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Journal articles on the topic 'Extrusion'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Ren, Zhong. "Comparison Study on the Effect of Traction Speed on the GAE and Traditional Extrusion Forming of Four-Lumen Plastic Micro-Catheter." Key Engineering Materials 881 (April 2021): 39–44. http://dx.doi.org/10.4028/www.scientific.net/kem.881.39.

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In this paper, the effect of traction speed on the four-lumen plastic micro-catheter (FLPMC) was numerically studied. Moreover, the numerical simulations of FLPMC based on two kinds of extrusions, i.e., traditional extrusion and gas-assisted extrusion were performed and compared. Numerical results show that with the increase of traction speed, the sizes of FLPMC for both extrusions all decrease. The sizes of FLPMC based on gas-assisted extrusion are sightly larger than those of the traditional extrusion. To ascertain the reasons, the flow velocities, pressure, shear stress and first normal str

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2

Lu, W. L., Y. Wang, and Jin Tao Hai. "The Effects of Extrusion Ratio and Friction on Material Microstructures during Sandglass Extrusion Process." Materials Science Forum 551-552 (July 2007): 383–86. http://dx.doi.org/10.4028/www.scientific.net/msf.551-552.383.

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Sandglass extrusion is an ultrafine grain size method. Due to the repetitive and multiple extrusions, large strain can be accumulated and ultrafine grain size can be obtained. Some factors can affect the experimental results of sandglass extrusion, such as extrusion ratio, number of extrusion, extrusion temperature, friction and free space in mould cavity etc. These factors have different effects on material microstructures, properties and defects. In this paper, the effects of extrusion ratio and friction on material microstructures during sandglass extrusion process have been discussed and t

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3

Yang, Jun Ying, Bao Yun Song, Hai Shi Ning, and Rong Fu. "Microstructure of AZ31 Magnesium Alloy Produced by the CONFORM Process under Different Extrusion Wheel Velocities." Advanced Materials Research 189-193 (February 2011): 2609–12. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.2609.

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It is widely known that the continuous extrusion forming (CONFORM) process can produce ultra-long seamless products of various cross-sections for aluminum, copper and their alloys. In this paper, the continuous extrusion of AZ31 magnesium alloy is achieved. The effect of extrusion wheel velocity on microstructure of extrusions is investigated. The results indicate that grain refinement is realized during CONFORM process. As the extrusion wheel velocity increases, the grain size at the center of a cross section perpendicular to the extrusion direction of an extrusion increases, and the grain st

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4

Lu, W. L., Y. Wang, and Jin Tao Hai. "The Effects of Free Space in Mould Cavity on Sandglass Extrusion." Materials Science Forum 475-479 (January 2005): 2999–3002. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.2999.

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Sandglass extrusion is an ultrafine grain size method. Due to the repetitive and multiple extrusions, large strain will be accumulated and ultafine grain size can be obtained. There are some factors that can affect the experimental result of sandglass extrusion. Among these factors, free space in mould cavity is very important, which can affect the forming of the fold during the extrusion. In this paper, the effects of free space in mould cavity on sandglass extrusion have been discussed and theory analysis and experimental results have been reported.

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Kim, Tae Bum, Masakazu Tane, Shinsuke Suzuki, Takuya Ide, Hiroshi Utsunomiya, and Hideo Nakajima. "Improvement of Strength of Lotus-Type Porous Aluminum through ECAE Process." Materials Science Forum 695 (July 2011): 263–66. http://dx.doi.org/10.4028/www.scientific.net/msf.695.263.

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Lotus-type porous aluminum with cylindrical pores oriented in one direction was deformed by Equal Channel Angular Extrusion (ECAE) through a 150° die with sequential 180° rotations, and the pore morphology and Vickers hardness after the extrusion were investigated. The Vickers hardness increases with increasing number of passes in the extrusions both parallel and perpendicular to the pore direction, accompanied by the decrease of porosity. The densification occurs more easily in the perpendicular extrusions than in the parallel extrusions, and the large deformation by the densification gives r

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6

Zhao, Xiao Lian, Ning Ning Zhao, and Na Chen. "Effect of Extrusion Size on Forming Process in Equal Channel Angular Pressing." Applied Mechanics and Materials 275-277 (January 2013): 2171–75. http://dx.doi.org/10.4028/www.scientific.net/amm.275-277.2171.

