Relevant bibliographies by topics / Paper Printing properties Testing

Academic literature on the topic 'Paper Printing properties Testing'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Paper Printing properties Testing"

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PARENT, FRÉDÉRIC, JEAN HAMEL, and DAVID MCDONALD. "Web lateral instability caused by nonuniform paper properties." January 2022 21, no. 1 (February 1, 2022): 9–20. http://dx.doi.org/10.32964/tj21.9.22.

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Lateral or cross-machine direction (CD) web movement in printing or converting can cause problems such as misregistration, wrinkles, breaks, and folder issues. The role of paper properties in this problem was studied by measuring lateral web positions on commercial printing presses and on a pilot-scale roll testing facility (RTF). The findings clearly showed that CD profiles of machine direction (MD) tension were a key factor in web stability. Uneven tension profiles cause the web to move towards the low-tension side. Although extremely nonuniform tension profiles are visible as bagginess, more often, tension profiles must be detected by precision devices such as the RTF. Once detected, the profiles may be analyzed to determine the cause of web offset and weaving problems. Causes of tension profiles can originate from nonuniform paper properties. For example, by means of case studies, we show that an uneven moisture profile entering the dryer section can lead to a nonuniform tension profile and lateral web movement. Time-varying changes in basis weight or stiffness may also lead to oscillations in the web’s lateral position. These problems were corrected by identifying the root cause and making appropriate changes. In addition, we developed a mathematical model of lateral stability that explains the underlying mechanisms and can be used to understand and correct causes of lateral web instability
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PELIN, Cristina-Elisabeta, Gilbert Mihaita STOICAN, Adriana STEFAN, Mihai Victor PRICOP, Sorina ILINA, and George PELIN. "Mechanical properties of 3D printed metals." INCAS BULLETIN 13, no. 1 (March 5, 2021): 123–29. http://dx.doi.org/10.13111/2066-8201.2021.13.1.13.

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The new challenges in the aerospace field lead to the need to develop new materials with complex shapes, without major intervention in their definition. Thus, laser 3D printing technologies have been developed for both composite and metallic materials. This paper presents a study of characterization and testing of a 3D printed metal material (Maraging steel 1.2709) in three different directions (x, y and z) to observe, from a mechanical point of view, the behavior depending on the printing direction and the structural changes that intervene following the tensile stress. Mechanical tests consisted of tensile testing in accordance with current international standards, and morphostructural analyzes consisted of investigation of the failure area using optical microscopy and scanning electron microscopy (SEM), respectively.
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Yang, Pan Pan, Yan Fang Xu, Na Gao, and Ya Yuan Zhang. "Method for Testing and Analyzing the Printing Performance of Fluorescent Inks." Applied Mechanics and Materials 556-562 (May 2014): 2779–82. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.2779.

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In recent years, fluorescent ink, with a unique color performance and the advantages of green non-toxic, fast drying, thin ink, etc., is widely used in packaging printing, security printing, and other fields. What’s more, the luminescent properties and the interaction with paper of fluorescent ink are pained more and more attention. In this experiment, an ultraviolet light source is used to motivate the samples to emit, the fiber spectrophotometer is used to receive the reflected light of the samples in the vertical direction of the samples. The tone rendering curve and dot gain curve are obtained according to the radiation energy data of the sample, the printing indicators of fluorescent ink are obtained by analyzing the reproducing image tone scale and dot expansion characteristics of ink on the paper.
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Murčinková, Zuzana. "Macroscopic dynamic response of mechanical systems involving composites and effect of inner structure on damping properties." Mechanik 92, no. 4 (April 8, 2019): 288–91. http://dx.doi.org/10.17814/mechanik.2019.4.38.

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The paper deals with relation between inner structure of the machine and the composite material used in it and macroscopic dynamic response. It presents the experimental results of testing the relation between inner composite material structure and damping properties presented by logarithmic decrement quantity. Moreover, the paper provides the case study of application the composite material layered structure to the flexographic printing machine and results of that applications presented by printing speed.
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Baciu, Florin, Daniel Vlăsceanu, and Anton Hadăr. "The Influence of 3D Printing Parameters on Elastic and Mechanical Characteristics of Polylactide." Materials Science Forum 957 (June 2019): 483–92. http://dx.doi.org/10.4028/www.scientific.net/msf.957.483.

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The purpose of this paper is to evaluate the influence of 3D printing parameters (i.e. print speed, infill density, infill patterns) on the elastic and mechanical properties (i.e. Young modulus, yield limit, ultimate tensile strength). These properties have been determined experimentally on different specimens subjected to tensile loading using a universal testing machine INSTRON 8872. For these experimental investigations, the test specimens were manufactured in accordance to ASTM standards, modifying the following printing parameters: print speed, infill density, infill patterns. The influence of printing parameters on elastic and mechanical properties is necessary for a better understanding of the material behavior necessary in modelling and design of some type of structures manufactured using 3D printing method.
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Zhao, Victoria Xin Ting, Ten It Wong, and Xiaodong Zhou. "3D Printing of Biosamples: A Concise Review." Journal of Molecular and Engineering Materials 05, no. 02 (June 2017): 1740002. http://dx.doi.org/10.1142/s2251237317400020.

