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Relevant bibliographies by topics / ADDITIVE METHOD

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Academic literature on the topic 'ADDITIVE METHOD'

Author: Grafiati

Published: 11 August 2021

Last updated: 1 February 2022

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Journal articles on the topic "ADDITIVE METHOD"

1

Xiang, Lingyun, Jiaohua Qin, Xiao Yang, and Qichao Tang. "n Adaptive Steganographic Method Using Additive Noise." Journal of Computers 11, no. 3 (May 2016): 207–15. http://dx.doi.org/10.17706/jcp.11.3.207-215.

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NAKAGAWA, Yasutada. "1802 FEM Analysis of Additive Manufacturing by Powder Bed Fusion Method." Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2015.8 (2015): _1802–1_—_1802–4_. http://dx.doi.org/10.1299/jsmelem.2015.8._1802-1_.

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Gorbenko, N. I., and V. P. Il’in. "The Additive Peaceman–Rachford Method." Journal of Mathematical Sciences 216, no. 6 (June 25, 2016): 753–60. http://dx.doi.org/10.1007/s10958-016-2939-2.

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Pavarino, Luca F. "Additive Schwarz methods for thep-version finite element method." Numerische Mathematik 66, no. 1 (December 1993): 493–515. http://dx.doi.org/10.1007/bf01385709.

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Shome, Biswadip. "An Enhanced Additive Correction Multigrid Method." Numerical Heat Transfer, Part B: Fundamentals 49, no. 4 (October 2006): 395–407. http://dx.doi.org/10.1080/10407790500434117.

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Hamidoune, Y. O. "An Isoperimetric Method in Additive Theory." Journal of Algebra 179, no. 2 (January 1996): 622–30. http://dx.doi.org/10.1006/jabr.1996.0028.

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Tran, Thanh, and Ernst P. Stephan. "Additive schwarz methods for the H-version boundary element method." Applicable Analysis 60, no. 1-2 (February 1996): 63–84. http://dx.doi.org/10.1080/00036819608840418.

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Haferssas, R., P. Jolivet, and F. Nataf. "An Additive Schwarz Method Type Theory for Lions's Algorithm and a Symmetrized Optimized Restricted Additive Schwarz Method." SIAM Journal on Scientific Computing 39, no. 4 (January 2017): A1345—A1365. http://dx.doi.org/10.1137/16m1060066.

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Prayogi, Satria Yudha. "SIMPLE ADDITIVE WEIGHTING APPLICATION METHOD OF TABLET PC SELECTION FOR BEGINNERS." Computer Engineering, Science and System Journal 1, no. 1 (January 31, 2016): 35–40. http://dx.doi.org/10.24114/cess.v1i1.4034.

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Fujita, Masatoshi, and Ryojiro Tominaga. "Electronics Device Printer Applying Additive Manufacturing Method." Journal of The Japan Institute of Electronics Packaging 23, no. 6 (September 1, 2020): 476–81. http://dx.doi.org/10.5104/jiep.23.476.

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Dissertations / Theses on the topic "ADDITIVE METHOD"

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Hoffman, John W. "Some Problems in Additive Number Theory." Kent State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=kent1408298984.

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Kodira, Ganapathy D. "Investigation of an Investment Casting Method Combined with Additive Manufacturing Methods for Manufacturing Lattice Structures." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc283786/.

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Cellular metals exhibit combinations of mechanical, thermal and acoustic properties that provide opportunities for various implementations and applications; light weight aerospace and automobile structures, impact and noise absorption, heat dissipation, and heat exchange. Engineered cell topologies enable one to control mechanical, thermal, and acoustic properties of the gross cell structures. A possible way to manufacture complex 3D metallic cellular solids for mass production with a relatively low cost, the investment casting (IC) method may be used by combining the rapid prototyping (RP) of wax or injection molding. In spite of its potential to produce mass products of various 3D cellular metals, the method is known to have significant casting porosity as a consequence of the complex cellular topology which makes continuous fluid's access to the solidification interface difficult. The effects of temperature on the viscosity of the fluids were studied. A comparative cost analysis between AM-IC and additive manufacturing methods is carried out. In order to manufacture 3D cellular metals with various topologies for multi-functional applications, the casting porosity should be resolved. In this study, the relations between casting porosity and processing conditions of molten metals while interconnecting with complex cellular geometries are investigated. Temperature, and pressure conditions on the rapid prototyping – investment casting (RP-IC) method are reported, thermal stresses induced are also studied. The manufactured samples are compared with those made by additive manufacturing methods.

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Rawson, Paul Stansfield Christy-Anne. "Field method for detection of metal deactivator additive in jet fuel." Fishermans Bend, Victoria : Defence Science and Technology Organisation, 2009. http://nla.gov.au/nla.arc-24592.

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Akcin, Haci Mustafa. "Direct adjustment method on Aalen's additive hazards model for competing risks data." unrestricted, 2008. http://etd.gsu.edu/theses/available/etd-04182008-095207/.

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Thesis (M.S.)--Georgia State University, 2008.
Title from file title page. Xu Zhang, committee chair; Yichuan Zhao, Jiawei Liu, Yu-Sheng Hsu, committee members. Electronic text (51 p.) : digital, PDF file. Description based on contents viewed July 15, 2008. Includes bibliographical references (p. 50-51).

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Carlsson, Rebecca. "Comparison of turning blades produced by a conventional- and additive manufacturing method." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-69032.

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Additive manufacturing has developed radical through the years. Sandvik has invested in the area by building a center specific for additive manufacturing. Due to problems with the material- and product properties and high production costs no products have been used with additive manufacturing method. These aspects have improved over the years and therefore the master thesis was made with an objective: to compare two different produced blades with focus on the aspects of material- and product properties and production costs. One of the blades was produced through additive manufacturing (AM) and the other blade was produced in today’s production at Sandvik Coromant in Gimo. If the blade can be produced through AM there is a possibility to lower the production costs and improve the degree of design freedom. The material that will be used is SS2230 (50CrV4) which are used in conventionally produced blades and 1.2709 which are used in AM produced blades. The investigation consisted of five different tests (flow rate, pressure force, vibration, fatigue and keyhole wear) and a study on production aspects with focus on value stream mapping, investments and production costs. The main objective in the result was to compare each test between the two different produced blades, not to investigate the optimal value. Therefore, was the test designed to have continuity with as small deviation as possible between the tests. This resulted in choosing values which were not optimal for the blades but focused on continuity and deviation. The coolant channels flow rate improved with 35% on the AM produced blades but pressure force, fatigue and keyhole wear resistance did not deviate much from conventionally produced blades. Fatigue tests were made twice with two different inserts because the result from the first test differentiated too much from the expected results on both blades. Production costs will be higher with AM but on a long-term may an investment improve the degree of design freedom on a product and a possibility to produce towards costumer (just in time). This will need an expensive investment with a bigger perspective on the timeframe. The value of the product may increase but the production costs will increase too.

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Fan, Zongyue. "A Lagrangian Meshfree Simulation Framework for Additive Manufacturing of Metals." Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1619737226226133.

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Iqbal, Shaheer. "Characterization of Viscoelastic Properties of a Material Used for an Additive Manufacturing Method." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc407787/.

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Recent development of additive manufacturing technologies has led to lack of information on the base materials being used. A need arises to know the mechanical behaviors of these base materials so that it can be linked with macroscopic mechanical behaviors of 3D network structures manufactured from the 3D printer. The main objectives of my research are to characterize properties of a material for an additive manufacturing method (commonly referred to as 3D printing). Also, to model viscoelastic properties of Procast material that is obtained from 3D printer. For this purpose, a 3D CAD model is made using ProE and 3D printed using Projet HD3500. Series of uniaxial tensile tests, creep tests, and dynamic mechanical analysis are carried out to obtained viscoelastic behavior of Procast. Test data is fitted using various linear and nonlinear viscoelastic models. Validation of model is also carried out using tensile test data and frequency sweep data. Various other mechanical characterization have also been carried out in order to find density, melting temperature, glass transition temperature, and strain rate dependent elastic modulus of Procast material. It can be concluded that melting temperature of Procast material is around 337°C, the elastic modulus is around 0.7-0.8 GPa, and yield stress is around 16-19 MPa.

