English for mechanical engineering

This article provides an overview of the mechanism and performance operating cycle of internal combustion engines using water-fuel emulsions and the efficiency, economy, and environmental friendliness of this fuel type for automobiles.

12p viengfa 28-10-2024 1 1   Download

This study proposes therefore to apply the transmissibility functions for modal identification of ambient vibration testing and investigates its performance in presence of harmonics. Numerical examples and an experimental test are used for illustration and validation.

14p vifilm 24-09-2024 7 1   Download

In this study, instrumented indentation testing was conducted at room temperature for the investigation of the effect of strain rate on the hardness and yield strength in the weld zone of a commonly used structural steel, SM520.

9p vifilm 24-09-2024 2 1   Download

This paper presents an efficient and accurate numerical technique based upon the scaled boundary finite element method for the analysis of two-dimensional, linear, second-order, boundary value problems with the domain completely described by a circular defining curve.

11p vifilm 24-09-2024 3 1   Download

In this paper, the continuous stiffness measurement (CSM) indentation is employed to investigate fatigue mechanical properties of structural steel under cyclic loading. For this purpose, several representative analytical approaches were introduced to estimate the basic mechanical properties including Young’s modulus and indentation hardness from the characteristics of the loading/unloading curves.

11p vifilm 24-09-2024 2 1   Download

A big question in the numerical approaches for the mechanical behavior of the textile-reinforced concrete (TRC) composite under tensile loading is how to model the cracking of the cementitious matrix. This paper presents numerical results of 3-D modeling of TRC composite in which the non-linear behavior model was used by considering the cracking for the cementitious matrix.

12p vifilm 24-09-2024 1 1   Download

Mechanical behaviour of bituminous mixtures is characterized by the great thermal sensitivity and the large viscous effects. This paper focuses on the linear viscoelastic (LVE) behaviour of bituminous mixtures that is considered for pavement design.

10p vifilm 24-09-2024 1 1   Download

In comparison with fiber-reinforced polymer (FRP) composite, the textile-reinforced concrete (TRC) presents stability in mechanical performance at elevated temperatures thanks to a thermal protection layer by the cementitious matrix. This paper presents the experimental characterization and analytical modeling for fire performance of carbon TRC under the thermomechanical regime at constant tensile force.

12p vifilm 24-09-2024 3 1   Download

The paper presents a series of laboratory tests for California Bearing Ratio (CBR) to investigate the bearing capacity and the failure mechanism of nonwoven geotextile reinforced clay. The variation of the tests included the number of reinforcement layers and compaction energy.

16p vifaye 20-09-2024 2 1   Download

The microstructure of the LFC was also examined using the scanning electron microscopy (SEM) technique. Furthermore, the results of the present study encourage the reuse of industrial by-products in the production of sustainable construction materials and thus can be considered as a potential solution for industrial solid wastes treatment.

12p vifaye 20-09-2024 2 1   Download

This study, therefore, aimed to manufacture new SA for concrete using WCP mixed with cement as a binder and to evaluate the mechanical properties of SA compared to the specified technical requirements of RCA for concrete in TCVN 11969 in Vietnam.

8p vifaye 20-09-2024 1 1   Download

The study aims to provide an in-depth awareness of the loading capacity, deflection characteristics, and failure mechanisms exhibited by these girders by applying finite element analysis (FEA) techniques.

15p vifaye 20-09-2024 2 1   Download

Unsaturated soil behaviors characterize the failure mechanisms of geotechnical infrastructures with transient seepage conditions. Therefore, an accurate estimate of the unsaturated groundwater flow is vital in improving hazard management and assessment. This study attempts to develop a numerical scheme for 2-D transient analysis under unsaturated conditions.

11p viyoko 20-09-2024 2 1   Download

This paper explores the extent of the current mechanism to access urban spatial planning information of community in urban detailed planning projects (UDPPs), the constraints on urban planning information accessibility in Vietnam context to challenge the community participation for sustainable development.

15p vifaye 20-09-2024 1 1   Download

Structural steel pipes have been applied commonly in the bridge construction for foundations or piers with many advantages such as large bending capacity, high shear resistance, and rapid construction. However, site welded joints may face critical technical matters which need to be considered for steel pipe piers during construction stage.

13p vifaye 20-09-2024 1 1   Download

In this paper, empirical formula for the shear resistance determination of trapezoid concrete dowel in shallow concrete-steel composite floor-beam is formed. This established process is based on the failure mechanism and the ultimate loading of push-out tests.

9p vifaye 20-09-2024 1 1   Download

The primary objective of this research is to develop an ML-PTF on the extreme gradient boosting (XGB) framework capable of estimating soil compression index with high precision and low effort. Furthermore, advancing the quantitative knowledge of which soil structural indicators determine soil compressibility using correlation analysis.

12p vifaye 20-09-2024 3 1   Download

Wastes generated from healthcare practices are a serious problem for humans as well as for the environment. In this study, an attempt was made to use mixed solid medical waste (WPN) which consisted of shredded waste plastic and chopped waste needles for partial replacement of natural fine aggregate (sand) in concrete mixes at 0%, 2%, 4%, 6%, 8% and 10% by weight.

13p vifaye 20-09-2024 2 1   Download

This work demonstrated the potential of US for mitigating membrane fouling. However, the integration of the US transducers within the membrane system will be a major challenge for the application of US in membrane cleaning. It is more appropriate that US is used as pre-treatment to the membrane system, the transducers can be placed prior to the coagulant feed line. Further work on the determination of the detailed mechanisms associated with enhancing coagulation would enable optimisation of the system with regard to process, cost and energy efficiency.

108p runthenight05 01-03-2023 7 3   Download

In this thesis, a numerical model with detailed reaction mechanism which is tailored for studying the behaviour of combustion of natural gas has been introduced and validated with available experimental data. The numerical model attempts to comprehensively simulate the physical conditions (temperature and pressure), equivalent ratio, and fuel dilution and strain rate effect in the laminar flames.

158p runthenight05 01-03-2023 14 3   Download