Relevant bibliographies by topics / Fatigue tests

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Fatigue tests'

Author: Grafiati
Published: 4 June 2021
Last updated: 30 July 2024

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Journal articles on the topic "Fatigue tests"

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Novosad, Miroslav, Rostislav Fajkoš, Bohuslav Řeha, and Rudolf Řezníček. "Fatigue tests of railway axles." Procedia Engineering 2, no. 1 (April 2010): 2259–68. http://dx.doi.org/10.1016/j.proeng.2010.03.242.

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Nowell, D. "Mechanics of fretting fatigue tests." International Journal of Mechanical Sciences 29, no. 5 (1987): 355–56. http://dx.doi.org/10.1016/0020-7403(87)90021-x.

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Nowell, D., and D. A. Hills. "Mechanics of fretting fatigue tests." International Journal of Mechanical Sciences 29, no. 5 (January 1987): 355–65. http://dx.doi.org/10.1016/0020-7403(87)90117-2.

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Yazawa, T., T. Tosaka, T. Kuriyama, K. Kuwano, M. Igarashi, and M. Terai. "Fatigue Tests of HTS Coils." IEEE Transactions on Appiled Superconductivity 14, no. 2 (June 2004): 1214–17. http://dx.doi.org/10.1109/tasc.2004.830533.

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Sheth, Dhaval V. "Use of Geosynthetic Material Under Fatigue and Rut Tests." International Journal of Scientific Research 1, no. 7 (June 1, 2012): 184–89. http://dx.doi.org/10.15373/22778179/dec2012/66.

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Dominguese, David J., Jeff Seegmiller, and B. Andrew Krause. "Alterations in Peak Ground-Reaction Force During 60-cm Drop Landings Caused by a Single Session of Repeated Wingate Anaerobic Tests." Journal of Sport Rehabilitation 21, no. 4 (November 2012): 306–12. http://dx.doi.org/10.1123/jsr.21.4.306.

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Context:Lower extremity injury is prevalent among individuals participating in sports. Numerous variables have been reported as predisposing risk factors to injury; however, the effects of muscle fatigue on landing kinetics are unclear.Objectives:To investigate the effects of a single session of repeated muscle fatigue on peak vertical ground-reaction force (GRF) during drop landings.Design:Mixed factorial with repeated measures.Setting:Controlled laboratory.Participants:10 female and 10 male healthy recreational athletes.Intervention:Subjects performed 3 fatigued drop landings (60 cm) after four 20-s Wingate anaerobic tests (WATs) with 5 min of active recovery between fatigued conditions.Main Outcome Measures:Kinetic data of peak forefoot (F1) force, peak rear-foot (F2) force, and anteroposterior (AP) and mediolateral (ML) forces at both F1 and F2.Results:A significant main effect was observed in the nonfatigued and fatigued drop landings in respect to peak F2 force. The greatest significant difference was shown between the first fatigued drop-landing condition and the last fatigued drop-landing condition. No significant difference was observed between genders for all GRF variables across fatigue conditions.Conclusion:A single session of repeated conditions of anaerobic muscle fatigue induced by WATs caused an initial reduction in peak F2 force followed by an increase in peak F2 force across conditions. Muscle fatigue consequently alters landing kinetics, potentially increasing the risk of injury.
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Weinges-Evers, Nicholetta, Alexander U. Brandt, Markus Bock, Caspar F. Pfueller, Jan Dörr, Judith Bellmann-Strobl, Peter Scherer, et al. "Correlation of self-assessed fatigue and alertness in multiple sclerosis." Multiple Sclerosis Journal 16, no. 9 (July 7, 2010): 1134–40. http://dx.doi.org/10.1177/1352458510374202.

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Background: Fatigue is the most common symptom in multiple sclerosis patients, but is difficult to measure; quantification thus relies on self-assessed questionnaires. Objective: To evaluate a battery of neuropsychological tests regarding their capacity to objectify self-reported fatigue. Methods: We assessed the correlation between age, gender, education, Kurtzke’s Expanded Disability Status Scale, depression, fatigue and neuropsychological testing using a cross-sectional approach in 110 multiple sclerosis patients. Fatigue was measured with the Fatigue Severity Scale. Cognition was measured using a series of neuropsychological tests including three subtests of the Test of Attentional Performance, the Brief Repeatable Battery of Neuropsychological Tests and the Faces Symbol Test. Results: According to the Fatigue Severity Scale 51.4% of the cohort were fatigued (scores ≥4). Age, education and depression showed a significant correlation with the Fatigue Severity Scale. Only 5.5% of the cohort exhibited cognitive impairment in the Brief Repeatable Battery of Neuropsychological Tests scores. After correction for age, education, Expanded Disability Status Scale and depression, Fatigue Severity Scale scores were an independent predictor of performance in the alertness subtest of the Test of Attentional Performance (standardized coefficient beta = 0.298, p = 0.014). Conclusion: The alertness subtest of the Test of Attentional Performance may offer an objective method of evaluating self-reported fatigue, and may therefore — in addition to the Fatigue Severity Scale — be a suitable tool for the assessment of multiple sclerosis patients complaining of fatigue.
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Tsivouraki, Niki, Konstantinos Tserpes, and Ioannis Sioutis. "Modelling of Fatigue Delamination Growth and Prediction of Residual Tensile Strength of Thermoplastic Coupons." Materials 17, no. 2 (January 11, 2024): 362. http://dx.doi.org/10.3390/ma17020362.

