Shafighfard Torkan, Mieloszyk Magdalena
Institute of Fluid Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80-231 Gdansk, Poland.
Materials (Basel). 2021 Dec 28;15(1):222. doi: 10.3390/ma15010222.
This study investigates the thermo-mechanical behaviour of additively manufactured Carbon Fiber Reinforced Polymer (CFRP) with embedded Fibre Bragg Grating (FBG) sensors with respect to their feasibility for utilising them under thermal loading. This was conducted through the Finite Element Method (FEM) inside an ABAQUS environment. Numerical simulation was complemented by several experimental investigations in order to verify the computational results achieved for the specimens exposed to thermal loading. FBG sensors, incorporated into the material by embedding technique, were employed to measure the strains of the samples subjected to elevated temperatures. It was shown that the strains given by numerical simulation were in good agreement with the experimental investigation except for a few errors due to the defects created within the layers during Additive Manufacturing (AM) process. It was concluded that the embedding FBG sensors were capable of identifying thermo-mechanical strain accurately for 3D-printed composite structures. Therefore, the findings of this article could be further developed for other types of material and loading conditions.
本研究调查了嵌入光纤布拉格光栅（FBG）传感器的增材制造碳纤维增强聚合物（CFRP）在热载荷下的热机械行为，以及在热载荷下使用它们的可行性。这是在ABAQUS环境中通过有限元方法（FEM）进行的。数值模拟辅以多项实验研究，以验证热载荷作用下试样的计算结果。通过嵌入技术将FBG传感器集成到材料中，用于测量高温下样品的应变。结果表明，除了增材制造（AM）过程中层内产生的缺陷导致的一些误差外，数值模拟给出的应变与实验研究结果吻合良好。得出的结论是，嵌入的FBG传感器能够准确识别3D打印复合结构的热机械应变。因此，本文的研究结果可针对其他类型的材料和载荷条件进一步拓展。