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In order to meet the industrial demands for large-sized bulk ultrafine-grained materials, which were prepared by severe plastic deformation, the law curves of equivalent strain, equivalent stress and load of different-sized extrusions had been gotten by the finite element simulation of ECAP. The extrusion size has little effect on the values and distribution law of equivalent strain as well as the values of equivalent stress. With the increase of extrusion size, the distribution uniformity of equivalent stress decreases, and the extrusion load increases. Although the ECAP of the large-sized ex

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7

Myers, Amy J., Claire E. Harnett, Eoghan P. Holohan, Thomas R. Walter, and Michael J. Heap. "The geometric spectrum of lava domes and spines." Volcanica 7, no. 2 (2024): 665–84. http://dx.doi.org/10.30909/vol.07.02.665684.

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Extrusion of viscous lava produces domes and spines, collapses of which pose a significant local hazard. Understanding extrusion processes and probabilistic hazard estimation require comprehensive datasets of geometric parameters. We introduce Morphology of Viscous Extrusions (MoVE), a collation of 323 observations of height and width from 80 extrusions at 46 volcanoes globally with compositions spanning basaltic through rhyolitic. Filtering this dataset for sample size, age, and time series overrepresentation reduces the composition range to basaltic-andesitic through dacitic, for which we do

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8

Jiang, Qifeng, Ramdane Boulahia, Fahmi Zaïri, et al. "Microstructure and Mechanical Properties of Severely Deformed Polypropylene in ECAE (Equal Channel Angular Extrusion) via Routes A and C." Polymers 14, no. 23 (2022): 5287. http://dx.doi.org/10.3390/polym14235287.

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Equal channel angular extrusion (ECAE) is a solid-state extrusion process for modifying microstructures via severe plastic deformation without modifying the specimen cross section. In this study, changes in the microstructure and mechanical properties of polypropylene resulting from extrusion orientation route A (no rotation between extrusions) and extrusion orientation route C (a rotation of 180° between extrusions) are investigated using a 90° die-angle tooling outfitted with back pressure. Important differences are reported for the ECAE-induced deformation behavior between the two processin

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9

Xue, Yong, Zhi Min Zhang, and Li Hui Lang. "Effect of Forward Extrusion and Heat Treatment on Microstructure and Mechanical Properties of as-Cast ZK60 Magnesium Alloy." Advanced Materials Research 148-149 (October 2010): 332–37. http://dx.doi.org/10.4028/www.scientific.net/amr.148-149.332.

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In the present research, the influences of different extrusion ratios (15, 30, 45, 60, and 75), extrusion temperatures (300 , 340 , 380 , 420 , and 460 ), and subsequent heat treatment on the mechanical properties and microstructure of as-cast ZK60 magnesium alloy have been investigated through the tensile tests and via metallographic observation. The results show that forward extrusion process can refine the microstructure of as-cast ZK60 alloy effectively. If as-cast ZK60 alloys have been extruded with the extrusion ratio 45 at 380 ,420 and 460 , respectively, and then post-heat treatment wa

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10

Bocato, Jessica Rico, Flávia Maria Cheffer Nory, Josimar Rosa Francisco, et al. "Interdisciplinary Orthodontic Treatment to Reestablishment Smile Function and Aesthetics." Journal of Health Sciences 22, no. 3 (2021): 167–72. http://dx.doi.org/10.17921/2447-8938.2021v22n3p167-172.

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AbstractExtrusive tooth movements are an important resource in orthodontic treatment and allow the manipulation of teeth and periodontal tissues. They can be performed quickly or slowly, depending on the patient’s need. Rapid extrusion is indicated for cases in need of prosthetic preparation or restoration, where the bone and gingival tissues are intact, such as horizontal and oblique fractures, coronary or external root resorption, iatrogenic perforations (trepanations) and the presence of subgingival caries. The aim of this study is to describe the treatment of a patient who had a coronary f

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Uetani, Yasuhiro, Ryotaro Nagata, Hidetoshi Takagi, Kenji Matsuda, and Susumu Ikeno. "Effect of Granule Size in Semi-Solid Slurry on Rheo-Extrusion of A7075 Aluminum Alloy." Materials Science Forum 561-565 (October 2007): 291–94. http://dx.doi.org/10.4028/www.scientific.net/msf.561-565.291.

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Rheo-extrusions of A7075 aluminum alloy were carried out utilizing semi-solid slurries with different solid granule sizes, which were made by a simple method combined a thin upright tube with a water-cooled tube. Every structure of slurries was granular and average solid granule sizes could be controlled by 0.05 to 0.11mm. These slurries were extruded to round bars at extrusion ratio of 36 and press ram speed of 10mm/s mainly, just after cooling to 833K ( fs > 0.9 ). All of the slurries could easily be extruded to bars with smooth surfaces at much low extrusion forces than those of hot-extr

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12

Lee, Dae-Hee. "Incidence and Extent of Graft Extrusion following Meniscus Allograft Transplantation." BioMed Research International 2018 (2018): 1–11. http://dx.doi.org/10.1155/2018/5251910.

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Background. The incidence and extent of graft extrusion after meniscus allograft transplantation (MAT) may differ in patients undergoing medial and lateral meniscus transplantation due to the use of different surgical techniques. This meta-analysis was therefore designed to quantify the extent and incidence of graft extrusion after meniscus allograft transplantation. Methods. Following preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines, all studies reporting absolute extrusion, relative percentage of extrusion (RPE), or frequency of major extrusions (>3 m

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13

Ren, Zhong, and Xing Yuan Huang. "Numerical Comparisons on the Effects of Wall Thickness on Extrudate Swell of Traditional Extrusion and Gas-Assisted Extrusion for Plastic Microtubules." Materials Science Forum 956 (June 2019): 253–59. http://dx.doi.org/10.4028/www.scientific.net/msf.956.253.

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In this study, the effect of wall thickness on the extrudate swell of plastic microtubules was investigated by using the finite element numerical method. For the traditional extrusion and gas-assisted extrusion, under the same process parameters, the extrudate swell ratios of plastic microtubules with the different wall thicknesses were all obtained. Moreover, to analyze the difference between the traditional extrusion and gas-assisted extrusion, the physical fields distributions, such as flow velocities, pressure and the stresses distributions of plastic microtubules with the different wall t

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14

Aoki, Koshiro, Akira Azushima, and Yoshiyuki Kondo. "Fatigue Property of High-Strength Carbon Steel Deformed by Repetitive Side Extrusion Process." Materials Science Forum 475-479 (January 2005): 245–48. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.245.

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The development of an ultrafine grained carbon steel during repetitive shear deformation of side extrusion and the properties after heat treatment were investigated. Side extrusions were carried out at room temperature and the used material was 0.50% carbon steel. The repetitive side extrusions with a constant lateral pressure were carried out up to 3 passes without rotation. The specimens of these steels after 3 passes were annealed at a constant temperature of 600°C changing the treatment time. After side extrusion and heat treatment, the fatigue property was better than that of the as-recei

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15

Ganapathy, Aravindh S., Myron S. Powell, and James L. Pirkle. "Extrusion of both Superficial and Deep Cuffs of a Functional Double-Cuff Peritoneal Dialysis Catheter after Significant Weight Loss." Case Reports in Nephrology and Dialysis 11, no. 2 (2021): 190–94. http://dx.doi.org/10.1159/000515049.

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Extrusion of the superficial cuff of a peritoneal dialysis (PD) catheter is an uncommon complication that may be associated with infection or malfunction. However, extrusion of both the superficial and deep cuffs of a double-cuff catheter is rare and uniformly associated with failure and peritonitis. We report a case of a presternal-type PD double-cuff catheter with extrusion of both cuffs through an abdominal exit site after 6 years of use that has remained functional, which has not been previously reported. In this case, the patient had achieved a 60-kg weight loss resulting in retraction of

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16

Carneiro, Olga S., Júlio C. Viana, and João M. Nóbrega. "Processing-Microstructure-Properties Relationships in Extrusion of Thermoplastics." Materials Science Forum 514-516 (May 2006): 833–37. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.833.

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In this work, a rectangular polypropylene profile was produced with several different extrusion conditions, in order to identify the most relevant processing variables determining its morphology and mechanical properties and to establish relationships between them. A Taguchi Design of Experiments (DOE) technique considering two levels for each variable (extrusion temperature, extrusion throughput, drawdown ratio and distance between the die and the cooling bath) defined the set of extrusions runs carried out. The resulting plastic profiles were characterized in terms of their microstructure an

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17

Zhang, Xiaohui, Xingyuan Huang, Bin Liu, and Shuiquan Chen. "Study on the Melt Rheological Characterization of Micro-Tube Gas-Assisted Extrusion Based on the Cross-Scale Viscoelastic Model." Polymers 16, no. 7 (2024): 973. http://dx.doi.org/10.3390/polym16070973.