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Thermoplastic composites are continuously replacing thermosetting composites in lightweight structures. However, the accomplished work on the fatigue behavior of thermoplastics is quite limited. In the present work, we propose a numerical modeling approach for simulating fatigue delamination growth and predicting the residual tensile strength of quasi-isotropic TC 1225 LM PAEK thermoplastic coupons. The approach was supported and validated by tension and fatigue (non-interrupted and interrupted) tests. Fatigue delamination growth was simulated using a mixed-mode fatigue crack growth model, which was based on the cohesive zone modeling method. Quasi-static tension analyses on pristine and fatigued coupons were performed using a progressive damage model. These analyses were implemented using a set of Hashin-type strain-based failure criteria and a damage mechanics-based material property degradation module. Utilizing the fatigue model, we accurately foretold the expansion of delamination concerning the cycle count across all interfaces. The results agree well with C-scan images taken on fatigued coupons during interruptions of fatigue tests. An unequal and unsymmetric delamination growth was predicted due to the quasi-isotropic layup. Moreover, the combined models capture the decrease in the residual tensile strength of the coupons. During the quasi-static tension analysis of the fatigued coupons, we observed that the primary driving failure mechanisms were the rapid spread of existing delamination and the consequential severe matrix cracking.
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YURI, Tetsumi, Toshio OGATA, Kotobu NAGAI, and Keisuke ISHIKAWA. "Fatigue testing system with a helium recondenser and fatigue tests." TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) 21, no. 3 (1986): 163–68. http://dx.doi.org/10.2221/jcsj.21.163.

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Iwasaki, T., and J. G. Wylde. "Corrosion Fatigue Tests on Welded Tubular Joints." Journal of Energy Resources Technology 107, no. 1 (March 1, 1985): 68–73. http://dx.doi.org/10.1115/1.3231165.

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The corrosion fatigue performance of welded tubular joints is recognized as one of the most important factors in the design of offshore structures. Because of the cost of such tests it has been practice to carry out tests on tubular joints in air and to perform corrosion fatigue tests on simple welded joints. Thus very few corrosion fatigue tests have been carried out on tubular joints. The present paper describes the results of fatigue tests which have been carried out on welded tubular joints both in air and in a sea water environment. The specimens were tubular K and KT-joints with chord dimensions of 168 mm diameter and 6 mm wall thickness. The tests were carried out under out-of-plane bending. The corrosion fatigue tests were carried in sea water at 10° C at a frequency of 10 cycles per min, which is typical of wave periods. The specimens were not cathodically protected. The fatigue results in air and sea water are compared, and discussed in connection with the current fatigue design S-N curves for tubular joints contained in various standards.
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Dissertations / Theses on the topic "Fatigue tests"

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Mathieson, P. A. R. "Acoustic emissions from fatigue cracks in steels." Thesis, Cranfield University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379486.

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Johansson, Ulrika. "Fatigue tests and analysis of reinforced concrete bridge deck models /." Stockholm, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1820.

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Bürkner, Falko [Verfasser]. "Biaxial Dynamic Fatigue Tests of Wind Turbine Blades / Falko Bürkner." Hannover : Gottfried Wilhelm Leibniz Universität, 2020. http://d-nb.info/1233426494/34.

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Shorten, James. "Relationships between sprint performance, power output and fatigue." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-03022010-020148/.

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TONIAL, IVAN RAMALHO. "SUSCEPTIBILITY OF DIFFERENT NON-DESTRUCTIVE TESTS FOR INDICATION OF FATIGUE CRACKS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2017. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=31212@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO
Ensaios não-destrutivos são técnicas utilizadas na inspeção de materiais e equipamentos sem danificá-los, sendo executados nas etapas de fabricação, construção, montagem e manutenção. Constituem uma das principais ferramentas do controle e garantia da qualidade de materiais e produtos, sendo largamente utilizados nos setores petróleo/petroquímico, químico, aeronáutico, aeroespacial, siderúrgico, naval, eletromecânico, papel e celulose, entre outros. Representam métodos capazes de proporcionar informações sobre defeitos, características tecnológicas do material, ou ainda, monitoração da degradação em serviço de componentes, equipamentos e estruturas, o que permite o uso de ações de extensão de suas vidas úteis. O objetivo desta pesquisa foi comparar a adequação de diferentes técnicas não destrutivas na detecção e estimativa da dimensão de trincas de fadiga, nucleadas e propagadas intencionalmente, em material estrutural. Para tal, corpos de provas cilíndricos do aço 42CrMo4 com um entalhe em V sofreram carregamentos cíclicos até diferentes números de ciclos, o que proporcionou diferentes tamanhos de trinca. O comprimento das trincas passantes foi monitorado por meio de lupa posicionada na lateral do corpo de prova. Após a etapa de nucleação e propagação das trincas de fadiga, todos os corpos de prova foram inspecionados com emprego das técnicas de Ultrassom Convencional, Ultrassom Phased Array e Radiografia Digital, para permitir a indicação das trincas de fadiga e o estabelecimento de suas dimensões. Terminada as inspeções, os corpos de prova foram resfriados em nitrogênio líquido e fraturados com aplicação de uma carga de flexão, o que permitiu a visualização das superfícies das trincas. Em seguida, as trincas foram medidas visualmente com o auxílio de uma lupa, o que permitiu comparar as indicações (virtual) de defeitos nos corpos de prova com a existência (real) dos mesmos e, ainda correlacionar as dimensões indicadas nas inspeções com aquelas medidas nas superfícies das trincas. Neste contexto, todas as técnicas se mostraram adequadas para a indicação de defeitos. Além disso, para trincas curtas, o Ultrassom Phased Array foi a técnica que apresentou a melhor suscetibilidade para o dimensionamento de descontinuidades, enquanto que a Radiografia Digital se mostrou mais eficiente para trincas mais longas.
Non-destructive tests are techniques used in material and equipment inspection without permanent damage, applied in the stages of manufacture, construction, assembly and maintenance. They are one of the main tools to control and insure the quality of materials and products, with widely applications in oil / petrochemical, chemical, aeronautical, aerospace, steel industry, naval, electromechanical industries. They represent with capacity of providing information about defects, technological characteristics of the material, or monitoring the degradation in service of components, equipment and structures, which allows the use of useful live extensions in service. The objective of this research was to compare the application of different non-destructive techniques in the detection and size estimation of fatigue cracks, nucleated and propagated intentionally, in structural material. For this purpose, cylindrical specimens of 42CrMo4 steel with a V-notch were subjected to cyclic loading with different cycle numbers, which provided different crack sizes. The length of the cracks was monitored by a magnifying glass positioned on the specimen surface. After the crack nucleation and propagation, all specimens were subjected to non-destructive tests making use of Conventional Ultrasound, Phased Array Ultrasound and Digital Radiography, in order to provide crack indications and crack dimensions. After the inspections, the specimens were cooled down in nitrogen and fractured in three point bending to promote opened crack surfaces. In the sequence, the cracks were measured using a magnifying glass, which allowed a comparison between the indicated and measured defects. In this context, all techniques were adequate for crack indications. On the other hands, for short cracks, the Phased Array Ultrasound was the technique that presented the best susceptibility for estimate the discontinuity dimensions, while Digital Radiography proved to be more efficient for longer cracks.
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Grigg, William Reid. "Post-Injection Welded Joint Fatigue Tests of Sandwich Plate System Panels." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/44900.

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The Sandwich Plate System (SPS) is created by bonding two steel plates together with an elastomer core that is injected into a cavity formed by the steel plates and perimeter bars. The result is a stiffer and lighter panel that can be used for plate-like structures such as bridge decks, stadium risers or ship decks. For more versatility, the effects of welding post-injection to the SPS panels were investigated. Three post-injection welded joints were tested to determine fatigue resistance and the effects of cyclic loading on the localized debonding of the heat affected zone at the post-injection welded joint of a SPS bridge deck. Seven panels containing one of three post-injection weld configurations were investigated. Each panel was fatigue tested to ten million cycles or until failure, by applying remote bending to the post-injection welded joint. Experimental deflections and strains were compared to finite element analyses. Fatigue-life predictions were made using code based S-N curves, and a relatively new mesh-insensitive structural stress method with a master S-N curve approach. The post-injection welded joint demonstrated good fatigue resistance to recommended AASHTO loading when shims were used under the middle support to offset the camber in the SPS panels. It was also found that stresses caused by draw down of the camber had an adverse affect on the post-injection welded joint and greatly reduced its fatigue resistance.
Master of Science
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Tola, Tola Adrian Patricio. "Analytical and Experimental Investigation of Low-Cycle Fatigue Fracture in Structural Steel." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/100051.

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The mechanism of metal material failure due to inelastic cyclic deformations is commonly described as Low-Cycle Fatigue (LCF). Fracture in steel structures caused by earthquakes can be associated with this mechanism. Mathematical expressions describing the material deterioration due to LCF are often referred to as LCF laws. The accurate determination of the safety of steel structures against earthquake-induced failure requires the use of LCF laws which have been sufficiently validated with experimental test data. The present study combined experimental testing and computational simulation to enhance the understanding of structural steel fracture due to LCF. The experiments were conducted in specimens extracted from the flat and corner regions of two rectangular steel hollow sections with different thickness. A total of 60 cylindrical specimens with a circumferential notch were subjected to different combinations of axial and torsional loading. The loading protocols and notch geometry were designed to produce different stress states at the location of fracture initiation. Finite element analyses were conducted to obtain the stress state and inelastic strains at the fracture initiation location. This information was then used for the calibration of five existing LCF laws. The calibration also allowed the comparative evaluation of the capability of the different laws to capture fracture initiation for different stress states, with a single set of values for the various parameters. The accuracy of the calibrated LCF laws to predict fracture initiation in a large-scale test was also investigated. To this end, a test was conducted on a rectangular steel tube subjected to cyclic axial loading. A finite element analysis of this test was conducted, and predictions of the instant and location of fracture initiation using the calibrated LCF laws were compared with the experimental observations.
Doctor of Philosophy
The mechanism of material failure due to repeated cycles of large deformations is denoted as Low-Cycle Fatigue (LCF); this failure mechanism can occur in steel structures subjected to loading conditions such as those induced by earthquakes. Mathematical expressions that evaluate the material deterioration due to LCF are often used to predict the instant and location of fracture initiation in small-scale and large-scale tests. An experimental program was conducted for the study of fracture associated with LCF. A total of 60 specimens were fabricated with material extracted from the flat and corner regions of two rectangular steel tubes; the applied loads elongated and/or twisted the specimens until they ruptured. Computational simulations of these tests were conducted to obtain key information at the location of the observed fracture initiation. This information was used to adjust five mathematical expressions suggested by previous researchers that could predict the same instant of fracture initiation observed in the experiments. The accuracy of the predictions from each of these mathematical expressions was evaluated. The accuracy of these mathematical expressions to predict fracture initiation in a large-scale test was also investigated. To this end, an experiment was conducted on a rectangular steel tube subjected to repeated cycles of deformation. A computational simulation of this test was also developed, and predictions of the instant and location of fracture initiation were compared with the experimental observations.
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Mihalides, Dušan. "Hodnocení životnosti kompozitních konstrukcí." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-233923.

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The doctoral thesis deals with fatigue life evaluation of composites structures. The thesis pro-vides complex review of problematic and it is based on recent situation assessment. The main ob-jective of the thesis is to design the methodology of fatigue life evaluation of composites struc-tures. The designed methodology is applied to fatigue life evaluation of sailplane wing and propel-ler blades. One part of the thesis deals with laboratory fatigue tests of composite specimens which are intended for comparison of the effect of manufacturing technology and environment condition.
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Khong, Benjamin. "Fiabilité prédictive de composants de puissance soumis à des tests de fatigue accélérée." Toulouse, INSA, 2007. http://eprint.insa-toulouse.fr/archive/00000177/.

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Les dispositifs électroniques de puissances destinés aux applications automobiles sont soumis à des contraintes cycliques, essentiellement électro-thermiques, durant leur fonctionnement en conditions réelles. Pour vieillir de façon accélérée ces composants à base de MOSFET, un banc de fatigue dédié a été mis au point. L'objectif de ce travail est double. Tout d'abord établir l'influence des paramètres d'entrée (température, durée des cycles et valeur du courant injecté) sur la défaillance des composants de puissance. Analyser ensuite à différentes échelles la microstructure des composants vieillis afin de déterminer les raisons physiques de leur défaillance. La première partie de l'étude décrit brièvement les différents types de composants de puissance, leurs applications ainsi que leur évolution technologique. Le SPSS (Single Power Side Switch) étudié ici est un commutateur de technologie "SmartMos" récemment développé par Freescale Semiconductor. La structure du composant (connections, partie active, radiateur et soudures) ainsi que les outils d'investigation (MET, MEB, FIB, SAM, SAT…). Mis en œuvre sont ensuite décrits. Une méthodologie basée sur vieillissement contrôlé des composants a permis de pointer la délamination entre le silicium et le radiateur en cuivre comme la principale cause de défaillance électrique et de montrer comment cette délamination se propageait. Cette délamination est sans doute à l'origine de défaillances plus sévères qui conduisent à la destruction des composants. Parallèlement, la caractérisation de la microstructure granulaire de la métallisation en aluminium constituant la grille a permis de relier son évolution au nombre de cycles subis et à l'état du composant
Under regular operating conditions, power devices designed for automotive applications have to undergo cyclic stresses, generally electro-thermally driven. To perform accelerated aging tests of these MOS-based devices, a dedicated test bench has been set up. The aim of this work is twofold : firstly determining the influence of the input parameters (temperature, cycle period, injected current) on the power device failure. Then analyzing the microstructure of aged components at different scales to establish the physical causes of failure. In a first part, this study briefly describes the different types of power components, their main application and how they have technologically evolved in the past years. The SPSS (Single Power Side Switch) herein investigated is a switch whose fabrication is based on the "SmartMos" technology, recently developed by Freescale Semiconductor. The inner and outer structure of the device (connexions, source-grid active region, heat sink and solders) as well as the tools used for the analysis (TEM, SEM, FIB, SAM and SAT) are then described. A new procedure, based on the controlled aging of the devices led to the establishment of the power die/heat sink delamination as the main electric failure mode. It also allowed the monitoring of the propagation of the delamination. This power die/heat sink delamination is probably the cause of more abrupt failures leading to the complete ruin of the devices. In parallel, we have shown that the grain structure of the source metal, made of aluminum, evolves according to both the number of cycles and the condition of the tested device
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Tam, W. S. "Pavement evaluation and overlay design." Thesis, University of Nottingham, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378746.

