Drilling delamination outcomes on glass and sisal reinforced plastics

• Type: Article in International Conference Proceedings Book
• Date: 2013

Authors

L. M. Durão (Author) Other; Daniel J. S. Gonçalves (Author) Other; João Manuel R. S. Tavares (Author) FEUP; Victor H. C. de Albuquerque (Author) Other; Túlio H Panzera (Author) Other; Leandro J. Silva (Author) Other; A. A. Vieira (Author) Other; A. M. Baptista (Author) FEUP

Conference proceedings International

Title: ADVANCED MATERIALS FORUM VI, PTS 1 AND 2

Pages: 301-306

6th International Materials Symposium (MATERIALS 2011)/15th Meeting of SPM

Guimaraes, PORTUGAL, APR 18-20, 2011

Indexing

ISI Web of Knowledge - 8 Citations

Scopus - 15 Citations

INSPEC

Scientific classification

FOS: Engineering and technology > Materials engineering

CORDIS: Technological sciences > Technology > Computer technology > Image processing

Other information

Authenticus ID: P-005-3N6

DOI: 10.4028/www.scientific.net/msf.730-732.301

Abstract (EN): Nowadays, fibre reinforced plastics are used in a wide variety of applications. Apart from the most known reinforcement fibres, like glass or carbon, natural fibres can be seen as an economical alternative. However, some mistrust is yet limiting the use of such materials, being one of the main reasons the inconsistency normally found in their mechanical properties. It should be noticed that these materials are more used for their low density than for their high stiffness. In this work, two different types of reinforced plates were compared: glass reinforced epoxy plate and sisal reinforced epoxy plate. For material characterization purposes, tensile and flexural tests were carried out. Main properties of both materials, like elastic modulus, tensile strength or flexural modulus, are presented and compared with reference values. Afterwards, plates were drilled under two different feed rates: low and high, with two diverse tools: twist and brad type drill, while cutting speed was kept constant. Thrust forces during drilling were monitored. Then, delamination area around the hole was assessed by using digital images that were processed using a computational platform previously developed. Finally, drilled plates were mechanically tested for bearing and open-hole resistance. Results were compared and correlated with the measured delamination. Conclusions contribute to the understanding of natural fibres reinforced plastics as a substitute to glass fibres reinforced plastics, helping on cost reductions without compromising reliability, as well as the consequence of delamination on mechanical resistance of this type of composites.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6