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In the micro-tube gas-assisted extrusion process, flow theories ignoring cross-scale viscoelastic variations fail to effectively characterize the rheological state of the melt. To investigate the impact of cross-scale viscoelastic variation on the quality of the micro-tube gas-assisted extrusion, a 3D multiphase flow extrusion model incorporating a double gas-assisted layer was developed. Subsequently, we modified the DCPP constitutive equations based on the cross-scale factor model. Both the traditional and gas-assisted extrusions were simulated under macroscale and cross-scale models using t

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18

Zhang, Kai, Knut Marthinsen, Bjørn Holmedal, Jesper Friis, Tanja Pettersen, and Antonio Segatori. "Characterization and Modelling of the Microstructure and Texture Evolution in AlMgSi-Extrusions." Materials Science Forum 879 (November 2016): 1239–44. http://dx.doi.org/10.4028/www.scientific.net/msf.879.1239.

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The properties and surface appearance of aluminium extrusion are critically dependent on the microstructure and texture of the extruded profiles, and the requirements with respect to these aspects may vary with applications. Moreover it is often a challenge to produce extrusions with a consistent and homogenous grain structure and texture along as well as through the cross section of the profiles. It is thus vital to understand and be able to predict (model) how different microstructures and textures are formed and how they evolve during and after extrusion. In the present work a model framewo

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19

Spoerk, Martin, Florian Arbeiter, Ivan Raguž, Clemens Holzer, and Joamin Gonzalez-Gutierrez. "Mechanical Recyclability of Polypropylene Composites Produced by Material Extrusion-Based Additive Manufacturing." Polymers 11, no. 8 (2019): 1318. http://dx.doi.org/10.3390/polym11081318.

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Due to a lack of long-term experience with burgeoning material extrusion-based additive manufacturing technology, also known as fused filament fabrication (FFF), considerable amounts of expensive material will continue to be wasted until a defect-free 3D-printed component can be finalized. In order to lead this advanced manufacturing technique toward cleaner production and to save costs, this study addresses the ability to remanufacture a wide range of commercially available filaments. Most of them either tend to degrade by chain scission or crosslinking. Only polypropylene (PP)-based filament

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20

Foydl, Annika, Insa Pfeiffer, Matthias Kammler, et al. "Manufacturing of Steel-Reinforced Aluminum Products by Combining Hot Extrusion and Closed-Die Forging." Key Engineering Materials 504-506 (February 2012): 481–86. http://dx.doi.org/10.4028/www.scientific.net/kem.504-506.481.

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Aluminum matrix composite extrusions reinforced with wires made of high strength stainless steel represent an innovative material concept for lightweight structures. The use of reinforcing elements should improve the mechanical properties and the performance of lightweight structures. This study deals with the process chain of extrusion and die forging to manufacture steel-reinforced products. The production of discontinuously-reinforced, semi-finished aluminum profiles by co-extrusion is in focus on the extrusion part. The material flow is analysed in order to understand, and further to influ

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21

Wang, Tianhao, Bharat Gwalani, Joshua Silverstein, et al. "Microstructural Assessment of a Multiple-Intermetallic-Strengthened Aluminum Alloy Produced from Gas-Atomized Powder by Hot Extrusion and Friction Extrusion." Materials 13, no. 23 (2020): 5333. http://dx.doi.org/10.3390/ma13235333.

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An aluminum (Al) matrix with various transition metal (TM) additions is an effective alloying approach for developing high-specific-strength materials for use at elevated temperatures. Conventional fabrication processes such as casting or fusion-related methods are not capable of producing Al–TM alloys in bulk form. Solid phase processing techniques, such as extrusion, have been shown to maintain the microstructure of Al–TM alloys. In this study, extrusions are fabricated from gas-atomized aluminum powders (≈100–400 µm) that contain 12.4 wt % TM additives and an Al-based matrix reinforced by v

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22

Zhu, Tian-Wang, Xian-Xiang Xiang, Chun-Hui Li, Rui-Xin Li, and Nan Zhang. "Predictive factors for coronal and sagittal graft extrusion length after using tendon autograft for medial meniscus reconstruction." World Journal of Orthopedics 15, no. 11 (2024): 1036–46. http://dx.doi.org/10.5312/wjo.v15.i11.1036.

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BACKGROUND Meniscus extrusion occurs in most elderly individuals and most patients after meniscus allograft transplantation. The risk factors and correlative factors of meniscus extrusion have been extensively studied. However, for using tendon autograft for meniscus reconstruction, both graft type and surgical method are different from those in previous studies on meniscus extrusion. AIM To identify predictive factors for coronal and sagittal graft extrusion length after using tendon autograft for medial meniscus reconstruction. METHODS Ten patients who underwent medial meniscus reconstructio

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Ye, Sixian, Huangjun Zhou, Xingyu Lyu, Hao Feng, Min Liu, and Cai Wen. "Should the vent hole of posterior implant crowns be placed on the lateral surface? An in vitro study of the hydrodynamic feature of cement extrusion and retention ability." PLOS ONE 17, no. 10 (2022): e0276198. http://dx.doi.org/10.1371/journal.pone.0276198.

