Relevant bibliographies by topics / Effet de compression

Contents

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

Academic literature on the topic 'Effet de compression'

Author: Grafiati
Published: 7 July 2024
Last updated: 31 July 2025

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Journal articles on the topic "Effet de compression"

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Danjou, Anne, and Sophie Blaise. "Effet d’une formation courte sur la pose de compression veineuse." Vascular Diseases 50, no. 1 (2025): 48. https://doi.org/10.1016/j.vasdi.2025.01.035.

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Lussiana, T., A. Terrillon, J. L. Raynaud, N. Tordi, L. Mourot, and A. Ménétrier. "Effet dose-réponse de la compression élastique sur les vibrations musculaires." Science & Sports 30, no. 2 (2015): 101–4. http://dx.doi.org/10.1016/j.scispo.2014.09.004.

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Bouchereau, A., C. Martinet, G. Gamache, J. L. Honeine, and P. Rougier. "Effet des bas de compression sur la stabilisation hémodynamique et posturale." Neurophysiologie Clinique/Clinical Neurophysiology 45, no. 4-5 (2015): 417. http://dx.doi.org/10.1016/j.neucli.2015.10.076.

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Didier RASTEL. "Principes de base, mode d’action et effets de la compression médicale en pathologie vasculaire." Les pathologies vasculaires (anciennement ANGEIOLOGIE) 71, no. 01 (2019): 9. http://dx.doi.org/10.54695/mva.71.01.2234.

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La compression médicale dans les affections vasculairesest un traitement ancien mais son action physiologique estencore mal comprise. Le catalogue des effets sur l’organisme est riche notamment sur le plan de l’action macroet microcirculatoire mais la relation entre effets physiologiques et bénéfice clinique reste à ce jour peu claire. Larelation dose-effet est difficile à mesurer dans les étudeset la variabilité de la pression exercée sur les membres d’unindividu à l’autre rend la généralisation des résultats délicate. Cependant, deux effets principaux de la compressionpeuvent être mise en av
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SAMI, Soraya, and Kamel BOUZID. "Treatment of bone metastases by intravenous bisphosphonates and denosumab in breast cancer." Batna Journal of Medical Sciences (BJMS) 6, no. 1 (2019): 18–21. http://dx.doi.org/10.48087/bjmsra.2019.6106.

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Les métastases osseuses sont fréquentes dans le cancer du sein. Elles sont à l’origine d’une morbidité importante, entrainant des fractures, des douleurs osseuses, une compression médullaire ou une hypercalcémie. Les bisphosphonates intraveineux et le denosumab, associés aux différents traitements multidisciplinaires, améliorent la qualité de vie des patients. En effet, ils permettent une réduction des complications osseuses et la survenue des événements osseux.
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Leclerc, Marc. "Traumatismes de la carapace chez la tortue : présentation de la technique de cerclage en huit." Le Nouveau Praticien Vétérinaire canine & féline 20, no. 85 (2023): 68–72. http://dx.doi.org/10.1051/npvcafe/2024011.

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Les traumatismes de la carapace sont fréquemment rapportés chez tous les types de tortues. Sous les écailles se trouve un agencement de plaques osseuses qui protègent les organes de la cavité cœlomiques. Les poumons sont les organes les plus dorsaux, ils couvrent les autres viscères. Lors de traumatisme, il faut réaliser un bilan lésionnel complet, puis stabiliser cliniquement l’animal. Vient ensuite la bonne gestion des plaies, qui est un préambule essentiel à la stabilisation orthopédique. Les rinçages favorisent l’assainissement des plaies par détersion autolytique. Lors de perte de fragmen
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RAMANANDRAIBE, Tanteliniaina Mbolanirina, Pierre RAKOTOMAMONJY, Guy Joël ROBISONARISON, and Edouard Ravalison ANDRIANARISON. "Amélioration Des Qualités Mécaniques D’une Brique De Terre Comprimée Stabilisée Au Ciment Par Trempe De Consolidation Au Silicate De Soude." International Journal of Progressive Sciences and Technologies 38, no. 1 (2023): 388. http://dx.doi.org/10.52155/ijpsat.v38.1.5195.

