Research Highlights

• To establish probabilistic slope analysis with spatial variability.
• To develop efficient surrogate models.
• To calibrate load and resistance factors.
• To formulate reliability-based optimal design procedures for practical geotechnical applications.

• Modeling spatial variability of soil properties using stationary and non-stationary random fields.
• Developing and improving machine learning-based surrogate models for slope reliability analysis.
• Calibrating load and resistance factors within reliability-based design frameworks.
• Formulating reliability-based optimal design methods for slopes considering spatial heterogeneity.

• Random field simulation techniques.
• Monte Carlo Simulation integrated with surrogate models.
• Machine learning approaches with active learning strategies.
• Reliability analysis methods and LRFD calibration procedures.
• Metaheuristic optimization algorithms for reliability-based design.

• Scientific publications (ISI/Scopus/domestic): 02 papers on ISI-Q1 and 01 paper on ISI-Q2 journals
  • Published: Surrogate-based dimension reduction for reliability analysis and LRFD calibration: Breakwater foundations in depth-varying soils. Nhu Son Doan. Journal: Ocean Engineering, April 2026 issue P2, Vol 352, pp. 124623.
• Article(s) in other International Journals: 01 paper on SCOPUS journal (expected)
• National Scientific Journals: 02 (expected)
• Conference paper: 02 (expected)
• Monograph: 01 (expected)

• Developed a computationally efficient framework for slope reliability analysis with spatial variability.
• Improved surrogate modeling techniques with enhanced accuracy and reduced computational cost.
• Established practical procedures for calibrating load and resistance factors in LSD-based design.
• Formulated a reliability-based optimal design methodology applicable to real engineering problems.
• Provided a scientific basis supporting the transition toward reliability-based geotechnical standards.

• To extract natural compounds from plant leaves with corrosion inhibition capability for reinforced concrete structures in coastal and island environments.
• To evaluate the effectiveness and feasibility of using natural compounds to produce environmentally friendly corrosion-inhibiting admixtures.

• Literature review
• Selection of raw materials for the extraction process
• Evaluation and selection of preprocessing and preservation technologies for input materials
• Development of technological process for producing corrosion-inhibiting admixtures for reinforced concrete from plant leaf extracts
• Evaluation of the corrosion inhibition efficiency of the admixture in reinforced concrete

• Scientific publications: 02 ISI-indexed papers and 01 reputable domestic journal article
• Technological process/software/model/equipment: Corrosion-inhibiting admixture extracted from plant leaves; industrial-scale technological process.

The project successfully identified a natural raw material source, namely Cleistocalyx operculatus leaves, and developed an optimized extraction process. An environmentally friendly corrosion-inhibiting admixture system was successfully fabricated.

Electrochemical experiments demonstrated that the admixture significantly reduces the corrosion rate of CT3 steel in simulated seawater environments. When incorporated into reinforced concrete, the admixture exhibited good compatibility and improved chloride ion penetration resistance.

• To determine the current status, causes, and formation mechanisms of rip currents at selected beaches in Hai Phong City;
• To predict the occurrence of rip currents during peak tourist months;
• To propose practical solutions to mitigate hazards caused by rip currents.

• Literature review
• Data collection and Assessment of rip current conditions at seven beaches
• Development of numerical simulation models
• Synthesis and evaluation of research findings

• Scientific publications: 01 paper published in the Journal of Marine Science and Technology
• Comprehensive dataset, rip current prediction results, forecasting maps for seven beaches, and proposed solutions.

Successfully applied MIKE 21 hydrodynamic modeling and RTK surveying techniques to accurately assess and develop a comprehensive set of rip current prediction maps for seven beaches in Do Son and Cat Ba.

Established a high-resolution 3D topographic database of beach morphology and proposed practical safety solutions such as standardized warning signage systems and optimal locations for floating buoy barriers.

• To refine high-quality Mg from domestic raw materials and develop a simple, cost-effective manufacturing process suitable for local conditions.
• To alloy Mg with elements such as Al, Zn, Re, etc., in order to produce Mg-based sacrificial anodes with high electrochemical potential for corrosion protection of steel structures within the city.

• Literature review
• Development of a technological process for producing high-purity Mg
• Development of a technological process for manufacturing Mg alloys used for sacrificial anodes
• Development of a manufacturing process for sacrificial anodes from the studied Mg alloys
• Experimental production and process optimization

• Technological process for producing high-purity Mg metal
• Technological process for producing Mg alloys
• Manufacturing technological process
• High-quality Mg metal
• Mg alloys and sacrificial anodes

A comprehensive review has been conducted on methods to improve durability and corrosion resistance of steel structures, as well as on manufacturing techniques for various types of sacrificial anodes, providing the basis for selecting suitable Mg alloys for anode production.

