Topic
Fractography
About: Fractography is a research topic. Over the lifetime, 5043 publications have been published within this topic receiving 86068 citations.
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TL;DR: In this article, a three-point bending test was used to evaluate the fracture surface of SiO 2 /epoxy nanocomposite and the fracture toughness was obtained using a three point bending test.
48 citations
TL;DR: In this paper, the effects of matrix aging condition (i.e., matrix temper) on the fracture toughness of 2XXX and 7XXX Al matrix alloys reinforced with SiC particulates, and the results are compared with the mechanical behavior.
48 citations
DOI•
16 Aug 2012
TL;DR: In this article, the effect of surface finish on mechanical properties of Ti-6Al-4V parts was analyzed using scanning electron microscopy and the fractography results were correlated with the mechanical properties.
Abstract: Cylindrical Ti-6Al-4V parts were built in vertical and horizontal orientations using electron beam melting. Tensile tests and fatigue tests were carried out. The specimens were tested in as-built and machined conditions to understand the effect of surface finish on mechanical properties. The fracture surfaces were analyzed using scanning electron microscopy and the fractography results were correlated with the mechanical properties. Based on the results the effects of part orientation and surface finish on mechanical properties are discussed.
48 citations
15 Nov 2009-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, an experimental investigation into the ambient temperature, load-controlled tension-tension fatigue behavior of a martensitic Nitinol shape memory alloy (SMA) was conducted.
Abstract: An experimental investigation into the ambient temperature, load-controlled tension–tension fatigue behavior of a martensitic Nitinol shape memory alloy (SMA) was conducted. Fatigue life for several stress levels spanning the critical stress for detwinning was determined and compared with that obtained on an alloy similar in composition but in the austenitic state at room temperature. Results show that the fatigue life of the pseudo-plastic alloy is superior to superelastic shape memory alloy. The stress–strain hysteretic response, monitored throughout the fatigue loading, reveals progressive strain accumulation with the cyclic loading. In addition, the area of hysteresis and recoverable and frictional energies were found to decrease with increasing number of fatigue cycles. Post-mortem characterization of the fatigued specimens through calorimetry and fractography was conducted in order to get further insight into the fatigue micromechanisms. These results are discussed in terms of reversible and irreversible microstructural changes that take place during cyclic loading. Aspects associated with self-heating of martensitic alloy undergoing high frequency stress cycling are discussed.
48 citations
20 Aug 2010-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: The energy-based approach for the evaluation of low cycle fatigue behavior of 2.25Cr-1Mo steel at elevated temperature has been investigated and detailed analyses discussed in this article.
Abstract: The energy-based approach for the evaluation of low cycle fatigue behaviour of 2.25Cr–1Mo steel at elevated temperature has been investigated and detailed analyses discussed. Plastic strain energy was determined per cycle and found to characterise both crack initiation and propagation to failure regimes. At cyclic stabilisation, average plastic strain energy may be used as a suitable damage parameter and correlations between experimental and predicted data determined. The fatigue toughness to failure of the material was established and the development of a fatigue toughness to crack propagation analysis is presented.
48 citations