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Academic literature on the topic 'Squeegee'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Squeegee"

1

Krammer, Oliver, László Jakab, Balazs Illes, David Bušek, and Ivana Beshajová Pelikánová. "Investigating the attack angle of squeegees with different geometries." Soldering & Surface Mount Technology 30, no. 2 (April 3, 2018): 112–17. http://dx.doi.org/10.1108/ssmt-09-2017-0023.

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Purpose The attack angle of stencil printing squeegees with different geometries was analysed using finite element modelling. Design/methodology/approach A finite element model (FEM) was developed to determine the attack angle during the stencil printing. The material properties of the squeegee were included in the model according to the parameters of steel AISI 4340, and the model was validated by experimental measurements. Two geometric parameters were investigated; two different unloaded angles (45° and 60°) and four overhang sizes of the squeegee (6, 15, 20 and 25 mm). Findings It was found that the deflection of the blade is nearly homogenous along the length of the squeegee. This implies that the attack angle does not change significantly along the squeegee length. The results showed significant differences between the initial and the attack angle. For example, the angle of the squeegee with 15 mm overhang size and with 60° initial angle decreased by more than 5° for a specific squeegee force of 0.3 N/mm; resulting in an attack angle of 53.4°. Originality/value The attack angle during the printing is considerably lower than the initial angle as a result of the printing force. The papers, which were dealing with the numerical modelling of the stencil printing presumed that the squeegees were having their initial angle. This could have led to invalid numerical results. Therefore, we decided to investigate the attack angle during stencil printing for squeegees with different initial geometries to enhance the numerical modelling of stencil printing.

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2

Denis, Véronique. "Pour comprendre la pratique du « squeegee » à Montréal1." Criminologie 36, no. 2 (April 5, 2004): 89–104. http://dx.doi.org/10.7202/007868ar.

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Résumé La pratique du « squeegee »2, relativement récente à Montréal et rendue illégale, a été l’objet d’une importante couverture médiatique mais n’a que très peu été étudiée. Même si les adeptes du « squeegee », communément appelés les « squeegees », sont souvent considérés comme des « jeunes de la rue », cet article met en évidence l’hétérogénéité de leurs expériences de vie ainsi que de leur rapport à cette pratique, rendant réductrice cette catégorisation. En outre, la méthodologie qualitative, incluant des observations sur le terrain et des entretiens non directifs auprès de jeunes qui pratiquaient le « squeegee » en 1999, permet d’esquisser le contexte social entourant la pratique du « squeegee » à Montréal. Enfin, à partir des sens que cette pratique revêt pour les jeunes qui l’exercent, l’article examine en quoi la pratique du « squeegee », socialement vue comme « hors normes », pourrait s’avérer pour eux un agent d’insertion sociale marginalisée.

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Whitmore, Mark, and Jeff Schake. "The Impact of Stencil Printing Upon Assembly & Reliability Of 0.3mm Pitch CSP Components." International Symposium on Microelectronics 2016, no. 1 (October 1, 2016): 000667–74. http://dx.doi.org/10.4071/isom-2016-thp55.

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Abstract With the continual shrinking of electronic assembly form factors, designers are being forced towards smaller, more complex components with decreasing interconnection pitches. As a consequence, the Surface Mount assembly process is becoming increasingly challenged. For the stencil printing process, this means that historically accepted stencil aperture area ratio design rules, (which dictate what can or cannot be printed), need to be significantly pushed to extend the printing process for next generation ultra -fine pitch components. As a result, a major study has been undertaken looking at several different aspects of the stencil printing process, and their impact upon the assembly and reliability of 0.3mm pitch CSP components. In a preliminary test, stencil printing factors such as stencil aperture size and printing technology (standard squeegees vs ultrasonically aided active squeegees) were investigated. Data showed that the active squeegees provided a significantly larger process window. Subsequently, components were assembled using a range of solder paste volumes printed with both standard and active squeegee technology. The components assembled using an active squeegee process exhibited higher assembly yield, and also extended reliability when subjected to thermal cycling.

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Wang, Zhan Zhong, Lin Zhang Cheng, Wei Zhang, and Wei Jie Wang. "Design and Simulation of the Drill Groove Squeegee Roller's Profile." Advanced Materials Research 421 (December 2011): 493–98. http://dx.doi.org/10.4028/www.scientific.net/amr.421.493.