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Le ciment constitue un stabilisant courant pour la stabilisation des briques en terre crue, pourtant sa production dégage beaucoup de gaz à effet de serre nuisibles pour l’environnement. De plus, son coût élevé limite son utilisation dans la stabilisation des matériaux en terre. En effet, une brique de terre comprimée stabilisée au ciment BTCSC nécessite l’ajout d’une teneur assez élevée supérieur à 5% de ciment pour assurer une bonne résistance mécanique à la compression. Cependant, ces BTCSC ont la faiblesse de ne pas résister à l’immersion dans l’eau. Notre objectif est de maintenir à 5% la
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Ma, Wei Hua, and Hong Zhen Kang. "Experimental Study on Compressive Behavior of CFRP Confined Concrete Columns." Advanced Materials Research 446-449 (January 2012): 3725–29. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.3725.

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Compressive tests of 30 concrete column specimens with three concrete strength grades are carried out in this paper to study ultimate compressive strength of specimens. The specimens are divided into three groups, that is, unconfined, confined by CFRP with no initial compression and confined by CFRP with various initial compressions. The different initial compressions’ influence on ultimate stresses and strains are investigated. The decrease of CFRP reinforcing effect due to pre-compression are analyzed. The research results provide experimental datum for reinforced design of existing concrete
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Gharbi, Mohamed, and Mohamed Aymen Labiod. "Une application comparative pour l’enseignement des méthodes de compression d’images par transformées orthogonales." J3eA 21 (2022): 2039. http://dx.doi.org/10.1051/j3ea/20222039.

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Nous proposons dans cette contribution une interface graphique comme outil pédagogique pour l’enseignement des méthodes de compression par transformées orthogonales utilisées dans l’encodage d’images. Cet outil est utilisé dans l’enseignement proposé aux étudiants en MASTER du département Développement, Recherche, Enseignement en Audiovisuel et Multimédia (DREAM) de l’Université Polytechnique Hauts-de-France (Valenciennes – France). Les offres de formation s’appuient notamment sur un enseignement du traitement de signal, des images ainsi que la compression des images et de la vidéo. Les deux a
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Khamlichi, Abdellatif, Mohammed Bezzazi, Larbi Elbakkali, and Ali Limam. "Effet des imperfections géométriques sur la stabilité des coques élastiques cylindriques." Canadian Journal of Civil Engineering 31, no. 1 (2004): 27–32. http://dx.doi.org/10.1139/l03-084.

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The effects of geometrical imperfections on the critical load of elastic cylindrical shells when subjected to axial compression are studied through analytical modelling. In addition to distributed defects of both axisymmetric or asymmetric forms, emphasis is put on the more severe case of localized defects satisfying the axial symmetry. The Von Kármán – Donnell shell equations were used. The obtained results show that shell strength at buckling varies very much with the defect amplitude. These variations are not monotonic in general. They indicate however a clear reduction of the shell critica
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Dissertations / Theses on the topic "Effet de compression"

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Chiquier, Jean-Michel. "Compression temporelle par effet Raman intra-cavité et compression spectrale des impulsions d'un laser à excimère." Paris 11, 1988. http://www.theses.fr/1988PA112084.

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La première partie de la thèse est une étude du verrouillage par injection des lasers à excimères. Ce type de fonctionnement est utilisé pour réduire la largeur spectrale du rayonnement émis par des lasers à excimères fonctionnant avec des cavités instables. L'affinement spectral ainsi obtenu présente cependant l'inconvénient de ne pas s'appliquer à toute l'énergie d'émission. Cette limitation de l'efficacité est due à des mécanismes de compétition de fréquences qui sont mis en évidence et analyses au cours de la présente étude. Ces mécanismes sont diagnostiqués au moyen de mesures quantitativ
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Chiquier, Jean-Michel. "Compression temporelle par effet Raman intra-cavité et compression spectrale des impulsions d'un laser à excimère." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37612742x.

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Nakano, Tamon. "Étude numérique de l’interaction choc/couche limite en géométrie de révolution." Thesis, Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2018. http://www.theses.fr/2018ESMA0013/document.

