Measurement of Young's Modulus of Metallic Materials Based on Fiber Bragg Grating

Young's modulus, as an important parameter in material mechanics, plays an important role in engineering design and teaching research. Fiber Bragg grating, as the most popular optical sensor device, has outstanding advantages such as high sensitivity and strong anti-interference. Therefore, this article uses 42CrMo alloy steel as the measurement material. A design method for measuring the Young's modulus of metallic materials using fiber Bragg gratings and pressure sensors is proposed. The Young's modulus of the metal to be tested is obtained through experiments. And compared with the Young's modulus of standard materials. The design method is simple and the measurement accuracy is high.