The following reference works are cited in this example problem:
Zhu, X. K. & Chao, Y. J. (2004). Numerical simulation of transient temperature and residual stresses in friction stir welding of 304L stainless steel. Journal of Materials Processing Technology. 146(2), 263-272.
Chao, Y.J., Qi, X., & Tang, W. (2003). Heat transfer in friction stir welding - Experimental and numerical studies. Journal of Manufacturing Science and Engineering-Transactions of the ASME. 125(1), 138-145.
Prasanna, P., Rao, B. S., & Rao, G. K. (2010). Finite element modeling for maximum temperature in friction stir welding and its validation. Journal of Advanced Manufacturing Technology. 51, 925-933.
Sorensen, C.D. & Nelson, T. W. (2007). Friction stir welding of ferrous and nickel alloys. (Mahoney, M. W. & Mirsha, R. S. Eds.) Friction Stir Welding and Processing. Materials Park, OH: ASM International. 111-121.
Ozel, T., Karpat, Y., & Srivastava, A. (2008). Hard turning with variable micro-geometry PcBN tools. CIRP Annals - Manufacturing Technology. 57, 73-76.
Mishra, R. S. (2007). Friction Stir Welding and Processing. Ed. R. S. Mishra and M. W. Mahoney. Materials Park, OH: ASM International.