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Volume 19, Issue 3, 2010
LETTER: ENVIRONMENTAL EFFECTS ON COMPRESSIVE STRENGTH AFTER IMPACT LOADS IN COMPOSITE LAMINATES
Amaro A.M.1 and Reis P.N.B.2
1 CEMUC; Department of Mechanical Engineering, University of Coimbra, Pinhal de Marrocos, 3030 Coimbra, Portugal
2 Department of Electromechanical Engineering, University of Beira Interior - UBI,
6200 Covilhã, Portugal
Received 19 May 2010; accepted 8 June 2010
ABSTRACT
The aim of this work is to study the influence of short time water exposition (until 100 h) and temperature in compressive strength of carbon-fibre-reinforced epoxy laminates, before and after low velocity impacts. Specimens were immersed in water at room temperature during 50 h or 100 h, while others were subjected to 80ºC during 12 hours, followed by cool down to room temperature. The laminates were manufactured with sixteen unidirectional carbon layers and two stacking sequences [0,90,0,90]2s and [0,90]8. Results show that the temperature influences the compressive strength while the time water exposure studied does not present a significant influence.
KEYWORDS:pultrusion
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