+1 Recommend
0 collections
      • Record: found
      • Abstract: found
      • Article: found

      Observation of the Fatigue Crack Propagation Rate of an Aluminum Alloy Specimen under Fatigue Spectrum Loadings Translated title: Beobachtung der Ermüdungsrissfortschrittsrate einer Aluminiumlegierung unter Spektren von Beanspruchungen


      Read this article at

          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.


          This paper presents an assessment on fatigue crack propagation (FCG) behaviour and fractography observation of an aluminum alloy that was exposed under spectrum loadings. The FCG test has three types of cyclic loadings, namely, constant-amplitude loading (CAL) as well as high-to-low and low-to-high sequence loadings. All three have been performed with the Al6061-T6 specimens. The tests were performed using a 100 kN servo-hydraulic fatigue testing machine according to ASTM E647 standard. The results show that fatigue crack propagation and its fractography were influenced by the load interaction and the sequence, which affect the fracture behaviour of aluminum alloys. The fracture surface exhibited irregular local striation spacings under the spectrum loading. Moreover, the micrographs show increased plasticity throughout the crack propagation compared to CAL.


          In dem vorliegenden Beitrag wird eine Abschätzung des Ermüdungsrissfortschrittes (fatigue crack propagation (FCG)) sowie fraktographische Beobachtungen für eine Aluminiumlegierung präsentiert, die Beanspruchungsspektren ausgesetzt war. Der FCG-Test beinhaltet drei dynamische Beanspruchungsarten, und zwar die Beanspruchung mit konstanter Amplitude sowie Beanspruchungssequenzen von niedriger zu hoher und von hoher zu niedriger Beanspruchung. Alle drei wurden mit Proben der Aluminiumlegierung Al6061-T6 durchgeführt. Die Prüfungen fanden mit einer 100 kN servohydraulischen Prüfmaschine entsprechend dem ASTM E647 Standard statt. Die Ergebnisse zeigen, dass der Ermüdungsrissfortschritt und die Fraktographie durch die Interaktion der Beanspruchungen und die Sequenz beeinflusst werden, die sich auf das Rissverhalten von Aluminiumlegierungen auswirken. Die Bruchoberfläche wies irreguläre lokale Abstände zwischen den Streifen bei der Beanspruchung mit Spektren auf. Darüber hinaus zeigten die Gefügeaufnahmen eine erhöhte Plastifizierung während des Rissfortschrittes im Vergleich zur Beanspruchung unter konstanter Amplitude auf.

          Related collections

          Most cited references19

          • Record: found
          • Abstract: not found
          • Article: not found

          Low cycle fatigue properties of an extruded AZ31 magnesium alloy

            • Record: found
            • Abstract: not found
            • Article: not found

            Stochastic fatigue damage modeling under variable amplitude loading

              • Record: found
              • Abstract: not found
              • Article: not found

              Fatigue crack growth in the aluminium alloy D16 under constant and variable amplitude loading

              J Schijve (2004)

                Author and article information

                Materials Testing
                Carl Hanser Verlag
                : 54
                : 10
                : 663-673
                1 Selangor, Malaysia
                Author notes

                Shahrum Abdullah is professor in the Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia (UKM). Currently, he is the head of Centre of Automotive Research at UKM. He holds B. Eng (Hons) in Mechanical Engineering from Universiti Kebangsaan Malaysia, Master of Science from Loughborough University, United Kingdom and PhD from University of Sheffield, United Kingdom, in 2005. His major research interest is in fatigue in engineering. Prof. Abdullah is a graduate member of Institution of Engineers Malaysia, a fellow member of Welding Institute of Malaysia, and the Committee Member of Malaysian Association for Computational Mechanics.

                Kamarul Ariffin Zakaria was graduated in B. Eng. Mech. (1997) and M. Eng. Mech. (2007) from Universiti Teknologi, Malaysia. He is lecturer at Universiti Teknikal Malaysia Melaka. Currently, he is pursuing PhD studies at Universiti Kebangsaan Malaysia. He is doing research on fatigue life assessment, mechanical behaviour on materials and mechanics. He is a member of Board of Engineers, Malaysia (BEM).

                Mariyam Jameelah Ghazali is associate professor in the Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia. She holds B. Eng (Hons) and MSc in Materials and Minerals Resources Engineering from Universiti Sains Malaysia and a PhD from University of Sheffield, United Kingdom, in 2005. Her research interest includes wear of materials, surface engineering and materials processing.

                © 2012, Carl Hanser Verlag, München
                Page count
                References: 33, Pages: 11
                Fachbeiträge/Technical Contributions

                Materials technology,Materials characterization,Materials science
                Materials technology, Materials characterization, Materials science


                Comment on this article