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Les phénomènes d’interactions choc/couche limite sont dimensionnants pour de nombreuses applications des domaines de l’aéronautique et du spatial. Ils peuvent être associés à la formation de décollements instationnaires à basse fréquence qui n’ont été étudiés jusqu’à présent qu’en géométrie plane. La présente étude vise à caractériser ce type d’interaction en configuration cylindrique. Un outil de simulation numérique directe,basé sur l’extension de schémas hybrides aux différences finies de haute précision (centrés optimisés6/WENO 5) en géométrie curviligne, a été développé et validé à traver
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Michau, Vincent. "Conversion de fréquence et compression d'impulsion d'un laser alexandrite par diffusion Raman stimulée intracavité." Paris 11, 1988. http://www.theses.fr/1988PA112065.

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Un système laser alexandrite de forte puissance a été mis au point. Il délivre une impulsion de 500 mj en énergie sur une plage d'accord de 60 nm à la cadence de 4 Hz. Ce développement a été accompagnée d'une étude générale de la possibilité d'accord en fréquence des cavités en anneau associées a des milieux présentant du gain en bande large. Un dispositif de diffusion Raman stimulée intracavité permettant de déplacer la plage d'accord de l'alexandrite vers l'infrarouge a été modélisé sur microordinateur et testé expérimentalement. Un rendement quantique de conversion de 40% a ainsi été obtenu
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Storck-Gantois, Fanny. "Effet de la compression et de l’ajout d’additifs sur l’amélioration des performances d’un accumulateur au plomb." Paris 6, 2008. http://www.theses.fr/2008PA066370.

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Les travaux de cette thèse visent le développement d’un accumulateur au plomb-acide aux propriétés améliorées en combinant l’utilisation d’additifs et la mise en compression des cellules. L’utilisation d’additifs poreux vise à favoriser la diffusion de l’électrolyte au sein de la matière active positive et l’utilisation d’additifs de conductivité tend à optimiser le réseau de conduction des matériaux actifs. Le maintien de la cohésion des matières en cyclage est assuré par la mise en compression des électrodes. Dans cet objectif, un protocole de fabrication d’électrodes positives a été dévelop
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Malvache, Arnaud. "Optique non-linéaire à haute intensité : Compression d'impulsions laser Interaction laser-plasma." Phd thesis, Palaiseau, Ecole polytechnique, 2011. https://theses.hal.science/index.php?halsid=uofsba7dj5fa0catc3i9mh00v0&view_this_doc=pastel-00677295&version=1.

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Cette thèse principalement théorique se situe dans le cadre de l'utilisation du laser de la Salle Noire du LOA, qui fournit des impulsions ultracourtes (2 cycles optiques) et énergétiques (1mJ) à 1kHz, stabilisées en CEP, pour générer des harmoniques sur cible solide. D'une part, pour profiter pleinement des ressources du laser, j'ai développé un code de simulation de propagation dans une fibre creuse qui, associé à une analyse expérimentale, a permis de repousser la limite en énergie de cette technique de compression. J'ai d'autre part utilisé des simulations PIC et j'ai développé un modèle d
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Manseau, Anthoni. "Génération d’états comprimés du champ électromagnétique micro-onde à l’aide d’un transistor à effet de champ commercial." Mémoire, Université de Sherbrooke, 2017. http://hdl.handle.net/11143/10538.

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La lumière comprimée est un état du champ électromagnétique pour lequel le bruit, mesuré selon une certaine quadrature est inférieur au bruit du vide. Dans cet ouvrage, nous étudions la possibilité de générer de la lumière micro-onde à partir d’un transistor à effet de champ commercial. D’une part, nous observons le bruit de grenaille du canal drain-source à basse fréquence, ce qui suggère que le canal est cohérent. Ensuite, nous exploitons cette cohérence et procédons à une expérience standard de compression par le bruit de grenaille. D’autre part, nous prédisons, à l’aide d’un modèle
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Wouts, Jérémy. "Étude et modélisation du comportement en compression du bois sous sollicitations d'impacts." Thesis, Valenciennes, 2017. http://www.theses.fr/2017VALE0025.

