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Journal articles on the topic 'Injection tool'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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1

Kashouty, Rennie, and Ghazy. "Tool Life Performance of Injection Mould Tooling Fabricated by Selective Laser Melting for High-Volume Production." Materials 12, no. 23 (November 26, 2019): 3910. http://dx.doi.org/10.3390/ma12233910.

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Rapid Tooling processes are developing and proving to be a reliable method to compete with subtractive techniques for tool making. This paper investigates large volume production of components produced from Selective Laser Melting (SLM) fabricated injection moulding tool inserts. To date, other researchers have focused primarily on investigating the use of additive manufacturing technology for injection moulding for low-volume component production rather than high volume production. In this study, SLM technology has been used to fabricate four Stainless Steel 316L tool inserts of a similar geometry for an after-market automotive spare part. The SLM tool inserts have been evaluated to analyse the maximum number of successful injections and quality of performance. Microstructure inspection and chemical composition analysis have been investigated. Performance tests were conducted for the four tool inserts before and after injection moulding in the context of hardness testing and dimensional accuracy. For the first reported time, 150,000 injected products were successfully produced from the four SLM tool inserts. Tool inserts performance was monitored under actual operating conditions considering high-level demands. In the scope of this research, SLM proved to be a dependable manufacturing technique for most part geometries and an effective alternative to subtractive manufacturing for high-volume injection moulding tools for the aftermarket automotive sector.

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FUJIEDA, Ryuuichirou, and Masanori KUNIEDA. "2107 Research on Molding Conditions in Micro Injection Molding using Laminated Tool." Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2015.8 (2015): _2107–1_—_2107–6_. http://dx.doi.org/10.1299/jsmelem.2015.8._2107-1_.

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3

Landau, Marina. "Using cannulas for dermal filler placement: why, when and how?" Journal of Aesthetic Nursing 8, no. 5 (June 2, 2019): 230–33. http://dx.doi.org/10.12968/joan.2019.8.5.230.

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Traditionally, dermal fillers have been administered to the face using a hypodermic needle. However, injecting using cannulas has become increasingly popular over the past decade, due to the changing goals of treatment, aims to improve patient experience and attemting to prevent complications. Many dermal filler products are now sold packaged with both a needle and a cannula in order to give the practitioner the choice of injection tool. It is therefore essential that the aesthetic practitioner is well educated on the topic of how to select the best injection tool for a procedure. This article aims to asses why we have seen an increase in the use of cannulas in administering this procedure, with the hope of helping the aesthetic practitioner to make the best decision regarding injection tools.

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4

Cholifah, Siti, Paramitha Amelia Kusumawardani, and Miftahul Muslih. "Differences in fasting blood glucose levels in acceptors Progestin Injections and Combination Injections." Jurnal Ners dan Kebidanan Indonesia 8, no. 3 (November 19, 2020): 247. http://dx.doi.org/10.21927/jnki.2020.8(3).247-252.

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<em>Efforts to limit and regulate birth spacing as a goal to create quality families and healthy families, the government encourages people to use contraceptives as birth control. One of these contraceptives is injection contraception. Injecting contraception is the most widely used contraceptive tool by the people of Indonesia, is considered effective, practical, but has several side effects, the most worrying is that it affects blood glucose. Blood glucose levels in the human body that increase more than normal can be a symptom of diabetes mellitus. The purpose of this study is to determine differences in blood glucose levels in progestin injection and combined injection contraceptive acceptors. Observational research design using a cross sectional approach. The study population was all injectable acceptors. Samples were taken that met the inclusion criteria, namely respondents were willing to be examined, there was no history of diabetes mellitus (DM), less than 40 years of age, acceptors of at least 6-8 hours fasting. Sampling was carried out using consecutive sampling techniques totaling 50 acceptors (25 progestin injection acceptors, 25 combined injection acceptors). Data were analyzed by Witney mann test using α = 0.05. The results showed the mean fasting blood glucose for progestin injection acceptors was higher than for combination injections, the test results P = 0.008 <α = 0.05. The conclusions of the study show that there are significant differences in blood glucose levels in progestin-injecting acceptors and this combination means that progestin-injecting contraceptives have a higher impact on increasing fasting blood sugar levels compared with combined injection contraception. Suggestions for health workers to control blood glucose injector acceptors at acceptors who experience high glucose levels are recommended to replace non-hormonal contraceptive methods.</em>

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Chen, Zhi, Feng Zhu, Youjun Zhang, Weiping Lv, and Zheng Zhang. "Development of gasification agent injection tool for underground coal gasification." E3S Web of Conferences 267 (2021): 02056. http://dx.doi.org/10.1051/e3sconf/202126702056.

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The underground coal gasification (UCG) technology is basically mature, but the influence of its own process and tools slows down its industrialization progress. This paper introduced the development and field test of two new UCG coiled-tubing gasification agent injection tools. The test results show that the two kinds of gasification agent injection tools ensure the injection point under control by conducting downhole temperature measurement and ground monitoring jointly. The problem that the tool is burnt by the backfire is solved by designing a backfire prevention device. To realize low pressure drop, the gasification agent flow channel inside the tool is designed optimally to keep the tool pressure drop not more than 0.5 MPa and the system pressure drop not more than 3 MPa. The tool overall has the characteristics of low pressure drop, high temperature resistance, backfire prevention and anti burning to satisfy the demand of the field test. This technology is a new achievement in the development of UCG technology and equipment in China. The research conclusions can provide technical reference for developing a new generation of UCG technology.

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6

Chen, Y., and X. Ren. "High performance tool for liquid manure injection." Soil and Tillage Research 67, no. 1 (August 2002): 75–83. http://dx.doi.org/10.1016/s0167-1987(02)00057-0.

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7

Neeraja, Ch, and Ch Divya Bharathi. "Design And Optimization of Injection Mould Tool." IOSR Journal of Mechanical and Civil Engineering 16, no. 053 (December 2016): 36–43. http://dx.doi.org/10.9790/1684-16053043643.

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8

Simpson, Patrick, Autumn D. Zakula, Jake Nelson, Jeremy K. Dworshak, Eric M. Johnson, and Chad A. Ulven. "Injection molding with an additive manufactured tool." Polymer Engineering & Science 59, no. 9 (July 25, 2019): 1911–18. http://dx.doi.org/10.1002/pen.25192.

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9

Nelson, Jake W., James J. LaValle, Brian D. Kautzman, Jeremy K. Dworshak, Eric M. Johnson, and Chad A. Ulven. "Injection Molding with an Additive Manufacturing Tool." Plastics Engineering 73, no. 7 (July 2017): 60–66. http://dx.doi.org/10.1002/j.1941-9635.2017.tb01760.x.

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10

Rudrakshi, Swathi, Vasujadevi Midasala, and S. Naga Kishore Bhavanam. "Implementation of FPGA Based Fault Injection Tool (FITO) for Testing Fault Tolerant Designs." International Journal of Engineering and Technology 4, no. 5 (2012): 522–26. http://dx.doi.org/10.7763/ijet.2012.v4.424.

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11

Bashah Mat Ali, Abdul, Ala’ Yaseen Ibrahim Shakhatreh, Mohd Syazwan Abdullah, and Jasem Alostad. "SQL-injection vulnerability scanning tool for automatic creation of SQL-injection attacks." Procedia Computer Science 3 (2011): 453–58. http://dx.doi.org/10.1016/j.procs.2010.12.076.

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12

Glozer, G. R., and J. R. Brevick. "Laminate Tooling for Injection Moulding." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 207, no. 1 (February 1993): 9–14. http://dx.doi.org/10.1243/pime_proc_1993_207_056_02.

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The main goal of this research was to develop a method of prototyping injection moulded parts which produces a representation of the production part, including not only the part shape and functionality but the process as well. A prototyping method that meets all of these requirements could greatly aid in reducing the time required to bring a new product to the market by using the information gained from this prototype to manufacture a production tool that will be right the first time. Tooling constructed of laminations is appealing for prototyping or production because of the flexibility it affords in terms of rapidly altering mould geometry, gating or cooling passage design. This report summarizes a ‘proof of concept’ project which took a selected part geometry through the entire laminate tool manufacturing process. This report is divided into five sections: (1) introduction to the prototyping process, (2) background of current prototyping processes and description of the laminate tooling method, (3) description of the geometry selected for this work and the manufacturing details, (4) evaluation of the performance of the laminate injection mould and (5) conclusions.

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13

Huang, Bin, Xiaohui Li, Cheng Fu, Ying Wang, and Haoran Cheng. "Study Rheological Behavior of Polymer Solution in Different-Medium-Injection-Tools." Polymers 11, no. 2 (February 13, 2019): 319. http://dx.doi.org/10.3390/polym11020319.

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Previous studies showed the difficulty during polymer flooding and the low producing degree for the low permeability layer. To solve the problem, Daqing, the first oil company, puts forward the polymer-separate-layer-injection-technology which separates mass and pressure in a single pipe. This technology mainly increases the control range of injection pressure of fluid by using the annular de-pressure tool, and reasonably distributes the molecular weight of the polymer injected into the thin and poor layers through the shearing of the different-medium-injection-tools. This occurs, in order to take advantage of the shearing thinning property of polymer solution and avoid the energy loss caused by the turbulent flow of polymer solution due to excessive injection rate in different injection tools. Combining rheological property of polymer and local perturbation theory, a rheological model of polymer solution in different-medium-injection-tools is derived and the maximum injection velocity is determined. The ranges of polymer viscosity in different injection tools are mainly determined by the structures of the different injection tools. However, the value of polymer viscosity is mainly determined by the concentration of polymer solution. So, the relation between the molecular weight of polymer and the permeability of layers should be firstly determined, and then the structural parameter combination of the different-medium-injection-tool should be optimized. The results of the study are important for regulating polymer injection parameters in the oilfield which enhances the oil recovery with reduced the cost.

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14

Sevivas, Nuno, Fábio Gabriel Teixeira, Raquel Portugal, Luís Araújo, Luís Filipe Carriço, Nuno Ferreira, Manuel Vieira da Silva, et al. "Mesenchymal Stem Cell Secretome: A Potential Tool for the Prevention of Muscle Degenerative Changes Associated With Chronic Rotator Cuff Tears." American Journal of Sports Medicine 45, no. 1 (August 20, 2016): 179–88. http://dx.doi.org/10.1177/0363546516657827.

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Background: Massive rotator cuff tears (MRCTs) are usually chronic lesions with pronounced degenerative changes, where advanced fatty degeneration and atrophy can make the tear irreparable. Human mesenchymal stem cells (hMSCs) secrete a range of growth factors and vesicular systems, known as secretome, that mediates regenerative processes in tissues undergoing degeneration. Purpose: To study the effect of hMSC secretome on muscular degenerative changes and shoulder function on a rat MRCT model. Study Design: Controlled laboratory study. Methods: A bilateral 2-tendon (supraspinatus and infraspinatus) section was performed to create an MRCT in a rat model. Forty-four Wistar-Han rats were randomly assigned to 6 groups: control group (sham surgery), lesion control group (MRCT), and 4 treated-lesion groups according to the site and periodicity of hMSC secretome injection: single local injection, multiple local injections, single systemic injection, and multiple systemic injections. Forelimb function was analyzed with the staircase test. Atrophy and fatty degeneration of the muscle were evaluated at 8 and 16 weeks after injury. A proteomic analysis was conducted to identify the molecules present in the hMSC secretome that can be associated with muscular degeneration prevention. Results: When untreated for 8 weeks, the MRCT rats exhibited a significantly higher fat content (0.73% ± 0.19%) compared with rats treated with a single local injection (0.21% ± 0.04%; P < .01) or multiple systemic injections (0.25% ± 0.10%; P < .05) of hMSC secretome. At 16 weeks after injury, a protective effect of the secretome in the multiple systemic injections (0.62% ± 0.14%; P < .001), single local injection (0.76% ± 0.17%; P < .001), and multiple local injections (1.35% ± 0.21%; P < .05) was observed when compared with the untreated MRCT group (2.51% ± 0.42%). Regarding muscle atrophy, 8 weeks after injury, only the single local injection group (0.0993% ± 0.0036%) presented a significantly higher muscle mass than that of the untreated MRCT group (0.0794% ± 0.0047%; P < .05). Finally, the proteomic analysis revealed the presence of important proteins with muscle regeneration, namely, pigment epithelium-derived factor and follistatin. Conclusion: The study data suggest that hMSC secretome effectively decreases the fatty degeneration and atrophy of the rotator cuff muscles. Clinical Relevance: We describe a new approach for decreasing the characteristic muscle degeneration associated with chronic rotator cuff tears. This strategy is particularly important for patients whose tendon healing after later surgical repair could be compromised by the progressing degenerative changes. In addition, both precise intramuscular local injection and multiple systemic secretome injections have been shown to be promising delivery forms for preventing muscle degeneration.

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15

Lee, EH, E. Jutkowitz, S. Parasuraman, C. Derk, and LT Pizzi. "PMS36 INJECTION SITE REACTION QUESTIONNAIRE: AN ADEQUATE TOOL FOR MEASURING INJECTION SITE REACTIONS?" Value in Health 13, no. 3 (May 2010): A129. http://dx.doi.org/10.1016/s1098-3015(10)72624-3.

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16

Fibich, Christian, Peter Rössler, Stefan Tauner, Herbert Taucher, and Martin Matschnig. "A netlist-level fault-injection tool for FPGAs." e & i Elektrotechnik und Informationstechnik 132, no. 6 (August 13, 2015): 274–81. http://dx.doi.org/10.1007/s00502-015-0315-4.

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17

Quintino, Maria S M., and Lúcio Angnes. "Batch Injection Analysis: An Almost Unexplored Powerful Tool." Electroanalysis 16, no. 7 (April 2004): 513–23. http://dx.doi.org/10.1002/elan.200302878.

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18

Oh, Se-Ra, Sanghyun Cho, and Young-Gab Kim. "GPC: Ad Injection Detection Tool for Mobile Application." Asia-pacific Journal of Multimedia services convergent with Art, Humanities, and Sociology 7, no. 12 (December 31, 2017): 881–89. http://dx.doi.org/10.14257/ajmahs.2017.12.48.

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19

Bagalkot, Anurag, Dirk Pons, Digby Symons, and Don Clucas. "Analysis of Raised Feature Failures on 3D Printed Injection Moulds." Polymers 13, no. 10 (May 11, 2021): 1541. http://dx.doi.org/10.3390/polym13101541.

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Background: Polymer-based 3D Printed Injection Mould (3DIM) inserts are used as a cost-effective method for low volume injection moulding (50–500 parts). However, abrupt failure leading to a short tool life is a common shortcoming of 3DIM. Need: The underlying causes of raised feature failures on 3DIM are not well known. Failure is commonly attributed to bending or shearing of raised features on the tool. Understanding the causes may help in delaying the failure and increasing tool life. Approach: Tool failure was analysed from a first-principles perspective, using pressure and temperature fields as determined by mould flow simulation. Experimental results were also obtained for two types of tool material (Visijet M3-X and Digital ABS) with polycarbonate (Lexan 943A) as the part material. Findings: Results find against the idea that pin failure in 3DIM tools is caused by bending and shear failures induced by injection pressures. We also conclude that failure of raised features is not necessarily an abrupt failure as mentioned in the literature. Originality: The generally accepted explanation for the failure of raised features in 3DIM tooling is that injection pressures cause bending and shear failure. This paper disconfirms this notion on theoretical and experimental grounds.

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20

Hidayat, Rahmat, Dwi Sudarno Putra, and Irma Yulia Basri. "Design of Microcontroller Based Injector Test Kit." MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering 1, no. 1 (January 15, 2019): 35–44. http://dx.doi.org/10.46574/motivection.v1i1.12.

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Automotive technology is growing very rapidly. one of the conventional fuel intake systems to the injection system. where is the fuel intake by the ECU based on engine conditions detected by electronic sensors. The injection will work optimally if the injector that is working is not blocked or has problems, the injector determines the smoothness of the injection system. If the injector's performance is less than optimal, the injection system is not optimal and the engine performance is disrupted. To maintain the injector before working optimally, routine cleaning of the injector is carried out, the problem is the scarcity of the injector test equipment encountered in the field because of the high cost of the equipment, therefore the researchers innovated the design of the injector test equipment using EFI fuel system capable of handling problematic injector problems and the scarcity of this tool in the field.

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21

Jonas, J. B., A. SÖfker, and R. Degenring. "Intravitreal Triamcinolone Acetonide as an Additional Tool in Pars Plana Vitrectomy for Proliferative Diabetic Retinopathy." European Journal of Ophthalmology 13, no. 5 (June 2003): 468–73. http://dx.doi.org/10.1177/112067210301300508.

