Prof.  Yangui  YU
Wenzhou University / Zhejiang Guangxin Research Institute,  China

Title: Calculation Theories & Models & Methods of Material Behaviors on Damage & Crack in Structures

Abstract:

Biography:

Yu Yangui, a professor at Wenzhou University, and a visiting professor at Zhejiang University of Technology and former Wenzhou Normal University, is engaged in research in two major fields:

1) In the field of mechanical engineering: For multi-cylinder, multi-type, high-thrust reciprocating compressors, a multi-objective, multi-functional mathematical model for optimizing thermodynamic parameters, cylinder combinations, and dynamic data has been proposed. Design calculation programs and software for soft-sensing technology have been developed, and four certificates from the National Intellectual Property Administration have been obtained. These efforts have solved the problem of frequent accidents for over 20 compressors of L-type, H-type, and M-H-type with 6-8 cylinders in multiple chemical plants, achieving practical benefits such as increased production, energy conservation, and consumption reduction.

2) In the scientific fields of material and structural fatigue, damage, and fracture, the concept of genetics in mechanics and engineering, as well as a comprehensive diagram of material behavior, has been proposed. Using mathematical methods, over 100 mathematical models (formulas) have been established for the calculation of strength, damage and crack propagation rates, and life prediction of damaged and cracked components in various stages and throughout the entire process of engineering structures and material behavior in various industries such as aviation, transportation, and machinery. Corresponding calculation methods have been proposed, and theoretical explanations in the physical and geometric senses have been given for each calculation parameter. This has laid a solid foundation for the design calculation and failure analysis of engineering structural components, making the three disciplines of fatigue, damage, and fracture calculable. The numerous mathematical models have also laid a good foundation for the integration of digital software development with artificial intelligence (AI) technology. It will have practical significance for saving a significant amount of experimental time, equipment, manpower, and funds.