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Le bois est un matériau cellulaire naturel et excellent absorbeur d’énergie. Employé au sein de structures du type limiteur d’impact, il subit de nombreux phénomènes lors d’un cas de chute. Une large campagne expérimentale est réalisée afin d’analyser les réponses en compression du hêtre et de l’épicéa, en fonction de la direction de sollicitation, de la vitesse de déformation pour la plage [0.001-600] s−1 et de deux types de restrictions latérales qualifiées d’extrêmes. La direction longitudinale se révèle la plus sensible à la vitesse ainsi qu’au type de restrictions latérales et les conséqu
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Malvache, Arnaud. "Optique non-linéaire à haute intensité : Compression d'impulsions laser Interaction laser-plasma." Phd thesis, Ecole Polytechnique X, 2011. http://pastel.archives-ouvertes.fr/pastel-00677295.

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Cette thèse principalement théorique se situe dans le cadre de l'utilisation du laser de la Salle Noire du LOA, qui fournit des impulsions ultracourtes (2 cycles optiques) et énergétiques (1mJ) à 1kHz, stabilisées en CEP, pour générer des harmoniques sur cible solide. D'une part, pour profiter pleinement des ressources du laser, j'ai développé un code de simulation de propagation dans une fibre creuse qui, associé à une analyse expérimentale, a permis de repousser la limite en énergie de cette technique de compression. J'ai d'autre part utilisé des simulations PIC et j'ai développé un modèle d
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Tounsi, Rami. "Comportement des structures en nids d'abeilles sous sollicitations dynamiques mixtes compression/cisaillement et effet de l'orientation des cellules." Phd thesis, Université de Valenciennes et du Hainaut-Cambresis, 2014. http://tel.archives-ouvertes.fr/tel-01002421.

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Les nids d'abeille d'aluminium combinent légèreté et grande capacité d'absorption d'énergie. Ils sont alors de plus en plus utilisés dans les secteurs du transport (automobile, aéronautique ...) pour contribuer conjointement à l'allègement structural et à la sécurité. Dans cette thèse, le comportement à l'écrasement des nids d'abeille est étudié en tenant compte de l'effet combiné de l'angle d'orientation dans le plan des cellules, de l'angle de chargement et de la vitesse de sollicitation, que la littérature ne relate pas. Un dispositif de chargement mixte compression/cisaillement est conçu p
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Books on the topic "Effet de compression"

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A, Schowengerdt Robert, and Research Institute for Advanced Computer Science (U.S.), eds. The effect of lossy image compression on image classification. Research Institute for Advanced Computer Science, NASA Ames Research Center, 1995.

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Trunin, R. F. Shock compression of condensed materials. Cambridge University Press, 1998.

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E, Perez-Davis Marla, and United States. National Aeronautics and Space Administration., eds. The effect of compression on individual pressure vessel nickel/hydrogen components. National Aeronautics and Space Administration, 1988.

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Balasundaram, Vikram. Effect of moisture on the compressive strength of C.F.R.P. University of Birmingham, 1985.

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E, Ingham P., Aitken B. L, and Wool Research Organisation of New Zealand., eds. The effect of lubricants on the bulk, compression properties, and drape of wool batting. Wronz, 1986.

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Balian, Razmik Aivaz. The effect of compression ratio on the performance of a direct injection diesel engine. BrunelUniversity, 1990.

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Curlett, Brian P. The aerodynamic effect of fillet radius in a low speed compressor cascade. National Aeronautics and Space Administration, 1991.

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Lafferty, Ian. The effect of crystallisation variables on the powder characteristics, mechanical properties and compression behaviour of dextrose. De Montfort University, 1998.

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L, Suder Kenneth, and United States. National Aeronautics and Space Administration., eds. The effect of adding roughness and thickness to a transonic axial compressor rotor. National Aeronautics and Space Administration, 1995.

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United States. National Aeronautics and Space Administration., ed. Effect of impact damage and open hole on compressive strength of hybrid composite laminates. National Aeronautics and Space Administration, 1993.

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Book chapters on the topic "Effet de compression"

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Zhang, Yue, Miaoran Du, and Peijie Yin. "Numerical Simulation of the Effect of Joint Parameters on the Mechanical Behaviors of the Fractured Sandstone." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. https://doi.org/10.1007/978-981-97-6238-5_7.