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Although placing a vent hole on the occlusal surface of the implant crown can reduce cervical marginal cement extrusion, it has disadvantages. Transferring the hole to the buccal or lingual surface of the posterior implant crown could therefore be an alternative solution. This study investigated the effect of transferring the vent hole to the lateral side of the implant posterior crown on the hydrodynamics of excess cement extrusion and the crown’s retention ability. Specially fabricated posterior implant crowns were divided into five groups: crowns with an occlusal hole (OH), occlusal lateral

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Noguchi, Akinori. "Extrusion Cooking." JSM Mycotoxins 67, no. 1 (2017): 33–42. http://dx.doi.org/10.2520/myco.67-1-2.

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Sriram, S., and C. J. Van Tyne. "Criterion for Prevention of Central Bursting in Forward Extrusions Through Spherical Dies Using the Finite Element Method." Journal of Manufacturing Science and Engineering 124, no. 1 (2001): 65–70. http://dx.doi.org/10.1115/1.1413776.

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Spherical dies are increasing in popularity in the cold-forming industry because of the ease in subsequent secondary operations. This paper presents criteria curves, calculated using the finite element method, to avoid central bursting or internal chevrons in forward extrusions through spherical dies. Critical values of mean stress at the centerline of the extrusion are used as failure criteria to distinguish between acceptable and unacceptable die designs. These failure criteria are conservative in that the critical step for central bursting is considered to be the formation of a microvoid du

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Kaczor, Daniel, Krzysztof Bajer, Aneta Raszkowska-Kaczor, Grzegorz Domek, Piotr Madajski, and Pawel Szroeder. "The Influence of Multiple Extrusions on the Properties of High Filled Polylactide/Multiwall Carbon Nanotube Composites." Materials 15, no. 24 (2022): 8958. http://dx.doi.org/10.3390/ma15248958.

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High filled polylactide/multiwall carbon nanotube composites were subjected to multiple extrusions using single-screw and twin-screw extruders. Samples of the processed composites were characterized by SEM, XRD, Raman, and FTIR spectroscopy. Thermal and rheological properties were investigated by DSC and MFR analyses. Subsequent extrusions resulted in decreased torque and process efficiency, which is a consequence of the viscosity reduction of PLA. Thermal and rheological properties of composites changed after each extrusion as well. As revealed by DSC analyses, cold crystallization temperatur

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Lukban, James C., Roger D. Beyer, and Robert D. Moore. "Incidence of Extrusion Following Type I Polypropylene Mesh “Kit” Repairs in the Correction of Pelvic Organ Prolapse." Obstetrics and Gynecology International 2012 (2012): 1–8. http://dx.doi.org/10.1155/2012/354897.

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Introduction and Hypothesis. We sought to determine the mesh extrusion (vaginal exposure) rates and subject outcomes following IntePro (Type I polypropylene) mesh “kit” repairs for vaginal prolapse.Methods. Data were pooled from two prospective multicenter studies evaluating the safety and efficacy of the Perigee and Apogee (American Medical Systems, Minnetonka, Minn, USA) to treat anterior and posterior/apical prolapses, respectively. Extrusions involving the anterior compartment (AC) or posterior compartment/apex (PC/A) were recorded.Results. Two hundred sixty women underwent mesh placement,

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Lin, T. H., S. R. Lin, and X. Q. Wu. "Micromechanics of an Extrusion in High-Cycle Fatigue With Creep." Journal of Applied Mechanics 57, no. 4 (1990): 815–20. http://dx.doi.org/10.1115/1.2897646.

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Extrusions and intrusions often are sites of fatigue cracks. The extent of extrusions is important in fatigue crack initiation. Metals often are subject to fatigue loadings at elevated temperatures. At temperatures below one half of the melting temperature slip is the main mechanism of inelastic deformation. In this study, an aluminum polycrystal loaded in this temperature range is considered. A most favorably oriented crystal located at a free surface of a f.c.c. polycrystal subject to creep under cyclic tension and compression of high-cycle fatigue is considered. An extrusion in this crystal

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Wilson, Robert, Nigel A. Stone, and Mark A. Gibson. "Extrusion of CP Grade Titanium Powders Eliminating the Need for Hot Pre-Compaction via Hot Isostatic Pressing." Materials Science Forum 534-536 (January 2007): 801–4. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.801.