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Brennan-Craddock, James. "The investigation of a method to generate conformal lattice structures for additive manufacturing." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/9146.

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Additive manufacturing (AM) allows a geometric complexity in products not seen in conventional manufacturing. This geometric freedom facilitates the design and fabrication of conformal hierarchical structures. Entire parts or regions of a part can be populated with lattice structure, designed to exhibit properties that differ from the solid material used in fabrication. Current computer aided design (CAD) software used to design products is not suitable for the generation of lattice structure models. Although conceptually simple, the memory requirements to store a virtual CAD model of a lattice structure are prohibitively high. Conventional CAD software defines geometry through boundary representation (B-rep); shapes are described by the connectivity of faces, edges and vertices. While useful for representing accurate models of complex shape, the sheer quantity of individual surfaces required to represent each of the relatively simple individual struts that comprise a lattice structure ensure that memory limitations are soon reached. Additionally, the conventional data flow from CAD to manufactured part is arduous, involving several conversions between file formats. As well as a lengthy process, each conversion risks the generation of geometric errors that must be fixed before manufacture. A method was developed to specifically generate large arrays of lattice structures, based on a general voxel modelling method identified in the literature review. The method is much less sensitive to geometric complexity than conventional methods and thus facilitates the design of considerably more complex structures. The ability to grade structure designs across regions of a part (termed functional grading ) was also investigated, as well as a method to retain connectivity between boundary struts of a conformal structure. In addition, the method streamlines the data flow from design to manufacture: earlier steps of the data conversion process are bypassed entirely. The effect of the modelling method on surface roughness of parts produced was investigated, as voxel models define boundaries with discrete, stepped blocks. It was concluded that the effect of this stepping on surface roughness was minimal. This thesis concludes with suggestions for further work to improve the efficiency, capability and usability of the conformal structure method developed in this work.

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Yim, Sungshik. "A Retrieval Method (DFM Framework) for Automated Retrieval of Design for Additive Manufacturing Problems." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14553.

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Problem: The process planning task for a given design problem in additive manufacturing can be greatly enhanced by referencing previously developed process plans. However, identifying appropriate process plans for the given design problem requires appropriate mapping between the design domain and the process planning domain. Hence, the objective of this research is to establish mathematical mapping between the design domain and the process planning domain such that the previously developed appropriate process plans can be identified for the given design task. Further more, identification of an appropriate mathematical theory that enables computational mapping between the two domains is of interest. Through such computational mapping, previously developed process plans are expected to be shared in a distributed environment using an open repository. Approach: The design requirements and process plans are discretized using empirical models that compute exact values of process variables for the given design requirements. Through this discretization, subsumption relations among the discretized design requirements and process plans are identified. Appropriate process plans for a given design requirement are identified by subsumption relations in the design requirements. Also, the design requirements that can be satisfied by the given process plans are identified by subsumption relations among the process plans. To computationally realize such mapping, a description logic (ALE) is identified and justified to represent and compute subsumption relation. Based on this investigation, a retrieval method (DFM framework) is realized that enables storage and retrieval of process plans. Validation: Theoretical and empirical validations are performed using the validation square method. For the theoretical validation, an appropriate description logic (ALE) is identified and justified. Also, subsumption utilization in mapping two domains and realizing the DFM framework is justified. For the empirical validation, the storing and retrieval performance of the DFM framework is tested to demonstrate its theoretical validity. Contribution: In this research, two areas of contributions are identified: DFM and engineering information management. In DFM, the retrieval method that relates the design problem to appropriate process plans through mathematical mapping between design and process planning domain is the major contribution. In engineering information management, the major contributions are the development of information models and the identification of their characteristics. Based on this investigation, an appropriate description logic (ALE) is selected and justified. Also, corresponding computational feasibility (non deterministic polynomial time) of subsumption is identified.

