tics for a duration of at least 1 year. Tics are typically brief and stereotypical movements (eg, eye blinking, head jerks) or vocalizations (eg, throat clearing, grunting), but they can also be more complex movements involving multiple muscle groups and combinations of movements and sounds. There is a great range of tic severity. Tics can be so subtle or occur so infrequently as to be unnoticeable, even to the person with the tics. However, tics can also be so intense and frequent that they are readily noticeable by others, and they can be disruptive of daily activities. Indeed, in some cases (eg, severe head jerks), tics can cause pain or physical injury (eg, cervical disc and spine damage). Tics usually begin in childhood; the average age at diagnosis is 7 years. They reach peak severity in the early teen years and then lessen in intensity and frequency during young adulthood (Leckman et al., 2001). Tics wax and wane in severity, worsening with excitement and stress and improving during calm, focused activities. Coprolalia and its motor counterpart copropraxia (uttering obscene words or making obscene gestures, respectively) are uncommon symptoms, occurring in less than 10% of patients with TS and are not required for a diagnosis of TS (Robertson and Stern, 1998). Many patients describe a sensation or urge prior to tic occurrence, commonly referred to as a premonitory sensation or urge (Miguel et a1., 2000). Even though tics are considered involuntary, they can be voluntarily suppressed for short periods of time. Prevalence estimates of TS have varied and depend a great deal on the threshold for diagnosis and setting in which cases are identified. A review of the many epidemiologic studies suggests that 0.1% to 1% of people are affected with TS (Scahill et al., 2005). Despite this variability in specific rates, epidemiologic studies have consistently identified that males are more commonly affected than females, children are more frequently affected than adults, and that milder forms of TS are more common than severe forms.
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Conference papers on the topic "Stress intensity factor range threshold"

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Takahashi, Koji, Yuji Miyazaki, Yasuaki Hashikura, and Kotoji Ando. "Improvement of the Threshold Stress Intensity Factor for Stress Corrosion Cracking in SUS316 by Tensile Overload." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25610.

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The effects of overload on the threshold stress intensity factor (KISCC) for stress corrosion cracks (SCC) in stainless steel were studied. Tensile overload was applied to a wedge opening loaded specimen of SUS316, and SCC tests were carried out to determine the resultant KISCC. As a result, the value of KISCC was found to increase with increasing stress intensity factor by tensile overload. The effects of tensile overload on KISCC and the threshold stress intensity factor range for fatigue (ΔKth) were compared. It was found that the effect of tensile overload on KISCC was larger than that of
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Ando, Kotoji, Koji Takahashi, Yasuaki Hashikura, and Keiji Houjyou. "Effect of Overload on the Threshold Stress Intensity Factor Range of SUS316 as a Function of Crack Size." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25153.

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The effects of overload on the threshold stress intensity factor range (ΔKth) in SUS316 were studied. Tensile overload was applied to a CT(Compact tensiton) specimen of SUS316. Then, fatigue tests were carried out to determine the resultant threshold stress intensity factor range (ΔKth). The mechanism of the improvement of ΔKth by the tensile overloading was analyzed using the Dugdale model. It was clarified that the value of ΔKth increases as increasing the overloading. The compressive residual stress intensity factor (Kr) is the key factor controlling the value of ΔKth.
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Friedman, Edward, Russell C. Cipolla, and Joseph M. Bloom. "Technical Basis for the Incorporation of a Fatigue Crack Growth Threshold Limit Into Appendix A to Section XI." In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1245.

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A recent revision to A-4300 of Appendix A to Section XI of the ASME Boiler and Pressure Vessel Code specifies a limiting threshold value of the stress intensity factor range below which crack propagation under cyclic loading can be neglected. The threshold value decreases with increasing R ratio, where R is defined as the ratio of the minimum to the maximum stress intensity factor. This paper reviews the crack closure phenomenon that is the underlying reason for this effect, summarizes the low-alloy pressure vessel steel test data upon which the threshold limit is based, and proposes an empiri
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Sun, Chao, Shi H. Ying, Jun Tan, Qian Peng, and Xun Dai. "Threshold Stress Intensity Factor for Delayed Hydride Cracking of a Recrystallized N18 Alloy Plate Along the Rolling Direction." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29212.

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The objective of this study is to obtain the threshold stress intensity factor, KIH, for an initiation of delayed hydride cracking (DHC) in a recrystallized N18 (Zr-1.05Sn-0.27Nb) alloy plate which was manufactured in China, gaseously charged with 60ppm of hydrogen by weight. By using both the load increasing method (LIM) and load drop method (LDM), the KIH’s along the rolling direction were investigated over a temperature range of 150–255°C. The results showed that KIH along the rolling direction was found to be higher in the LIM than that in the LDM. In the LIM, KIH’s of the N18 alloy plate
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Hasegawa, Kunio, and Bohumir Strnadel. "Definition of Fatigue Crack Growth Thresholds for Ferritic Steels in Fitness-for-Service Codes." In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-84940.