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Extrusion is a way to produce near net shape components from CP grade titanium powders of optimum density with minimum porosity and acceptable mechanical properties. Chemically pure, hydride/dehydride titanium powders were cold pre-compacted and extruded at 850oC under an argon atmosphere. The extrusion stress required was ~450MPa. To characterize the extrusions, the porosity distribution, qualitative microstructure and tensile properties were evaluated and compared with conventional extruded wrought titanium. Extrusion occurred after the green billets were upset to ~100% of theoretical densit

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Zhou, Ming, Jianyong Cao, Fulin Yu, and Xia Wei. "Evaluation of Magnesium Extrusion Production." Materials Science Forum 488-489 (July 2005): 483–86. http://dx.doi.org/10.4028/www.scientific.net/msf.488-489.483.

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Compared with any other pressure processing methods, extrusion is more prone to develop the plasticity of the metal. Extrusions have much better size precision and surface quality than products by rolling and forging. As one-shot molding process, extrusion can eliminate some machining. In addition, extrusions have very high strengths and elongations because of their compact interior structures and fine grains. This paper summarizes some experiences and plans in extrusion production of CQMST(Chongqing Magnesium Science & Technology Co.Ltd). Magnesium, a plentiful element with density of 1.7

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Valberg, Henry. "Extrusion welding in aluminium extrusion." International Journal of Materials and Product Technology 17, no. 7 (2002): 497. http://dx.doi.org/10.1504/ijmpt.2002.001317.

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KAMEDA, HIROSHI. "Rubber Extrusion. Formulation of Extrusion." NIPPON GOMU KYOKAISHI 69, no. 5 (1996): 365–74. http://dx.doi.org/10.2324/gomu.69.365.

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Fathy, A., M. Abdelhameed, and F. Shehata. "Effect of Some Manfacturing Parameters on Machining of Extruded Al-Al2O3 Composites." ISRN Materials Science 2012 (April 17, 2012): 1–6. http://dx.doi.org/10.5402/2012/748734.

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A wide range of particulate metal matrix composites (PMMCs) of alumina and aluminum powders was formed using powder metallurgy techniques followed by extrusions at various extrusion ratios. The machining characteristics of the extruded PMMC were investigated. Results showed significant effects of weight fractions of reinforcement and extrusion ratios on tool wear and surface integrity of machined surface. The wear rate of cutting tool decreased rapidly with increasing the cutting parameters: cutting speed, feed, and depth of cut, however cutting speed is shown to be more effective. Sudden brea

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Kartha, S., K. Young, and S. Mohan. "Complications of Medialization Laryngoplasty (Thyroplasty Type-I)." International Journal of Phonosurgery & Laryngology 1, no. 1 (2011): 1–3. http://dx.doi.org/10.5005/jp-journals-10023-1001.

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ABSTRACT Objective Medialization laryngoplasty (formally type 1 thyroplasty) is an accepted treatment for unilateral vocal fold paralysis or paresis. The objective of this paper is to ascertain the complications following medialization laryngoplasty in patients with particular reference to implant extrusion. Study design The records of 85 patients who underwent medialization laryngoplasty were retrospectively reviewed from January 2001 to July 2009. Results There were 3 implant extrusions noted only in female patients with cartilage removal technique. Conclusions Implant extrusion rate followi

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Aravas, N., and R. M. McMeeking. "An Asymptotic Analysis of Three-Dimensional Extrusion." Journal of Applied Mechanics 56, no. 3 (1989): 519–26. http://dx.doi.org/10.1115/1.3176121.

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A new method of analysis of three-dimensional metal extrusion using asymptotic perturbation methods is presented in this paper. The plasticity model used depends on the first and second invariants of the stress tensor and covers a wide range of constitutive models commonly used for the analysis of metal-forming operations. It is shown that the three-dimensional extrusion problem can be approximated, to leading order, by a problem of generalized plane-strain. The results of the asymptotic analysis together with the finite element method are used to obtain approximate solutions for extrusions of

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Kim, Hanwook, Seong-Il Bin, Jong-Min Kim, Bum-Sik Lee, and Dong-Wook Sohn. "Progression of Allograft Extrusion in Both the Coronal and Sagittal Planes at Midterm Follow-up After Medial Meniscal Allograft Transplant." Orthopaedic Journal of Sports Medicine 9, no. 2 (2021): 232596712097235. http://dx.doi.org/10.1177/2325967120972351.

