The flexural strength of 3% mol yttria-stabilized tetragonal polycrystalline zirconia (3Y-TZP) with a ~0.30 m grain size was studied under 4-point bending test. The material was evaluated both as received and after water vapour exposure for long times of 100hr and 200hr at 131oC in autoclave. Results were systematically analyzed by Weibull statistics and fractography. It was found that the mean...

Abstract A new model for the high cycle notch fatigue strength prediction of tool steels subjected to axial loading is proposed, based on previous literatures studies and experimental tests carried out six different steels, including rotating bending notched specimens, fractographic analyses, hardness, residual stress, roughness measurements. The novelty assumption that surface defects are main...

Critical operating temperature can be determined for the machine components that form key functional part of device. This article describes a change failure mechanism in material an engine, where structure consists fine pearlite layers with lamellar graphite equivalent to grey cast iron. The mechanical properties this influence not only formed by perlite, but also acting as stress concentrator....

Abstract The influences of hydrogen on the mechanical properties and fracture behaviour Fe-22Mn-0.6C twinning induced plasticity steel have been investigated by slow strain rate tests fractographic analysis. showed high susceptibility to embrittlement, which led 62.9% 74.2% reduction in engineering with 3.1 14.4 ppm diffusive hydrogen, respectively. surfaces revealed a transition from ductile b...

The ambiguity of the splitting effect on X80 low-carbon microalloyed pipeline steels’ tendency towards brittle fracture prompted an experimental study impact toughness scattering based multiple Charpy tests in a temperature range from 20 °C to −100 °C. A fractographic analysis large number fractured samples was carried out. relationships between toughness, deformability and characteristics were...

The Mode I and II Interlaminar Fracture Toughness (IFT) of Vectran/Epoxy composite material were investigated using the Double Cantilever Beam (DCB) 4 End Notched Flexure (4ENF) methods, respectively. Due to relatively low compressive strength Vectran (<10% its tensile properties), specimens hybridised by over wrapping with T800s/M21 prevent failure during testing. Experimental results then sim...