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AbstractJoint parameters affect the mechanical properties of sandstone significantly. This paper investigates the influence of fracture on the mechanical properties of roof plate bedded sandstone in Yuanjue Cave by using the Discrete Fracture Network (DFN) model. The effects of joint density and dip on the mechanical behavior of bedded sandstone under triaxial compression are first examined. And, the fractal dimension is used to quantify the relationship between joint density and strength parameters. The results show that: (1) The compressive strength and elastic modulus of bedded sandstone de
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Polienko, Wladislaw, and Klaus Holschemacher. "Influences of the Effectiveness of a Column Confinement with Textile Reinforced Concrete (TRC)." In Springer Proceedings in Materials. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-72955-3_51.

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AbstractIn the present paper the results of uniaxial compression tests conducted on textile reinforced concrete (TRC)—confined reinforced concrete (RC) columns are reported. By confining the column with TRC, the lateral expansion of the concrete can be impeded. The resulting multiaxial compressive stress state allows to enhance the components axial capacity. Due to the corrosion-resistant textile, the usual concrete cover in reinforced concrete construction is reduced, which allows slender but at the same time highly load-bearing components to be created. Consequently TRC provides a sustainabl
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Chen, Yunkai, Peng Deng, and Yao Wang. "Experimental and Analyses on the Deterioration of Mechanical Properties of Transport Bridges Based on Hot and Humid Marine Environment." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. https://doi.org/10.1007/978-981-97-6238-5_3.

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AbstractThe mechanical properties of in-service concrete bridges in the sea are subject to accelerated deterioration due to the harsh environment in which they are located, which poses a serious challenge to bridge transportation work. Therefore, it is necessary to analyse and study the mechanical property evolution of lightweight aggregate concrete in the marine environment and transport engineering design. In order to study the mechanical property degradation law of nano-modified ceramic concrete under the action of dry and wet cycles and temperature, tests were conducted on nano-modified ce
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Giampaolo, Tony. "Effect of Operating Conditions." In Compressor Handbook: Principles and Practice, 2nd ed. River Publishers, 2023. http://dx.doi.org/10.1201/9781003449874-4.

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Khoa, Nguyen Xuan, Yanuandri Putrasari, Dinh Nam Vu, Nguyen Ho Xuan Duy, and Ocktaeck Lim. "The Effect of Control Strategies on the Gasoline Compression Ignition (GCI) Engine: Injection Strategy, Exhaust Residual Gas Strategy, Biodiesel Addition Strategy, and Oxygen Content Strategy." In Gasoline Compression Ignition Technology. Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8735-8_3.

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Wan, Shengwu, and Xueyuan Cheng. "Finite Element Analysis of Steel Tube Bundle Composite Shear Wall with Different Constructions." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1748-8_25.

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AbstractIn order to study the seismic performance of the steel tube bundle composite shear wall with different constructions. Based on the failure tests of three composite shear wall specimens without steel tube bundle end, with studs and stiffener, a feasible numerical model is established by ABAQUS. The hysteresis curve and energy dissipation coefficient, skeleton curve and ductility of the shear wall were further analyses by varying the axial compression ratio and the spacing of the internal diaphragm. The results show that the stud group and the stiffener group can effectively improve the
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Swami, Narendra Kumar, and Avinash Sharma. "Comparative Study to Analyse the Effect of Speaker’s Voice on the Compressive Sensing Based Speech Compression." In Communications in Computer and Information Science. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-07012-9_42.

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Du, Xiuli, and Liu Jin. "Size Effect in Compressive Failure Behavior of Concrete Columns." In Size Effect in Concrete Materials and Structures. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4943-8_7.

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Mortensen, Jonathan, Jia Jie Wu, Jacob Furst, John Rogers, and Daniela Raicu. "Effect of Image Linearization on Normalized Compression Distance." In Communications in Computer and Information Science. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-10546-3_14.

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Withana, H., and Y. X. Zhang. "Behavior of Hybrid Engineered Cementitious Composites Containing Nanocellulose." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-3330-3_6.

