Mechanical Performance of Carbon/Epoxy Composites with Embedded Polymeric Films

2007 ◽  
Vol 334-335 ◽  
pp. 469-472 ◽  
Author(s):  
Ben Qi ◽  
Michael Bannister
Keyword(s):  
Composite Laminates ◽  
Mechanical Performance ◽  
Polymeric Films ◽  
Epoxy Composites ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Lap Shear ◽  
Short Beam ◽  
Monitoring Applications ◽  
Beam Shear

This paper presents experimental results on the mechanical performance of advanced carbon/epoxy composites with embedded polymeric films. The composite laminates with polymeric films, which are potentially used as a sensor/actuator carrier for structural health monitoring applications, were investigated under various mechanical loadings including low velocity impact, single lap shear and short beam shear. The preliminary work showed that embedment of those polymeric films does not degrade, but could significantly improve, the mechanical properties of the composite laminates.

A study of short-beam-shear and double-lap-shear specimens of glass fabric/epoxy composites

2002 ◽  
Vol 33 (2) ◽  
pp. 125-132 ◽  
Author(s):  
D.H. Pahr ◽  
F.G. Rammerstorfer ◽  
P. Rosenkranz ◽  
K. Humer ◽  
H.W. Weber
Keyword(s):  
Epoxy Composites ◽  
Glass Fabric ◽  
Lap Shear ◽  
Short Beam ◽  
Beam Shear

Effect of Electrospun Fibers on the Interlaminar Properties of Woven Composites

2008 ◽  
Vol 47-50 ◽  
pp. 1031-1034 ◽  
Author(s):  
Ajit D. Kelkar ◽  
Ram Mohan ◽  
Ronnie Bolick ◽  
Sachin Shendokar
Keyword(s):  
Composite Laminates ◽  
Hybrid Composites ◽  
Electrospun Fiber ◽  
Low Velocity Impact ◽  
Woven Composites ◽  
Shear Tests ◽  
Fiber Glass ◽  
Electrospinning Technique ◽  
Short Beam ◽  
Beam Shear

Failure by delamination of composite laminates due to low velocity impact damages is critical because of the subsurface nature of delamination. Traditional methods such as stitching and Zpinning, while improving interlaminar properties in woven composites, lead to a reduction of the inplane properties. To alleviate these problems, use of Tetra Ethyl Orthosilicate (TEOS) nano fibers manufactured using electrospinning technique in fiber Glass-Epon composite laminates is investigated for their potential to improve the interlaminar properties. Electrospun coated fiber glass woven mats are impregnated with epoxy resin using Heated-Vaccum Assisted Resin Transfer Moulding (H-VARTM) process. The interlaminar properties of the nano engineered hybrid composites obtained using ASTM Double Cantilever Beam (DCB) tests and short beam shear tests are compared with those without the presence of electrospun fiber layers, to study their influence. The short beam shear tests revealed a 20% improvement due to presence of TEOS interlaminar electrospun nanofibers. It is also noteworthy that fibers cured at different temperature levels had variation in performance as observed in MSBS test results.

Effect of Plasma Surface Treatment on the Impact Behavior of Basalt/Epoxy Composites

2019 ◽  
Vol 813 ◽  
pp. 441-446
Author(s):  
Maria Rosaria Ricciardi ◽  
Ilaria Papa ◽  
Giuseppe Coppola ◽  
Filomena Impero ◽  
Valentina Lopresto ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Plasma Treatment ◽  
Composite Laminates ◽  
Atmospheric Oxygen ◽  
Epoxy Composites ◽  
Low Velocity Impact ◽  
Impact Behavior ◽  
Low Velocity ◽  
Composite Surface ◽  
The Impact

In this study, the effects of surface treatment of a low-temperature atmospheric oxygen plasma on basalt/epoxy composites were investigated to improve the hydrophobility of the composite surface. After the plasma treatment, the unmodified and surface treated composite laminates have been experimentally characterized by performing contact angle measurements, low-velocity impact tests and indentation depth on the impacted laminates. Results have showed a dependence of such composite properties on the plasma coating deposition and on the treatment parameters outlining the need to optimize both the plasma power and exposition time to plasma in order to assess the efficiency of the plasma treatment and establish the optimal processing conditions.

Mechanical degradation of carbon fiber/vinyl ester samples subject to marine environments

2021 ◽  
pp. 002199832110050
Author(s):  
Ilaria Papa ◽  
Antonio Formisano ◽  
Valentina Lopresto ◽  
Pietro Russo
Keyword(s):  
Carbon Fiber ◽  
Vinyl Ester ◽  
Low Velocity Impact ◽  
Mechanical Degradation ◽  
Low Velocity ◽  
Saline Environment ◽  
Short Beam ◽  
Before And After ◽  
Beam Shear ◽  
Water Saturated

The paper deals with the mechanical degradation of composite material components in seawater at room temperature. In particular, this study compares quasi-static and dynamic behaviour of carbon fiber/vinyl ester components, dry and water saturated in a saline environment at 3% to simulate the seawater exposition. At this regard, short-beam shear, flexural and low-velocity impact tests were systematically performed before and after the conditioning of the material under examination. Finally, the damage of the impacted specimens was carefully analyzed by visual inspections and ultrasound investigations. Despite a very low water absorption, the analyses allow to highlight different phenomena, reflecting on variations in the mechanical properties and in the extent of the damage of the investigated samples.

Sign in / Sign up

Export Citation Format

Share Document