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Brent Barbee on Muck Rack

Brent Barbee

As seen in: Nature, MoldMaking Technology Magazine, Plastics Technology México
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Articles

Momentum Transfer from the DART Mission Kinetic Impact on Asteroid Dimorphos - Nature

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By Andrew Cheng, Brent Barbee, Tony L. Farnham, Sabina D. Raducan, Derek Richardson, Shantanu Naidu, Masatoshi Hirabayashi, Jian-Yang Li, Siegfried Eggl, Nancy Chabot, Sidney Chocron, Gareth Collins, R. Terik Daly, Thomas Davison, Mallory E. DeCoster, Fabio Ferrari, Kathryn M. Kumamoto, Patrick Michel, Ryota Nakano, Eric Palmer, Andrew Rivkin, Daniel J. Scheeres, Josep M. Trigo-Rodríguez, James Walker, Kai Wünnemann, Yun Zhang, Gabriele Cremonese, Simone Ieva, Gabriele Impresario, Alice Lucchetti, Maurizio Pajola, Davide Perna, Giovanni Poggiali, Alessandro Rossi, Paolo Tortora, Marco Zannoni, Harrison F. Agrusa, Thomas S. Statler, Steven Chesley, Olivier S. Barnouin, Dawn M. Graninger, Robert Luther, Joshua R. Lyzhoft, Ivano Bertini, Seth Jacobson
| Nature Verified
Abstract The NASA Double Asteroid Redirection Test (DART) mission performed a kinetic impact on asteroid Dimorphos, the satellite of the binary asteroid (65803) Didymos, at 23:14 UTC on September 26, 2022 as a planetary defense test1. DART was the first hypervelocity impact experiment on an asteroid at size and velocity scales relevant to planetary defense, intended to validate kinetic impact as a means of asteroid deflection.
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Estrategias para reducir la adherencia en moldes de inyección

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By Brent Barbee
| Plastics Technology México Verified
Esta ilustración muestra el ángulo de contacto de una gota de agua en una superficie. Cuanto mayor sea el ángulo entre la gota de agua y una superficie, menor será la energía superficial de esa superficie. Un ángulo de contacto superior a 90 grados significa que una superficie es hidrofóbica, mientras que un ángulo igual o inferior a 90 grados se considera hidrofílica. Se usa un tensiómetro para analizar esta propiedad. Cifras cedidas por United Protective Technologies (UPT).
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Cómo resolver el desafío de la adherencia de las piezas al molde

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By Brent Barbee
| Plastics Technology México Verified
El desgaste del molde y la adherencia de las piezas al molde implican una batalla constante y una pérdida potencial de ganancias cuando se trata de polímeros agresivos. En muchos casos, los masterbatch (una mezcla concentrada de aditivos) formulados para el desmoldeo, se pueden mezclar en ciertas resinas para facilitar el desmoldeo de piezas, pero con materiales que tienen relleno de fibras de vidrio, el desgaste sigue siendo un problema importante.
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