Next Article in Journal
An Innovative Approach to Control Steel Reinforcement Corrosion by Self-Healing
Previous Article in Journal
TiO2@PEI-Grafted-MWCNTs Hybrids Nanocomposites Catalysts for CO2 Photoreduction
Open AccessArticle

Layup Configuration Effect on Notch Residual Strength in Composite Laminates

1
Department of Lightweight Design with Structured Materials, Brandenburg University of Technology Cottbus-Senftenberg, D-03046 Cottbus, Germany
2
Chair of Physical Metallurgy and Materials Technology, Brandenburg University of Technology Cottbus-Senftenberg, D-03046 Cottbus, Germany
*
Author to whom correspondence should be addressed.
Materials 2018, 11(2), 308; https://doi.org/10.3390/ma11020308
Received: 30 January 2018 / Revised: 14 February 2018 / Accepted: 15 February 2018 / Published: 20 February 2018
(This article belongs to the Section Advanced Composites)
The current trend shows an increasing demand for composites due to their high stiffness to weight ratio and the recent progress in manufacturing and cost reduction of composites. To combine high strength and stiffness in a cost-effective way, composites are often joined with steel or aluminum. However, joining of thermoset composite materials is challenging because circular holes are often used to join them with their metal counterparts. These design based circular holes induce high stress concentration around the hole. The purpose of this paper is to focus on layup configuration and its impact on notch stress distribution. To ensure high quality and uniformity, the holes were machined by a 5 kW continuous wave (cw) CO2 laser. The stress distribution was evaluated and compared by using finite element analysis and Lekhnitskii’s equations. For further understanding, the notch strength of the laminates was compared and strain distributions were analyzed using the digital image correlation technique. View Full-Text
Keywords: composite; notch stress; digital image correlation; Lekhnitskii’s equation composite; notch stress; digital image correlation; Lekhnitskii’s equation
Show Figures

Figure 1

MDPI and ACS Style

Santhanakrishnan Balakrishnan, V.; Seidlitz, H.; Weiß, S. Layup Configuration Effect on Notch Residual Strength in Composite Laminates. Materials 2018, 11, 308.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop