Inverse problems occur in a wide variey of fields. Ingeneral, the inverse problem can be defined as one where oneshould estimate the cause from the result, while the directproblem is concerned with how to obtain the result from thecause. The aim of this symposium was to gather scientistsand researchers in engineering mechanics concerned withinverse problems in order to exchange research result anddevelop computational and experimentalapproaches to solveinverse problems.The contributions in this volume cover the followingsubjects: mathematical and computational aspects of inverseproblems, parameter or system identification, shapedetermination, sensitivity analysis, optimization, materialproperty characterization, ultrasonic nondestructivetesting, elastodynamic inverse problems, thermal inverseproblems, and other miscellaneous engineering applications.