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Based on the method of vector analysis, the mathematical model of squeegee roller for twist drill groove was setup. At the same time, the parameter design and simulation software for the profile curve of drill groove squeegee roller was developed with Visual C++ Language. The simulation results showed that the mathematical model of squeegee roller was right, and the design accuracy and efficiency of the twist drill squeegee roller was improved greatly.

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Jong-Kai Lin, Treliant Fang, and R. Bajaj. "Squeegee bump technology." IEEE Transactions on Components and Packaging Technologies 25, no. 1 (March 2002): 38–44. http://dx.doi.org/10.1109/6144.991173.

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MARTINEZ, BISMARCK A., ANDREIA BIANCHINI, JAYNE STRATTON, ORIANA RAABE, and STEVEN SWANSON. "Condensation Removal Practices and Their Potential for Contributing to Environmental Pathogen Contamination in Food Processing Facilities." Journal of Food Protection 84, no. 6 (January 19, 2021): 1047–54. http://dx.doi.org/10.4315/jfp-20-337.

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ABSTRACT Food manufacturers often use squeegees as a tool to remove condensation from overhead surfaces. This practice is done to reduce the likelihood of environmental pathogen contamination by eliminating condensed-water droplets that could fall from overhead surfaces during production. However, this practice may actually spread environmental pathogens across these surfaces, defeating its purpose and further increasing the risk for contamination in the processing area. To understand the risk associated with this common practice, test pipes inoculated with Listeria innocua ATCC 33090 were exposed to steam to produce condensation, which was then removed by squeegees. The pipe surfaces, droplets, and squeegees were subsequently analyzed for Listeria to determine the distance the organism spread across the pipe and how many organisms were transferred to the droplets and the squeegees. Results showed that Listeria traveled as far as 16 in. across the surface of the pipe, and bacterial transfer to the droplets decreased as the squeegee traveled further from the contaminated area. Sanitizers alone were able to remove about 1 to 2 log CFU of Listeria per in2 from the squeegee blades when materials were contaminated with Listeria (>6 log CFU/in2). Among the cleaning protocols evaluated, an extensive cleaning regimen was able to remove 3 to 4 log CFU/in2, which would be recommended to reduce the risk associated with environmental pathogen transfer. This study provides evidence that supports recommendations for minimizing the cross-contamination risk associated with condensation management practices. HIGHLIGHTS

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Ђорђевић, Драгољуб Б. "ЈОШ СОЦИОЛОШКИХ ЦРТИЦА О ШОФЕРШАЈБНОВЦИМА." ГОДИШЊАК ЗА СОЦИОЛОГИЈУ 25, no. 1 (November 13, 2020): 33–58. http://dx.doi.org/10.46630/gsoc.25.2020.02.

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This study is one of the results of investigating the habits of Tomislav Asanović, a Roma squeegee man working on the crossroad near the Mladost Bridge in Niš, whom we renamed Toma the Traffic Light Man. The empirical part of this study was conducted in 2018 by Jelena Dinić, Dragan Todorović, and Mladen Mitrović, while the author of this text has nearly every day observed and collected data on the working habits of this squeegee man, which can be seen as an ideal representative of his guild. We are extensively using the documented material to present the attitude towards the Roma squeegee man, the so-called urban miners, whereas the category of urban miners also includes: carriers, the homeless, waste collectors, people who collect leftovers on graveyards and from dustbins, collectors of old paper and boxes, shoeshiners, sellers of small artefacts (costers), beggars, old iron collectors, collectors of plastic bottles and all sorts of plastic, landfill scavengers, cart drivers, buskers. Even though they are barely touched upon in this sociological portrait, it is expected that our study into squeegee men will incite more scrupulous empirical research into Romani urban miners, other marginalized people and losers – let us not forget – those who provide life with more beautiful nuances, and establish the sociology of misery and pauperization or the sociology of marginalized groups, a special discipline currently emerging in Serbian sociology. Key words: Squeegee men, urban miners, Serbian Roma, Roma-related stereotypes

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Sayers, William. "Etymology of Squiligee and Squeegee." Mariner's Mirror 102, no. 4 (October 2016): 447–51. http://dx.doi.org/10.1080/00253359.2016.1240981.

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Ali, Muhammad, Long Lin, Saira Faisal, Iftikhar Ali Sahito, and Syed Imran Ali. "Optimisation of screen printing process for functional printing." Pigment & Resin Technology 48, no. 5 (September 2, 2019): 456–63. http://dx.doi.org/10.1108/prt-05-2019-0043.