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Fatigue crack growth rates are expressed as a function of the stress intensity factor ranges. The fatigue crack growth thresholds are important characteristics of fatigue crack growth assessment for the integrity of structural components. Almost all materials used in these fatigue tests are ferritic steels. As a result, the reference fatigue crack growth rates and the fatigue crack growth thresholds for ferritic steels were established as rules and they were provided by many fitness-for-service (FFS) codes. However, the thresholds are not well defined in the range of negative stress ratio. The
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Bian, Lichun, and Jae-Kyoo Lim. "Fatigue Threshold Considerations During Crack Propagation." In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1211.

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The angled crack problem has been given special attention in the recent years by fracture mechanics investigators due to its close proximity to realistic conditions in engineering structures. In this paper, an investigation of fatigue crack propagation in steel pipes containing an inclined surface crack is presented. The inclined angle of the crack with respect to the axis of loading varied between 0° and 90°. During the fatigue tests, the growth of the fatigue crack was monitored using the AC potential drop technique. Based on the concept of the effective stress intensity factor range, Δkeff,
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Shek, Gordon K., and Jun Cui. "Effects of Temperature and Thermal Cycling on the Threshold Stress Intensity Factor for Delayed Hydride Cracking in Zr-2.5Nb Pressure Tubes." In ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-77332.

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CANDU™ reactor uses Zr-2.5 Nb alloy pressure tubes as the primary coolant containment. The pressure tubes are susceptible to a crack initiation and growth mechanism known as Delayed Hydride Cracking (DHC), which is a repetitive process that involves hydrogen diffusion, hydride precipitation, hydrided region formation and fracture at a crack-tip. The threshold stress intensity factor for DHC initiation from a crack, KIH, is an important material parameter for assessing DHC initiation from crack-like or blunt flaws in the pressure tubes. Tests were performed on compact tension samples machined f
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Iijima, Takashi, Hisatake Itoga, Bai An, Chris San Marchi, and Brian P. Somerday. "Fracture Properties of a Cr-Mo Ferritic Steel in High-Pressure Gaseous Hydrogen." In ASME 2015 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/pvp2015-45328.

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Recently, the measurement of threshold stress intensity factors for various low alloy ferritic steels was performed in high-pressure hydrogen gas, and it was revealed that the threshold for subcritical crack extension under rising displacement was lower than that for crack arrest under constant displacement. We previously examined the threshold for subcritical crack extension of ASME SA-372 Grade J ferritic steels using an unloading elastic compliance method in gaseous hydrogen at pressure up to 115 MPa, and reported that the cracking thresholds under the unloading elastic compliance method ar
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Chen, Weixing, R. Kania, R. Worthingham, and S. Kariyawasam. "Crack Growth Model of Pipeline Steels in Near-Neutral pH Soil Environments." In 2008 7th International Pipeline Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/ipc2008-64475.

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This paper reports the crack growth behavior of pipeline steels in near-neutral pH environments. Crack growth data both from laboratory tests using compact tension (CT) specimen and from full scale tests of shallow cracks were analyzed using a true corrosion-fatigue model established recently. It has been found that the crack growth rate can be correlated with ΔK2Kmax/fα, where ΔK is the stress intensity factor range; Kmax is the maximum stress intensity factor; f is the loading frequency; and α is a factor related to corrosivity of soil environments. This correlation enables determination of
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Brumek, Jan, Bohumir Strnadel, and Ivo Dlouhy´. "The Model of Fatigue Crack Growth in High Pressure Cylinder Wall." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-26010.

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This paper presents numerical study to predict crack growth rate under fatigue loading in a high pressure cylinder wall made of high strength steel. Experimental fatigue crack growth data on three point bending test samples were applied to simulate and predict crack growth process using detailed three dimensional parametric finite element models. The fatigue crack propagation was based on linear elastic fracture mechanics and stress intensity factor determination. Finite element model provides results of crack growth analysis optimized for the stress levels of operating pressure level. Results
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Reports on the topic "Stress intensity factor range threshold"

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Kapp, J. A. Wide Range Stress Intensity Factor and Crack-Mouth-Opening Displacement Expressions Suitable for Short Crack Fracture Testing with Arc Bend-Chord Suppport Samples. Defense Technical Information Center, 1990. http://dx.doi.org/10.21236/ada218395.

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