The Effect of Nanocomposite Coating with Different Concentrations on Fatigue Life of Carbon Steel AISI 1045
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Saad M. A Saad M. Aldousari
Abstract
Recently, nano-materials have received more attention due to their potential application as practical structural and functional materials. The unique mechanical properties of CNTs, especially their high strength and stiffness, make them highly attractive for potential improvement of mechanical properties of structural materials. The aim of this research is to investigate experimentally the effect of coated nano-composite with different concentrations on fatigue life behaviour of carbon steel specimens with 0.3 μm surface finish. Nano-adhesives of epoxy resin are synthesized and evaluated. They are modified by multi walled carbon nanotubes (MWCNT) (0.3 wt.- %, 0.5 wt.- %, 0.7 wt.- %) as reinforcement. Fatigue tests are conducted on specimens using a rotating bending machine of the cantilever type to evaluate the fatigue strength and these are compared with them obtained for the neat material. By comparing the results of specimens coated with different concentrations of MWCNT-epoxy composition with the base materials, it is found that 0.5 wt.- % of MWCNT composition is the best selection for specimens having 0.3 μm roughness. As compared to the base materials, the fatigue life increased by 383 %, 785 %, 1239 %, and 800 % by coating with neat epoxy as well as with 0.3 wt.- %, 0.5 wt.- %, and 0.7 wt.- % MWCNT-epoxy, respectively.
Kurzfassung
Nanomaterialien haben kürzlich mehr Aufmerksamkeit auf Grund ihrer potentiellen Anwendung als praktische Struktur- und Funktionswerkstoffe, erfahren. Die einzigartigen mechanischen Eigenschaften von Kohlenstoffnanoröhrchen (CNT), insbesondere ihre hohe Festigkeit und Steifigkeit, machen sie als Elemente für die Verbesserung der mechanischen Eigenschaften von Strukturwerkstoffen sehr attraktiv. Das Ziel der diesem Beitrag zugrunde liegenden Forschungsarbeiten war es, die Auswirkungen von Nanokompositbeschichtungen mit verschiedenen Konzentrationen auf die Lebensdauer von Kohlenstoffstahlproben mit einem Oberflächenfinish von 0,3 μm zu untersuchen. Nanoklebstoffe aus Epoxidharz wurden hierzu synthetisiert und charakterisiert. Diese wurden mit Multi-Walled Carbon Nanotubes (MWCNT) mit 0.3 wt.- %, 0.5 wt.- % und 0.7 wt.- % verstärkt. Es wurden hierzu Versuche mit einer Umlaufbiegemaschine des Hebeltyps zur Bestimmung der Ermüdungsfestigkeit durchgeführt und mit dem ursprünglichen Werkstoff verglichen. Im Vergleich der Ergebnisse der Proben, die mit verschiedenen Konzentrationen einer MWCNT-Epoxy-Mischung beschichtet wurden, mit den Grundwerkstoffen zeigt, dass eine 0,5 wt.- % MWCNT Mischung die beste Auswahl für Proben mit einer Rauheit von 0,3 μm darstellen. Im Vergleich zu den Grundwerkstoffen erhöhte sich die Lebensdauer um 383 %, 785 %, 1239 % bzw. 800 % mit einer Epoxybeschichtung sowie einer Beschichtung mit 0,3 wt.- %, 0,5 wt.- % und mit 0,7 wt.- % MWCNT-Epoxy.
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© 2013, Carl Hanser Verlag, München
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- Microstructural Investigations of Electron Beam Welded Joints of Continuous Saw Blades
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Articles in the same Issue
- Inhalt/Contents
- Inhalt
- Fachbeiträge/Technical Contributions
- Effects of Copper (Cu), Indium (In), Tin (Sn), Antimony (Sb) and Zinc (Zn) in Sterling Silver Alloys on Mechanical Properties Improvement
- Improvement of Surface Properties of Nickel-Based Superalloys Grade Haynes 214 by Pack Aluminizing
- Ein Sensorkonzept zur In-situ-Rissüberwachung in plattenartigen Strukturen
- Failure Analysis of a Hardened Steel Clamping Head
- Improved Stress Shielding on a Cementless Tibia Tray using Functionally Graded Material
- Influence of Plasma Carbonitriding and Nitriding on Phase Composition and Mechanical Properties of a X 12 CrNi 18 10 Ti Stainless Steel Surface
- Schallfeldmodellierung von Ultraschall-Transversalwellen-Prüfköpfen
- Microstructural Effects on Fatigue Behaviour of a Forged Medium Carbon Microalloyed Steel
- Effect of Ti Addition on the Microstructure and Properties of a High Speed Steel Roll
- The Effect of Nanocomposite Coating with Different Concentrations on Fatigue Life of Carbon Steel AISI 1045
- Microstructural Investigations of Electron Beam Welded Joints of Continuous Saw Blades
- Analysis on Dynamic Compaction and Mechanical Behavior of Reclamation Foundation Using Soil Tests
- Vibration response of cement structures under conditions of impact loads
- Vorschau/Preview
- Vorschau
