Academic literature on the topic 'Disk refiner'

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Journal articles on the topic "Disk refiner"

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Lee, Ji-Young, Chul-Hwan Kim, Sol Kwon, Min-Seok Lee, and Byung-Gul Min. "Representative Effects of Valley Beater and Disk Refiner on Pulp Fibers." Journal of Korea Technical Association of the Pulp and Paper Industry 48, no. 5 (2016): 37. http://dx.doi.org/10.7584/jktappi.2016.10.48.5.37.

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Zhu, J. Y., and Gary C. Myers. "Kraft pulp from budworm-infested Jack pine." Holzforschung 60, no. 4 (2006): 383–88. http://dx.doi.org/10.1515/hf.2006.060.

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Abstract This study evaluated the quality of kraft pulp from budworm-infested jack pine. The logs were classified as merchantable live, suspect, or merchantable dead. Raw materials were evaluated through visual inspection, analysis of the chemical composition, SilviScan measurement of the density, and measurement of the tracheid length. Unbleached pulps were then refined using a laboratory disk refiner. The mechanical and optical properties of handsheets made from the refined pulps were evaluated. Although budworm galleries may affect the physical integrity of the wood, they have no effect on
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Fukuoka, Shigeru, Tadahiro Sugawara, Osamu Kawase, and Kazuyuki Fujita. "Optimazation of the Double Disk Refiner for Stock Preparation. Reduction of Energy Consumption by Reducing the Number of Refiners." JAPAN TAPPI JOURNAL 52, no. 11 (1998): 1568–74. http://dx.doi.org/10.2524/jtappij.52.1568.

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JOHNSON, DONNA, MARK PAPADIS, MICHAEL BILODEAU, BRUCE CROSSLEY, MARC FOULGER, and PIERRE GELINAS. "Effects of cellulosic nanofibrils on papermaking properties of fine papers." TAPPI Journal 15, no. 6 (2016): 395–402. http://dx.doi.org/10.32964/tj15.6.395.

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Cellulosic nanofibrils (CNF) were produced in a disk refiner, to various fines contents. This material was used as an additive to papermaking furnish at laboratory and pilot scales. Handsheets showed improved strength and surface properties with the addition of CNF. Properties also tended to improve with increasing fines content of CNF. Desired strength properties were achieved using CNF at different fines contents by adjusting the loading levels of CNF. On a pilot scale, CNF allowed an increased ash level while maintaining control properties. Strength and surface properties were generally enh
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Voigt, Claudia, Beate Fankhänel, Björn Dietrich, et al. "Influence of Ceramic Foam Filters with Al2O3 Nanocoating on the Aluminum Filtration Behavior Tested With and Without Grain Refiner." Metallurgical and Materials Transactions B 51, no. 5 (2020): 2371–80. http://dx.doi.org/10.1007/s11663-020-01900-1.

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Abstract In industrial applications, filter materials are often chosen according to cost as well as their processing and thermomechanical properties, but rarely in terms of their behavior during filtration, which is largely due to there being insufficient information available on the influence of filter materials and surface quality on filtration behavior. In this study, the manufacture of functionalized Al2O3 nanofilters was investigated, along with their filtration performance in short- and long-term filtration trials. In addition, sessile drop tests were performed to measure the contact ang
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Wistara, Nyoman J., Wulan Starini, Fauzi Febrianto, and Gustan Pari. "Binderless MDF from Hydroxymethylated Kenaf Pulp." Jurnal Ilmu Kehutanan 12, no. 1 (2018): 3. http://dx.doi.org/10.22146/jik.34031.

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Modified lignin with improved reactivity can be a potential alternative for synthetic phenol formaldehyde resin for the adhesive of wood composite. Direct hydroxymethylation of kenaf in the present experiments was intended to increase lignin reactivity, and therefore was expected to result in satisfying properties of binderless MDF. The stem of kenaf was refined in a disk refiner and the refined fibers were hydroxymethylated in various levels of alkalinity. The concentration of NaOH during hydroxymethylation was of 3%, 6% and 12%. Wet process was applied to produce MDF (30 cm x 30 cm x 1 cm) w
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CORREIA, THIAGO R., JESSICA PALOMA A. BARROS, CAIO C. SANTOS, et al. "CHARACTERIZATION OF SPONGE-GOURD RESIDUE PRETREATED BY MECHANICAL DISC REFINING." Cellulose Chemistry and Technology 55, no. 1-2 (2021): 149–57. http://dx.doi.org/10.35812/cellulosechemtechnol.2021.55.16.