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Purpose The purpose of this study is to explain the effects of screen printing parameters on the quantity of ink deposited and the print quality in the context of printing of functional inks. Both these aspects of printing are crucial in the case of conventional and functional printing. This is because, in the case of conventional printing, the quantity of ink deposit affects the color strength while in the case of functional printing, it directly affects the resulting functionality of the ink layer. Design/methodology/approach In this work, an automatic lab-scale screen printer was used to print functional inks on a paper board substrate. The printing parameters, i.e. printing pressure and squeegee angle were altered and the resulting effects on the quantity of ink that was deposited were recorded. The quantity of ink deposit was related to its surface resistivity. In addition, the quality of the print was also assessed by examining the design registration quality. Findings The authors found that altering the squeegee angle has a significant effect on the properties of the resulting ink deposit. More importantly, the authors found that the deflection in the rubber blade squeegee was greatly dependent on the initial angle of the squeegee at the start of the printing stroke. For each set value of the squeegee angle that was considered, the actual angle during printing was recorded and used in the analysis. A printing pressure of three bars and squeegee angle of 20° resulted in the maximum weight of ink deposit with a correspondingly lowest surface resistivity. Practical implications This study is envisaged to have considerable practical implications in the rapidly growing field of functional printing of flexible substrates including, but not limited to, textiles. This is because, the study provides an insight into the effects of printing parameters on the characteristics of a functional ink deposit. Originality/value Screen printing of flexible substrates is a well-developed and arguably the most widely used printing technique, particularly for textiles. Numerous studies report on the analysis of various aspects of screen printing. However, to the best of the knowledge, the effects of printing parameters on the characteristics of functional inks, such as electrically conductive inks, have not been studied in this manner.

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Jou, Yung-Tsan, Wen-Tsann Lin, Wei-Cheng Lee, and Tsu-Ming Yeh. "Integrating the TRIZ and Taguchi's Method in the Optimization of Processes Parameters for SMT." Advances in Materials Science and Engineering 2013 (2013): 1–10. http://dx.doi.org/10.1155/2013/830891.

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SMT is an assembly technology for core circuit board parts. Unless process parameters are effectively controlled, poor solderability may result in a decline in product quality. This study looks at an SMT manufacturing process in a multinational company. First, the TRIZ contradiction matrix is revised to investigate the association between the 39 parameters in the contradiction matrix and 13 parameters that influence the unevenness of solder paste in the solder paste printing process. Expert verification is then used to screen the key factors affecting the quality of SMT, which are then combined with Taguchi's method to identify the optimal parameter set influencing the thickness of SMT solder paste.Results. TRIZ identifies squeegee pressure, ejection speed, squeegee speed, and squeegee angle as the four parameters with the greatest influence on SMT solder paste thickness. Taguchi's method is used to identify the optimum levels set for the experimental factors and carry out confirmation experiments. TheS/Nratio improved from 21.732 db to 26.632 db, while the mean also improved from the current 0.163 mm to 0.155 mm, close to the target value of 0.15 mm. The results show that applying TRIZ and Taguchi's method for the purpose of product improvement is feasible.

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Dissertations / Theses on the topic "Squeegee"

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Dachner, Naomi. "An ethnographic study of homeless youth, the food experiences of squeegee kids." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0007/MQ46127.pdf.

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Hull, Angela Lynn. "Geochronology and thermochronology of Precambrian basement drill core samples in Nebraska and southeastern South Dakota." Kent State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=kent1385078311.

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Conradi, Michael C. "The social construction of squeegee kids as a law and order problem in neo-conservative Ontario, a content analysis of press coverage, 1995-1998." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ60674.pdf.

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Glowania, Micheal, Oliver Weichold, Markus Hojczyk, Gunnar Seide, and Thomas Gries. "Neue Beschichtungsverfahren für PVA-Zement-Composite in textilbewehrtem Beton." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1244043027880-94266.

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Im Rahmen des Transferprojektes T01 „Textilbeschichtung mit hochviskosen Massen“ des Sonderforschungsbereiches 532 (SFB 532) wird die Realisierung und Bewertung eines integrierten Beschichtungskonzeptes zur nachhaltigen Verbesserung der Tragfähigkeit von textilbewehrten Betonbauteilen an der RWTH Aachen University untersucht. Dazu wird eine neue Auftragstechnik für hochviskose Beschichtungsmassen entwickelt, die eine vollständige Penetration von Multifilamentgarnen mit großen Garntitern und einer hohen Anzahl an Filamenten in textilen Gelegen erzielt. Des Weiteren werden aktive Beschichtungsmassen auf der Basis von Polyvinylalkohol-Zement-Compositen, die eine homogene Anbindung aller Einzelfilamente an die Zementmatrix ermöglichen, erforscht.