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AbstractNanocellulose (NC) is a promising reinforcing material for cementitious composites, but its effect on the mechanical properties of hybrid engineered cementitious composites (ECCs) has not been studied. In this paper, we investigated a hybrid polyethylene (PE)-steel fibre ECC reinforced with NC and the effect of NC dosages ranging from 0.1% to 0.4% on the compressive strength of the hybrid ECC. The optimum quantity of NC for the best mechanical property of ECC was determined. Enhancement of compressive strength was observed for all the mixes with NC compared with the reference mix, and
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Conference papers on the topic "Effet de compression"

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Scheel, Jeremy E., Paul S. Prevéy, and Douglas J. Hornbach. "The Effect of Surface Enhancement on the Corrosion Properties, Fatigue Strength, and Degradation of Aircraft Aluminum." In CORROSION 2010. NACE International, 2010. https://doi.org/10.5006/c2010-10087.

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Abstract Corrosion, Stress Corrosion Cracking (SCC) and corrosion fatigue failures of high strength aircraft aluminums are costly and potentially catastrophic material problems affecting the aircraft fleet today. As the service lives of aircraft are extended, the increasing inspection and repair of corrosion in aging aircraft adversely affects fleet readiness, the cost of operation, and personnel safety. Shot peening (SP) is a widely used surface enhancement and repair method that produces a shallow layer of compressive residual stress on the surface of components to improve fatigue life and c
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Simons, Sarah, Ryan Cater, Klaus Brun, Grant Musgrove, and Rainer Kurz. "Measured Thermodynamic Effect of Wet Gas Compression." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-75058.

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Significant work has been performed to qualify and quantify the effects of operating with wet gas in a centrifugal compressor system [1, 2]. Of particular interest is the sharp decrease in the isentropic efficiency of the machine when operating with process gas containing various liquid volume fractions. However, it is unknown how much of the performance losses are due to aerodynamic effects, such as blade profile and flow separation losses, rather than the basic thermodynamic effects of compressing a multiphase gas that has a higher density, integral wet-cooling, and contains small amounts of
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Von Deschwanden, Inez, Stefan Braun, and Dieter Brillert. "Effect of Interstage Injection on Compressor Flow Characteristic." In ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ajkfluids2019-4959.

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Abstract Wet compression is a widely used approach to enhance the compressor performance of gas turbine units. For wet compression, a water-spray consisting of tiny droplets is injected into the air inlet duct of the compressor. A multi-phase flow of humid air and water droplets enters the compressor. The continued water evaporation inside the compressor stages causes further cooling during the compression process. Water injection between the compressor stages is called interstage injection. An advantage of interstage injection compared to wet compression is the optimized injection of water at
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Hung, Jung-Chung, Yu-Chung Tsai, and Chinghua Hung. "The Effect of Ultrasonic-Vibration on Upsetting." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95442.

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Ultrasonic-vibration upsetting is a process in which a cylindrical specimen is compressed by an axial force while the ultrasonic vibration is simultaneously applied to the die. Homogenous deformation is difficult to achieve during this process because of the friction at the interface between the specimen and the die. An extrapolated compression test was performed in this study on aluminum alloy specimens to explore the effect of superimposing ultrasonic-vibration during upsetting. Experimental results indicate that ultrasonic-vibration reduced the compressive force when the friction was elimin
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Gotoh, M., and Y. Shibata. "Elastic-Plastic FEM Analysis of Deformations of a Cylinder Subjected to Severe Uniaxial and Bilateral Compression by Flat Plates." In ASME 1991 International Computers in Engineering Conference and Exposition. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/cie1991-0108.

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Abstract Uni-lateral and bi-lateral elastic-plastic compressions of a circular cylinder with three different wall thicknesses by flat plates are numerically analysed by the Finite Element Method (FEM). J2-flow theory (J2F), and J2-Gotoh’s corner theory (J2G) which was previously proposed by one of the authors are used as the constitutive equations. In the case of uni-lateral compression, the cylinder is compressed up to a completely flattened shape, which is considered a kind of plastic forming processes. The deformed shapes and the compressive force are predicted better by J2G than by J2F. Th
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Zhu, Zihuan, Lele Ming, Xinze Zhang, Yadong Wu, and Hua Ouyang. "Numerical Investigation on the Influence of Wet Compression Aerodynamic Performance of Multi-Stage Transonic Compressor." In ASME Turbo Expo 2024: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/gt2024-124213.