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This paper reviews the recent development of 3D printing of biosamples, in terms of the 3D structure design, suitable printing technology, and available materials. Successfully printed 3D biosamples should possess the properties of high cell viability, vascularization and good biocompatibility. These goals are attained by printing the materials of hydrogels, polymers and cells, with a carefully selected 3D printer from the categories of inkjet printing, extrusion printing and laser printing, based on the uniqueness, advantages and disadvantages of these technologies. For recent developments, we introduce the 3D applications of creating scaffolds, printing cells for self-assembly and testing platforms. We foresee more bio-applications of 3D printing will be developed, with the advancements on materials and 3D printing machines.
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Li, Zhanzhao, Maryam Hojati, Zhengyu Wu, Jonathon Piasente, Negar Ashrafi, José P. Duarte, Shadi Nazarian, Sven G. Bilén, Ali M. Memari, and Aleksandra Radlińska. "Fresh and Hardened Properties of Extrusion-Based 3D-Printed Cementitious Materials: A Review." Sustainability 12, no. 14 (July 13, 2020): 5628. http://dx.doi.org/10.3390/su12145628.

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3D-printing of cementitious materials is an innovative construction approach with which building elements can be constructed without the use of formwork. Despite potential benefits in the construction industry, it introduces various engineering challenges from the material point of view. This paper reviews the properties of extrusion-based 3D-printed cementitious materials in both fresh and hardened states. Four main properties of fresh-state printing materials are addressed: flowability, extrudability, buildability, and open time, along with hardened properties, including density, compressive strength, flexural strength, tensile bond strength, shrinkage, and cracking. Experimental testing and effective factors of each property are covered, and a mix design procedure is proposed. The main objective of this paper is to provide an overview of the recent development in 3D-printing of cementitious materials and to identify the research gaps that need further investigation.
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Tyurin, E. T., A. A. Zuikov, A. I. Bondarev, L. P. Gulyanz, L. A. Fadeeva, S. A. Konstantinova, A. A. Novikov, B. M. Anikuchin, and V. A. Vinokurov. "Testing of experimental samples of nanofibrillar cellulose in the production of lightweight coated paper." FORESTRY BULLETIN 25, no. 2 (April 2021): 90–98. http://dx.doi.org/10.18698/2542-1468-2021-2-90-98.

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The influence of nanofibrillar cellulose samples on the coating compositions water retention is considered. It was shown that gels of nanofibrillar cellulose and coating compositions based on them are distinguished by a high water-retention capacity during centrifugation (50.8% and 31.0% versus 17.7% with NaCMC). A preliminary assessment of the printing and technical properties of light weight coated paper (LWC) using nanofibrillar cellulose in the coating composition has been carried out. The technical characteristics of nanofibrillar cellulose have been determined, formulations of lightweight paper coatings have been developed for high-speed modern equipment.
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Yoo, Woo Sik, Jung Gon Kim, and Eun-Ju Ahn. "An Experimental Reproduction Study on Characteristics of Woodblock Printing on Traditional Korean Paper (Hanji)." Journal of Conservation Science 37, no. 5 (October 31, 2021): 590–605. http://dx.doi.org/10.12654/jcs.2021.37.5.16.

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The history of printing technology in Korea is studied by investigating existing ancient documents and records and comparing accumulated data and knowledge. Cultural property research requires non-destructive testing and observation with the naked eye or aided by a microscope. Researchers’ experience and knowledge are required even though they cannot guarantee the outcome. For ancient documents and records that are presumed to consist of woodblock printing, wood type printing, metal type printing, or their combinations, each researcher draws various opinions and conclusions. This often causes confusion and divides the opinions of ordinary citizens and field specialists. Among them, the criteria for judging ancient documents or books printed using woodblock and metal movable material are ambiguous. Academic research on the development history of printing technology in ancient Korea has been stagnant, and conflicts among researchers have also erupted. Involvement of national investigative agencies not specialized in cultural properties has exacerbated the situation. In this study, we investigated printing characteristics that are likely to serve as more objective judgment criteria by quantitatively analyzing the experiments of retrieving several sheets of Korean paper (Hanji) using a replicated Hunminjeongeum (訓民正音) woodblock and quantitatively analyzing the images of the printed papers. In addition, the validity and questions for the typical phenomena presented as a method for distinguishing between woodblock and metal print are reviewed. We investigated the possibility of developing new objective judgement criteria through quantitative analysis using image analysis and investigating the printing characteristics of Korean paper through a reproduction experiment of woodblock printing.
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Si, Zhan Jun, and Yu Li. "Study on the Color Rendering Effect of High Glossy Color Inkjet Paper." Applied Mechanics and Materials 469 (November 2013): 286–91. http://dx.doi.org/10.4028/www.scientific.net/amm.469.286.

