Journal of Science and Transport Technology

  2734-9950

 

 

 

Cơ quản chủ quản:  N/A

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Prediction of California Bearing Ratio (CBR) of Stabilized Expansive Soils with Agricultural and Industrial Waste Using Light Gradient Boosting Machine
- 2021
Van Quan, Hai Quan Do
Using agricultural and industrial waste such as bagasse ash, groundnut shell ash and coal ash in stabilizing expansive soils are used as a subgrade material to reduce harmful impaction of swelling/shrinkage of expansive soils, reduce construction costs. It is also a solution for environmental protection. California Bearing Ratio (CBR) is an important criterion to evaluate the application technique...... hiện toàn bộ
#Stabilized exspansive soil #Machine learning #Light Gradient Boosting #California Bearing Ratio (CBR) #Agricultural/Industrial waste
Nonlinear buckling and postbuckling of spiral stiffened FG-GPLRC cylindrical shells subjected to torsional loads
- 2021
Kha Hoa Le, Tho Hung Vu, Hong Quan Pham, Hoai Nam Vu
The nonlinear buckling behavior of functionally graded graphene platelet reinforced composite (FG-GPLRC) cylindrical shells reinforced by ring, stringer and/or spiral FG-GPLRC stiffeners under torsional loads is studied by an analytical approach. The governing equations are based on the Donnell shell theory with geometrical nonlinearity of von Kármán-Donnell-type, combining the improvability of Le...... hiện toàn bộ
#Functionally graded graphene platelet reinforced composite (FG-GPLRC) #Spiral stiffener #Nonlinear buckling #Torsional load #Cylindrical shell
Postbuckling analysis of externally pressured parabola, sinusoidal and cylindrical FG-GRCL panels using HSDT
Tập 3 Số 2 - Trang 34-42 - 2023
Nguyen Thi Phuong, Cao Van Doan, Vu Hoai Nam
In the present paper, by using the higher-order shear deformation theory and the strain-displacement relationships of large deflection, the postbuckling analysis of the functionally graded graphene-reinforced composite laminated (FG-GRCL) parabola, sinusoidal, and cylindrical externally pressured panels is presented in detail. The complex curvature functions of the parabola and sinusoidal panels a...... hiện toàn bộ
#Postbuckling analysis; Cylindrical panel; Parabola panel; Sinusoidal panel; Higher-order shear deformation theory
Prediction of compressive strength of concrete at high heating conditions by using artificial neural network-based Bayesian regularization
Tập 2 Số 1 - Trang 9-21 - 2022
Marijana Hadzima-Nyarko, Son Hoang Trinh
Cement concrete is the most commonly used material today for constructing residential or commercial buildings, industrial parks, or particular components such as tunnel slabs where there is a high risk of fire. This structure requires concrete to be subjected to high temperatures generated by fires. However, concrete under the influence of high temperature has very complex behavior states with def...... hiện toàn bộ
#Machine learning #ANN #compressive strength #Bayesian regularization #K-fold cross-validation
Temperature effect on the characteristic quantities of microstructure and phase transition of the alloy Ag0.25Au0.75
- 2023
Ștefan Țălu , Tuan Quoc Tran, Hoang Van Ong, Ha Thi Vu, Duyen Thi Tran, Thu-Cuc Thi Nguyen
In this research, Molecular Dynamics (MD) simulations were conducted to explore the temperature effect on the microstructure and phase transition of the Ag0.25Au0.75 alloy. The findings reveal that as the temperature rises, the material's phase transition switches from crystalline to liquid and vice versa. Notably, during the phase transition, significant changes occur in the link length (r), the ...... hiện toàn bộ
#Ag0.25Au0.75 alloy #microstructure #molecular dynamics #phase transition #temperature.
Temperature effect on the characteristic quantities of microstructure and phase transition of the alloy Ag0.25Au0.75
Tập 3 Số 1 - Trang 45-53 - 2023
Ștefan Țălu , Tuan Quoc Tran, Hoang Van Ong, Ha Thi Vu, Duyen Thi Tran, Thu-Cuc Thi Nguyen
In this research, Molecular Dynamics (MD) simulations were conducted to explore the temperature effect on the microstructure and phase transition of the Ag0.25Au0.75 alloy. The findings reveal that as the temperature rises, the material's phase transition switches from crystalline to liquid and vice versa. Notably, during the phase transition, significant changes occur in the link length (r), the ...... hiện toàn bộ
#Ag0.25Au0.75 alloy #microstructure #molecular dynamics #phase transition #temperature.
Nonlinear dynamic buckling analysis of the FG-GPLRC cylindrical and sinusoid panels with porous core under time-dependent axial compression
- Trang 13-22 - 2024
Nguyen Thi Phuong, Vu Minh Duc, Luu Ngoc Quang
The nonlinear dynamic buckling responses of functionally graded graphene platelet reinforced composite (FG-GPLRC) cylindrical and sinusoid panels with porous core are presented in this paper. The governing formulations are established by applying the nonlinear higher-order shear deformation theory (HSDT). an approximation technique is used to determine the stress function for complexly curved pane...... hiện toàn bộ
#Sinusoid panel; Cylindrical panel; Dynamic buckling; Higher-order shear deformation theory (HSDT); Nonlinear mechanics; Functionally graded graphene platelet-reinforced composite
Prediction of compressive strength of concrete at high heating conditions by using artificial neural network-based Bayesian regularization
Tập 2 Số 1 - Trang 9-21 - 2022
Marijana Hadzima-Nyarko, Son Hoang Trinh
Cement concrete is the most commonly used material today for constructing residential or commercial buildings, industrial parks, or particular components such as tunnel slabs where there is a high risk of fire. This structure requires concrete to be subjected to high temperatures generated by fires. However, concrete under the influence of high temperature has very complex behavior states with def...... hiện toàn bộ
#Machine learning #ANN #compressive strength #Bayesian regularization #K-fold cross-validation
Buckling behavior of spiral stiffened sandwich FGM cylindrical shells with porous core under axial compression using the FSDT
- Trang 1-9 - 2023
Hoang Quan Nguyen, Minh Duc Vu, Thi Phuong Nguyen, Ngoc Ly Le, Thi My Trang Nguyen
The linear buckling behavior of functionally graded cylindrical shells with porous core stiffened by spiral stiffeners under axial compression using the first-order shear deformation theory is presented in this paper. The improved Lekhnitskii’s smeared stiffeners technique is applied for shear deformable spiral FGM stiffeners. Approximate analytical solutions are assumed to satisfy the simply supp...... hiện toàn bộ
#Functionally graded material #Porous core #Spiral stiffener #Linear buckling #Axial compression #Cylindrical shell #First-order shear deformation theory
Ước lượng sức bám giữa FRP và bê tông bằng cách sử dụng các mô hình học máy ANFIS và ANFIS lai Dịch bởi AI
- 2021
Thuy-Anh Nguyen, Hải Bằng Lý
Hệ thống suy diễn mờ dựa trên trí tuệ nhân tạo (ANFIS) và thuật toán tối ưu hóa bầy đàn (PSO) đã được áp dụng để tạo ra các công cụ số dự đoán sức bám giữa bề mặt bê tông và các tấm nhựa gia cố bằng sợi carbon (CFRP). Từ tài liệu liên quan, một cơ sở dữ liệu uy tín bao gồm 242 mẫu thử đã được phát triển, cùng với sáu yếu tố đầu vào chủ yếu xác định sức bám. Những đặc tính này bao gồm chiều rộng củ...... hiện toàn bộ
#sức bám #bê tông #FRP #ANFIS #tối ưu hóa bầy đàn #mô hình học máy