Details

Autor(en) / Beteiligte

• Livens, Pieter
• Ukshini, Enis
• Dirckx, Joris J.J.

Titel

Measuring the motion of the eardrum using Digital Image Correlation

Ist Teil von

• Journal of physics. Conference series, 2024-02, Vol.2698 (1), p.12024

Ort / Verlag

Bristol: IOP Publishing

Erscheinungsjahr

2024

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Abstract The human eardrum is a translucent curved membrane and is in direct contact with the middle ear bones. Studying this complicated biomechanical system remains challenging. Digital image correlation (DIC) is an optical technique that allows measuring the shape and displacement of curved surfaces in 3D. In this work, we discuss the advantages and disadvantages of using DIC to study the eardrum at frequencies around 1 kHz. Special attention is given to the application of speckle patterns required to perform DIC on the translucent eardrum. Additionally, we detail an alternative approach to high-speed cameras: phase-locked light pulses. Using light pulses synced to the phase of the sound, regular DIC cameras can be used at their full resolution. This enables a high spatial resolution to thoroughly investigate the motion of the eardrum at the relevant frequencies.