Experimental investigation of the behavior of filament-wound glass fiber reinforced plastic tubes under axial compressive and hoop tensile stresses.

Güler, Mehmet Hilmi


Assessment of different finite element modeling techniques on delamination growth in advanced composite structures
Uçak, İbrahim; Parnas, Kemal Levend; Department of Mechanical Engineering (2012)
Virtual crack closure technique (VCCT) is commonly used to analyze debonding/delamination onset and growth in fiber reinforced composite assemblies. VCCT is a computational fracture mechanics based approach, and is based on Irwin’s crack closure integral. In this study, the debonding/delamination onset and growth potential in a bonded fiber reinforced composite skin-flange assembly is investigated using the VCCT. A parametric finite element analyses is conducted. The finite element analyses results are comp...
Experimental determination of tool wear in routing and trimming of CFRP composites
Peker, Zühal; Akkök, Metin; Kılıç, S. Engin; Department of Mechanical Engineering (2015)
In order to fulfill growing demand for lighter aircraft, Carbon fiber reinforced polymers (CFRP) have been developed, which differ from metals with regards to their machinability characteristics. The main problem in machining process is the damage caused by delamination of CFRP materials which need to be both cut and shorn of fibers at the same time, since they are remarkably abrasive in nature. This research aims at accessing the most appropriate cutting condition with less tool wear in routing and trimmin...
Experimental Investigation of Strength of Curved Beam by Thin Ply Non-Crimp Fabric Laminates
Arca, M. A.; PAPİLA, MELİH; Çöker, Demirkan (2016-06-09)
Resistance against delamination failure and through the thickness tensile properties of curved carbon fiber reinforced plastics composites are investigated experimentally by conducting the curved beam strength tests. Effect of novel material thin ply non crimp fabric (NCF) architecture on delamination resistance of carbon fiber reinforced composites are investigated and compare with that of standard UD layups. In order to determine through the thickness tensile properties of curved carbon fiber composites, ...
Experimental investigation of the effect of CNT addition on the strength of CFRP curved composite beams
Arca, M.A.; Uyar, I.; Çöker, Demirkan (2015-01-01)
Carbon nanotubes (CNT) have been attracting attention as a toughening material in composite matrix due to their excellent mechanical properties. However, superior properties of CNTs have not yet been realized in the strengthening of composites against fracture. This study focuses on investigating the effect of CNT variation in the epoxy resin on the strength of curved composite beams. Specimens are [0/90] fabric carbon/epoxy composite laminates manufactured by hand layup technique 3 % wt CNT fractions in th...
Free bending vibrations of integrally-stiffened and/or stepped-thickness rectangular plates or panels with a non-central plate stiffener
Yuceoglu, U.; GEMALMAYAN, NİHAT; Sunar, O. (2007-11-16)
The present study is primarily concerned with the "Free Bending Vibrations of Integrally-Stiffened and/or Stepped-Thickness Plates or Panels with a Non-Central Plate Stiffener". The general theoretical formulation is based on the "Mindlin Plate Theory". The plate elements of the system are considered to be made of dissimilar orthotropic materials with unequal thicknesses. The transverse shear deformations and the transverse and the rotary moments of inertia of plate elements are included in the analysis. Th...
Citation Formats
M. H. Güler, “Experimental investigation of the behavior of filament-wound glass fiber reinforced plastic tubes under axial compressive and hoop tensile stresses.,” Ph.D. - Doctoral Program, Middle East Technical University, 1985.