1. Department of Mechanical Engineering, South Dakota State University, Crothers Engineering Hall 338, Brookings, SD 57007 e-mail:
2. Mem. ASME
Department of Mechanical Engineering, South Dakota State University, Crothers Engineering Hall 356, Brookings, SD 57007 e-mail:
3. Department of Agricultural
and Biosystems Engineering, South Dakota State University, Agricultural Engineering Hall 115, Brookings, SD 57007 e-mail:
4. Mem. ASME
Department of Mechanical Engineering, South Dakota State University, Crothers Engineering Hall 254, Brookings, SD 57007 e-mail: