Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Development of a High-Speed Camera-Based Software for Characterization of Vibrational Motion in Cardiac Valves
Submission Author:
Ana Raquel Linhares Bello de Araújo , MG
Co-Authors:
Ana Raquel Linhares Bello de Araújo , Vinicius Moreira Cabral, Matheus Carvalho Barbosa Costa, Joao Fleury, Saulo Gonçalves, Artur Avelar, Rudolf Huebner
Presenter: Saulo Gonçalves
doi://10.26678/ABCM.COBEM2023.COB2023-0614
Abstract
The flutter effect is an understudied phenomenon that consists of a structural vibration caused in a structural element by the interaction with a fluid flow. This phenomenon occurring in cardiac valves causes oscillations in the cusps, which is associated with regurgitation, calcification and fatigue, reducing even more their lifetime. The lack of technical and scientific knowledge about flutter is one of the obstacles to the development of more durable prosthetic valves and consequent improvement of the life quality of cardiac patients. Within this context, the present work intends to develop a software to be used in the characterization of the vibrational motion of the cardiac valves’ leaflets using a high-speed camera. The software will later on be implemented in the analyze of images from an experimental bench that simulates the cardiac flow and the behavior of a porcine and a bovine valve, recorded by a high-speed camera. Computer simulations of the valve vibration were used for the software validation. The results were used to obtain information such as the opening area of the valves, the displacement of the leaflets, and the frequencies and amplitudes of the leaflet vibrations. These values were similar to those found in previous works in the area. Therewith, this work developed a tool that will contribute to studies of the flutter phenomenon in the future, in order to enable the creation of more durable prosthetic valves.
Keywords
Flutter, Cardiac valves, high-speed image processing, Computational vision, vibrational motion characterization