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Purpose To evaluate the safety and efficacy of intravitreal injections of crystalline triamcinolone acetonide as an adjunctive procedure in pars plana vitrectomy for proliferative diabetic retinopathy. Methods This nonrandomized comparative study included 30 patients (32 eyes) who underwent standardized pars plana vitrectomy for treatment of proliferative diabetic retinopathy and who received an intravitreal injection of 25 mg triamcinolone acetonide at the end of surgery. Mean follow-up time was 5.60 ± 5.14 months. The study group was compared with a control group (32 eyes) matched with the study group for preoperative and intraoperative parameters and who underwent pars plana vitrectomy for proliferative diabetic retinopathy without intravitreal injection of triamcinolone acetonide. Results The study group and the control group did not vary significantly in frequency of postoperative retinal detachment, re-pars plana vitrectomy, or postoperative enucleation or phthisis bulbi, or in best postoperative visual acuity, visual acuity at end of the study, or gain in visual acuity. Conclusions In this pilot study, the study group with pars plana vitrectomy and intravitreal triamcinolone acetonide injection compared with the nonrandomized control group without intravitreal triamcinolone acetonide injection did not show a higher than usual rate of postoperative complications. As a corollary, however, the data do not suggest the adjunct use of 25 mg intravitreal triamcinolone acetonide combined with pars plana vitrectomy as treatment of proliferative diabetic retinopathy.

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Zhou, Dao Feng, Xiu Min Yu, Long Bao, Li Feng Zhao, and Wan Qiang Qi. "Design of Driving Circuit of GDI Injector and Experiment Verification." Advanced Materials Research 566 (September 2012): 3–6. http://dx.doi.org/10.4028/www.scientific.net/amr.566.3.

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In order to precisely control the injection responsivity of the Gasoline Direct Injection（GDI）engine，a higher requirement of the injector drive circuit should be achieved[5]. This paper introduces a new design of driving circuit for the injector of the EA888 engine. the thesis creates a simulation model of BOOST converter circuit using multisim simulation tool, Simulation results show that voltage ripple is less than 10%.The characteristics of GDI injector are measured and analyzed , the feasibility of the driving circuit is verified.

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23

Huang, Hu, Fu, Cheng, Wang, and Wang. "Molecular Morphology and Viscoelasticity of ASP Solution under the Action of a Different Medium Injection Tool." Polymers 11, no. 8 (August 2, 2019): 1299. http://dx.doi.org/10.3390/polym11081299.

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In order to improve the oil displacement effect of alkali/surfactant/polymer (ASP) solution in low-permeability oil layers, Daqing Oilfield has proposed a separate injection technology. The objective of separate injection technology is to reduce the viscosity of ASP solution through a different medium injection tool and increase the injection amount of ASP solution in low permeability oil layer, thus improving the oil displacement effect. In order to study the effect of the different medium injection tool on ASP solution, SEM is used to observe the changes in molecular micromorphology before and after the ASP solution flows through the tool. Then, the influence of the tool on viscosity and the first normal stress difference of the solution are studied through static shear experiments. Finally, the storage and loss modulus of the solution are measured through dynamic mechanical experiments and the relaxation time and zero shear viscosity of the solution are verified and compared. The results show that molecular chains are obviously broken and the grid structure is destroyed after the ASP solution is acted on by the different medium injection tool. The viscosity and elasticity of ASP solution decrease, and the influence degree of the different medium injection tool on viscosity is greater than elasticity. The results of the steady shear experiment and dynamic mechanics experiment are consistent. Therefore, the different medium injection tool can achieve the purpose of use, which is conducive to the injection of displacement fluid into low-permeability oil layers and enhance the recovery ratio.

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Xia, Yu. "Plastic End Cap Injection Tool Design and Molding Analysis Based on Software Ug and Moldflow." Advanced Materials Research 591-593 (November 2012): 119–22. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.119.

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Software UG is used to design plastic end cap injection tools and to do injection molding analysis. Firstly, use the modeling function of the software to design the structure of a plastic product. Secondly, design the mold according to characteristics of the product and generate a tool drawing. Finally, use moldflow software to analyze injection system of a 2-cavity tool, the best position of feed gate and plastic flow in the cavities, to improve the type, size and position of the feed gate and distribution of runners, as well as to reduce the cycle time and processing cost to the largest extent. This paper is to adopt Moldflow software to analyze the temperature, pressure and filling of the designed injection molding, and determine the design structure of the molding through improving the molding design according to the analysis results.

