Laser Self-Mixing Sensor for Simultaneous Measurement of Young’s Modulus and Internal Friction
The Young’s modulus and internal friction are two important parameters of materials. Self-mixing interferometry (SMI) is an emerging non-destructive sensing method that has been employed for various applications because of its advantages of simple structure, ease of alignment and high resolution. So...
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MDPI AG
2021-12-01
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| Online Access: | https://www.mdpi.com/2304-6732/8/12/550 |
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| author | Bo Wang Bin Liu Lei An Pinghua Tang Haining Ji Yuliang Mao |
| author_facet | Bo Wang Bin Liu Lei An Pinghua Tang Haining Ji Yuliang Mao |
| author_sort | Bo Wang |
| collection | DOAJ |
| description | The Young’s modulus and internal friction are two important parameters of materials. Self-mixing interferometry (SMI) is an emerging non-destructive sensing method that has been employed for various applications because of its advantages of simple structure, ease of alignment and high resolution. Some recent works have proposed the use of SMI technology to measure the Young’s moduli and/or internal frictions by measuring the resonance frequencies and damping factors of specimen vibrations induced by impulse excitation. However, the measurement results may be affected by frequencies of SMI fringes, and the implementation requires extra signal processing on SMI fringes. In this work, we developed an all-fiber SMI system without SMI fringes to measure the Young’s modulus and internal friction simultaneously. Simulations and experiments were carried out to verify the feasibility of the proposed method. Two specimens of brass and aluminum were tested. The experimental results show that the standard deviations of Young’s moduli for brass and aluminum are 0.20 GPa and 0.14 GPa, and the standard deviations of internal frictions are <inline-formula><math display="inline"><semantics><mrow><mn>4.0</mn><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>5</mn></mrow></msup></mrow></semantics></math></inline-formula> and <inline-formula><math display="inline"><semantics><mrow><mn>5.4</mn><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>5</mn></mrow></msup></mrow></semantics></math></inline-formula>, respectively. This method eliminates the influences of the SMI fringe frequency on the resonant frequency and requires no signal processing on SMI fringes, contributing to its simplicity as a method for the measurement of the Young’s modulus and internal friction. |
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| spelling | doaj.art-d9a83718ef354f849748d2e968730e352023-11-23T10:08:44ZengMDPI AGPhotonics2304-67322021-12-0181255010.3390/photonics8120550Laser Self-Mixing Sensor for Simultaneous Measurement of Young’s Modulus and Internal FrictionBo Wang0Bin Liu1Lei An2Pinghua Tang3Haining Ji4Yuliang Mao5School of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, ChinaSchool of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, ChinaSchool of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, ChinaSchool of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, ChinaSchool of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, ChinaSchool of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, ChinaThe Young’s modulus and internal friction are two important parameters of materials. Self-mixing interferometry (SMI) is an emerging non-destructive sensing method that has been employed for various applications because of its advantages of simple structure, ease of alignment and high resolution. Some recent works have proposed the use of SMI technology to measure the Young’s moduli and/or internal frictions by measuring the resonance frequencies and damping factors of specimen vibrations induced by impulse excitation. However, the measurement results may be affected by frequencies of SMI fringes, and the implementation requires extra signal processing on SMI fringes. In this work, we developed an all-fiber SMI system without SMI fringes to measure the Young’s modulus and internal friction simultaneously. Simulations and experiments were carried out to verify the feasibility of the proposed method. Two specimens of brass and aluminum were tested. The experimental results show that the standard deviations of Young’s moduli for brass and aluminum are 0.20 GPa and 0.14 GPa, and the standard deviations of internal frictions are <inline-formula><math display="inline"><semantics><mrow><mn>4.0</mn><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>5</mn></mrow></msup></mrow></semantics></math></inline-formula> and <inline-formula><math display="inline"><semantics><mrow><mn>5.4</mn><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>5</mn></mrow></msup></mrow></semantics></math></inline-formula>, respectively. This method eliminates the influences of the SMI fringe frequency on the resonant frequency and requires no signal processing on SMI fringes, contributing to its simplicity as a method for the measurement of the Young’s modulus and internal friction.https://www.mdpi.com/2304-6732/8/12/550self-mixing interferometryoptical feedback interferometryYoung’s modulusinternal frictionlaser diodelaser sensor |
| spellingShingle | Bo Wang Bin Liu Lei An Pinghua Tang Haining Ji Yuliang Mao Laser Self-Mixing Sensor for Simultaneous Measurement of Young’s Modulus and Internal Friction Photonics self-mixing interferometry optical feedback interferometry Young’s modulus internal friction laser diode laser sensor |
| title | Laser Self-Mixing Sensor for Simultaneous Measurement of Young’s Modulus and Internal Friction |
| title_full | Laser Self-Mixing Sensor for Simultaneous Measurement of Young’s Modulus and Internal Friction |
| title_fullStr | Laser Self-Mixing Sensor for Simultaneous Measurement of Young’s Modulus and Internal Friction |
| title_full_unstemmed | Laser Self-Mixing Sensor for Simultaneous Measurement of Young’s Modulus and Internal Friction |
| title_short | Laser Self-Mixing Sensor for Simultaneous Measurement of Young’s Modulus and Internal Friction |
| title_sort | laser self mixing sensor for simultaneous measurement of young s modulus and internal friction |
| topic | self-mixing interferometry optical feedback interferometry Young’s modulus internal friction laser diode laser sensor |
| url | https://www.mdpi.com/2304-6732/8/12/550 |
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