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Yim, Sungshik. "A retrieval method (DF FRAMEWORK) for automated retrieval of design for additive manufacturing problems." Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-03012007-113030/.

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Thesis (Ph. D.)--Mechanical Engineering, Georgia Institute of Technology, 2007.
Nelson Baker, Committee Member ; Charles Eastman, Committee Member ; Christiaan Paredis, Committee Member ; Janet Allen, Committee Member ; David Rosen, Committee Chair.

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Books on the topic "ADDITIVE METHOD"

1

Dryja, Maksymilian. On the optimality of an additive iterative refinement method. New York: Courant Institute of Mathematical Sciences, New York University, 1989.

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Dryja, Maksymilian. On the optimality of an additive iterative refinement method. New York: Courant Institute of Mathematical Sciences, New York University, 1989.

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Toliver, Ralph Haeger. Bounds for solutions of two additive equations of odd degree. Warszawa: Państwowe Wydawn. Nauk., 1989.

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Dryja, Maksymilian. An additive variant of the Schwarz alternating method for the case of many subregions. New York: Courant Institute of Mathematical Sciences, New York University, 1987.

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Dryja, Maksymilian. An additive variant of the Schwarz alternating method for the case of many subregions. New York: Courant Institute of Mathematical Sciences, New York University, 1987.

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Sin, Ho-chʻŏl. Chʻuk-susan sikpʻum chung sayong kŭmji mit sayong hŏga tongmulyong ŭiyakpʻum sihŏmpŏp kaesŏn mit challyu siltʻae chosa =: Residue monitoring and analytical method development of veterinary drugs permitted and not-permitted to use in food producing animals and fishes. [Seoul]: Sikpʻum Ŭiyakpʻum Anjŏnchʻŏng, 2007.

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Zhang, Xuejun. Multilevel additive Schwarz methods. New York: Courant Institute of Mathematical Sciences, New York University, 1991.

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Dryja, Maksymilian. Multilevel additive methods for elliptic finite element problems. New York: Courant Institute of Mathematical Sciences, New York University, 1990.

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Methods of analysis of food components and additives. 2nd ed. Boca Raton: Taylor & Francis, 2012.

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Hummel, Dieter O. Atlas of Plastics Additives: Analysis by Spectrometric Methods. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002.

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Book chapters on the topic "ADDITIVE METHOD"

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Schmidt, Klaus D., and Mathias Zocher. "Additive Method." In EAA Series, 1–8. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30056-6_1.

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Shinoda, Kentaro, and Jun Akedo. "Aerosol Deposition Method." In Multi-dimensional Additive Manufacturing, 107–27. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-7910-3_8.

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Grynkiewicz, David J. "The Polynomial Method: The Erdős-Heilbronn Conjecture." In Structural Additive Theory, 401–14. Heidelberg: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00416-7_22.

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Grynkiewicz, David J. "The Isoperimetric Method: Sidon Sets and r-Critical Pairs II." In Structural Additive Theory, 367–400. Heidelberg: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00416-7_21.

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Brunone, Federica, Marco Cucuzza, Marco Imperadori, and Andrea Vanossi. "An Innovative Method for the Management of the Building Process." In Wood Additive Technologies, 35–64. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-78136-1_3.

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Hamidoune, Yahya O. "The isoperimetric method." In Combinatorial Number Theory and Additive Group Theory, 241–52. Basel: Birkhäuser Basel, 2009. http://dx.doi.org/10.1007/978-3-7643-8962-8_18.