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Kek, Tomaž, Dragan Kusić, and Janez Grum. "Wavelet Packet Decomposition to Characterize Injection Molding Tool Damage." Applied Sciences 6, no. 2 (February 4, 2016): 45. http://dx.doi.org/10.3390/app6020045.

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Sartini, Raquel P., Elias A. G. Zagatto, and Cláudio C. Oliveira. "Flow Injection as a Teaching Tool for Gravimetric Analysis." Journal of Chemical Education 77, no. 6 (June 2000): 735. http://dx.doi.org/10.1021/ed077p735.

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Hernández, P., S. Taboada, L. Suárez, M. D. Marrero, F. Ortega, and A. Benítez. "Interactive Learning Tool in Product Development for Injection Moulding." Procedia Engineering 132 (2015): 197–204. http://dx.doi.org/10.1016/j.proeng.2015.12.470.

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28

Weispfenning, Aaron M., and Robert C. Borden. "A design tool for planning emulsified oil-injection systems." Remediation Journal 18, no. 4 (June 2008): 33–47. http://dx.doi.org/10.1002/rem.20180.

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Zhao, Juanjuan, and Changhua Liu. "Design and Implementation of SQL Injection Vulnerability Scanning Tool." Journal of Physics: Conference Series 1575 (June 2020): 012094. http://dx.doi.org/10.1088/1742-6596/1575/1/012094.

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Christian, Gary D., and Jaromir Ruzicka. "Flow injection analysis: a novel tool for plasma spectroscopy." Spectrochimica Acta Part B: Atomic Spectroscopy 42, no. 1-2 (January 1987): 157–67. http://dx.doi.org/10.1016/0584-8547(87)80058-7.

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Kyogoku, Hideki. "C-17 Fabrication of Ti-Ni Shape Memory Alloy by Metal Injection Molding(Session: MIM/Tool)." Proceedings of the Asian Symposium on Materials and Processing 2006 (2006): 64. http://dx.doi.org/10.1299/jsmeasmp.2006.64.

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Elnahry, Ayman G., Ahmed A. Abdel-Kader, Karim A. Raafat, and Khaled Elrakhawy. "Evaluation of the Effect of Repeated Intravitreal Bevacizumab Injections on the Macular Microvasculature of a Diabetic Patient Using Optical Coherence Tomography Angiography." Case Reports in Ophthalmological Medicine 2019 (April 18, 2019): 1–4. http://dx.doi.org/10.1155/2019/3936168.

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A 53-year-old female patient with center-involving diabetic macular edema affecting the left eye was imaged using optical coherence tomography angiography (OCTA) in both eyes. She underwent three monthly intravitreal bevacizumab injections in the left eye only and OCTA was repeated in both eyes one month following the last injection and showed decreased vascular density (VD) in the treated left eye but not in the untreated right eye compared to baseline. No further injections were required in either eye, and OCTA was done in both eyes 4 months following the last injection which showed improved VD of the left eye with stable VD in the right. Three monthly intravitreal bevacizumab injections were then required in both eyes; then OCTA was repeated following the last injection and revealed decreased VD in both eyes compared to previous scan. OCTA could be a useful tool for detecting VD changes following bevacizumab injections in diabetics.

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Ruedas Rama, M. J., A. Ruiz Medina, and A. Molina Dı́az. "Bead injection spectroscopy-flow injection analysis (BIS-FIA): an interesting tool applicable to pharmaceutical analysis." Journal of Pharmaceutical and Biomedical Analysis 35, no. 5 (September 2004): 1027–34. http://dx.doi.org/10.1016/j.jpba.2004.03.010.

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Gheisari, Reza, Paulo Bártolo, Nicholas Goddard, and Marco Andre das Neves Domingos. "An experimental study to investigate the micro-stereolithography tools for micro injection molding." Rapid Prototyping Journal 23, no. 4 (June 20, 2017): 711–19. http://dx.doi.org/10.1108/rpj-10-2015-0152.

