CorkSTFlfluidics - A novel concept for the development of eco-friendly light-weight energy absorbing composites

• Type: Article in International Scientific Journal
• Date: 2015

Authors

F. J. Galindo-Rosales (Author) FEUP; S. Martínez-Aranda (Author) FEUP; L. Campo-Deaño (Author) FEUP

Journal

Title: MATERIALS & DESIGN

Vol. 82

Pages: 326-334

ISSN: 0261-3069

Publisher: Elsevier Science

Indexing

Scopus

Associated Projects

EXPL/EMS-TRA/2306/2013 - Optimização da morfologia dos swimming-microbots para aplicações biomédicas

Other information

DOI: 10.1016/jmatdes.2014.12.025

Abstract (EN): CorkSTFlfluidics are environmentally friendly composites consisting of a laminar sheet of compacted micro-agglomerated cork engraved with a network of microchannels by laser and filled with a concentrated aqueous solution of cornstarch (shear thickening fluid). Thus the mechanical properties of these composites will result from the combination of the mechanical properties of the micro-agglomerated of cork and the enhanced shear thickening response of the STF flowing through the network of microchannels. In this work we have performed low velocity impact tests using a drop weight testing machine in order to asses the improvement of these composites with regards to the micro-agglomerated of cork alone. A numerical analysis was also performed and allowed to understand how shear thickening behavior is triggered by the appropriate combination microchannels’ size and the inlet velocity. Thus, for the 60P/40S/M sample, the peak force was larger than the one given by the cork sheets without engraved microchannel nor STF.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9