increase of composite bending strength through fiber tensioning -technical note

نویسندگان

سیامک مطهری

چکیده

in the present research work, the flexural modulus and strength of glass fiber-epoxy resin and carbon fiber-epoxy resin composites have been enhanced through fiber tension during curing of the polymeric resin. this study showed that the tension applied on the fibers increased the flexural modulus of the glass-epoxy composites up to 12% and the flexural strength up to 19%. the flexural modulus and strength of carbon-epoxy were also increased up to 25% and 13%, respectively. it was shown that the optimum fiber tension to obtain the maximum flexural properties depends on the fiber the composite is made of. the mechanism through which the improvement has been achieved was also presented.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Gas Permeation Modeling through a Multilayer Hollow Fiber Composite Membrane

In this study, a time-dependent 2D axisymmetric model of a multilayer hollow fiber composite membrane for gas separation is proposed. In spite of the common multilayer membranes, which a dense layer coated on a porous support layer and subjected into the feed stream, here, the porous support is exposed to the feed gas. In this regard, the governing equations of species transport are developed f...

متن کامل

Technical Note: a Preliminary Study on the Bending Stiffness of Chemically Treated Wood Material for Structural Composite Lumber

This research explored the effect of a chemical treatment on the stiffness of three southern hardwoods, yellow-poplar, sweetgum, and red oak, with the aim of broadening the potential feedstocks for structural composite lumber. Water-saturated 3 15 150 mm samples from each species were heated at 150 C for 30 min in three solutions: 1.0% H2SO4, water, and 1.0% NaOH. The specimens were nondestruct...

متن کامل

An Investigation on the Causes of a Rotor Bending and its Thermal Straightening (TECHNICAL NOTE)

Distortion or bend in a turbine rotor (especially HIP rotors) may be caused by a number of factors, either singularly or in combination. In general, the causes of rotor bend can be classified invariably in two categories: Rapidly forming permanent rotor bends and/or Slower forming rotor bends, which could trip the turbines’ emergency stop. One of the major modifying solutions for rapid repairin...

متن کامل

bending properties of date palm fiber and jute fiber reinforced polymeric composite

in this research work, the effects of natural fibers such as date palm fiber (df) and jute fiber (jf) on bending properties of polypropylene (pp)/ ethylene–propylene–diene–monomer (epdm) thermoplastic elastomers are investigated. for this purpose, the date palm and jute fibers at five levels of fiber weight fractions (0, 5, 10, 20 and 30 wt. %) are utilized during composite fabrication. maleic ...

متن کامل

Quality Improvement Through Multiple Response Optimization (TECHNICAL NOTE)

The performance of a product is often evaluated by several quality characteristics.  ptimizing the manufacturing process with respect to only one quality characteristic will not always lead to the optimum values for other characteristics. Hence, it would be desirable to improve the overall quality of a product by improving quality characteristics, which are considered to be important. The probl...

متن کامل

A New Empirical Model to Increase the Accuracy of Software Cost Estimation (TECHNICAL NOTE)

We can say a software project is successful when it is delivered on time, within the budget and maintaining the required quality. However, nowadays software cost estimation is a critical issue for the advance software industry. As the modern software’s behaves dynamically so estimation of the effort and cost is significantly difficult. Since last 30 years, more than 20 models are already develo...

متن کامل

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023