Mg-13Gd-4Y-2Zn-0.4Zr (wt. %) alloy bar produced by three passes reciprocating upsetting extrusion (named as RUE-ed bar) exhibited fine grain with the average size of 3.02 μm. Hot compression tests were carried out on Gleeble-3800 unit at different deformation temperatures (653, 683, 713, and 743 K) strain rates (0.001–1 s, 0.01–1 0.1–1 0.5–1 s). This showed work hardening softening stages in ho...

In this study, high-temperature tensile tests were carried out on a Gleeble-3500 thermal simulator under strain rate of ε = 1 × 10−3 s−1 in the temperature range 600–1310 °C. The hot deformation process Fe–15.3Mn–0.58C–2.3Al TWIP/TRIP at different temperatures was studied. whole tested range, reduction area ranged from 47.3 to 89.4% and reached maximum value 1275 Assuming that 60% is relative d...

Microstructure and behavior of parts fabricated via additive manufacturing (AM) usually differ from their conventionally manufactured counterparts. In an effort to further study such differences, this paper is concerned with comparing weldability characteristics AM wrought materials, for integration replacement into legacy systems. A Gleeble 1500 was used simulate the heat affected zone (HAZ) g...

A new biomaterial Ti–14Cr alloy was designed for biomedical applications. The manufacturing process of Ti alloys through hot deformation is crucial controlling the grain structure and mechanical performance alloy. In present study, several compression tests at elevated temperatures (1123–1273 K) strain rate ranges 0.01–10 s−1 were conducted using a Gleeble-3800 thermomechanical simulator. proce...

this article proposes composition of fuzzy sets theory with discrete-event simulation and puts it into application in order to model uncertain activity duration in simulating a real-world system. the purpose of this paper is to assess the usefulness of fuzzy simulation for modeling uncertain activity duration, especially when insufficient or no sample data is available. in this research, fuzzy ...

background: simulation teaching means recreating clinical scenario for training / evaluation. aim: to expose postgraduates to simulation / didactic lecture for postpartum hemorrhage (pph) management; to assess which method was more effective. methods: present prospective study was conducted in obstetrics gynecology department of rural tertiary center of northern india.  twenty postgraduates wer...

Open-die forging is a critical step in the manufacture of large numbers components used transportation and energy industries. Dynamic recrystallization, dynamic transformation, precipitation take place during hot deformation process significantly affect microstructure conditioning, which ultimately influences service properties component. In present work, using Gleeble 3800 thermomechanical sim...

discrete element method (dem) is extensively used for mathematical modeling and simulating the behavior of discrete discs and discrete spheres in two and three dimensional space, respectively. prediction of particles flow regime, power draw and kinetic energy for a laboratory or an industrial mill is possible by dem simulation. in this article, a new approach was used to assess the main paramet...

potassium channels allow potassium flux and are essential for the generation of electric current acrossexcitable membranes. potassium channels are also the targets of various intracellular controlmechanisms; such that the suboptimal regulation of channel function might be related to pathologicalconditions. realistic studies of ion current in biologic channels present a major challenge for compu...

objective: in this trial, we intend to assess the effect of simulation-based education approach on advanced cardiovascular life support skills among medical students. methods: through convenient sampling method, 40 interns of mashhad university of medical sciences in their emergency medicine rotation (from september to december 2012) participated in this study. advanced cardiovascular life supp...