International Acoustic Emission Symposium (IAES) has been held biennially since 1972. This Symposium is more than 40-year-old, long history in Acoustic Emission (AE) field. The principal objective of the IAES is the interchange of global information on AE between many researchers and engineers. The Japan Society for Non-Destructive Inspection (JSNDI) has hosted the symposia. Topics to be discussed at IAES will cover all the areas of AE testing, including: Industries, Machine Engineering, Medical Science, Civil Engineering, Material Science, Geo-Resource Engineering, Signal Processing, Sensor System and so on.