Results 31 to 40 of about 231 (111)

Mechanical strength and shape accuracy optimization of polyamide FFF parts using grey relational analysis

Scientific Reports, 2022
This paper investigates the effect of different additive manufacturing process parameters such as chamber temperature, Printing temperature, layer thickness, and print speed on five essential parameters that characterize the manufactured components ...
Zohreh Shakeri, Khaled Benfriha, Nader Zirak, Mohammadali Shirinbayan   +3 more
doaj   +1 more source

Thermodynamic analysis of methanol, ammonia, and hydrogen as alternative fuels in HCCI engines

International Journal of Thermofluids, 2023
The present study enters in the context of reducing harmful emissions of the marine fleet by using three of the most promising alternative fuels, namely methanol, ammonia, and hydrogen.
Mohamed Djermouni, Ahmed Ouadha
doaj   +1 more source

Thermal ageing effect on solute segregation and precipitation in the heat-affected-zone of dissimilar metal welds for nuclear power plants

Materials & Design, 2023
Solute segregation in the carbon-depleted (CDZ) heat-affected zone of dissimilar metal welds (DMW) designed for nuclear power plant EPRTM reactors has been investigated by atom probe tomography (APT) and related to the mechanical properties (toughness ...
I. Medouni, A. Portavoce, P. Maugis, M. Descoins, M. Yescas, F. Roch, P. Joly, K. Hoummada   +7 more
doaj   +1 more source

Etude de la variabilité saisonnière des précipitations sur le plateau de Mbé au Pool-Nord (Congo-Brazzaville) : impacts sur les eaux de surface et souterraines [PDF]

Proceedings of the International Association of Hydrological Sciences, 2021
Cette étude porte sur l'impact de la variabilité saisonnière des précipitations sur les eaux du Plateau de Mbé. 120 échantillons d'eau ont été prélevés dans huit (08) points d'eau (1 puits, 4 forages et 3 rivières) entre novembre 2017 et août 2018.
H. Obami-Ondon, M. Ngouala Mabonzo, U. G. Mbilou, B. Mabiala   +3 more
doaj   +1 more source

General Mathematical Model for Analysing the Bending Behaviour of Rectangular Concrete Beams with Steel, Fibre-Reinforced Polymers (FRP) and Hybrid FRP–Steel Reinforcements

Buildings, 2022
The design guidelines available in building codes for steel and fibre reinforced polymer (FRP) reinforced concrete (RC) beams have been developed on the basis of empirical models.
Issam Ouahmane, Rachid El Alaiji, Mohammed Sallaou, Larbi Lasri   +3 more
doaj   +1 more source

On the Statistical Properties of Multiscale Permutation Entropy: Characterization of the Estimator’s Variance

Entropy, 2019
Permutation Entropy (PE) and Multiscale Permutation Entropy (MPE) have been extensively used in the analysis of time series searching for regularities.
Antonio Dávalos, Meryem Jabloun, Philippe Ravier, Olivier Buttelli   +3 more
doaj   +1 more source

Stability analysis of the pitch angle control of large wind turbines using different controller strategies

Advances in Mechanical Engineering, 2022
Reducing the environmental impact necessitates a boost in renewable energy conversion systems. Wind energy is regarded as one of the most essential energy sources.
H Bouregba, M Hachemi, M Bey, A Hamidat
doaj   +1 more source

Tailoring the Mechanical and Thermal Properties of PEEK with Hydroxyapatite Addition for Enhanced Orthopedic Performance [PDF]

MATEC Web of Conferences
This study focuses on developing bioactive PEEK composites for orthopedic and dental applications. While PEEK offers excellent strength, biocompatibility, and radiolucency, its biological inertness limits bone integration.
Timoumi Mohamed, Barhoumi Najoua, Znaidi Amna, Maazouz Abderrahim, Lamnawar Khalid   +4 more
doaj   +1 more source

Simulation of CuO-water nanofluid natural convection in a U-shaped enclosure with a T-shaped baffle

Journal of Engineering and Applied Science, 2023
The effect of aspect ratio and baffle shape on natural convection patterns in a U-shaped cavity filled with CuO water-based nanofluid is examined in detail, with a T-shaped baffle attached to the cold wall.
Farah Zemani, Omar Ladjedel, Amina Sabeur   +2 more
doaj   +1 more source

Nonlinear Dynamics of the Quadratic‐Damping Helmholtz Oscillator

Complexity, Volume 2020, Issue 1, 2020., 2020
In this paper, the Helmholtz equation with quadratic damping themes is used for modeling the dynamics of a simple prey‐predator system also called a simple Lotka–Volterra system. From the Helmholtz equation with quadratic damping themes obtained after modeling, the equilibrium points have been found, and their stability has been analyzed. Subsequently,
R. Fangnon, C. Ainamon, A. V. Monwanou, C. H. Miwadinou, J. B. Chabi Orou, Karthikeyan Rajagopal   +5 more
wiley   +1 more source