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Measurement of Structural Vibration Through Video Images

Grant number: 09/16072-5
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): February 01, 2010
Effective date (End): January 31, 2011
Field of knowledge:Engineering - Mechanical Engineering - Mechanics of Solids
Principal researcher:Rodrigo Nicoletti
Grantee:Andre Luiz Dutra
Home Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil

Abstract

Structural mechanical vibration is commonly measured through punctual sensors, i.e. sensors that measure the structural behavior at only one point. Examples of such sensors are accelerometers, LVDTs, non-scanning laser vibrometers, and proximity probes. This project aims at developing an acquisition system able to measure the dynamic behavior of a structure as a whole (many points) using only one sensor: a video camera. After video image acquisition, the vibration at specific points of interest is obtained by computer post processing, adopting image processing techniques. The objective is to develop a system able to measure orbits and operational modes of a rotating system in operation.