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Károlyi, Gyula. "The polynomial method in additive combinatorics." In Combinatorial Number Theory and Additive Group Theory, 267–77. Basel: Birkhäuser Basel, 2009. http://dx.doi.org/10.1007/978-3-7643-8962-8_20.

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Mróz, Monika. "Additive Schwarz method with strip substructures." In Modelling and Optimization of Distributed Parameter Systems Applications to engineering, 306–12. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-0-387-34922-0_32.

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Thakkar, Jitesh J. "Additive Ratio Assessment Method (ARM/ARAS)." In Multi-Criteria Decision Making, 239–52. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4745-8_14.

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Brunone, Federica, Marco Cucuzza, Marco Imperadori, and Andrea Vanossi. "A Validation Opportunity: Case-Studies Analysis and Outcomes on the Application of the Method on Real Buildings." In Wood Additive Technologies, 65–79. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-78136-1_4.

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Conference papers on the topic "ADDITIVE METHOD"

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Blacodon, Daniel. "Spectral Estimation Method with Additive Noise." In 15th AIAA/CEAS Aeroacoustics Conference (30th AIAA Aeroacoustics Conference). Reston, Virigina: American Institute of Aeronautics and Astronautics, 2009. http://dx.doi.org/10.2514/6.2009-3125.

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Vaezi, Mohammad, Zularifin Sejo, Victor Humphrey, and Shoufeng Yang. "Feasibility Study of Printing Acoustic Metamaterials Using Extrsuion Freeforming Method." In 1st International Conference on Progress in Additive Manufacturing. Singapore: Research Publishing Services, 2014. http://dx.doi.org/10.3850/978-981-09-0446-3_089.

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Sulej, Wojciech, and Krzysztof Murawski. "Application of 3D printed models to visual measurement in the new innovative depth from defocus method." In 3D Printed Optics and Additive Photonic Manufacturing, edited by Georg von Freymann, Alois M. Herkommer, and Manuel Flury. SPIE, 2018. http://dx.doi.org/10.1117/12.2306955.

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Mikhalev, P. A., A. S. Filimonov, and A. N. Korolev. "Experimental study of gas permeability of polyamide 12 additive laser sintering additive method details." In XLIII ACADEMIC SPACE CONFERENCE: dedicated to the memory of academician S.P. Korolev and other outstanding Russian scientists – Pioneers of space exploration. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5133324.

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Hu, Bingbing, Guoqing Jin, and Lining Sun. "A Novel Adaptive Slicing Method for Additive Manufacturing." In 2018 IEEE 22nd International Conference on Computer Supported Cooperative Work in Design (CSCWD). IEEE, 2018. http://dx.doi.org/10.1109/cscwd.2018.8465247.

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Chichyang Chen, Rui-Lin Chen, and Ming-Hwa Sheu. "A fast additive normalization method for exponential computation." In Proceedings. Euromicro Symposium on Digital System Design. IEEE, 2003. http://dx.doi.org/10.1109/dsd.2003.1231955.

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Gu, Xizhi, ZhiMin Hou, Jing Xu, Ken Chen, and Guanglie Zhang. "A Novel Additive Manufacturing Method for Spiral Parts." In 2017 IEEE 7th Annual International Conference on CYBER Technology in Automation, Control, and Intelligent Systems (CYBER). IEEE, 2017. http://dx.doi.org/10.1109/cyber.2017.8446338.

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Chen, Musheng. "A novel fusion method with additive wavelet decomposition." In International Symposium on Photoelectronic Detection and Imaging: Technology and Applications 2007, edited by Liwei Zhou. SPIE, 2007. http://dx.doi.org/10.1117/12.791403.

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Castelli, Kevin, Ahmed Magdy Ahmed Zaki, Anikethan Yenjalagere Balakrishnappa, Marco Carnevale, and Hermes Giberti. "A path planning method for robotic Additive Manufacturing." In 2021 3rd International Congress on Human-Computer Interaction, Optimization and Robotic Applications (HORA). IEEE, 2021. http://dx.doi.org/10.1109/hora52670.2021.9461380.