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The present works describes the effect produced by mechanical disc refining in the pretreatment of lignocellulose agro-industrial waste, using scraps of sponge gourd. Two batches of sponge gourd scraps were refined in a laboratory disc refiner, at a consistence of 2.9 wt% (fiber/water) and residence time of 2 and 4 min. The two batches were then coded as MRS and HRS, respectively. MRS and HRS samples, as well as non-refined sponge gourd (NRS), were characterized in terms of morphological aspects, structural characteristics and thermal behavior. The analysis of SEM micrographs revealed that int
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Whalley, R., and D. Mitchell. "Disc refiner analysis." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 211, no. 3 (1997): 157–69. http://dx.doi.org/10.1243/0954408971529647.

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A general non-linear model of a disc refiner for the preparation of the raw material used in paper and board manufacture, from processed mechanical and chemical pulp, is derived. Thereafter, a linear description is constructed for analysis and process design purposes. The time domain responses of the models are presented for purposes of comparison and simulation is employed to confirm the predicted condition of torsional resonance. The effect of this excitation on the reciprocal shredding and shearing action of the machine is commented upon.
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Dudorov, A. E., and R. E. Pudritz. "An MHD Model of Be Stars with Disks." International Astronomical Union Colloquium 175 (2000): 611–16. http://dx.doi.org/10.1017/s0252921100056633.

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AbstractAn investigation of the formation and evolution of Be stars show that these stars could have dipolar fossil magnetic fields. This magnetic field should constrain the circumstellar magnetic disk and influence its dynamical features. For studying these effects we refine the alphamodel of accretion disks of Shakura and Sunyaev by incorporating into this model the evolution of large-scale magnetic fields. In the frame of our model we can investigate the rotational history of the star with the disk and the ionization and thermal properties of disks. We show in particular that in the magneto
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Maraj, E. N., and Shakil Shaiq. "Rotational impact on nanoscale particles Fe2O4, NiZnFe2O4, MnZnFe2O4 suspended in C2H6O2 confined between two stretchable disks: a computational study." Canadian Journal of Physics 98, no. 3 (2020): 312–25. http://dx.doi.org/10.1139/cjp-2019-0208.

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This communication addresses the fluid and heat transfer flanked by two stretchable rotating disks influenced by the induced magnetic field. The fluid flows due to the rotation of the stretchable disks enclosing a nanofluid having nanoparticles of three distinct ferrite compounds. The mathematical formulation of the problem is performed in a cylindrical coordinate system. Similarity analysis is applied for the sake of simplification. The velocity, pressure, induced magnetic field, and temperature distributions accompanied by surface drag force and heat flux are computed numerically by employin
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Dissertations / Theses on the topic "Disk refiner"

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Kohkar, Gohar. "Numerical simulation of the flow in a disc refiner." Thesis, KTH, Mekanik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-65518.

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The thesis work is carried out in Innventia AB and Royal Institute of Technology (KTH). The objective of the study was to numerically simulate the flow inside the disc refiner and to determine the factors influencing the development of flow in the rotor and the stator of the disc refiner. Simplified single groove model is used to analyze the flow in the rotor and stator of the refiner. Fluid is assumed to be Newtonian and single phase with dynamic viscosity 100 times higher than water. Model and mesh used for the rotor and stator are identical with different wall boundary conditions and fluid
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Rousselle-Manuel, Christine. "Modélisation du mécanisme de raffinage des pâtes à papier et étude de nouveaux paramètres géométriques liés aux plaques." Grenoble INPG, 1989. http://www.theses.fr/1989INPG0079.

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On a cherche a modeliser certains aspects du raffinage des pates afin d'expliquer et de limiter l'energie depensee. L'examen bibliographique souligne la complexite des phenomenes, mis en jeu. Une modelisation de l'effet des lames sur la pate consiste en l'application de contraintes pulsees d'etirement sur une fibre individuelle. On observe sa rigidification lors de l'essai. Les fibres kraft ont un comportement plus visqueux que les fibres au bisulfite, d'ou une plus grande depense energetique. Des observations microscopiques revelent une amelioration de l'etat de la fibre. L'etude des parametr
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Rueckert, Cheryl B. "Evaluation of preferential energy absorption in earlywood and latewood fibers of loblolly pine in cyclic compression." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/5805.

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Berg, Jan-Erik. "Wood and fibre mechanics related to the thermomechanical pulping process." Doctoral thesis, Mittuniversitetet, Institutionen för naturvetenskap, teknik och matematik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-6725.

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The main objective of this thesis was to improve the understanding of some aspects on wood and fibre mechanics related to conditions in the thermomechanical pulping process. Another objective was to measure the power distribution between the rotating plates in a refiner.   The thesis comprises the following parts: –A literature review aimed at describing fracture in wood and fibres as related to the thermomechanical pulping process –An experimental study of fracture in wood under compression, at conditions similar to those in feeding of chips into preheaters and chip refiners –An experimental
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Books on the topic "Disk refiner"

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Floridi, Luciano. The Logic of Information. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198833635.001.0001.

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This is a book on the logic of design and hence on how we make, transform, refine, and improve the objects of our knowledge. The starting point is that reality provides the data, to be understood as constraining affordances, and we transform them into information, like semantic engines. Such transformation or repurposing is not equivalent to portraying, or picturing, or photographing, or photocopying anything. It is more like cooking: the dish does not represent the ingredients, it uses them to make something else out of them, yet the reality of the dish and its properties hugely depend on the
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Book chapters on the topic "Disk refiner"

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Gorbacheva, Elena. "Promotion of Gender Equality at the University of Muenster’s Department of Information Systems." In Institutional Change for Gender Equality in Research Lesson Learned from the Field. Fondazione Università Ca’ Foscari, 2019. http://dx.doi.org/10.30687/978-88-6969-334-2/008.

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The article provides an overview of the work done at the University of Muenster (WWU), Department of Information Systems (DIS) within the Horizon 2020 EQUAL-IST project (“Gender Equality Plans for Information Sciences and Technology Research Institutions”). During the project, the existing at DIS challenges related to gender equality, diversity, and work-family balance were revealed, the objectives to address these challenges were set, and the interventions to achieve these objectives were designed, implemented, as well as continuously assessed and refined. This article provides insights into the course of project implementation at WWU, achieved outcomes, and sustainability plan.
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Dobrovie-Sorin, Carmen, and Ion Giurgea. "Conclusions." In Majority Quantification and Quantity Superlatives. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198791249.003.0006.

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This chapter summarizes our main empirical findings. We then make some suggestions regarding deep issues such as: Why is it the case that we have two majority MOSTs that can occur in both non-partitives and partitives (MOST<sub>dist</sub> and MOST<sub>cum</sub>) as well as two majority MOSTs that can occur only in partitives (MOST<sub>RP</sub> and MOST<sub>DP</sub>)? For each of these cases we demonstrate that the difference in LF representations stems from syntactic distinctions (NPs vs MeasPs as complements of MOST<sub>dist</sub> and MOST<sub>cum</sub>, respectively; RP and DP complements for partitive MOST). Comparisons with ALL further refine the proposals. We reiterate one of the main claims of the book: the fact that none of the majority MOSTs can be analyzed as a superlative. We propose that majority MOST evolved from the superlative of MOST via grammaticalization. We finally observe that the majority MOSTs that allow mass quantification invalidate some generalizations regarding “necessarily quantificational” DPs.
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Hutchinson, G. O. "Ovid, Metamorphoses." In Motion in Classical Literature. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198855620.003.0004.

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Striking depictions of motion in the Metamorphoses come readily to mind: Daphne, Actaeon, Daedalus and Icarus…. The motion shows copious diversity more than rigorous structuring, as in the Iliad. Wandering motion is frequent; a great range of spaces is covered. But the poem is interested in motion as a state of the universe, as Pythagoras’ philosophical speech brings out. The relation of metamorphosis to motion is manifold and complex; motion is connected to life and type of creature. Imagined possibilities of motion are important as well as narrated movement. The interest of the poem in motion is indicated by the frequency of moueo and motus there as compared to Aeneid and Fasti. Passages discussed include Niobe turning to not quite unmoving stone, supremely fast animals in impossible competition, the girl Iphis becoming a man and moving like one, Medea contemplating a voyage, Myrrha moving towards her father’s bedroom, Dis abducting Persephone. The depiction of motion is thus related to paradox, puzzles, refined observation, thought, morality, hierarchy. Motion is made conspicuous by drastic differences (as between the Greek army and snake and birds). The gods’ motion is both universal and individual (Venus briefly takes up Diana’s); more philosophically universal is the movement of time. The diversity of motion is held together by the flair of style.
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Conference papers on the topic "Disk refiner"

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Cartwright, D. J., J. G. Orbison, G. Kohler, and H. Shah. "Damage Tolerance Assessment of a Paper Pulp Refiner Disk." In ASME 1995 Design Engineering Technical Conferences collocated with the ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/detc1995-0155.

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Abstract As long as materials continue to have imperfections in their structure, failure by cracking will continue to be a consideration in design. Cracks may be the result of material in homogeneity, service loading and may also be introduced during the manufacturing of either, the material itself or the structure in which the material is used. In the presence of a crack, a structure is more prone to fail at stress levels lower than those based on standard yield criteria. Components such as rotating machinery store large amounts of energy during operation and a fracture resulting from cracks
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Moody, Jonathan P., Harry R. Millwater, and Michael P. Enright. "Automatic Risk Assessment Methodology for Gas Turbine Engines Employing Adaptive Recursive Triangulation." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-27576.

