نتایج جستجو برای: over break
تعداد نتایج: 1172400 فیلتر نتایج به سال:
The aim of this research is investigation of mechanical properties regarding the polyurethanes as the binder of plastic bonded explosives. Due to the great effect of mechanical properties on application of these materials, the influence of Isocyanate/Hydroxyl ratio, crosslink density, the type of curing agent, hard segment and temperature on mechanical properties of these materials were investi...
Hydroxyapatite is a biocompatible ceramic and reinforcement for bone implantations. SEVA/HAP composite content HAP filler with difference particle sizes were designed. Mechanical tests like tensile modulus, UTS, strain at break and biodegradation were investigated. Results illustrated much increase tensile modulus of composites content HAP nano powders ratio to micro powders. Also UTS analysis ...
In this paper, maximum value of energy to break at Charpy impact test as a criterion of fracture toughness of AISI 316/A387 Gr.91 weld joints with ERNiCrMo-3 filler metal were obtained by optimization of pulesd current gas tungsten arc welding process parameters. The selected parameters were peak current, background current, frequency and on time percentage that were changed in three levels. Th...
This paper presents the numerical simulations of flow and dam body sediment transport over a movable bed due to an earthfill break. The RANS equations, together with k-ω SST turbulent model, are employed. phase characteristic parameter is used as phases air, water, sediment, bulk body. system equations solved numerically using PISO algorithm. model first verified break experimental data from li...
Hydroxyapatite is a biocompatible ceramic and reinforcement for bone implantations. SEVA/HAP composite content HAP filler with difference particle sizes were designed. Mechanical tests like tensile modulus, UTS, strain at break and biodegradation were investigated. Results illustrated much increase tensile modulus of composites content HAP nano powders ratio to micro powders. Also UTS analysis ...
In this paper, maximum value of energy to break at Charpy impact test as a criterion of fracture toughness of AISI 316/A387 Gr.91 weld joints with ERNiCrMo-3 filler metal were obtained by optimization of pulesd current gas tungsten arc welding process parameters. The selected parameters were peak current, background current, frequency and on time percentage that were changed in three levels. Th...
This paper introduces a novel soldering method for joining aluminum foams to aluminum plates. In this method, a rotating aluminum plate is soldered to the aluminum foam using zinc-based solder material. Rotation of the aluminum plate over the solder material drags the solder material and stirring it. Excellent tensile strength was obtained compared to those samples that are welded with the sold...
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