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Ward, Martin B. "Squeezed light in semiconductors." Thesis, University of Oxford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270175.

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Scott, Martin. "Atom : squeezed light interactions." Thesis, Queen's University Belfast, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268311.

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Aggarwal, Nancy Ph D. Massachusetts Institute of Technology. "A room temperature optomechanical squeezer." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/123354.

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This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2019
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 294-306).
Decades of advancement in technologies pertaining to interferometric measurements have made it possible for us to make the first ever direct observation of gravitational waves (GWs). These GW emitted from violent events in the distant universe bring us crucial information about the nature of matter and gravity. In order for us to be able to detect GWs from even farther or weaker sources, we must further reduce the noise in our detectors. One of the noise sources that currently limits GW detectors comes from the fundamental nature of measurement itself. When a certain measurement reaches very high precision, the Heisenberg uncertainty principle comes into play. In GW detectors, this uncertainty manifests itself in the quantum nature of the light. Due to its quantum nature, light (or electromagnetic field) has an uncertain amplitude and phase.
Since the interferometric measurement is directly measuring the phase of light, this uncertainty poses a limit on the precision of GW measurements. Additionally, this measurement is also subject to quantum back-action, which arises due to the radiation pressure force fluctuations caused by the amplitude uncertainty (QRPN). In order to lower this quantum noise, GW detectors plan to use squeezed light injection. Squeezed light is a special quantum state of light which has lower uncertainty in a certain quadrature, at the expense of higher uncertainty in the orthogonal quadrature. In this thesis, I focus on using radiation-pressure-mediated optomechanical (OM) interaction to generate squeezed light. Creating squeezed states by using optomechanical interaction opens up possibilities for engineering truly wavelength-independent squeezed light sources that may also be more compact and robust than traditionally used non-linear crystals.
Additionally, this project inherently involves studying the OM interaction, which is the mechanism for back-action noise in GW detectors. Our basic setup is a Fabry-Perot cavity with a movable mirror. We start by understanding the physics of this system in the presence of realistic imperfections like losses and classical noise. This study furthers the previous work done on OM squeezing in an ideal Fabry-Perot cavity. We use this understanding of the system to optimize the experimental parameters to obtain the most possible squeezing in a broad audio-frequency band at room temperature. This optimization involves choosing the optical properties of the cavity, and the mechanical properties of the oscillator. We then present the experimental implementation of this design, and subsequent observation of QRPN as well as OM squeezing from the optimized design.
These observations are the first ever direct observation of a room temperature oscillator's motion being overwhelmed by vacuum fluctuations. More so, this is also the first time it has been shown in the low frequency band, which is relevant to GW detectors, but poses its own technical challenges, and hence has not been done before. Being in the back-action dominated regime along with optimized optical properties has also enabled us to observe OM squeezing in this system. That is the first direct observation of quantum noise suppression in a room temperature OM system. It is also the first direct evidence of quantum correlations in a audio frequency band, in a broadband at non-resonant frequencies.
by Nancy Aggarwal.
Ph. D.
Ph.D. Massachusetts Institute of Technology, Department of Physics

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Fuchs, Ingo. "Der aktienrechtliche Squeeze-out." Köln München Heymann, 2008. http://d-nb.info/993395112/04.

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Schucan, Gian-Mattia. "Generation of squeezed light in semiconductors." Thesis, University of Oxford, 1999. http://ora.ox.ac.uk/objects/uuid:417b1d31-8d25-42db-b707-32bd460b4183.

