The Evaluation of Sandwich Composite Materials with Vegetable Fibers in a Castor Oil Polyurethane Matrix with Their Faces and Honeycomb Core Made in a 3D Printer

Gilberto García del Pino, Abderrezak Bezazi, AC Kieling, José Costa de Macêdo Neto, Sofia Dehaini Garcia, José Luis Valín Rivera, Meylí Valin Fernández, Aristides Rivera Torres, Francisco Rolando Valenzuela Díaz