MECHANICAL BEHAVIOR OF MWCNT REINFORCED GFRP COMPOSITES UNDER FATIGUE CONSTANT AMPLITUDE LOADINGS WITH THE PRESENCE OF ARTIFICIAL NOTCHES
Published In: 2ND INTERNATIONAL CONFERENCE ON ADVANCES IN MECHANICAL AND ROBOTICS ENGINEERING
Author(s): ACHILLES VAIRIS , ILONA LAZARIDOU , NIKOLAOS D. ALEXOPOULOS
Abstract: This work studies the effect of artificial surface notches on glass fiber reinforced polymers (GFRPs) under constant amplitude fatigue loadings and for various nano-reinforced matrices. Different concentrations of Multi-Wall Carbon Nanotubes (MWCNTs) were added to the resin before the vacuum assisted resin infusion (VARI) of the composites. Three different MWCNT nanocomposites were manufactured that had concentrations namely 0.5, 0.75 and 3.0 wt% MWCNTs. Before testing, an artificial notch was introduced and two different regions of the composite was continuous monitored during mechanical testing: (a) healthy (without defect) and (b( notched (with the presence of defect). Fatigue tests were performed and with different fatigue maximum stress levels so as to address all fatigue regimes. It was found that a sudden increase takes place on the transition of stage III of the fatigue mechanism. This sudden increase point in the electrical resistance change was applied maximum stress as well
- Publication Date: 26-Oct-2014
- DOI: 10.15224/978-1-63248-031-6-167
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STUDY THE INTERNAL SURFACE AND GEOMETRICAL CHARACTERISTICS OF CYLINDRICAL WORKPIECE IN ECH
Published In: 2ND INTERNATIONAL CONFERENCE ON ADVANCES IN MECHANICAL AND ROBOTICS ENGINEERING
Author(s): JATINDER KAPOOR , SANDEEP SALARIA
Abstract: Electrochemical honing (ECH) is an electrolytic precision micro-finishing technology based on the hybridization of the electrochemical machining and conventional honing process. The ECH technology provides the controlled functional surface generation and fast material removal capabilities of work piece in a single action. This paper presents the distinctive findings of wide-ranging experimental research designed to explore the effect of key ECH process parameters on the workpiece surface micro-geometrical and material removal aspects. In the present work, an experimental setup was designed to study the effect of key parameters on the performance of internal surface and geometric characteristics. The electrolyte concentration, rotary speed, sticks out pressure and flow rate are process parameters selected for the experimental work. Design of experiment is employed for conducting the experiment and analyzing the data. Quadratic equations have been developed to analyze the effect of param
- Publication Date: 26-Oct-2014
- DOI: 10.15224/978-1-63248-031-6-165
- Views: 0
- Downloads: 0