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We present experimental studies based on all three methods by which the generation of squeezed light in semiconductors has thus far been demonstrated experimentally: Fourwave mixing, multi-photon absorption and direct generation at the source. Four-wave mixing was used to generate femtosecond-pulsed quadrature squeezed light by cross-phase modulation in single-crystal hexagonal CdSe at wavelengths between 1.42 and 1.55 μm. We measured 0.4 dB squeezing (1.1 dB is inferred at the crystal) using 100 fs pulses. The wavelength and the intensity dependence, as well as variations in the local oscillator configuration were investigated. At higher intensities squeezing was shown to deteriorate owing to competing nonlinear processes. We also characterised the nonlinear optical properties of CdSe in this wavelengths range using an interferometric autocorrelator. In addition, we studied the feasibility of extending this technique to AlGaAs waveguides. The key problems are addressed and solutions are proposed. In a different experiment we used an AlGaAs waveguide to demonstrate for the first time photon-number squeezing by multi-photon absorption. By tuning the pump energy through the half bandgap energy we could effectively select two- or three-photon absorption as the dominant mechanism. Squeezing by these two mechanisms could be clearly distinguished and was found to be in good agreement with longstanding theoretical predictions. We also established the generality of the effect, by demonstrating the same mechanism in organic semiconductors, where it led to the first ever observation of squeezed light in an organic material. Finally, we present our measurements of photon-number squeezing in high-efficiency double heterojunction AlGaAs light-emitting diodes. We measured squeezing of up to 2.0 dB. In addition, we observed quantum noise correlations when several of these devices were connected in series.

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Zhou, Peng. "Interactions of atoms with squeezed light." Thesis, Queen's University Belfast, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337055.

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Books on the topic "Squeegee"

1

Squeegee: Roman. Montréal: vlb éditeur, 2003.

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Of luck and war: From squeegee kid to bomber pilot in World War II. Burnstown, Ont., Canada: General Store Publ. House, 1999.

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Simple squeezes: Kelsey on squeeze play. London: V. Gollancz in association with P. Crawley, 1985.

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Life in New York: How I learned to love squeegee men, token suckers, trash twisters, and subway sharks. Golden, CO: Fulcrum Publishing, 2015.

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Squeeze. Victoria, BC: Orca Book Publishers, 2010.

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Thomas, Roy. Squeeze. New York, NY: Topps Comics, 1997.

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Hammial, Philip. Squeeze. Sydney, Australia: Island Press, 1985.

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8

Steiber, Ellen. Squeeze. New York: HarperCollins, 1996.

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Kelsey, H. W. Simple squeezes. London: V. Gollancz in association withPeter Crawley, 1992.

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Kelsey, H. W. Simple squeezes. London: Gollancz in association with Peter Crawley, 1985.

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Book chapters on the topic "Squeegee"

1

Gooch, Jan W. "Squeegee." In Encyclopedic Dictionary of Polymers, 694. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_11100.

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Weik, Martin H. "squeegee roller." In Computer Science and Communications Dictionary, 1646. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_18023.

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Gooch, Jan W. "Squeegee Coat." In Encyclopedic Dictionary of Polymers, 694. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_11101.

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Ismail, I., S. H. Mannan, N. N. Ekere, and E. K. Lo. "Experimental Study of the Printing of Solder Paste Using the Metal Blade Squeegee System." In Proceedings of the Thirtieth International MATADOR Conference, 263–66. London: Macmillan Education UK, 1993. http://dx.doi.org/10.1007/978-1-349-13255-3_34.

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Woldeamanuel, Mintesnot G. "Squeezed." In Urban Issues in Rapidly Growing Cities, 138–52. Milton Park, Abingdon, Oxon ; New York, NY : Routledge, 2020.: Routledge, 2020. http://dx.doi.org/10.4324/9780429344831-9.

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Fisher, John. "‘People Who Squeeze and People Who May Be Squeezed’: Across Mongolia, 1908." In British Diplomacy and the Descent into Chaos, 61–79. London: Palgrave Macmillan UK, 2012. http://dx.doi.org/10.1057/9780230359819_4.

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Plenio, Martin Bodo. "Squeezed States." In Compendium of Quantum Physics, 736–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-70626-7_207.

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Zhao, Yong, and Brian Gearin. "Squeezed Out." In Creative Intelligence in the 21st Century, 121–38. Rotterdam: SensePublishers, 2016. http://dx.doi.org/10.1007/978-94-6300-506-7_8.

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Lvovsky, A. I. "Squeezed Light." In Photonics, 121–63. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119009719.ch5.

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Feagin, James M. "Squeezed States." In Quantum Methods with Mathematica®, 85–99. New York, NY: Springer New York, 1994. http://dx.doi.org/10.1007/978-1-4612-4328-1_8.

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Conference papers on the topic "Squeegee"

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Krammer, Oliver. "Investigating the effect of squeegee attack angle on the solder paste pressure during stencil printing." In 2015 38th International Spring Seminar on Electronics Technology (ISSE). IEEE, 2015. http://dx.doi.org/10.1109/isse.2015.7248019.

