Laser Self-Mixing Interference: Optical Fiber Coil Sensors for Acoustic Emission Detection
نویسندگان
چکیده
Acoustic emission (AE) testing is a widely used nondestructive method for the early detection of failures in materials and structures. In this paper, an AE sensor combining optical fiber sensing with laser self-mixing interference (SMI) technology proposed. A multi-coil ring wound round cylindrical acrylic skeleton was designed order to sense deformation caused by elastic waves, which then demodulated using technology. Finite element analyses were conducted investigate under acoustic sources. signals induced via ball-dropping impact experiments successfully detected proposed experimental system. The SMI system has advantages being free from electromagnetic having simple structure, low implementation cost high measurement resolution sensitivity.
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ژورنال
عنوان ژورنال: Photonics
سال: 2023
ISSN: ['2304-6732']
DOI: https://doi.org/10.3390/photonics10090958