Modern methods for Mg production have been collected, analyzed, and evaluated. Appropriate methods with high economic efficiency, simple technology, and cost-saving advantages have been selected for producing high-purity Mg used in sacrificial anodes with good corrosion protection properties. The influence of technological parameters on the high-purity Mg production process has also been evaluated.

Experimental data have been used to analyze and determine optimal technological parameters, thereby establishing a production process for high-quality Mg suitable for manufacturing sacrificial anodes.

The Mg sacrificial anode casting technology has been analyzed and selected; technological parameters and geometric characteristics of the sacrificial anodes have been evaluated. An efficient, cost-effective, and technically simple casting process for Mg sacrificial anodes has been proposed.

To manufacture Al–Zn alloy and improve its ductility through modification using rare-earth elements La and Ce. At the same time, to determine optimal technological parameters for the production process of Al–Zn alloy sheets.

To complete the manufacturing process for Al–Zn–Mg–Cu alloy with chemical composition equivalent to aluminum alloy grade 7475, and to optimize technological parameters for melting and modification processes to refine grain size using La and Ce in combination with thermo-mechanical treatment. The objective is to significantly improve ductility (elongation > 200%) and enhance strength after forming. To establish a complete technological procedure and parameter set for tensile testing, including specimen dimensions, testing temperature, and strain rate.

• Literature review
• Development of melting and casting process for Al–Zn–Mg–Cu alloy
• Development of heat treatment and thermo-mechanical processing procedures to strengthen Al–Zn–Mg–Cu alloy
• Development of high-temperature tensile testing procedures to evaluate formability of La- and Ce-modified Al–Zn–Mg–Cu alloy
• Experimental manufacturing and process optimization
• Final report preparation

Theoretical review combined with experimental methods and advanced analytical techniques for evaluating microstructure and mechanical properties of materials.

• Scientific reports (technical reports, summary report, final report)
• Set of technological procedures for melting and casting high-ductility Al–Zn alloy containing La and Ce
• Set of heat treatment and thermo-mechanical processing procedures for high-ductility Al–Zn alloy system
• Set of high-temperature tensile testing procedures for Al–Zn alloy
• Verified dataset of material performance indicators

Project 957 has achieved notable results in three aspects: scientific novelty, technological completeness, and application value. The project has demonstrated the effectiveness of La and Ce modification for Al–Zn–Mg–Cu alloys and has initially clarified the grain refinement mechanism and ductility improvement of intermetallic phases. In particular, Al₁₁Ce₃ acts as a nucleation site, while Al₃La contributes to inhibiting grain growth.

From a technological perspective, the most significant achievement is the establishment of a relatively complete processing chain to improve alloy ductility, including rare-earth modification, homogenization annealing, severe cold deformation, and recrystallization annealing. With this technological route, the material achieved grain sizes below 10 µm and elongation up to 667%. This represents a very strong result, as the project initially targeted high ductility approaching the superplastic regime with elongation above 200%.

In terms of practical significance, the project goes beyond phenomenon observation by proposing optimal technological parameters for manufacturing sheet-form alloys. This is particularly important because the project documentation clearly identifies the application orientation toward high-strength, high-ductility aluminum materials for forming processes, especially in shipbuilding industry applications.

To develop a technological process for manufacturing low-manganese alloy steel with improved wear resistance for industrial applications.

To develop technological procedures for manufacturing selected components made from low-Mn steel operating under abrasive wear conditions.

• Literature review
• Investigation and determination of technological parameters for producing low-Mn alloy steel
• Development of a technological process for manufacturing low-Mn alloy steel
• Experimental production of low-Mn steel, evaluation, and process optimization
• Experimental production of bucket teeth components and performance evaluation; development of techno-economic report
• Final evaluation and reporting, including statistical report, summary report, and comprehensive report of research outcomes

The project employs a combination of research methods, including data collection and systematization, analytical and statistical methods, theoretical research, and experimental approaches, specifically as follows:

• Theoretical research: Conducting a comprehensive literature review and statistical analysis of domestic and international studies to develop an appropriate research approach.
• Experimental methods: Conducting investigations to evaluate and develop the technological process for producing low-Mn steel, including melting technology, casting process, and heat treatment procedures for the studied low-Mn steel alloy.

• Scientific publications