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Oliveira, Ricardo F., Nelson Rodrigues, José Carlos Teixeira, Duarte Santos, Delfim Soares, Maria F. Cerqueira, and Senhorinha F. C. F. Teixeira. "A Numerical Study of Solder Paste Rolling Process for PCB Printing." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-88035.

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The increasing demand for electronic devices associated with the increasing competitiveness between enterprises, pushes towards process automation to decrease production costs. The reflow soldering has proven to be effective in this regard. This is composed by a series of steps or processes, such as: (a) stencil printing, (b) component placement and (c) reflow oven soldering. Each process has its specific traits that contribute to the overall process efficiency. The present study is directed towards process (a), which includes the rolling of the solder paste over the stencil surface, followed by the subsequent filling of the stencil apertures. Several parameters influence the solder paste behaviour and thus the effectiveness of the rolling process. This work focuses on the solder paste non-Newtonian viscosity properties, with the solder paste presenting a thixotropic behaviour, necessary for the filling of the stencil apertures. Although the increase in the squeegee velocity causes extra shear in the solder paste and consequently lower viscosity, the excess of velocity may cause defects in the aperture filling process. In addition, during the rolling process, air may become entrapped in the solder paste. The complexity of this process is addressed by numerical simulation, in particular, using the work-package ANSYS to study the solder paste progress, during the rolling process, as well as the parameters influencing it. The fluid flow simulation is solved using the solver FLUENT®, a simplified 2D domain with real case dimensions, a transient prediction of the viscosity, which is a function of the solder paste solicitation, and finally by using the Volume of Fluid (VOF) method to track the solder-air interface boundary. Dynamic meshing methods are also employed to replicate the movement of the squeegee wall, in its task to push the solder paste tumble over the stencil. This study enlightens the role played by the printing velocity in the stencil aperture filling, a logarithm correlation can be found between them. It was found that lower print velocities provide better results than higher speeds. It was observed that the back tip of the squeegee blade causes a partial removal of the solder paste from the aperture, which is higher for faster print processes. An analysis of the filling process over time concluded that, independently of the printing velocity, 90% of the filling occurs in the first quarter of the process.

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Fu, Weixin, Jun Mizuno, Shuichi Shoji, Takashi Kasahara, Akiko Okada, and Shugo Ishizuka. "Novel bonding method using Cu bumps coated with flexible Ag nanoparticle layer formed by squeegee-coating." In 2013 IEEE CPMT Symposium Japan (Formerly VLSI Packaging Workshop of Japan). IEEE, 2013. http://dx.doi.org/10.1109/icsj.2013.6756116.

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van der Pluijm, Ben, Austin Boles, and Erin Lynch. "CHALLENGING THE OROGENIC FLUID EXPULSION (“SQUEEGEE”) HYPOTHESIS; EVIDENCE FROM CLAYS IN THE CENTRAL APPALACHIANS OROGEN AND FORELAND." In GSA Annual Meeting in Phoenix, Arizona, USA - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019am-335219.

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Kagerer, Markus, Matthias Huedig, Tim C. Lueth, and Franz Irlinger. "Manual microassembly system with integrated squeegee device for homogenous and defined adhesive layers for bimorph piezoelectric actuators using in drop-on-demand techniques." In 2013 IEEE International Conference on Robotics and Biomimetics (ROBIO). IEEE, 2013. http://dx.doi.org/10.1109/robio.2013.6739748.

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Ghorbani, N., M. C. Wilson, N. Kapur, N. Fleming, and A. Neville. "Carbon Nanotubes: A New Methodology for Enhanced Squeeze Lifetime CNTs." In SPE International Oilfield Scale Conference and Exhibition. SPE, 2014. http://dx.doi.org/10.2118/spe-169763-ms.

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Abstract A new potential application of nanotechnology for mineral scale prevention in the oil and gas industry is presented. In current squeeze treatments, in which scale inhibitors are squeezed into wells to adsorb or precipitate onto rock surfaces for later release, a large proportion of the injected inhibitor does not adsorb and is therefore returned very quickly from the reservoir upon well re-start. Here it is demonstrated that nano-particles have the potential to enhance squeeze lifetime by greatly increasing the adsorption of inhibitors within the formation. An extensive literature review is presented, exploring the potential for using nano-scale materials in squeeze treatments. One of the observations from scale inhibitor squeezes into sandstone reservoirs is the apparent lack of suitable surfaces available for adsorption. The main constituent of sandstones, quartz, has a very low ability to adsorb inhibitor (1 mg/l). Given this, research using nanotechnology was targeted towards enhancing the available sites for scale inhibitor adsorption within the near wellbore. Specifically, research was undertaken to examine the potential benefits of using carbon nanotubes in a process called Nanotechnology Assisted Squeeze Treatment (NAST). The process involves carbon nanotubes adsorbing and permanently modifying the near wellbore with scale inhibitors subsequently adsorbing onto the nanotubes. This process was observed to be significantly higher than a non-modified near wellbore surface, with a maximum adsorption of more than 85 and 160mg/g onto the nanotubes in solution of distilled water (DW) and CaCl2 in DW; respectively, compared to 1 mg/g directly onto the rock. Coreflood tests comparing the NAST procedure with a simplified standard coreflood show the potential for improvement of the squeeze lifetime.

