Letchumanan Shaktivell M, Tajul Arifin Ahmad Mubarak, Taib Ishkrizat, Rahim Mohammad Zulafif, Nor Salim Nor Adrian
Faculty of Mechanical Manufacturing and Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat Johor, 86400 Malaysia.
J Fail Anal Prev. 2021;21(6):2038-2063. doi: 10.1007/s11668-021-01287-4. Epub 2021 Nov 19.
Carbon Fiber Reinforced Polymer (CFRP) was designed, simulated, and evaluated as a wrapping material on defected pipe using computational approach. This composite material was considered as a unique wrapping material as it may have the combined characteristics of the constituents or have substantially different properties than the individual constituents. Specifically, this research evaluates the capability of CFRP as a wrapper through SolidWorks Simulation using the static analysis, computational fluid dynamics analysis, and data analysis. This approach gives a preliminary consideration and justification on choosing the optimized lamination orientation of CFRP in real cases based on the simulated data. Various orientations were simulated and analyzed throughout this research. Based on all the simulation analysis, the CFRP wrapper with quasi-isotropic lamination with the 8 plies orientation was seen most effective in reducing the stress and possess highest minimum safety factor at the fully defected region (100 × 100 × 7.11 mm thru) after the repair. Eventually, this optimized CFRP lamination orientation, proved that it was able to withstand pressures ranging between 0.86 to 19.6 MPa with a layer thickness in between 0.16 up to 3.76 mm. Based on the static analysis, this optimized laminated orientation of CFRP indeed showed that it was able to reduce the stress on an average of 94.10% after the repair was done. Relatively, CFRP was 0.2% higher in reducing the maximum stress at the defected region at the pipe, than the Glass Fiber Reinforced Polymer with the same orientation. Additionally, the flow simulation analysis in SolidWorks showed that fluid flow was undisrupted after the repair was done, and the wrapped region was resistant to any fluid leakages.
采用计算方法对碳纤维增强聚合物(CFRP)作为缺陷管道的缠绕材料进行了设计、模拟和评估。这种复合材料被视为一种独特的缠绕材料,因为它可能具有成分的组合特性,或者具有与单个成分显著不同的性能。具体而言,本研究通过SolidWorks模拟,利用静态分析、计算流体动力学分析和数据分析,评估了CFRP作为缠绕材料的性能。这种方法基于模拟数据,为在实际案例中选择CFRP的优化层压取向提供了初步考虑和依据。在整个研究过程中,对各种取向进行了模拟和分析。基于所有模拟分析,在修复后的完全缺陷区域(100×100×7.11毫米贯穿),具有8层准各向同性层压取向的CFRP缠绕层在降低应力方面最为有效,并且具有最高的最小安全系数。最终,这种优化的CFRP层压取向证明能够承受0.86至19.6兆帕的压力,层厚在0.16至3.76毫米之间。基于静态分析,这种优化的CFRP层压取向在修复后确实能够平均降低94.10%的应力。相对而言,在降低管道缺陷区域的最大应力方面,CFRP比相同取向的玻璃纤维增强聚合物高0.2%。此外,SolidWorks中的流动模拟分析表明,修复后流体流动未受干扰,并且包裹区域能够防止任何流体泄漏。