The 2nd International Symposium on Digital Manufacturing (ISDM 2009) 10-11th September 2009, Wuhan, China ISDM is the symposium presenting the state of the art and future perspectives of digital manufacturing science and technologies,where industry experts, researchers, and academics share ideas and experiences in developing digital manufacturing, as well as discuss various issues, such as the frontier theories and technologies, breakthrough and innovative solutions and applications faced by the digital manufacturing world. ISDM 2009 will be held on 10-11th September in Wuhan, the capital city of Hubei province, China. It is a successor of the 1st International Symposium on Digital Manufacture (ISDM 2006, Wuhan, China, Oct. 2006), and organized by Wuhan University of Technology, China, Manufacturing Engineering Centre, Cardiff University, UK, and the International Society for Digital Manufacturing, UK Papers related digital manufacturing are invited. Topics include but are not limited to the