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The material for ink-jet printing is very extensive, but now paper media is the most commonly used one, because the image of glossy ink jet paper printed clear and bright, shiny, light fastness and excellent color fastness in the aspects of indoor display packaging. Therefore, this paper combined the traditional test method and modern computer image analysis technology together, to formation the evaluation system of color rendering performance on a suitable color ink jet paper, in order to qualitative and quantitative evaluate to paper printing color rendering.This paper mainly used six kinds of different brands glossy inkjet paper as the pattern and carries on the experiment measurement and objective visual subjective evaluation. Subjective evaluation aspect, choose a certain number standard observer to do subjective quality evaluation. Objective evaluation aspect, using the experiment testing paper properties, through test the paper print image macro and micro color reference which on the different brand color ink-jet printing paper, and add the analyze the effects of combined with the basic properties of different paper color rendering of ink-jet paper, to ensure comprehensive and objective reflect the effect of color rendering.Through the above methods, qualitatively and quantitatively evaluate of the different paper pattern of the color rendering performance, it would be provide reference and evaluation method for glossy inkjet paper in the research of color rendering effect.
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Dissertations / Theses on the topic "Paper Printing properties Testing"

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Holland, Cort. "Building and testing a gravure paper conformity tester /." Online version of thesis, 1988. http://hdl.handle.net/1850/11536.

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Norberg, Ole. "The importance of paper properties in digital colour printing /." Norrköping : Department of Science and Technology, Linköping University, 2006. http://www.bibl.liu.se/liupubl/disp/disp2006/tek1050s.pdf.

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Jonen, Benjamin Philipp. "An Empirical Analysis of Paper Selection by Digital Printers." Thesis, Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/16180.

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The Printing Industry is undergoing a Digital Revolution . The importance of digital printing has been increasing substantially over the last decade. How has this development affected the paper selection of printing firms? Only paper suppliers who successfully anticipate the changing needs of the printing firms will be able to benefit from the industry trend. This paper employs a probability model to analyze a survey data set of 103 digital printing firms in the USA and Canada. The research idea is to link the firm s paper selection with the firm s characteristics in order to gain insights into the printing firm s paper purchase behavior and the overall industry structure. The first part of this work investigates the importance of certain paper aspects, such as price, runnability and print quality. Strikingly, a company s involvement in digital printing, measured by the percent of digital printers of the total number of printers in the firm, is a central determinant of the importance of all paper aspects analyzed. This finding underscores the tremendous importance of the printing firms transition to digital printing for the Paper Industry. Paper runnability is found to become more important the faster the firm grows and can be explained by the fact that more successful firms incur higher opportunity costs from downtime. Another key finding is that the importance of paper price is lower for firms who collaborate with their customer on the paper selection and are able to pass on cost increases in the paper price. The second part involves a more direct assessment of paper selection. Here, the firm s characteristics are utilized to explain the choice of coated versus uncoated paper for the printing job. The analysis shows that firms involved in sophisticated print services, such as Digital Asset Management or Variable Data Printing are more likely to use the high quality coated paper. Further it is found that the usage of coated paper increases with catalog printing whereas it decreases with book and manual printing.
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Hansuebsai, A. "An investigation of the optical profile properties (smoothness) of paper substrates including the effects on smoothness of solvent penetratation and with particular reference to lithographic." Thesis, University of the Arts London, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234271.

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Johnson, Mont A. "Investigation of the mechanical properties of copy paper using laser generated and detected lamb waves." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/16730.

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Griggs, David Allen. "A laser-based ultrasonic system to measure the mechanical properties of paper products in a controlled environment." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/16801.

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Skedung, Lisa. "Tactile perception : role of physical properties." Licentiate thesis, Stockholm : Skolan för kemivetenskap, Kungliga Tekniska högskolan, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11891.

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Yasumura, Patrícia Kaji. "Caracterização de propriedades de papel para impressão por jato de tinta." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-06062013-170116/.

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Os novos processos de impressão têm exigido novas características do papel. Entre os novos processos encontram-se as impressões digitais, em especial, a impressão por jato de tinta. Este tipo de impressão é baseado na ejeção de uma gota de tinta por um orifício em uma cabeça de impressão, que atinge o substrato formando um pixel. A definição das imagens formadas neste tipo de impressão é, portanto, dependente das características da tinta e, principalmente, do substrato. O presente trabalho tem por objetivo caracterizar as propriedades do papel que são importantes para a impressão por jato de tinta, desde o momento em que a tinta atinge a superfície do papel até a sua absorção. As propriedades consideradas neste estudo foram: a rugosidade, a porosidade e as propriedades químicas da superfície. A rugosidade foi avaliada pelos métodos tradicionais da área de papel e celulose (baseados em vazão de ar), por método perfilométrico e, qualitativamente, por imagens obtidas por microscopia eletrônica de varredura (MEV). Para a porosidade foi utilizado um método tradicional, além de porosimetria de intrusão de mercúrio e microtomografia de raios X, e a composição química da superfície foi avaliada por espectroscopia por energia dispersiva (EDS) e espectroscopia Raman. A partir dos resultados obtidos, as propriedades do papel foram qualificadas e as suas influências no espalhamento e absorção de líquidos em geral foram identificadas. Além da caracterização das propriedades superficiais e porosimétricas do papel, as correlações entre as propriedades e os diferentes métodos utilizados na sua determinação foram discutidas. Os métodos de análise tradicional não conseguem caracterizar os papéis em níveis de resolução capazes de fornecer informações sobre a influência das propriedades estudadas na impressão por jato de tinta. Ao mesmo tempo, a caracterização do papel para este tipo de impressão e a compreensão das influências das propriedades do papel no espalhamento e absorção de tinta e líquidos em geral só é possível quando as propriedades são analisadas em conjunto.
The new printing processes have required new features of the paper. Among the new printing processes are the digital printing, in particular, the inkjet printing. This type of printing is based on the ejection of an ink drop through a hole in a print head, which reaches the substrate forming a pixel. The resolution of the images formed in this type of printing is therefore dependent on the characteristics of the ink, and especially of the substrate. The present work aims to characterize the properties of paper that are important to the inkjet printing, from the moment the ink hits the paper surface to its absorption. The properties considered in this study were: roughness, porosity and chemical properties of the surface. The roughness was evaluated by traditional methods in pulp and paper sector (based on air flow), by profilometry and qualitative using images obtained by scanning electron microscopy (SEM). For the porosity, a traditional method was used, and also mercury intrusion porosimetry and X-ray microtomography. The chemical composition of the surface was evaluated by energy dispersive spectroscopy (EDS) and Raman spectroscopy. From the results obtained, the paper properties were described and their influence on the spreading and absorption of liquids in general have been identified. Besides the characterization of the paper surface properties and porosity, the correlations between the properties and the different methods used for measurement were discussed. The traditional analysis methods can not characterize the paper in levels of resolution capable of providing information about the influence of the properties studied in inkjet printing. At the same time, to characterize paper for this printing process and to understand the influences of the paper properties on the spreading and absorption of inks and liquids in general the paper properties have to be analyzed together.
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Vorakunpinij, Adisak. "The effect of paper structure on the deviation between tensile and compressive responses." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/7058.