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Chandler, Kathy, Michael Tinker, Kathy Chandler, and Michael Tinker. "A general mass-additive method for component mode synthesis." In 38th Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1997. http://dx.doi.org/10.2514/6.1997-1381.

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Reports on the topic "ADDITIVE METHOD"

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Herbold, E. B., O. Walton, and M. A. Homel. Simulation of Powder Layer Deposition in Additive Manufacturing Processes Using the Discrete Element Method. Office of Scientific and Technical Information (OSTI), October 2015. http://dx.doi.org/10.2172/1239200.

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Hayes, R. B., E. H. Haskell, and G. H. Kenner. A mathematical approach to optimal selection of dose values in the additive dose method of ERP dosimetry. Office of Scientific and Technical Information (OSTI), January 1996. http://dx.doi.org/10.2172/483344.

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Shenouda, S., and A. Hoff. Discrete Element Method Analysis for Metal Powders Used in Additive Manufacturing, and DEM Simulation Tutorial Using LIGGGHTS-PUBLIC. Office of Scientific and Technical Information (OSTI), August 2020. http://dx.doi.org/10.2172/1656962.

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Compel, W. S., and J. P. Lewicki. Advanced Methods for Direct Ink Write Additive Manufacturing. Office of Scientific and Technical Information (OSTI), January 2018. http://dx.doi.org/10.2172/1418958.

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Hoover, Donald R. Subset Complement Addition Upper Bounds - An Improved Inclusion/ Exclusion Method. Fort Belvoir, VA: Defense Technical Information Center, April 1989. http://dx.doi.org/10.21236/ada208797.

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Stromer, Bobbi, Rebecca Crouch, Katrinka Wayne, Ashley Kimble, Jared Smith, and Anthony Bednar. Methods for simultaneous determination of 29 legacy and insensitive munition (IM) constituents in aqueous, soil-sediment, and tissue matrices by high-performance liquid chromatography (HPLC). Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/1168142105.

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Standard methods are in place for analysis of 17 legacy munitions compounds and one surrogate in water and soil matrices; however, several insensitive munition (IM) and degradation products are not part of these analytical procedures. This lack could lead to inaccurate determinations of munitions in environmental samples by either not measuring for IM compounds or using methods not designed for IM and other legacy compounds. This work seeks to continue expanding the list of target analytes currently included in the US Environmental Protection Agency (EPA) Method 8330B. This technical report presents three methods capable of detecting 29 legacy, IM, and degradation products in a single High Performance Liquid Chromatography (HPLC) method with either ultraviolet (UV)-visible absorbance detection or mass spectrometric detection. Procedures were developed from previously published works and include the addition of hexahydro-1-nitroso-3,5-dinitro-1,3,5-triazine (MNX); hexahydro-1,3-dinitroso-5-nitro-1,3,5-triazine (DNX); hexahydro-1,3,5-trinitroso-1,3,5-triazine (TNX); 2,4-diamino-6-nitrotoluene (2,4-DANT); and 2,6-diamino-4-nitrotoluene (2,6-DANT). One primary analytical method and two secondary (confirmation) methods were developed capable of detecting 29 analytes and two surrogates. Methods for high water concentrations (direct injection), low-level water concentrations (solid phase extraction), soil (solvent extraction), and tissue (solvent extraction) were tested for analyte recovery of the new compounds.

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Kennedy, Alan, Mark Ballentine, Andrew McQueen, Christopher Griggs, Arit Das, and Michael Bortner. Environmental applications of 3D printing polymer composites for dredging operations. Engineer Research and Development Center (U.S.), January 2021. http://dx.doi.org/10.21079/11681/39341.

