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Enhancing Interlaminar Bonding Quality Estimation in Laser-Assisted Fiber Placement of CF/PEKK Composites: A Correction Factor Approach for Improved Prediction of Intimate Contact
Composites Part A: Applied Science and Manufacturing ( IF 8.7 ) Pub Date : 2024-02-17 , DOI: 10.1016/j.compositesa.2024.108095
Ali Barzegar , Sasan Karimi , Hatice S. Sas , Mehmet Yildiz

This study introduces an innovative Modified Mantell and Springer (MMS) model to more accurately assess degree of intimate contact with improved accuracy, which also significantly enhances the subsequent degree of healing estimation and enables the presentation of an improved degree of bonding. Process parameters such as placement speed and consolidation forces, and fiber orientation are identified as key determinants of bonding quality. Lower placement speeds and higher consolidation forces are linked to increased healing and intimate contact between layers, crucial for achieving desired degree of bonding. The MMS model proves effective in capturing the influence of fiber orientation, revealing that [0°/0°] orientation exhibits superior bonding strength. Validation through T-peel tests provides tangible evidence of the model's precision, aligning fracture surface observations with model predictions. This research contributes to a comprehensive understanding and prediction of composite bonding quality, offering valuable insights for optimizing manufacturing processes and enhancing the mechanical performance of composites manufactured with Laser-Assisted Fiber Placement (LAFP).

中文翻译:

增强 CF/PEKK 复合材料激光辅助纤维铺放中的层间粘合质量估计:改进紧密接触预测的校正因子方法

这项研究引入了一种创新的改良曼特尔和施普林格(MMS)模型,可以更准确地评估亲密接触程度,提高准确性,这也显着增强了后续愈合程度的估计,并能够呈现改善的结合程度。诸如放置速度和固结力以及纤维取向等工艺参数被认为是粘合质量的关键决定因素。较低的放置速度和较高的固结力与层间愈合和紧密接触的增加有关,这对于实现所需的粘合程度至关重要。MMS 模型证明可以有效捕捉纤维取向的影响,表明 [0°/0°] 取向表现出优异的粘合强度。通过 T 剥离测试进行的验证提供了模型精度的切实证据,使断裂表面观察结果与模型预测保持一致。这项研究有助于全面了解和预测复合材料粘合质量,为优化制造工艺和提高激光辅助纤维铺放 (LAFP) 制造的复合材料的机械性能提供宝贵的见解。
更新日期:2024-02-17
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