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Aguirre, M. E., G. Hayes, C. Yuangyai, M. Frecker, J. Adair, and N. Antolino. "Fabrication and Strength-Based Design of a Meso Forceps." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-87557.

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A novel fabrication process and design optimization method for a mesoscale forceps is presented. This work is part of a larger research effort to design and fabricate nanoparticulate enabled surgical instruments using an iterative fabrication-design technique. The current paper focuses on the fabrication of thick (∼hundreds of microns) two dimensional parts with large aspect ratios (length/width > 20). The paper also describes an optimization method that accounts for manufacturing requirements and material strength. The process begins with the fabrication of an array of molds on refractory substrates using a modified UV lithography technique. In parallel, engineered ceramic nanocolloidal slurries are prepared for gel-casting into the molds. Mold infiltration takes place via a squeegee technique adapted from screen printing with excess slurry removed using an ethanol bath. Finally, the photoresist molds are removed via pyrolysis, and ceramic parts sintered to full density. Employing this manufacturing technique for the compliant micro forceps design is advantageous because a large number of parts can be produced with large aspect ratios, sharp edges (∼ 1 μm), and a resolution of 2 μm. An optimization algorithm, using ANSYS optimization module, is formulated to determine the effect of dimensional parameters and material strength on the optimal design and predicted performance of the compliant meso forceps. Three ultimate strength values are separately implemented as a stress constraint in our optimization problem. Results conclude that our manufacturing process is capable of producing meso scale forceps considering the anticipated ultimate strength at this scale.

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Aguirre, M. E., G. Hayes, M. Frecker, J. Adair, and N. Antolino. "Fabrication and Design of a Nanoparticulate Enabled Micro Forceps." In ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/detc2008-49917.

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A novel fabrication process and design optimization method for a micro forceps is presented. This work is part of a larger research effort to design and fabricate nanoparticulate enabled surgical instruments. The micro forceps is a monolithic compliant mechanism that due to its two-dimensional design can be manufactured using the new fabrication process. The process begins with fabrication of an array of molds on refractory substrates using a modified UV lithography technique. In parallel, engineered ceramic nanocolloidal slurries are prepared for gel-casting into the molds. Mold infiltration takes place via a squeegee technique adapted from screen printing with excess slurry removed using an ethanol wipe. Finally, the photoresist molds are removed with a reactive ion etch (RIE) step, and ceramic parts sintered to full density. Employing this manufacturing technique for the compliant micro forceps design is advantageous because a large number of parts can be produced with a large aspect ratio (≥40:1), sharp edges (∼ 1 μm), and a resolution of 2 μm. Two optimization problems are formulated to determine the effect of dimensional parameters and material strength on the performance of the compliant micro forceps. First, performance is sensitive to small changes in the geometry, indicating that dimensions and shrinkage rates must be carefully controlled during processing. Second, performance can also be improved by using very large aspect ratios and/or improvements in material strength. A sample part manufactured using the new process is presented.

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Ryan, Claire, Jeff M. Punch, Bryan Rodgers, Greg Heaslip, Shane O’Neill, and Eamonn Murphy. "An Investigation of the Lead-Free Surface Mount Soldering Process: Solder Joint Evaluation and Process Optimisation." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-60491.