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Forde, Kohler Lois J. "The effects of ophiostoma piliferm on wood pulp : investigation." Thesis, Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/5982.

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Books on the topic "Paper Printing properties Testing"

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A, Wilson Lawrence. Paper buying primer. Pittsburgh: GATFPress, 2001.

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Williams, Roger Lloyd. Paper & ink relationships. Manhattan, Kan: R.L. Williams, 1985.

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What the printer should know about paper. 3rd ed. Pittsburgh: GATFPress, 1998.

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Printing paper and ink. Albany: Delmar Publishers, 1997.

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What the printer should know about paper. 2nd ed. Pittsburgh, Pa., U.S.A: Graphic Arts Technical Foundation, 1989.

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What the printer should know about paper. 2nd ed. Pittsburgh, Pa: Graphic Arts Technical Foundation, 1995.

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Liao, Minhua. Zhao xiang wa yin yin mo yu bei yin cai liao yan jiu. Taibei Shi: Wu zhou chu ban she, 1985.

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Jernström, Eeva. Assessing the technical competitiveness of printing papers. Lappeenranta, Finland: Lappeenranta University of Technology, 2000.

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EUCEPA Symposium (1992 Budapest, Hungary). EUCEPA Symposium 5-8 October 1992, Budapest, Hungary: Proceedings : improvement in runnability and printability of paper and board = EUCEPA Symposium : Vorträge : Verbesserung der Laufeigenschaften und Bedruckbarkeit von Papier und Karton. [Budapest]: Papír- és Nyomdaipari Műszaki Egyesület, 1992.

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1939-, Russon Ken, ed. Papers for printing: How to choose the right paper at the right price for any printing job. Portland, OR: Coast to Coast Books, 1989.

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Book chapters on the topic "Paper Printing properties Testing"

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Yang, Meiqi, Guorong Cao, Peiyu Fu, and Lizheng Zhang. "Study on Preparation and Properties of Paper Plastic Laminatings Based on PVP and PVA." In Advances in Graphic Communication, Printing and Packaging, 928–34. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-3663-8_125.

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Qi, Yonghong, and Boqi Wu. "Research on the Influence of Optical Properties of Paper on the Ink-Jet Printing Color." In Advances in Graphic Communication, Printing and Packaging, 723–29. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-3663-8_98.

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Shen, Zuguang, Banzou You, Guocheng Han, Rui Guo, and Zhaohui Yu. "Affection to the Properties of Paper by Different Kinds of Pulp and Agents." In Advances in Graphic Communication, Printing and Packaging Technology and Materials, 664–69. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0503-1_95.

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Cheng, Li. "Study on the Correlation Between Surface Properties of Paper and Printing Tonal Gradation by Grey Correlation Method." In Advances in Graphic Communication, Printing and Packaging, 710–16. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-3663-8_96.

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Hu, Guichun, Haoran Fang, Maohai Lin, and Fuqiang Chu. "Effect of Paper Optical Properties on the Color Reproduction in Ink Jet Printing." In Lecture Notes in Electrical Engineering, 447–52. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3530-2_56.

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Zhu, Huayang, Banzou You, Xiaoling Sun, Kangmei Tan, Hongbing Cao, and Ting Chen. "Research on Properties of Bio-Based Water and Oil Resistant Paper Made by PVA Modified Beeswax." In Advances in Graphic Communication, Printing and Packaging Technology and Materials, 431–39. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0503-1_64.

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Ishikawa, Osamu, Takanori Yamashita, and Akira Tsuji. "Characterizing Mechanical Properties of Latex Film and Coating Layer in Paper Coating Using Dynamic Mechanical Thermal Analyzer (DMTA)." In Surface Phenomena and Latexes in Waterborne Coatings and Printing Technology, 91–105. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4757-2395-3_7.