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Abstract In this paper, the gas-liquid two-phase flow in a multistage transonic compressor was numerically simulated based on the Euler-Lagrange method. The influence of wet compression aerodynamic characteristics of the compressor was investigated under different spraying conditions (spraying rates and droplet sizes). The results indicated that the compressor choking boundary moves to a smaller flow rate after spraying. Wet compression improves efficiency of the compressor. The evaporation cooling effect of wet compression decreases total temperature ratio and increases the specific power, re
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Roumeliotis, I., and K. Mathioudakis. "Evaluation of Interstage Water Injection Effect on Compressor and Engine Performance." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68698.

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The present paper examines the effect of water injection at the compressor inlet or between stages, on its operation. A wet compression model coupled with an engine performance model is used. The wet compression model produces the compressor performance map when water is present and consists of a one dimensional stage stacking model, coupled with a droplet evaporation model. The effect of water injection on overall performance and individual stage operation is examined. The map generation procedure is embedded in an engine performance model and a study of water injection effect on overall engi
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Huang, Yuan Mao, and Sheng An Yang. "Measurement of the Air Pressure for a Rotary Vane Compressor." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41351.

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This study introduces an experimental method that can measure air pressures in the vane segments when a sliding-vane rotary compressor performs suction and compression phases in stable or unstable rotational speeds. When the air pressures of these two phases can be measured, the intake effect of the compressor’s inlet and the seal effect of the vane segments can be evaluated, respectively. Because a frequency converter provides unstable rotational speeds when it controls rotational speeds of a motor with a compressor, an encoder mounted on the output shaft of the motor was applied to record th
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XUE, JING, and KEDAR KIRANE. "STRENGTH SIZE EFFECT IN FIBER COMPOSITES FAILING UNDER LONGITUDINAL AND TRANSVERSE COMPRESSION." In Thirty-sixth Technical Conference. Destech Publications, Inc., 2021. http://dx.doi.org/10.12783/asc36/35873.

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The size effect in the structural strength of fiber reinforced composites has been typically analyzed for tensile failures. However, this is not true for the equally important compressive failures, primarily due to the difficulties in conducting compression tests on specimens of multiple sizes. These size effects are analyzed here numerically for two important compressive failure mechanisms in composites, viz. (i) fiber kink bands forming under longitudinal compression (typically accompanied by axial splitting matrix cracks) and (ii) inclined shear cracks forming under transverse compression.
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AKIYAMA, Kaisei. "Measurement and analysis of the strength differential effect of 6000-series aluminum alloy sheet." In Material Forming. Materials Research Forum LLC, 2024. http://dx.doi.org/10.21741/9781644903131-123.

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Abstract. The tension-compression asymmetry (TCA, referred to as the strength differential effect, SDE, for annealed materials) of a 1.1-mm-thick 6000-series aluminum alloy sheet, A6116-T4, which is 3-months age hardened is measured using a uniaxial tensile test and an in-plane compression test. It is found that the in-plane compressive flow stress is 1-7 % higher than the uniaxial tensile flow stress; therefore, the material exhibits the SDE. Moreover, a stacked compression test in the normal (through-thickness) direction (ND) of the test sample is also performed to measure the hydrostatic st
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Reports on the topic "Effet de compression"

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Haselbacher, Andreas, Michel Arnal, Maurizio Barbato, et al. Synthèse conjointe «Stockage d’électricité par compression adiabatique d’air» du PNR «Energie». Swiss National Science Foundation (SNSF), 2020. http://dx.doi.org/10.46446/publication_pnr70_pnr71.2020.3.fr.

