Identification of Upper and Lower Level Yield Strength in Materials

Area of Science:

• Materials Science
• Mechanical Engineering
• Manufacturing Technology

Background:

• Abrasive waterjet (AWJ) cutting is a widely used manufacturing process.
• Understanding the relationship between AWJ process parameters and material mechanical properties is crucial for optimizing cutting performance and predicting material behavior.
• Current methods for determining mechanical properties can be time-consuming and may require destructive testing.

Purpose of the Study:

• To investigate the feasibility of identifying mechanical parameters, specifically upper and lower yield points, through the analysis of surface topography generated by AWJ cutting.
• To develop a novel mathematical-physical model for describing the material deformation process during AWJ cutting.
• To establish a link between surface topography features and material mechanical properties.

Main Methods:

• Development of a new system of interconnected equations to create a comprehensive mathematical-physical model.
• Numerical and graphical representation of the material deformation process during AWJ cutting.
• Validation of the model's predictions against experimental data from tensile tests.

Main Results:

• A novel model was successfully developed to correlate AWJ surface topography with material mechanical properties.
• The model accurately describes the deformation process during AWJ cutting.
• Model results were validated against established tensile testing methods, demonstrating its efficacy.

Conclusions:

• The analytical processing of AWJ surface topography offers a viable method for identifying key mechanical parameters, including yield points.
• The developed mathematical-physical model provides a powerful tool for understanding and predicting material behavior during AWJ machining.
• This research enhances the understanding of the complex interplay between material properties, tool characteristics, and deformation behavior in AWJ processes.