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Tanabe, Kotaro, Yoshinori Tanabe, and Masami Hagiya. "Model-Based Testing for MQTT Applications." In Knowledge-Based Software Engineering: 2020, 47–59. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53949-8_5.

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Abstract Model-based testing is a widely-used vital technique for testing software running in a complex environment. In this paper, we propose extensions to existing model-based tools to apply this technique to software that employs the MQ Telemetry Transport (MQTT) protocol for transmitting messages, commonly used in the Internet of Things (IoT) environment. First, in the finite state machine used for generating test cases in a model-based testing framework, we introduce a type of transition that is triggered when receiving MQTT messages. Second, we extend the finite-state machine so that it produces test cases that reflect the characteristics of IoT software – a large number of relatively simple devices communicate with servers. Third, the concept of time is introduced into the finite state machine. Naturally, this is necessary for verifying the properties of software that runs for a long time. Moreover, to facilitate such verification, both real-time and virtual time are introduced. We implemented these extensions into a model-based testing tool, Modbat, and conducted a small experiment to confirm the feasibility, gaining positive results.
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Padhiyar, Sumit, and K. C. Sivaramakrishnan. "ConFuzz: Coverage-Guided Property Fuzzing for Event-Driven Programs." In Practical Aspects of Declarative Languages, 127–44. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67438-0_8.

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AbstractBug-free concurrent programs are hard to write due to non-determinism arising out of concurrency and program inputs. Since concurrency bugs typically manifest under specific inputs and thread schedules, conventional testing methodologies for concurrent programs like stress testing and random testing, which explore random schedules, have a strong chance of missing buggy schedules.In this paper, we introduce a novel technique that combines property-based testing with mutation-based, grey box fuzzer, applied to event-driven OCaml programs. We have implemented this technique in , a directed concurrency bug-finding tool for event-driven OCaml programs. Using , programmers specify high-level program properties as assertions in the concurrent program. uses the popular greybox fuzzer AFL to generate inputs as well as concurrent schedules to maximise the likelihood of finding new schedules and paths in the program so as to make the assertion fail. does not require any modification to the concurrent program, which is free to perform arbitrary I/O operations. Our experimental results show that is easy-to-use, effective, detects concurrency bugs faster than Node.Fz - a random fuzzer for event-driven JavaScript programs, and is able to reproduce known concurrency bugs in widely used OCaml libraries.
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Ambu, Rita, and Michele Calì. "Assessment of High Porosity Lattice Structures for Lightweight Applications." In Lecture Notes in Mechanical Engineering, 15–26. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-18326-3_2.

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AbstractAdditive manufacturing (AM) methods have a growing application in different fields such as aeronautical, automotive, biomedical, and there is a huge interest towards the extension of their use. In this paper, lattice structures for AM are analysed with regards to stiffness and printability in order to verify the suitability for applications where the main requirement of efficiency in terms of stiffness has to be balanced with other needs such as weight saving, ease of manufacturing and recycling of the material. At this aim, lattice structures with high porosity unit cells and large cell size made of a recyclable material were considered with a geometrical configuration allowing 3D printing without any supports. The lattice structures considered were based on body-centred cubic (BCC) and face centred cubic (FCC) unit cell combined with cubic cell. Finally, a multi-morphology lattice structure obtained by mixing different unit cells is also proposed. The lattice structures were modelled and structurally analysed by means of finite element method (FEM), manufactured with a Fusion deposition modelling (FDM) printer and evaluated in relation to printability and dimensional accuracy. The results show that the proposed structure with mixed cells is potentially advantageous in terms of weight saving in relation to the mechanical properties.
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Conference papers on the topic "Paper Printing properties Testing"

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Romero-Ramirez, Edwar, Charisma Clarke, Sanna F. Siddiqui, and Gerardo Carbajal. "Mechanical Properties and Durometer Testing Relationship of Thermoplastic Polyurethane." In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-69648.

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Abstract In this paper, the effect of various additive manufacturing processing parameters on thermoplastic polyurethane’s mechanical properties and the durometer hardness testing were evaluated. Additive manufacturing of thermoplastics is a rapidly growing field in many areas, from hobbyists to manufacturing industries. Parts are built layer by layer following the slicing software settings that convert a 3D object into a group of 2D regions that resembles CNC code. There is a need to understand how the mechanical properties are affected by the process parameters compared to traditional injection molding manufacturing. This thermoplastic has use in many automotive industry applications and consumer products because of its elasticity and high abrasion resistance. A generic thermoplastic polyurethane, also known as flexible TPU, with Shore A durometer hardness of 95 was used for this task. It was found that the number of solid layers impacts the mechanical properties higher than other printing parameters. Maximum tensile strength of up to 51.4±6.0 MPa for 84.1±3.8 Shore A durometer hardness was measured.
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Siwach, Gaurav, and Rahul Rai. "Conformal 3D Printing of Sensors." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-46089.

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A sensor is unobtrusive if it doesn’t interfere with the design, mechanical properties, and the functionality of the structure it is integrated with. This paper discusses the development of unobtrusive piezo-resistive sensors and their production using additive manufacturing. Short carbon fibers were dispersed in an acrylate resin and subsequently cured with UV DLP 3D printer to be used as a strain-sensing device. Varying the amount of carbon fiber resulted in resistivity variation of the composite. The composite was found to be piezo-resistive, and gauze factor at a concentration of 12% carbon fiber by volume was obtained through mechanical load testing.
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Liu, Xiaoliang, Xuedong Chen, Zhichao Fan, and Huifeng Jiang. "Preparation and Properties of Au/SnO2 Thermocouples for Material Testing Apparatus of Pressure Equipment." In ASME 2019 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/pvp2019-93346.

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Abstract Thermocouples are the most common temperature measuring components in petrochemical, metallurgical, aerospace and other fields. However, due to the influence of working environment and its own structural characteristics, the thermocouple is highly susceptible to electromagnetic interference in the environment during its work, which seriously affects its temperature measurement accuracy. In this paper, three different shapes of Au/SnO2 thermocouples were prepared by screen printing technology, and their microstructure, thermoelectric properties and anti-electromagnetic interference were studied. The results show that the Au/SnO2 thermocouples with different shapes can crystallize well after sintering at 750 °C and above. When temperature difference is from 50 to 300 °C, thermocouples with different shapes can produce stable thermoelectric potential, and the shape has no effect on the output thermoelectric potential. The Au/SnO2 thermocouple after 850 °C sintering has the best thermoelectric performance. Au/SnO2 thermocouples can work normally in electromagnetic fields of 3 V/m or less, while standard PtRh10-Pt thermocouples can not work normally in electromagnetic field of 3 V/m. The Au/SnO2 thermocouple obtained in this study has the advantages of simple preparation method, small size, stable output thermoelectric potential and strong anti-electromagnetic interference ability.
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Petrović, Saša, Nemanja Kašiković, Željko Zeljković, and Rastko Milošević. "Factors influencing mechanical properties of polyurethane foams used in compressible flexographic sleeves." In 10th International Symposium on Graphic Engineering and Design. University of Novi Sad, Faculty of technical sciences, Department of graphic engineering and design,, 2020. http://dx.doi.org/10.24867/grid-2020-p50.

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Polyurethanes are a group of polymers which are in many ways different from other types of plastic. They are used in many different areas due to the fact that many different chemicals can be used during their synthesis, resulting in a variety of structures. Sleeves are comprised of hard base often covered with compressible polyurethane (PU) foam layer. PU foam layer can have different composition and level of porosity which are the main factors influencing compressibility of the sleeve and therefore its area of use. Sleeves are also one of the least researched components in the flexographic printing process. However, mechanical properties of the polyurethane, its fatigue, lifespan and parameters influencing all of them have been extensively investigated in different areas and for different types and formulations of polyurethane. The aim of this paper is to investigate factors influencing mechanical properties of polyurethane foams used in compressible flexographic sleeves. Investigated parameters are foam density, level of strain and strain rate, influence of microstructure under different conditions and parameters influencing creep and stress relaxation. The review of the existing literature regarding mechanical properties of the PU foams makes it possible to select the parameters with the greatest possible influence on the flexographic printing process, as well as to find the most suitable methods to investigate the effect of exploitation on sleeve properties. As a large number of parameters influencing PU foam mechanical properties are fixed during printing, it can be concluded, through the review of the existing literature, that the main parameters to be investigated are the resilience of the sleeve compressible layer during cyclic compression testing (residual strain), maximum stress, Young’s modulus, hysteresis loss, and creep and stress relaxation during cyclic compression testing with strain retention.
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Damas, Sara M., and Cameron J. Turner. "The Material Testing of Nanoparticle Doped 3D Printed ABS Strain Gages for Resisitance and Stiffness." In ASME 2020 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/detc2020-22542.

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Abstract Additive manufacturing methods are becoming more prominent in the world of design and manufacturing due to their reduction of material waste versus traditional machining methods such as milling. The technology to 3D print has been around since the 1970’s. In today’s present time, we now can multi-material 3D print, however. even though we have the technology for multi-material 3D printing, standards in this field are severely lacking. Research on multi-material 3D printing and/or the combination of 3D printing filaments combined with nanoparticles is needed. One of the most common methods of 3D printing is fused deposition modeling (FDM). In this research, FDM was used to dope Acrylonitrile Butadiene Styrene (ABS), to introduce conductive properties for strain measurements. The researchers in this paper used N-Methyl-2-Pyrrolidinone (NMP) to bind the selected nanoparticles. In the first experiment the researchers tested the conductivity of the strain gages, while in the next experiment they studied the effect the various nanoparticles had on the stiffness of the 3D printed ABS strain gages. This extensive and detailed study concluded several points. First, nickel nanoparticles consistently yields the least amount of resistance. Second, multiple binder doped nanoparticle layers yield the lowest resistance. Third, NMP, does indeed improve the performance of the nanoparticles. Finally, the research demonstrated that the various nanoparticles used, when bound increased the stiffness of the ABS strain gages.
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Herrick, Joshua, Andrew Younglove, and Chris Sharp. "Influence of Manufacturing Process Parameters on GRCop-42 Produced by Selective Laser Melting." In ASME 2022 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/detc2022-92015.