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A new automatic methodology for the risk assessment of gas turbine engine rotor disks subject to metallurgical defects is being investigated. This method has the promise of significantly reducing the amount of human time required to discretize the disk material into zones and to manually refine the zones to ensure convergence. The method is based on the concept of adaptive recursive triangulation which requires only limited initial defect locations from the analyst. Regions of refinement are selected based upon several criteria and various subdivision schemes are investigated. A numerical exam
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Atack, D., D. L. Clayton, A. E. Quinn, and M. I. Stationwala. "High Speed Photography Of Wood Pulping In A Disc Refiner." In 16th International Congress on High Speed Photography and Photonics, edited by Michel L. Andre and Manfred Hugenschmidt. SPIE, 1985. http://dx.doi.org/10.1117/12.967936.

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Poply, Parth, and J. Angel Arul Jothi. "Refined Image Segmentation for Calorie Estimation of Multiple-dish food items." In 2021 International Conference on Computing, Communication, and Intelligent Systems (ICCCIS). IEEE, 2021. http://dx.doi.org/10.1109/icccis51004.2021.9397169.

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Carneiro, Leonardo Motta, Luis F. G. Pires, Marcelo de Souza Cruz, and Luis F. A. Azevedo. "Dynamic Behavior of Spring-Loaded Pressure Relief Valve: Numerical and Experimental Analysis." In 2012 9th International Pipeline Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ipc2012-90239.

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The majority of oil and refined-product pipelines in Brazil have their protection system designs based on spring-type pressure relief valves. Thus, the proper design and operation of these valves is essential to ensure the safety of transport pipelines and loading/unloading terminals during any abnormal operation conditions that generate a surge pressure. In simple terms, these valves have a disk which is pressed by a spring against the inlet nozzle of the valve. When the pressure rises, the force generated on the surface of the disc increases and, depending on the pressure relief valve set po
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Wang, Ping, Jianwei Yang, and Jiahui Wang. "Computer simulation of refining process of a high consistency disc refiner based on CFD." In GREEN ENERGY AND SUSTAINABLE DEVELOPMENT I: Proceedings of the International Conference on Green Energy and Sustainable Development (GESD 2017). Author(s), 2017. http://dx.doi.org/10.1063/1.4992896.

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"The Efficient Biodiesel Production from Refined Palm Oil using Spinning Disc Reactor." In Aug. 12-14, 2019 Pattaya (Thailand). Universal Researchers, 2019. http://dx.doi.org/10.17758/uruae5.ul0819105.

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Carrera, Erasmo, Matteo Filippi, and Enrico Zappino. "Node-Dependent Kinematic One-Dimensional Models for the Analysis of Rotating Structures." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71347.

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In this paper, the dynamics of rotating structures has been studied using a refined one-dimensional finite element model with a node-dependent kinematics. The present approach has been used to derive models where refined theories are used only in the region in which they are required and classical models elsewhere. This produces a reduction in the computational cost without a reduction in the accuracy of the analysis. The equations of motion have been derived in a three-dimensional fashion and they include all contributions due to the rotational speed, namely the gyroscopic, the spin softening
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Krack, Malte, Lars Panning-von Scheidt, Jörg Wallaschek, Christian Siewert, and Andreas Hartung. "Reduced Order Modeling Based on Complex Nonlinear Modal Analysis and its Application to Bladed Disks With Shroud Contact." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-94560.

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The design of bladed disks with contact interfaces typically requires analyses of the resonant forced response and flutter-induced limit cycle oscillations. The steady-state vibration behavior can efficiently be calculated using the Multi-Harmonic Balance method. The dimension of the arising algebraic systems of equations is essentially proportional to the number of harmonics and the number of degrees of freedom (DOFs) retained in the model. Extensive parametric studies necessary e.g. for robust design optimization are often not possible in practice due to the resulting computational effort. I
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Zucca, Stefano, Christian M. Firrone, and Muzio Gola. "Coupled Static/Dynamic Modeling of Wedge Dampers for Turbine Blades." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-23466.

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Friction damping is one of the most exploited systems of passive control of vibration of mechanical systems. A common type of blade-to-blade friction dampers are the so-called underplatform dampers (UPDs); they are metal devices placed under the blade platforms and held in contact with them by the centrifugal force acting during rotation. The effectiveness of underplatform dampers to dissipate energy by friction and reduce vibration amplitude depend mostly on the damper geometry and material and on the static pre-loads pressing the damper against the blade platforms. The common procedure used
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Reports on the topic "Disk refiner"

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Darryl Dodson-Edgars. Refiner disc gap and wear measurement method. Final report for the period August, 1995 - January, 1999. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/763123.

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