Low velocity impact of thermosetting composite systems modified with rubber and cork powders

• Type: Article in International Scientific Journal
• Date: 2005

Authors

Landolt, JH (Author) Other; Magalhaes, PH (Author) Other; Novoa, PR (Author) Other; Viana, J (Author) Other; António Torres Marques (Author) FEUP

Journal

Title: Science and Engineering of Composite Materials

Vol. 12

Pages: 103-107

ISSN: 0334-181X

Publisher: Walter De Gruyter

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 1 Citation

Scientific classification

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-000-6QN

Abstract (EN): The increasing use of composite materials in technology applications over classic metallic materials, in particular where high specific mechanical properties are considered valuable, has drawn composite related research efforts towards sensitive features of composite materials, such as low-velocity impact phenomena. This paper describes a first attempt to enhance the toughness of carbon fibre/epoxy quasi-isotropic laminates, when subjected to low-velocity impact. The work consisted in introducing, cork powder or Kraton (TM) rubber particle layers between specific laminate plies, to take advantage of the well known elastic properties and shock absorbing capacities of cork and rubber. The outer layers structure was also investigated considering the case of two unidirectional plies in a [0 degrees, 90 degrees] configuration, or single twill woven fabric ply. The impact resistance was evaluated by measuring the indentation depth after drop-weight low velocity impact tests. The all-unidirectional ply based laminate compositions give consistently better results. In general, interleaved powders had a positive contribution. In the sense of evaluating the influence of the toughening mechanisms in other properties, results of tensile tests and DMTA are also be discussed. Analyzing the experimental results it is possible to say that interleaving seems to lead to encouraging results on the topic of CFRP laminates toughening.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5