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Books on the topic "Fatigue tests"

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Adamson, Daniel Edward Joseph. Fatigue tests of riveted bridge girders. Edmonton, Canada: University of Alberta, Dept. of Civil Engineering, 1995.

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Schijve, J. The significance of flight simulation fatigue tests. Delft: Delft University of Technology, Dept. of Aerospace Engineering, 1985.

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Lee, M. F. F/A-18 IFOSTP fatigue test airbag load determination on the vertical and horizontal tails. Melbourne: DSTO Aeronautical and Maritime Research Laboratory, 1995.

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North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. An assessment of fatigue damage and crack growth prediction techniques: Papers presented at the 77th Meeting of the AGARD Structures and Materials Panel, held in Bordeaux, France 29th-30th September 1993. Neuilly sur Seine, France: AGARD, 1994.

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North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. An assessment of fatigue damage and crack growth prediction techniques. Neuilly sur Seine, France: AGARD, 1994.

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Advisory Group for Aerospace Research and Development. Structures and Materials Panel. Meeting,, ed. An assessment of fatigue damage and crack growth prediction techniques: Papers presented at the 77th Meeting of the AGARD Structures and Materials Panel, held in Bordeaux, France, 29th-30th September 1993. Neuilly sur Seine: Agard, 1994.

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J, De Luccia J., Russo M. T, and North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development., eds. The fatigue in aircraft corrosion testing (FACT) programme. Neuilly sur Seine, France: AGARD, 1989.

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Greenan, A. F. Constant amplitude fatigue tests on spot-welded mild steel joints. East Kilbride: National Engineering Laboratory, 1991.

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Robin, Cook. Standard fatigue test specimens for fastener evaluation. Neuilly sur Seine, France: AGARD, 1987.

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Willard, Scott A. A record of all marker bands found in the upper rivet rows of 2 adjacent bays from a fuselage lap splice joint. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1995.

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Book chapters on the topic "Fatigue tests"

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Gooch, Jan W. "Fatigue Tests." In Encyclopedic Dictionary of Polymers, 296. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_4797.

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Hills, D. A., and D. Nowell. "Fretting Fatigue Tests." In Solid Mechanics and Its Applications, 153–67. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-015-8281-0_7.

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Ružbarský, Juraj, and Anton Panda. "Thermal Fatigue Tests." In Plasma and Thermal Spraying, 79–83. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-46273-8_8.

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Sosnovskiy, Leonid A. "Methods of Wear-Fatigue Tests." In Foundations of Engineering Mechanics, 187–212. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/978-3-540-27027-0_3.

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Kvočák, Vincent, and Daniel Dubecký. "Fatigue Tests of Composite Beams." In SpringerBriefs in Applied Sciences and Technology, 79–87. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66925-6_7.

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McPherson, W. B., and J. P. Strizak. "Hydrogen Test Standardization of Low-Cycle Fatigue Tests." In Hydrogen Effects in Materials, 1065–72. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118803363.ch95.

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Schütz, W. "Methodology of Variable Amplitude Fatigue Tests." In Advances in Fatigue Science and Technology, 511–22. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2277-8_22.

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Gdoutos, E. E. "Validity of JIc and KIc Tests." In Problems of Fracture Mechanics and Fatigue, 251–52. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-017-2774-7_54.

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Lacombe, Alexandra, Yann Landon, Manuel Paredes, Clément Chirol, and Audrey Benaben. "Influence of the Hole Surface Integrity on the Fatigue Strength of an Aluminium Drilled Part." In Lecture Notes in Mechanical Engineering, 34–40. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-70566-4_7.

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AbstractFatigue strengths of aluminium 2024-T351 open-hole specimens drilled by axial and orbital drilling processes are compared. Two drilling diameters (Ø) are studied: 6.35 mm and 9.53 mm. Surface integrity characterization tests are conducted in order to study the link between drilling processes, surface integrity and fatigue life. Fatigue test results show an increase of the fatigue life for specimens drilled by axial drilling for Ø = 9.53 mm and no significant difference in fatigue life between the two drilling processes for Ø = 6.35 mm. Surface integrity results show no impact of the roughness on the fatigue strength but a potential positive influence of the hole microhardness on the fatigue life.
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Koekkoek, Rutger T., Cor van der Veen, and Ane de Boer. "Fatigue Tests on Post-tensioned Bridge Decks." In High Tech Concrete: Where Technology and Engineering Meet, 912–20. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-59471-2_106.

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Conference papers on the topic "Fatigue tests"

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Halfpenny, Andrew, and Balaje T. Thumati. "Accelerating Fatigue Qualification Tests." In 2022 Annual Reliability and Maintainability Symposium (RAMS). IEEE, 2022. http://dx.doi.org/10.1109/rams51457.2022.9893962.

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Lin, Hong, Robert R. Binoniemi, Gregory A. Fett, and Mick Deis. "Contact Fatigue Tests and Contact Fatigue Life Analysis." In SAE 2005 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2005. http://dx.doi.org/10.4271/2005-01-0795.

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Colalillo, Ricardo, and Carlos Alberto Nunes Dias. "Parametric Modelling of Steel Car Wheels for Finite Element Virtual Fatigue Tests." In SAE Brasil International Conference on Fatigue. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2001. http://dx.doi.org/10.4271/2001-01-4055.