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Abstract This paper looks to explore how variances in printing process parameters affect the density, porosity, and mechanical properties of additively manufactured GRCop-42, ultimately providing additional testing for this novel material. Since increased porosity can be correlated to decreased part performance, it is imperative that additive manufacturing companies understand what combination of printing parameters in the Selective Laser Melting process result in near fully dense parts. GRCop-42 presents an opportunity for the aerospace industry to make significant advancement in liquid rocket engine design. Currently there have been few studies published concerning additively manufactured GRCop-42 outside of NASA, making additional testing on vendor specific processes paramount. The GRCop-42 specimens tested in this paper were provided by i3D-MFG, a metal additive manufacturing company based in Redmond Oregon. As to not compromise their specific testing parameter sets the specimens have been codified. From the testing conducted on additive manufactured GRCop-42 for this paper, it was shown that variances in printing process parameters had significant effects on the porosity, and consequently the mechanical properties. With the addition of post processes such as Hot Isostatic Pressing, near fully dense parts were achieved. The intention of this publication is to provide an initial understanding of this new material in an effort to support its broader use in academia and industry.
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Boyd, Helen, Erwan Karjadi, Harm Demmink, Guido Ridolfi, and Han Keijzers. "Material Property Testing for Finite Element Modelling of Coatings." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-23837.

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In 2012 and 2013 Heerema Marine Contractors (HMC) performed full installation testing (bend, roller, tensioner and friction clamp) on pipes with different types of coating ranging from three layer polypropylene to thick insulation coating. The material property data as supplied by the coaters and/or the material suppliers appeared to have insufficient details for HMC to develop a model for the coated pipes. In order to obtain the missing details, HMC undertook a program of material finger printing for all coating materials used in the recent full scale testing in order to establish our own baseline for material properties. The reasons for doing so were; i) the data sheets from different suppliers of similar products were based on different test procedures and the results were not directly comparable, ii) initial testing indicated that the results quoted on the data sheets could not always be achieved by HMC and iii) the data as provided by the suppliers appeared to be not sufficient to be used for material models for finite element analysis. The focus to date has been on polyurethane based insulation materials, both for line pipe coating and for field joint coating, although the plan is to continue with polypropylene based insulation materials. The purpose of this paper is to discuss the setup of the full scale level winder and bend tests, the measurements and observations from the tests, the preliminary finite element analyses of the coating and the findings from the finger printing testing to date.
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Baumgarner, Julia, and Davide Piovesan. "Irradiation and Thermal Post-Processing for Vat-Polymerization Additive Manufacturing: Tensile Properties of Four Formlabs Resins." In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-73152.

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Abstract With the introduction and recent advances of additive manufacturing there are a number of materials available for creating medical prototypes. Of particular interest are materials used for imitating bone properties for the execution of mock preparatory surgeries. However, when designing a print for a model it is important to understand the mechanical properties of each material. One of the most common methods of 3d printing is stereolithography. In this paper, four Formlabs resins were tested in tensile loading. Clear, Durable, Tough, and High Temperature resins were used for testing. Samples were tested with and without post-processing curing. Curing was performed in a customized curing oven that follows the Formlabs requirements. After testing, mechanical properties were calculated for all sample groups.
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Mueller, Jochen, Shi En Kim, Kristina Shea, and Chiara Daraio. "Tensile Properties of Inkjet 3D Printed Parts: Critical Process Parameters and Their Efficient Analysis." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-48024.

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To design and optimize for capabilities of additive manufacturing processes it is also necessary to understand and model their variations in geometric and mechanical properties. In this paper, such variations of inkjet 3D printed parts are systematically investigated by analyzing parameters of the whole process, i.e. storage of the material, printing, testing, and storage of finished parts. The goal is to both understand the process and determine the parameters that lead to the best mechanical properties and the most accurate geometric properties. Using models based on this understanding, we can design and optimize parts, and fabricate and test them successfully, thus closing the loop. Since AM materials change rapidly and this process will have to be repeated, it is shown how to create a cost and time efficient experimental design with the one-factor-at-a-time and design of experiments methods, yielding high statistical accuracies for both main and interaction effects. The results show that the number of intersections between layers and nozzles along the load-direction has the strongest impact on the mechanical properties followed by the UV exposure time, which is investigated by part spacing, the position on the printing table and the expiry date of the material. Minor effects are found for the storage time and the surface roughness is not affected by any factor. Nozzle blockage, which leads to a smaller flow-rate of printing material, significantly affected the width and waviness of the printed product. Furthermore, the machine’s warm-up time is found to be an important factor.
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Munguia, Maria, Gabriella Shibata, Osvaldo Castro, Spencer Miesner, Sufi Asadi, Anthony De Leon, Allan Hernandez, et al. "Design, Modeling, Simulation, and Testing of Flexible Joint." In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-70558.