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This Dredging Operations Environmental Research (DOER) technical note disseminates novel methods to monitor and reduce contaminant mobility and bioavailability in water, sediments, and soils. These method advancements are enabled by additive manufacturing (i.e., three-dimensional [3D] printing) to deploy and retrieve materials that adsorb contaminants that are traditionally applied as unbound powders. Examples of sorbents added as amendments for remediation of contaminated sediments include activated carbon, biochar, biopolymers, zeolite, and sand caps. Figure 1 provides examples of sorbent and photocatalytic particles successfully compounded and 3D printed using polylactic acid as a binder. Additional adsorptive materials may be applicable and photocatalytic materials (Friedmann et al. 2019) may be applied to degrade contaminants of concern into less hazardous forms. This technical note further describes opportunities for U.S. Army Corps of Engineers (USACE) project managers and the water and sediment resource management community to apply 3D printing of polymers containing adsorptive filler materials as a prototyping tool and as an on-site, on-demand manufacturing capability to remediate and monitor contaminants in the environment. This research was funded by DOER project 19-13, titled “3D Printed Design for Remediation and Monitoring of Dredged Material.”

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Singhvi, Punit, Javier García Mainieri, Hasan Ozer, and Brajendra Sharma. Rheology-Chemical Based Procedure to Evaluate Additives/Modifiers Used in Asphalt Binders for Performance Enhancements: Phase 2. Illinois Center for Transportation, June 2021. http://dx.doi.org/10.36501/0197-9191/21-020.

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Abstract:

The increased use of softer binders in Illinois over the past decade is primarily attributed to the increased use of recycled materials in asphalt pavement construction. The shift in demand of using PG 58-28 over PG 64-22 has resulted in potential alternative methods to produce softer binders more economically using proprietary products. However, there are challenges in using these proprietary products for asphalt modification because of uncertainty in their long-term performance and significant variability in binder chemistry. The current SuperPave performance grading specification for asphalt binders is insufficient in differentiating binders produced from these modifiers. Therefore, the objective of this study is to evaluate the performance of various softener-type asphalt binder modifiers using a wide array of rheological and chemistry tests for their integration into the Illinois Department of Transportation’s material specifications. The small-strain rheological tests and their parameters allowed for consistent grouping of modified binders and can be used as surrogates to identify performing and nonperforming asphalt binders. A new parameter, Δ|G*|peak τ, was developed from the linear amplitude sweep test and showed potential to discriminate binders based on their large-strain behavior. Chemistry-based parameters were shown to track aging and formulation changes. The modifier sources were identified using fingerprint testing and were manifested in the modified binder chemical and compositional characteristics. The two sources of base binders blended with the modifiers governed the aging rate of the modified binders. Mixture performance testing using the Illinois Flexibility Index Test and the Hamburg Wheel-Track Test were consistent with the rheological and chemical findings, except for the glycol amine-based modified binder, which showed the worst cracking performance with the lowest flexibility index among the studied modifiers. This was contrary to its superior rheological performance, which may be attributed to lower thermal stability, resulting in high mass loss during mixing. According to the characterization of field-aged binders, laboratory aging of two pressurized aging vessel cycles or more may represent realistic field aging of 10 to 15 years at the pavement surface and is able to distinguish modified binders. Therefore, an extended aging method of two pressurized aging vessel cycles was recommended for modified binders. Two different testing suites were recommended for product approval protocol with preliminary thresholds for acceptable performance validated with field-aged data.

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Olson, Edwin S. Task 2.0 - Air Quality Assessment, Control, and Analytical Methods Subtask 2.11 - Lactic Acid FGD Additives From Sugar Beet Wastewater. Office of Scientific and Technical Information (OSTI), February 1998. http://dx.doi.org/10.2172/1690.

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Haber, Lynne, Anthony Bednar, Alan Kennedy, Mark Ballentine, and Richard Canady. Methods evaluation for assessing release of manufactured nanomaterials from polymers, consistent with the NanoGRID framework : Advanced and Additive Materials : Sustainability for Army Acquisitions. Engineer Research and Development Center (U.S.), August 2019. http://dx.doi.org/10.21079/11681/33704.

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