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Bokhoeva, Lyubov A., Vitaliy E. Rogov, Aleksey M. Pokrovskiy, and Anna S. Chermoshentseva. "Stands for Fatigue Strength Tests." In 2018 XIV International Scientific-Technical Conference on Actual Problems of Electronics Instrument Engineering (APEIE). IEEE, 2018. http://dx.doi.org/10.1109/apeie.2018.8545626.

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Królewicz, Michał, and Jerzy Kaleta. "Cyclic tests of magnetorheological elastomers with various magnetoactive filler contents." In FATIGUE FAILURE AND FRACTURE MECHANICS XXVI: Proceedings of the XXVI Polish National Conference on Fatigue Failure and Fracture Mechanics. Author(s), 2016. http://dx.doi.org/10.1063/1.4965955.

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Timoney, Sean S., and Michael Gannon. "Fatigue Life Prediction from Short Duration Tests." In SAE International Congress and Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1985. http://dx.doi.org/10.4271/850368.

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Dzugan, Jan, Radek Prochazka, and Pavel Konopik. "Low Cycle Fatigue Tests With the Use of Miniaturized Test Specimens." In ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-66174.

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Determination of mechanical properties with the use of sub-sized specimens is topic a high interest nowadays. The application of the sub-sized samples is quite wide for all cases where only limited amount of the experimental material is available such as evaluation of additively manufactured products properties, residual life of in-service components, properties determination of developed nano-structured materials, assessment of dilatometric samples used for thermal and thermo-mechanical treatment development, local properties of components, weld joints and so on. Concerning this large application field it would be very useful to prepare standard for small size samples especially for the most demanded material properties: tensile properties, notch impact transition temperature, fatigue properties, fracture toughness and creep. Current paper is going to deal with the low fatigue (LCF) properties assessment with the use of miniaturized specimens’. There were proposed specimen geometries with the use of FEM analysis and testing procedures for considered mini-specimens tests were developed. In the case of strain controlled LCF tests, contactless testing system had to be established for testing of small sized specimens, where it is not possible to apply standard mechanical extensometers for test control. Moreover, LCF procedure for high temperature tests was also successfully established here. The LCF results were subsequently used for Manson-Coffin parameters determination. Results of low cycle tests for several steels are confronted with the results of standard sized specimens with very good agreement for all considered conditions.
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Kasahara, Naoto, Shinichi Hasebe, Sumio Kobaysashi, Masanori Ando, Nobuchika Kawasaki, and Hiroshi Morita. "Spectra Thermal Fatigue Tests Under Frequency Controlled Fluid Temperature Variation: Development of Test Equipment and Preliminary Tests." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2996.

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High cycle thermal fatigue induced by fluid temperature fluctuation is one of the important issues in nuclear plants. JNC has proposed a fatigue evaluation method paying attention to temperature attenuation related with frequency of fluctuation. In order to clarify the frequency effect of fluid temperature fluctuation on the crack initiation and propagation, a sodium temperature controlled thermal fatigue test equipment (SPECTRA) was developed. This equipment is capable of preciously controlling sodium temperature variation under various frequencies with a constant flow rate. This performance was achieved by the control of electromagnetic pumps without mechanical valve operations. Specimens are long straight pipes where temperature fluctuation ranges gradually reduce from upstream to downstream. As preliminary tests, temperature measurement and fatigue experiments were conducted. Measured temperature was preciously controlled under various frequencies. Cracks were observed in upstream area of a specimen. From above results, capability of frequency controlled test by SPECTRA facility was confirmed.
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Kawasaki, Nobuchika, Shinichi Hasebe, Sumio Kobayashi, and Naoto Kasahara. "SPECTRA Thermal Fatigue Tests Under Frequency Controlled Fluid Temperature Variation: Strength Tests." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26414.

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Thermal fatigue strength tests subjected to sinusoidal fluid temperature waves were performed by the SPECTRA test facility, where frequencies were 0.05, 0.2, and 0.5Hz. Cracks were observed on the inner surface of cylindrical test pieces after testing. 0.05Hz’s wave caused a greater number of and deeper cracks than 0.5Hz’s wave under the same fluid temperature range and the same fatigue cycles. The crack initiation region of the 0.05Hz’s wave was larger than for the 0.5Hz’s wave. Estimated fatigue failure cycles based on the frequency transfer functions were compared with test results. Frequency-dependency in failure cycles was observed through these test results, and frequency transfer functions could estimate this dependency. The test results supported the fatigue damage evaluation method with frequency transfer functions.
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Osawa, Naoki, Tetsuya Nakamura, Norio Yamamoto, and Junji Sawamura. "Development of a New Fatigue Testing Machine for High Frequency Fatigue Damage Assessment." In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-11582.

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A new simple fatigue testing machine, which can carry out fast and low-cost fatigue tests of welded joints subject to wave with high frequency vibration, has been developed. This machine is designed for plate bending type fatigue tests, and wave load is applied by using motors with eccentric mass. Springing vibration is superimposed by attaching an additional vibrator to the test specimen, and whipping vibration is superimposed by an intermittent hammering. Fatigue tests which simulate springing and whipping by a conventional servo-type fatigue testing machines are very expensive and use a large amount of electricity. If one uses these conventional machines, it is difficult to simulate superimposed stress wave forms at high speed, and it takes long hours of testing to examine the high frequency effect. In contrast, it is found that fatigue tests can be carried out in fast, i.e. waves with 10Hz or higher frequency for out-of-plane gusset welded joint specimens with 12mm plate thickness by using the developed machine. The electricity to be used for fatigue tests could be minimal, for example one thousandth of that needed for conventional machines. These results demonstrate the superiority of the developed machine.
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Reports on the topic "Fatigue tests"

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Dinovitzer, Aaron, Sanjay Tiku, and Amin Eshraghi. PR-214-153739-R01 ERW Fatigue Life Integrity Management Improvement-Phase III. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), April 2019. http://dx.doi.org/10.55274/r0011574.

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While the general fracture mechanics methodology for calculating fatigue lives is well documented and validated, its application in the definition of pipeline system fatigue lives have differed from field experience. The source and magnitude of the conservatism inherent in the calculated fatigue life estimates are a concern when establishing integrity management programs. Of particular interest, are the fatigue life estimates used in the integrity management programs for Electric resistance welding (ERW) pipeline systems that are primarily concerned with pipe wall anomalies oriented along the pipe axis. In this project, fatigue crack growth rate parameters were generated for pipe body and ERW. Axial flaws of different sizes were machined in pipe body and weld center line of two different pipe geometries and subjected to cyclic pressure tests. Fatigue crack growth rate of the flaws in the full-scale fatigue tests was monitored. The full-scale fatigue tests results were compared to existing codified treatments to quantify the level of conservatism inherent in the current state of practice. Recommendations were provided to enhance the precision and manage conservatism in fatigue crack growth rate calculations used in integrity management. This report has a related webinar.
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Tiku, Sanjay, Binoy John, and Arnav Rana. PR-214-183816-R01 Full-scale Fatigue Testing of Field Dents. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), January 2022. http://dx.doi.org/10.55274/r0012202.

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Significant effort has been spent in understanding dent fatigue behavior and developing engineering assessment tools for dent integrity management involving full-scale dent testing and numerical modeling through Pipeline Research Council International (PRCI), United States Department of Transportation (DOT) and Canadian Energy Pipeline Association (CEPA) sponsored research [1][2][3][4][5]. The results of the research work have been incorporated in American Petroleum Institute (API) recommended practice (RP), API RP 1183 [6]. The assessment tools have been validated and calibrated against full-scale dent fatigue tests. The experimental database of dent full-scale fatigue tests; however, consisted of dents created in the laboratory and the majority of these were created using dome shaped (semi-elliptical end caps) indenters. The current project scope was developed to address the specific gap between fabricated samples developed for full-scale test and real world samples, and to provide further validation of the dent fatigue life assessment methodologies incorporated in API RP 1183[6]. The field dents tested under the current project ranged in depth from 0.6 % to 11 % and included pipe samples with diameters ranging from 10" OD to 40" OD. The experimental data generated using former in-service pipeline samples was used to assess and validate the Level 2 and Level 3 dent fatigue assessment tools incorporated in API RP 1183 and support the improved management of mechanical damage so that dig programs can be better managed and the resources effectively utilized by the operating companies. Related webinar
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Rahbar-Rastegar, Reyhaneh, Gerald Huber, Miguel A. Montoya, Christopher Campbell, and John E. Haddock. Demonstration Project for Asphalt Performance Engineered Mixture Design Testing. Purdue University, 2022. http://dx.doi.org/10.5703/1288284317382.

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The asphalt industry is moving towards performance-based methods for asphalt mixture design. The Federal HighwayAdministration (FHWA) is supportive of state departments of transportations (DOT) adopting index and predictive performance tests, especially those making use of the Asphalt Mixture Performance Tester (AMPT). The FHWA is therefore encouraging state DOTs to gain experience with the requirements of the procedures and analysis tools for Balanced Mixture Design (BMD). The main objective of this study is to evaluate fatigue cracking on three INDOT mainline pavement projects that have asphalt mixtures designed by the Superpave 5 mixture design, and to better understand the fundamental engineering testing capabilities of the AMPT. A total of four Superpave 5 asphalt mixtures were collected and tested from the three projects. The viscoelastic characteristics and fatigue behavior of plant-mixed, laboratory compacted (PMLC), laboratory-mixed, laboratory compacted (LMLC), and plant-mixed, field compacted (PMFC) specimens were assessed according to the AASHTO TP-132 and AASHTO TP-133 test methods. Two AMPT machines (IPC Controls and PaveTest) were used to conduct the dynamic modulus tests, while all fatigue tests were performed using a PaveTest AMPT. The raw data were analyzed using the FlexMAT software. The dynamic modulus and cyclic fatigue test results indicate that AMPT testing can be used to effectively evaluate INDOT asphalt mixtures during the mixture design and production phases. However, to do so, detailed planning and effective training are needed to help ensure the successful completion of AMPT testing.
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Arumugam, Udayansankar, Mimoun Elboujdaini, Ming Gao, and Ramiro Vanoye. PR-328-133702-R02 F-S Fatigue Testing of Crack-in-Dent with Framework for Life Prediction. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), October 2019. http://dx.doi.org/10.55274/r0011628.