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Background: Although many studies have examined allograft extrusion after medial meniscal allograft transplant (MMAT), it is unclear whether allograft extrusion progresses at midterm follow-up. Hypothesis: After MMAT, allograft extrusion would not progress during the midterm follow-up period. Study Design: Case series; Level of evidence, 4. Methods: A total of 30 patients who underwent MMAT between December 1996 and March 2016 were enrolled. Allograft extrusion was measured on magnetic resonance imaging scans obtained at 6 weeks, 1 year, and 3 to 7 years postoperatively. In the coronal plane,

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Kirkham, Chris, Joe Cartwright, Claudia Bertoni, and Pieter Van Rensbergen. "The genesis of a giant mud canopy by catastrophic failure of a thick evaporite sealing layer." Geology 48, no. 8 (2020): 787–91. http://dx.doi.org/10.1130/g47430.1.

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Abstract Three-dimensional seismic imaging and well calibration reveal a large allochthonous mud edifice that is composed of several mud extrusions and covers an area &gt;740 km2 on the outer shelf slope of the Nile Delta. The allochthonous material was sourced from beneath the ∼1-km-thick Messinian evaporites in the Eastern Mediterranean and extruded synchronously as eight large mud volcanoes directly on top of the Messinian evaporites in a catastrophic remobilization event at the end of the Messinian salinity crisis. These large extrusive flows coalesced to form a single edifice with an

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Peng, Zhi, and Terry Sheppard. "Prediction of Static Recrystallisation after Extrusion of Shaped Aluminium Sections." Materials Science Forum 467-470 (October 2004): 407–20. http://dx.doi.org/10.4028/www.scientific.net/msf.467-470.407.

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Extrusions experience large deformations at discontinuities when they traverse the die land, leading to considerable modifications to the average deformation parameters when compared to the remainder of the extrusion. The distribution of structure is therefore greatly inhomogeneous. Reference to both empirical and physical models of the recrystallisation process indicate that nucleation and growth will differ at these locations in those alloys that are usually solution treated and aged subsequent to the deformation process. Since static recrystallisation has a significant influence on many of

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Tanaka, Tatsuya. "Extrusion." Seikei-Kakou 21, no. 7 (2009): 361–70. http://dx.doi.org/10.4325/seikeikakou.21.361.

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Shiromoto, Seiji. "Extrusion." Seikei-Kakou 22, no. 7 (2010): 326–32. http://dx.doi.org/10.4325/seikeikakou.22.326.

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Tanoue, Shuichi. "Extrusion." Seikei-Kakou 18, no. 9 (2006): 669. http://dx.doi.org/10.4325/seikeikakou.18.669_1.

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Tanaka, Tatsuya. "Extrusion." Seikei-Kakou 20, no. 7 (2008): 375–85. http://dx.doi.org/10.4325/seikeikakou.20.375.

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Beygelzimer, Y., D. Prilepo, R. Kulagin, et al. "Planar Twist Extrusion versus Twist Extrusion." Journal of Materials Processing Technology 211, no. 3 (2011): 522–29. http://dx.doi.org/10.1016/j.jmatprotec.2010.11.006.

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Manosalvas Quiroz, Luis Armando, Clara Elena Villacrés, and Richard Taimal. "Efecto de la humedad de alimentación y temperatura de extrusión sobre el contenido nutricional de un snack a base de maíz, chocho y papa." Revista Bases de la Ciencia. e-ISSN 2588-0764 4, no. 3 (2019): 67. http://dx.doi.org/10.33936/rev_bas_de_la_ciencia.v4i3.1911.

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Los efectos de diferentes parámetros operativos de extrusión en equipos de un solo tornillo sobre los cambios nutricionales del snack fueron estudiados. Los parámetros de extrusión investigados fueron: temperatura del barril (110 – 140ºC), contenido de humedad (15% - 20%) y matriz alimentaria: maíz (Zea mays), chocho (Lupinus mutabilis Sweet) y papa (Solanum tuberosum) en proporción 80/10/10 y 70/15/15 (p/p). Los snacks que registraron mayor contenido nutricional fueron con la matriz en proporción 70/15/15 a 15% de humedad y extruida a 110°C, con valores de humedad 6.06%, proteína 18.69%, gras

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Jha, Shilpa, Kate Atkinson, Matthew R. McFegan, et al. "Assessment of Midterm Functional Outcomes Following Talar Extrusion Injuries." Foot & Ankle Orthopaedics 7, no. 1 (2022): 2473011421S0026. http://dx.doi.org/10.1177/2473011421s00266.

