Date of Graduation
Statler College of Engineering and Mineral Resources
Mechanical and Aerospace Engineering
Various types of indentation methods have been used for the determination of mechanical properties of material; nevertheless, conventional indentation test units are restricted by the geometry of the samples. It is difficult to obtain the mechanical properties from non-flat surface objects. In this research, based on an in-house developed load-based micro-indentation test method, a suitable flexible micro-indentation system was developed to determine material mechanical properties such as hardness and elastic modulus of test samples with arbitrary surface geometry.;The focus is in developing a flexible micro-indentation unit. Due to nonlinearity of the system compliance and possible change of indentation direction during testing, an in-situ calibration methodology is developed to obtain the correct mechanical properties of the testing material. To validate the capability of the flexible micro-indentation instrument, aluminum 6061, bronze 932 and H13 tool steel were tested with various indentation arm lengths and angles such as 0°, 30°, 45°, 60° and 90° for Young's modulus measurement. In each case, the data were reprocessed with the in-situ calibration method and accurate results were obtained.
Chou, Chia-Nung, "Development of a Flexible Load-Based Micro-Indentation System" (2011). Graduate Theses, Dissertations, and Problem Reports. 2247.