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ASME B31.8 states that "Dents that contain stress corrosion cracking or other cracks are injurious to the pipeline" and therefore, requires immediate attention by the Operators. Dent containing crack fields (colonies) are often observed in liquid pipelines. The recently completed PRCI research project MD-1N "Study of the Mechanism for Cracking in Dents in a Crude Oil Pipeline" showed evidence of a mechanism for fatigue cracking. The crack growth rate as a function of stress intensity factor was estimated using the measured spacings of fatigue striations from fracture surfaces based on the assumption that the formation of fatigue striations on a cycle-by-cycle basis. However, due to the lack of full-scale fatigue crack growth data, the success was limited. This gap prompted PRCI to launch a full-scale experimental investigation of crack growth rates of cracks in dents under cyclic pressure load in the simulated groundwater NS4 environment (PRC-328-133702, MD-1Q). The objective of the study was to determine the crack growth rate as a function of stress intensity factor, the number of cycles to failure, and the failure modes of cracks in dents. The test results would be used to evaluate the validity of cycle-by-cycle based assumption for crack growth rate estimation from the measured fatigue-striation-spacing. The investigation was also aimed at establishing a framework for remaining fatigue life prediction of cracks in dents in liquid pipelines. This framework would benefit liquid pipeline Operators to manage better the integrity of dents associated with corrosion fatigue cracking in groundwater. A total of six pipe samples containing cracks in shallow dents excavated from a retired 24-inch diameter liquid transmission pipeline were available and used for the full-scale fatigue tests. The test system developed under the project consisted of four components: (1) a computer-controlled hydraulic pressure cycling system, (2) an environment chamber containing a simulated groundwater NS4 solution mounted on the pipe in around the dent region to provide a simulated field environment condition; (3) real-time crack growth monitoring systems including direct cur-rent potential drop (DCPD), Clip gage and Strain gage; (4) data acquisition system. The cyclic pressure range used in the fatigue tests was 78 to 780 psig (72%SMYS) with R=0.1, which was based on historical operational pressure data and the Rain flow analysis. A constant frequency of 0.0526 Hz was selected for the testing to ensure the frequency requirement for corrosion fatigue is met. The remaining fatigue life of cracks-in-dents and failure modes were evaluated using the full-scale fatigue test results. Further, fatigue crack growth rates were established. Finally, a framework was developed for the life prediction of cracks in shallow dents based on the findings from six full-scale fatigue cyclic tests. This framework will assist liquid pipeline operators to estimate the remaining fatigue life for cracks in shallow dents utilizing inputs from ILI and pipeline's historical operational pressure fluctuation data and to mitigate the threat of cracks in dents in a timely manner. There is a related webinar.
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Griffin, Jerry H. The Influence of Electric Current on Crack Propagation in Thermal Fatigue Tests. Fort Belvoir, VA: Defense Technical Information Center, February 1986. http://dx.doi.org/10.21236/ada172739.

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Strizak, J., C. Brinkman, and G. Ludtka. Plate Weldment Flexural Fatigue Tests in Support of Advanced Aluminum Bridge Deck Design. Office of Scientific and Technical Information (OSTI), June 1999. http://dx.doi.org/10.2172/770423.

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Underwood, J. H., R. A. Farrara, G. P. O'Hara, J. J. Zalinka, and J. R. Senick. Fracture Toughness and Fatigue Crack Initiation Tests of Welded Precipitation-Hardening Stainless Steel. Fort Belvoir, VA: Defense Technical Information Center, January 1990. http://dx.doi.org/10.21236/ada218745.

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Montgomery, Rose, Jy-An Wang, Hong Wang, Bruce Bevard, Darren Skitt, and Oscar Martinez. Sister Rod Destructive Examinations (FY20), Appendix F: Cyclic Integrated Reversible-Bending Fatigue Tests. Office of Scientific and Technical Information (OSTI), November 2020. http://dx.doi.org/10.2172/1764470.

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Montgomery, Rose, Jy-An Wang, Paul Cantonwine, Yadukrishnan Sasikumar, Hong Wang, Bruce Bevard, Darren Skitt, and Oscar Martinez. Sister Rod Destructive Examinations (FY21) Appendix F: Cyclic Integrated Reversible-Bending Fatigue Tests. Office of Scientific and Technical Information (OSTI), March 2022. http://dx.doi.org/10.2172/1864437.

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Montgomery, Rose, Jy-An Wang, Paul Cantonwine, Yadukrishnan Sasikumar, Hong Wang, Bruce Bevard, Darren Skitt, and Oscar Martinez. Sister Rod Destructive Examinations (FY21) Appendix F: Cyclic Integrated Reversible-Bending Fatigue Tests. Office of Scientific and Technical Information (OSTI), March 2022. http://dx.doi.org/10.2172/1864437.

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