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Category: Ankle; Hindfoot; Trauma Introduction/Purpose: Open talar dislocations with complete or partial extrusion of the talus are rare, high energy injuries associated with major complications including infection, avascular necrosis and post-traumatic arthritis. These are debilitating injuries with significant long-term effects including avascular necrosis and post traumatic arthritis. Functional outcome data in the literature is limited and predominantly consists of case reports and few single centre case series. Historically these injuries have been treated with talectomy and tibiocalcanea

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SCHREK, Alexander, Branislav VANKO, and Pavol SEJČ. "FORMING OF A BIMETALLIC ELEMENT FOR THE RESISTANCE ELEMENT SOLDERING METHOD." Journal of Metallic Materials 74, no. 2 (2022): 8–20. http://dx.doi.org/10.32730/imz.2657-747.22.2.2.

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The joining of sheet metal parts produced in the material combination of Fe-Fe, Fe-Al as well as Fe-thermoplastic and Al-thermoplastic can be realized by the Resistance Element Soldering (RES). Extruded bimetallic elements were used to form the overlap joint. The semi-finished product for extrusions was a Cu 99.9 tube with dimensions φ6 × 0.5 mm and length 9 mm, filled with Sn60Pb40 solder. “T” shaped overprints were produced in two ways. Simulation in the ANSYS software environment was chosen to optimize, select the appropriate forming process, and design the geometry of the functional parts

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Laohachaiaroon, Pratchawin, Bancha Samruajbenjakun, and Ekachai Chaichanasiri. "Initial Displacement and Stress Distribution of Upper Central Incisor Extrusion with Clear Aligners and Various Shapes of Composite Attachments Using the Finite Element Method." Dentistry Journal 10, no. 6 (2022): 114. http://dx.doi.org/10.3390/dj10060114.

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A clear aligner is an esthetic and more comfortable option for patients who need orthodontic treatment. However, some types of tooth movement, such as extrusion, are difficult with this tool. Therefore, composite attachments have been suggested to improve tooth movement. This study aims to evaluate the initial displacement and stress distribution during upper central incisor extrusion using the conventional composite attachments. Maxillary models with the upper teeth, clear aligners, and composite attachments placed on the labial surface of the upper right central incisor were constructed. Fou

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Patel, Yashwant Kumar. "EXTRUSION TECHNOLOGY: AN EFFICIENT TECHNOLOGY IN FOOD PROCESSING." International Journal of Multidisciplinary Research Configuration 2, no. 4 (2022): 01–20. http://dx.doi.org/10.52984/ijomrc2401.

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Extrusion technology is an efficient method of producing varieties of new food products with minimal loss of nutrients. It is a food processing technique that integrates numerous unit activities such as mixing, heating, kneading, shearing, shaping, and forming into a single process. Food extrusion is a type of extrusion that is used in the food processing industry. It is a procedure in which a mixture of materials is driven through an aperture in a perforated plate or die with a food-specific pattern, and then cut to size by blades. The extruder is the machine that drives the mixture through t

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Bouaziz, Amira, Marwa khemakhem, Valérie Massardier, and Mohamed Jaziri. "The effect of extrusion reprocessing cycles on the structure and properties of nano-silica reinforced polypropylene/ethylene-propylene-rubber composites." Journal of Composite Materials 52, no. 30 (2018): 4219–30. http://dx.doi.org/10.1177/0021998318777863.

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In this study, the effect of repeated extrusion processing cycles on the structure and properties of polypropylene/ethylene-propylene-rubber/nano-silica composites was investigated. The recycling process was simulated by performing three extrusion runs, using a high shear twin screw extruder by varying the speed screw rotation (300, 800, and 1200 r/min), in order to get better understanding of the multi recycling effects. For comparative purposes, neat polypropylene/ethylene-propylene-rubber was also reprocessed under the same conditions as a reference material. From the morphological analyses

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Schwartz, Michal, Dan Gheorghe, Robert Ciocoiu, and Ion Ciucă. "Die Failures in Copper Hot Extrusion." Advanced Materials Research 1114 (July 2015): 56–61. http://dx.doi.org/10.4028/www.scientific.net/amr.1114.56.

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Low life service of steel dies used in copper extrusion brought us to inspect several discarded copper hot extrusion dies in order to identify failures and failure mechanisms. The investigations performed are mainly hardness tests and microscopic investigations. The profiles extruded are circular, rectangular and hexagonal. It was observed that die design is not at fault; rather the die material is to blame for low life service of the tool. Discarded extrusion dies after copper hot extrusions were investigated. The failure of the dies was first observed by naked eye and the observations record

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