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A European Union ban on lead in most electrical and electronic equipment will be imposed as of July 1st 2006. The ban, along with market pressures, means that manufacturers must transfer from a tin-lead soldering process to a lead-free process. In this paper the implications on the surface mount (SMT) soldering process are presented. A set of experiments was conducted to investigate the screen-printing and reflow steps of the SMT process using a tin-silver-copper (95.5Sn3.8Ag0.7Cu) solder and a baseline of standard tin-lead (63Sn37Pb). 10×10 arrays of micro Ball Grid Array (micro-BGA) components mounted on 8-layer FR4 printed wiring boards (PWBs) were used. The screen-printing experiment addressed the deposition of the solder paste on the board. The parameters used in the investigation were print speed, squeegee pressure, snap-off distance, separation speed and cleaning interval, with the responses being measurements of paste height and volume. Optimum screen-printer settings were determined which give adequate paste volume and height and a good print definition. The reflow experiment investigated the following parameters of the temperature profile: preheat, soak, peak and cool down temperatures, and conveyor speed. The resulting solder joints were evaluated using cross-section analysis and x-ray techniques in order to determine the presence of defects. A mechanical fatigue test was also carried out in order to compare the strength of the solder joints. The overall quality of the lead-free solder joints was determined from these tests and compared to that of tin-lead. The outcome is a set of manufacturing guidelines for transferring to lead-free solder including optimum screen-printer and reflow oven settings for use with an SnAgCu solder.

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Bai, Xian-Xu, Peng Chen, Li-Jun Qian, and Ping Kan. "Design and Analysis of a Magnetorheological Fluid Mount Featuring Uni-Directional Squeeze Mode." In ASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/smasis2015-8813.

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A magnetorheological fluid (MRF) mount featuring unidirectional squeeze mode for vehicle engine mounting system is proposed and designed to attenuate the engine vibration with characteristics of broadband and small amplitude. The MRF mount is comprised of upper and lower bases for installation, a main rubber for static load, a bobbin for electromagnetic coil winding and a squeeze plate. The bottom surface of the bobbin and the top surface of the squeeze plate form the polar plates, between which the MRF is squeezed during the rebound of the MRF mount. Combining dynamic stiffness property of passive hydraulic mounts without fluid and adjustable damping force of MRF at squeeze mode, the MRF mount could provide a unique variable dynamic stiffness and damping properties, by adjusting the exciting current. To evaluate the performance of the MRF mount, a mathematical model considering the behavior of MRF at squeeze mode is derived to theoretically analyze and numerically simulate the dynamic stiffness and equivalent damping properties of the MRF mount. Further, the MRF mount based quarter vehicle mounting system model considering suspension system is constructed to analyze the force transmissibility of engine mounting system in frequency domain and simulate the relative displacement response in time domain.

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Reports on the topic "Squeegee"

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Haus, Hermann A., Karen Bergman, and Luc Boivin. Interferometric Measurement with Squeezed Light. Fort Belvoir, VA: Defense Technical Information Center, March 1995. http://dx.doi.org/10.21236/ada292402.

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Haus, Hermann, and E. P. Ippen. Interferometric Measurement with Squeezed Light. Fort Belvoir, VA: Defense Technical Information Center, February 1996. http://dx.doi.org/10.21236/ada304820.

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Haus, H. A. Interferometric Measurement With Squeezed Light. Fort Belvoir, VA: Defense Technical Information Center, February 1994. http://dx.doi.org/10.21236/ada276234.

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Haus, Hermann A. Interferometric Measurement with Squeezed Light. Fort Belvoir, VA: Defense Technical Information Center, January 1993. http://dx.doi.org/10.21236/ada260910.

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Chote, Robert, Carl Emmerson, and Gemma Tetlow. Budget 2009: tightening the squeeze? Institute for Fiscal Studies, April 2009. http://dx.doi.org/10.1920/bn.ifs.2009.0083.

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Longacre, R. S. How to Measure Squeeze Out. Office of Scientific and Technical Information (OSTI), September 2016. http://dx.doi.org/10.2172/1340394.

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Chote, Robert, Rowena Crawford, Carl Emmerson, and Gemma Tetlow. Britain's fiscal squeeze: the choices ahead. Institute for Fiscal Studies, September 2009. http://dx.doi.org/10.1920/bn.ifs.2009.0087.

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Longacre, R. Tubes, Mono Jets, Squeeze Out and CME. Office of Scientific and Technical Information (OSTI), October 2017. http://dx.doi.org/10.2172/1413933.

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Mane, S. R. Beam-beam tuneshift during the TEVATRON squeeze. Office of Scientific and Technical Information (OSTI), November 1988. http://dx.doi.org/10.2172/6545245.

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David Schwam, John F. Wallace, Qingming Chang, and Yulong Zhu. Optimization of Squeeze Casting for Aluminum Alloy Parts. Office of Scientific and Technical Information (OSTI), July 2002. http://dx.doi.org/10.2172/801193.

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