On the Impact Test Methodology for the Quick Estimation of Natural Frequency of the Mechanical Systems - Trang 191-201 - 2021
Dang, Phuoc Vinh, Vo, Nhu Thanh, Le, Hoai Nam, Pham, Anh Duc, Ngo, Thanh Nghi, Doan, Le Anh
The identification of natural frequency of machinery is a very important phase during the design, fabrication and testing process of any mechanical systems. This paper represents the experimental methodology for quick determining of natural frequency of a system by...
Full-Scale Self-propulsion Computations Using Body Force Propeller Method for Series Cargo Ship 12500DWT - Trang 851-859 - 2021
Chuan, Tran Quoc, Phuong, Nguyen Kim, Ha, Nguyen Thi Hai, Ngoc, Vu Minh, Tu, Tran Ngoc
The paper presents a results of study the full-scale self-propulsion characteristic for series cargo ship 12500DWT built in Vietnam based on the unsteady RANSE method with Body Force Propeller method. Two case studies were analyzed: propeller open-water, and...
A Parametric Study on Product Quality During Forward-Reverse Extrusion Process - Trang 83-89 - 2023
Thi, Thu Nguyen, Nguyen, Minh-Quan, Minh, Nguyen Thi Hong
Forward-reverse extrusion is a common method in the manufacture of transmission components that require high strength and rigidity. This is a method that helps the metal to deform in two directions: forward and reverse directions compared to the punch movement....
Optimization of Predicting Spring-Back When V-Bending for SS400 Steel Plate - Trang 118-125 - 2021
Hai, Vuong Gia, Minh, Nguyen Thi Hong, Van Quy, Hoang, Toan, Nguyen Duc
In this paper, the Taguchi method and regression analysis used to evaluate the influence of technological parameters: punch radius, temperature and punch stroke to the spring-back angle after V-bending for SS400 steel plate output. The experiments were designing with...
Combustion Characteristics of DA465QE Engine Fueled with HHO Enriched Biogas - Trang 253-261 - 2023
Vo, Anh Vu, Bui, Thi Minh Tu, Huynh, Tan Tien, Tan, Thong Ngo
This paper presents the results of a numerical simulation of the performance of the DA465QE engine and the impact of adding HHO to biogas on its efficiency and pollutant emissions. The results showed that at a given operating condition, an increase in HHO and CH4...