In the line of success of the eight previous International Conferences on the Acoustics and Vibration which were highly welcomed and recognized by scientists, experts and students; it is now our honor to announce that the 9th International Conference of Acoustics and Vibration, ISAV2019, will be jointly held by Iranian Society of Acoustics and Vibration (ISAV) and Iran University of Science and Technology (IUST) in Dec. 2019 in Tehran. This event provides an excellent opportunity for the experienced scientists, researchers and engineers, from the community, to share their latest scientific achievements and technological developments in different areas of the Acoustics and Vibrations.  This event is organized to cover different programs including keynote and plenary speeches, oral and poster paper presentations, exhibition, technical workshops, and different student competitions. On behalf of the ISAV2019 organizing committee, it is a great pleasure for me to invite you to participate in this international event. We look forward to seeing you in Tehran at ISAV2019.

Sincerely yours

Davood Younesian

ISAV 2019, Conference Chairman