High temperature materials

In this study, an artificial neural networkbased Bayesian regularization (ANN) model is proposed to predict the compressive strength of concrete. The database in this study includes 208 experimental results synthesized from laboratory experiments with 9 input variables related to temperature change and design material composition.

12p viengfa 28-10-2024 1 1   Download

Zinc oxide is highly sought after for several applications in biology, optoelectronics, electronics, and sensing. Zinc oxide nanorods exhibit a high exciton binding energy and a wide direct band gap, making them an attractive material for ultraviolet optoelectronic devices in the compound semiconductor field.

6p viling 11-10-2024 2 0   Download

The synthesis and Rhodamine B removal efficiency of monazite monoclinic BiPO4 by hydrothermal route using Bi(NO3)3·5H2O, K2HPO4·3H2Oand HNO3 as staring materials were presented in this work. The obtained samples were characterized by X-ray powder diffraction, high-resolution transmission fieldemission scanning electron microscopy and diffuse reflectance UV-Vis spectrometry.

4p vikwong 29-09-2024 1 1   Download

In this study, we aim to experimentally investigate the effect of temperature on the electrical resistivity of HPFRCs. It is expected that the study findings will provide useful information for developing and utilizing the self-sensing characteristic of HPFRCs.

12p vifaye 20-09-2024 3 2   Download

The aim of this Master of Engineering (MEng) - Aerospace thesis is to study the structural response and failure of aerospace grade composites during exposure to fire. Key aspects of the research are to analyse the thermal and mechanical responses of laminates and sandwich composites in high temperature and fire environments, which result in softening and structural failure. The research is concentrated on carbon/epoxy laminates and sandwich composites, which are the most common composite materials used in aerospace structures.

209p runthenight05 01-03-2023 7 3   Download

The aim of the work "Activated carbon derived from rice husk by NaOH activation and its application in supercapacitor" is to prepare a low-cost, high specific surface area activated carbon with microporous and mesoporous ranges using rice husk as the raw material. The effects of activation temperature on the specific surface area, pore structure, morphology and thermal stability of the AC samples have been examined. The AC samples were proved to be excellent electrode material for supercapacitor, hence solve the disposal and pollution problems of rice husk.

9p runordie3 27-06-2022 12 3   Download

In the current context of eco-pollution, the substitute of conventional plastics with bioplastics is a big confront. On account of that, a non-growth associated PHB production study was conducted using Zobellella species under submerged fermentation process. As a result, Zobellella species showed the ability to accumulate 2.2g/L of PHB at pH 8. 0, temperature 37oC, salt concentration 2% in modified growth medium containing vitamins. Then, primary structural characterization of extracted polymer was conducted by FTIR analysis. The high intense peak was obtained at 1720.

7p nguaconbaynhay6 24-06-2020 38 3   Download

Research institutes and also industrial companies in Czech Republic are involved in High Temperature Gas Cooled Reactor (HTGR) program and activities related to the study of advanced materials and HTGR technologies. These activities are supported by EC (within international projects, e.g. FP7-ARCHER, ALLIANCE, GoFastR can be mentioned) and also by Technology Agency of Czech Republic.

7p christabelhuynh 30-05-2020 32 1   Download

Study of high temperature steam oxidation kinetics during the high temperature oxidation was carried out on the sponge base E110 cladding tubes material in the temperature range 600–1300 °C. The oxidation kinetics derived from the weight gain measurements showed a parabolic rate law for temperatures 1100 °C and higher only.

6p christabelhuynh 30-05-2020 12 1   Download

The article discusses the strength of concrete and other brittle materials in the case of nonuniform biaxial type of compression (σ1 > σ2 > 0) and triaxial compression of σ1 > σ2 = σ3 > 0  type (it was assumed that σ> 0 corresponds to compression). I

6p tohitohi 19-05-2020 16 0   Download

Lithium fluoride (LiF) thermoluminescent powder doped with Mg, Cu, Na, and Si as activators was prepared. The dopant concentrations were varied over the wide ranges as follows: Mg (0.05 - 1.0 mol$\%$), Cu (0.01 - 1.0 mol$\%$), Na,Si (0.3 - 2.4 mol$\%$). The results indicated that the Mg and Cu activators are crucial dopants in the LiF:Mg,Cu,Na,Si phosphors. The LiF:Cu,Na,Si samples without Mg exhibit a peak at low temperature in the thermoluminescent glow curve and in the absence of Cu, the LiF:Mg,Na,Si samples exhibit a peak at high temperature.

8p tuanlocmuido 19-12-2012 35 2   Download

Metal cutting puts extreme demands on the tool and tool material through conditions of high forces, high contact pressures, high temperatures, and intense chemical attack by difficult to cut work materials. In addition, the tool geometry and cutting conditions in terms of sharp edges, cyclic engagement and presence of cutting fluid will add to the severity. Most often cutting tools are used close to their ultimate resistance against these loads, especially to the limiting thermal and mechanical stresses. ...

14p cuunien 20-12-2010 114 17   Download