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Purpose The use of microstereolithography (μSL) parts as micro-injection molding (μIM) tools greatly reduces the time and cost to product and offers unique solutions for complex design issues. However, they present challenges to designers because of their strength, thermal characteristics and shorter lifetimes as compared to other mold materials. The purpose of this study is to use SL to build rapid injection mold tools directly combining micro features for short-run production. Design/methodology/approach In total, three tool inserts were produced. Two different μSL mold inserts were produced and evaluated in terms of different build approaches of micro features. One of the inserts includes micro features built horizontally, while the other one collaborates features built vertically, both having same geometrical dimensions. To evaluate the replication capability of prototype tools, two different thicknesses were set for micro features, that is, 30 and 120 μm. The mold inserts were assembled on a metallic mold frame and tested with polypropylene (PP). Findings It was observed that using inappropriate resin to fabricate the mold inserts can lead to inaccurate geometrical dimensions of the tool. Therefore, the material with high glass transition temperature (Tg) and low thermal conductivity is preferred. Also, the results of this research work showed that the processed material and technology play an important role both on part quality and tool life. After investigating the tool failure mechanisms during the injection, it was observed that tool failure occurred mainly because of excessive flexural stresses and ejection forces during the cavity filling and part ejection phases, respectively. Originality/value The paper describes the capability of μSL mold inserts for the production of small batches of micro-cantilevers which are used in MEMS relays.

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FAURAX, OLIVIER, and TRAIAN MUNTEAN. "SECURITY ANALYSIS OF AES USING FUNCTIONALITY FAULT MODEL." Journal of Circuits, Systems and Computers 16, no. 06 (December 2007): 883–94. http://dx.doi.org/10.1142/s0218126607004040.

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Security of cryptographic circuits is a major concern. Smartcards are targeted by sophisticated attacks like fault attacks that combine physical disturbance and cryptanalysis. We propose a methodology and a tool (PAFI) to analyze the robustness of circuits under fault attacks using fault injection in simulation. The number of injections is reduced by taking into account the function of the latches in the whole circuit. We tested a circuit implementing the cryptosystem AES and showed that our approach reduces the number of fault injections to be performed (- 80%). Moreover, most of the selected injection points are the ones that lead to known fault attacks (95%).

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Hopkinson, Neil, and Phill Dickens. "Predicting stereolithography injection mould tool behaviour using models to predict ejection force and tool strength." International Journal of Production Research 38, no. 16 (November 2000): 3747–57. http://dx.doi.org/10.1080/00207540050175987.

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37

Ditsche, Adrian, and Thomas Seefeld. "Agglomerated Tungsten Carbide: A New Approach for Tool Surface Reinforcement." Key Engineering Materials 809 (June 2019): 121–27. http://dx.doi.org/10.4028/www.scientific.net/kem.809.121.

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Abstract:

For the first time tungsten carbide particles were deliberately agglomerated by two-step laser melt injection. After a regular laser melt injection, a second laser melt injection was performed with additional tungsten carbide particles in order to generate a large local agglomerate. The influence of laser power, laser spot diameter, powder feeding rate and pulse time on the agglomeration process was examined and depended on the energy input and tungsten carbide quantity introduced into the metal matrix composite surface. Chemical composition of the agglomerates corresponded with the values of tungsten carbide and the agglomerate hardness was slightly lower. It is intended to apply this agglomerated tungsten carbide for deep drawing tools under Dry Metal Forming conditions.

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38

Harris, R. A., H. A. Newlyn, and P. M. Dickens. "Selection of mould design variables in direct stereolithography injection mould tooling." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 216, no. 4 (April 1, 2002): 499–505. http://dx.doi.org/10.1243/0954405021520193.

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Stereolithography (SL) can be used rapidly to produce injection moulding tools. The disadvantage of the technique is that it is capable of producing only a small number of parts before failure. Stereolithography tools may break under the force exerted by part ejection when the friction between a moulding and a feature of the tool is greater than the tensile strength of the tool, resulting in tensile failure. Very few justified recommendations exist concerning the choice of mould design variables that can lower the part ejection force experienced and reduce the risk of SL tool failure. This research investigates the ejection forces resulting from the injection moulding of polypropylene (PP), acrylonitrile-butadiene-styrene (ABS) and polyamide 66 (PA66) parts from SL tools that are identical in all respects except for their build layer thickness (a process variable when generating the SL tooling cavities) and incorporated draft angles (a tooling design variable). This work attempts to identify appropriate evidence for recommendations with respect to these variables and SL injection moulding. The results show that linear adjustment of draft angle results in a fairly minor linear change in part ejection force according to the moulding material. A linear adjustment of the build layer thickness results in a greater change in part ejection force as a more non-linear relationship. In both cases the greatest ejection forces were experienced by PA66, then ABS and then the PP parts. The results also show that the surface roughness of all tools remains unchanged after moulding a number of parts in all polymers. A mathematical model was used in an attempt to predict ejection forces according to the moulding material used. This model did reflect the experimental results in terms of relative values but not in absolute values, which may be due to the limitations imposed by the development of the expressions and uncertainty about some specific values.