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Abstract Metal materials are used widely in industry for piping, as they provide desirable material properties for use in harsh environments. In this work, we explore different flexible pipe joint designs that enable fluid transport in flexible heat transfer devices. Flexible joints would allow heat transfer devices to fit in variable cooling areas. The proposed flexible joints will be 3D printed in metal with the goal of maximizing their bending angles, while minimizing volume. The objective of this research is to develop flexible pipes to connect parts involving fluid flow, and we propose three types of flexible joint designs: 1) helical coil spring, 2) torsional coil spring, and 3) serpentine structure. Then, we introduce a low-cost design process to improve these joint designs. Metal 3D printing offers increased design flexibility in comparison to traditional metal manufacturing methods. However, metal 3D printing can be labor intensive and costly, thus the number of design iterations using metal printing should be minimized during the design process. To reduce the frequency of metal prototyping, we used plastic 3D prints for rapid prototyping and evaluation. The flexible joint design considered the effects of pipe shape, pipe size, pipe diameter, free length, and total pipe length. Although mathematical models exist for the three types of flexible designs, they tend to be complex, difficult to implement, and specific to certain types of boundary conditions. In our experience, it is faster and more meaningful to perform experimental parametric studies using plastic prints due to accessibility and cost-effectiveness of plastic 3D printers. However, analytical models do offer significant insights during the design process. Thus, we developed simple analytical models for each of the three types of flexible joint designs which can be used in the initial design phase. Tests were performed to characterize the designs. Then, finite element simulations were performed for plastic prints and these simulations were validated against experimental data. We show that the results from analytical models, finite element simulations, and testing results for plastic prints are consistent, and these tools can be used to predict performance. In this paper, we discuss the following findings: 1) development of simple analytical models, including successes, limitations, and challenges; 2) the role of finite element simulations in the design process; 3) testing results from the three types of joint design; 4) quantification, interpretation, and discussion of testing results.
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Reports on the topic "Paper Printing properties Testing"

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MATERIAL PROPERTIES AND LOCAL STABILITY OF WAAM STAINLESS STEEL PLATES WITH DIFFERENT DEPOSITION RATES. The Hong Kong Institute of Steel Construction, August 2022. http://dx.doi.org/10.18057/icass2020.p.244.

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Wire arc additive manufacturing (WAAM) has significant potential to produce freeform, but structurally efficient geometries out of stainless steel, for use in the construction industry, however, there is currently no standardisation of the manufacturing parameters used to produce WAAM structures. This paper discusses an experimental programme carried out on WAAM 316L stainless steel plated structures to assess the effects of the deposition rate, which is directly associated with productivity. This programme comprises tensile tests on coupons extracted along different printing directions, geometric imperfection measurement (including surface roughness, waviness and overall out-of-straightness), and stub column tests designed to determine the local stability of unstiffened plates manufactured with different deposition rates. The applicability of current Eurocode design rules for stainless steel structures, including the ductility requirements and effective width equations, have been assessed based on the obtained experimental data.
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TESTING OF ADDITIVELY MANUFACTURED STAINLESS STEEL MATERIAL AND CROSS-SECTIONS. The Hong Kong Institute of Steel Construction, August 2022. http://dx.doi.org/10.18057/icass2020.p.175.

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Powder bed fusion (PBF) additive manufacturing has the potential for significant impact on the construction industry due to its ability to produce complex and free-form components with high-precision. However, the size of components is limited by the build envelope of PBF machines. Laser welding offers a means of joining small individual PBF parts together to create larger-scale parts. This paper investigates the microstructure and material properties of stainless steel coupons with and without laser-welded joints, in conjunction with the structural performance of stainless steel circular hollow sections (CHS) at the cross-sectional level, with all specimens printed by PBF. The PBF base material exhibited a typical cellular microstructure, while the weld material consisted of equiaxed, columnar and cellular dendrite microstructures. The proof strengths of the weld were lower than those of the base metal, and the strengths of the PBF base metal were dependent on the build direction – the vertically built coupons showed lower proof strengths than the horizontal coupons. The axial resistances of the PBF CHS are safely predicted by the EN 1993-1-4 design provisions and the deformation-based continuous strength method (CSM).
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LOW-TEMPERATURE COMPRESSION BEHAVIOUR OF CIRCULAR STUB STAINLESS-STEEL TUBULAR COLUMNS. The Hong Kong Institute of Steel Construction, September 2022. http://dx.doi.org/10.18057/ijasc.2022.18.3.4.

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This paper firstly studies mechanical properties of stainless steel (SS) S30408 at the low temperature (T) range of -80~20℃. Further compression tests are carried out on 20 SS stub tubular columns (SSSTCs) at low temperatures of -80, -60, -30, and 20℃ to investigate their low-temperature compression behaviour. Including the testing low temperatures, the wall thickness of SS tube (t) is the other investigated parameters. Test results show that decreasing the T from 20 to -80℃ improves the yield and ultimate strength of stainless steel by 29% and 80%, respectively, but reduces its ductility by about 25%. Under low-temperature compression, elephant foot local buckling occurs to most of SSSTCs and inelastic inward and outward local buckling occurred to specimens with 6 mm-thick SS tube. Test results also show that the decreasing T value increases the strength and stiffness of SSSTCs, but compromises their ductility; the wall thickness of SSSTCs significantly improves their strength, stiffness, and ductility. This paper also develops 3D finite element model (FEM) to estimate the low-temperature compression behaviour of SSSTCs, which considers nonlinearities of material and geometry, geometric imperfections, and influences of low temperatures. The validations show it predicts reasonably well the low-temperature compression behaviours of SSSTCs.
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