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个人简介
Greg started out as a poor naïve clam digger on the Down East coast of Maine and graduated from Blue Hill George Stevens Academy in 1960. Then he attended the University of Maine at Orono for a little less than 8 years while completing the work for his B.S., M.S., and PhD. in Chemical Engineering. During his 50-year career at General Motors, Mobile Chemical, Clarkson University, and now as a consultant, he has focused on gaining a fundamental understanding of problems that were industrially important. In many of these problems, new fundamental understanding of the process or problem must be developed.
In 2019 he initiated a project to test Mark Wetzel’s new molecular bond theory for dispersion of fillers in polymer matrix fluids. The group grew to involve 11 international investigators and led to a new 2.5 D model for twin-screw extruders. The model was extended to determine how fundamental fiber and particle bonds, using Hamaker interactions, control the dispersing of inorganic particles and glass or carbon fibers in both polar and non-polymer materials. Four papers documenting the initial theory were written and submitted to the 2022 SPE ANTEC. The experiments and analysis should be completed by 2024. As part of this twin-screw effort, he and Mark Wetzel will have a paper published in 2022 on “Modeling the Thermodynamics and Kinematics of Spherical Particle Dispersion in Polymer Melts: Model Derivation and Simulation Analysis.” He co-authored publications in 2021-2022 focused on fundamental investigation of residence time and chaotic mixing in a free helix single screw extruder. Another body of work published between 2016 and 2020 redefined the so-called power law viscosity for particulate filled materials and showed that the cause of the viscous power law response was due to fractions of the flowing material having volumes that did not dissipate energy. Previously, he published extensively on polyurethane foam and elastomers, electrodeposition of automotive paints, blown film, injection molding, and single screw extrusion, solids conveying, melting, and metering. He and his graduate students developed the screw rotation theory model for single screw extruders that retains the physics of the rotating screw and for the first time accurately predicts the viscous dissipation temperature rise in single screw extruders. He was elected Chairman of the Gordon Research Conference, Cellular Materials 1980. He currently has 69 peer reviewed journal papers and 96 other peer reviewed papers. He has presented more than 240 technical presentations, many invited both domestic and international. He has co-authored or contributed to about a dozen books.
He has been active as an administrator serving the Clarkson University community as Chemical Engineering Department Chair, University Chief Information Officer, and Dean of Engineering, retiring in 2008. He also served in the early 1990s: on the Executive Committee and as Treasurer of International Polymer Processing Society, 1998- 2022 Editorial Advisory Board - Progress in Polymer Processing, and Plastic Sheet and Film. He served for 14 years on the Board of Directors Extrusion Division, Society of Plastics Engineers, and as part of his duties served as SPE Extrusion Division Councilor, Executive Committee International Society Plastics Engineers, Treasurer International Society Plastics Engineers. He has been active in community service, serving as President of both the Potsdam, NY and Machias Maine Rotary Clubs, District Governor Rotary International District 7040, and Board Member Down East Community Hospital.
研究兴趣
论文共 136 篇作者统计合作学者相似作者
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SPE transactions/Polymer engineering and science (2023)
SPE transactions/Polymer engineering and scienceno. 5 (2023): 1528-1538
Extruder Processingpp.177-214, (2022)
Extruder Processingpp.17-44, (2022)
Extruder Processingpp.127-175, (2022)
Extruder Processingpp.45-69, (2022)
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作者统计
#Papers: 135
#Citation: 2060
H-Index: 25
G-Index: 39
Sociability: 5
Diversity: 2
Activity: 3
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