Development of Micro-indentation Test and the inverse computational Method for determination of the flow curve of elasto-plastic Materials.

• Main Authors: Chia-Yuan Kuo, 郭嘉源
• Other Authors: De-Shin Liu
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/76155993612191354782

碩士 === 國立中正大學 === 機械系 === 92 === Nowadays, it is a tendency to CAE application for the field of biomedicine. However, how to obtain the material properties and formulate the mathematical model is very important for CAE application in biomedicine problem. At present, the nano-indentation testing is the better method to get the material properties for the nonstandard specimen. However, this method could only measure the superficial properties of material. Therefore, it can’t behave primary properties of the material. So the micro-indentation testing that is used for measuring the Young’s modulus of the biomaterial will be developed in this thesis. The Young’s modulus of the articular cartilage is measured about 6.28MPa by this measurement. Using only the young’s modulus is not sufficient for CAE. Furthermore, the flow curve of elasto-plastic materials cannot be obtain by indentation directly. So the inverse computational method for determination of the flow curve of elasto-plastic Materials will be proposed in this thesis. This inverse method is developed based on the load-depth curve measured by continuous indentation test is set up through the FEM and the ANN. This method for bilinear model and multi-linear model has also been already successful established.