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La fermeture des centrales nucléaires et le développement de l’énergie solaire et éolienne rendent la production d’électricité plus volatile. De nouveaux systèmes de stockage sont nécessaires pour s’assurer que l’électricité est disponible au moment où elle est nécessaire. Le stockage adiabatique d’air comprimé représente une technologie prometteuse. Il utilise l’excédent de production des installations solaires et éoliennes pour comprimer l’air ambiant et le stocker dans une cavité souterraine. Au besoin, l’air comprimé est à nouveau détendu et entraîne alors une turbine qui produit de l’élec
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Haselbacher, Andreas, Michel Arnal, Maurizio Barbato, et al. Joint synthesis “Electricity storage via adiabatic air compression” of the NRP “Energy”. Swiss National Science Foundation (SNSF), 2020. http://dx.doi.org/10.46446/publication_nrp70_nrp71.2020.3.en.

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La fermeture des centrales nucléaires et le développement de l’énergie solaire et éolienne rendent la production d’électricité plus volatile. De nouveaux systèmes de stockage sont nécessaires pour s’assurer que l’électricité est disponible au moment où elle est nécessaire. Le stockage adiabatique d’air comprimé représente une technologie prometteuse. Il utilise l’excédent de production des installations solaires et éoliennes pour comprimer l’air ambiant et le stocker dans une cavité souterraine. Au besoin, l’air comprimé est à nouveau détendu et entraîne alors une turbine qui produit de l’élec
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Donohue, Marc, Gregory Aranovich, Chao Wang, and Pengfei Xie. Effect of Adsorption Compression on Catalytic Chemical Reactions. Final Report. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1430495.

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Schembri, Philip Edward, Antranik Antonio Siranosian, and Lance Allen Kingston. Hypothesis to Explain the Size Effect Observed in APO-BMI Compression Tests. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1167240.

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Hoppel, Christopher P., and Steven J. De Teresa. Effect of an Angle-Ply Orientation on Compression Strength of Composite Laminates. Defense Technical Information Center, 1999. http://dx.doi.org/10.21236/ada368034.

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Watson, Craig, and Charles Wilson. Effect of image size and compression on one-to-one fingerprint matching. National Institute of Standards and Technology, 2005. http://dx.doi.org/10.6028/nist.ir.7201.

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Weiss, Charles, William McGinley, Bradford Songer, Madeline Kuchinski, and Frank Kuchinski. Performance of active porcelain enamel coated fibers for fiber-reinforced concrete : the performance of active porcelain enamel coatings for fiber-reinforced concrete and fiber tests at the University of Louisville. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/40683.

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A patented active porcelain enamel coating improves both the bond between the concrete and steel reinforcement as well as its corrosion resistance. A Small Business Innovation Research (SBIR) program to develop a commercial method for production of porcelain-coated fibers was developed in 2015. Market potential of this technology with its steel/concrete bond improvements and corrosion protection suggests that it can compete with other fiber reinforcing systems, with improvements in performance, durability, and cost, especially as compared to smooth fibers incorporated into concrete slabs and b
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Lee. L51588 Improved Internal Seals for Pipeline Centrifugal Compressors. Pipeline Research Council International, Inc. (PRCI), 1988. http://dx.doi.org/10.55274/r0010524.

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Reviews current technology of internal labyrinth seals and concludes that internal leakage can reduce compressor efficiencies as much as 3 to 6 percent. Discusses limitations on abradable seals with tighter clearances and the effect of compressor surge on both types of seals. Proposes resiliently mounted seals as subject for future investigation to accommodate rotor movement without excessive seal wear.
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Lease and Jones. PR-266-12213-R01 Minimizing Gas Compressor Lubricating Oil Consumption. Pipeline Research Council International, Inc. (PRCI), 2013. http://dx.doi.org/10.55274/r0010085.

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One of the main sources of fouling in pipelines is related to the use of lubrication (and possibly over-lubrication) in reciprocating compressors. In addition to the obvious cost of lubricants, there are also many hidden costs associated with reciprocating compressor lubrication. Some of these hidden costs include disposal of collected oil, gas storage field contamination, scrubber cleaning, and loss of general pipeline efficiency. Minimizing reciprocating gas compressor lubrication oil consumption can address these costs while at the same time reducing the negative environmental impact associ
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Lu, Wei, Jiong Li, Ye Tian, and Xingang Lu. Effect of ischemic compression on myofascial pain syndrome: a systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2022. http://dx.doi.org/10.37766/inplasy2022.4.0066.

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