Name: Liu, Kai Worked for more than 160 Hours: Yes Contribution to Project: Doctoral candidate working as a graduate research assistant on the project. Working on numerical modeling of the orthogonal micro-cutting process incorporating a non-local law of strain gradient plasticity. Is currently supported on another NSF grant that ends on 03/31/04. Is extending the numerical model developed in t...

Compared with traditional machine tools, the micro tools have advantages of small volume, low cost, less energy consumption, high efficiency and flexibility. Therefore, it is regarded as an important equipment for micro-cutting machining which has been used widely all over world and. As a key component body structure directly influences performance. Thus, integral column base was proposed in th...

In latest years small scale machining has been widely used in advanced engineering applications such as medical and optical devices, micro- nano-electro-mechanical systems. micromachining of metals, a depth cut becomes usually smaller than an average crystal size polycrystalline structure; thus, the cutting process zone can be localized fully indoors single grain. Due to crystallographic anisot...

The tough bulk of dentin in teeth supports enamel, creating cutting and grinding biostructures with superior failure resistance that is not fully understood. Synchrotron-based diffraction methods, utilizing micro- and nanofocused X-ray beams, reveal that the nm-sized mineral particles aligned with collagen are precompressed and that the residual strains vanish upon mild annealing. We show the l...