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Zhang, H., and R. M. German. "Addition of carbides on sintering of injection-moulded tool steel." Metal Powder Report 57, no. 7-8 (July 2002): 87. http://dx.doi.org/10.1016/s0026-0657(02)80358-7.

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40

Myers, N. S., and R. M. German. "Supersolidus liquid phase sintering of injection moulded M2 tool steel." Metal Powder Report 53, no. 7-8 (July 1998): 46. http://dx.doi.org/10.1016/s0026-0657(98)85141-2.

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41

Polevoi, A. R., M. Sugihara, H. Takenaga, A. Isayama, N. Oyama, A. Loarte, G. Saibene, and G. V. Pereverzev. "Pellet injection as a possible tool for plasma performance improvement." Nuclear Fusion 43, no. 10 (September 4, 2003): 1072–76. http://dx.doi.org/10.1088/0029-5515/43/10/008.

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42

Hirota, Hidenobu, Tomohiro Kawano, Makoto Shimpo, Noto Kazutaka, Takui Uematsu, Nazuki Honda, Takanori Kiyokura, and Tetsuya Manabe. "Optical Cable Changeover Tool With Light Injection and Detection Technology." Journal of Lightwave Technology 34, no. 14 (July 15, 2016): 3379–88. http://dx.doi.org/10.1109/jlt.2016.2568221.

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43

Brock, John M., and Paul K. Wright. "Design tool for injection molded snap fits in consumer products." Journal of Manufacturing Systems 21, no. 1 (January 2002): 32–39. http://dx.doi.org/10.1016/s0278-6125(02)90010-5.

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44

Wallach, Edward E., Gianpiero D. Palermo, Jacques Cohen, and Zev Rosenwaks. "Intracytoplasmic sperm injection: a powerful tool to overcome fertilization failure." Fertility and Sterility 65, no. 5 (May 1996): 899–908. http://dx.doi.org/10.1016/s0015-0282(16)58257-0.

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45

Jezierski, Jan, and Krzysztof Janerka. "Pneumatic powder injection technique as a tool for waste utilisation." International Journal of Environment and Waste Management 2, no. 6 (2008): 636. http://dx.doi.org/10.1504/ijewm.2008.021866.

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46

de Castro, M. D. Luque. "Flow Injection Analysis: a new tool to automate extraction processes." Journal of Automatic Chemistry 8, no. 2 (1986): 56–62. http://dx.doi.org/10.1155/s1463924686000135.

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47

Alderighi, Monica, Fabio Casini, Sergio D'Angelo, Marcello Mancini, David Merodio Codinachs, Sandro Pastore, Christian Poivey, Giacomo R. Sechi, Gabriele Sorrenti, and Roland Weigand. "Experimental Validation of Fault Injection Analyses by the FLIPPER Tool." IEEE Transactions on Nuclear Science 57, no. 4 (August 2010): 2129–34. http://dx.doi.org/10.1109/tns.2010.2043855.

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王, 继飞. "The Design of Combined Injection Tool for External Casing Packer." Mine Engineering 03, no. 04 (2015): 173–78. http://dx.doi.org/10.12677/me.2015.34024.

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Guo, Xiaoyu, Hyun-Jae Kang, Ralph Etienne-Cummings, and Emad M. Boctor. "Active Ultrasound Pattern Injection System (AUSPIS) for Interventional Tool Guidance." PLoS ONE 9, no. 10 (October 22, 2014): e104262. http://dx.doi.org/10.1371/journal.pone.0104262.

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50

Geiger, Emil J., Dieudonne A. Mair, Frank Svec, and Albert P. Pisano. "Development of an injection molding tool for complex microfluidic geometries." Microsystem Technologies 17, no. 9 (July 28, 2011): 1537–40. http://dx.doi.org/10.1007/s00542-011-1323-x.

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