The co-cure manufacturing process effectively merges the various composites parts in wings, fuselage, and frames in aerospace applications. The current study investigates the combined effects of co-cure manufacturing technique and multi-wall carbon nanotubes (MWCNTs) reinforcement on shear strength and fundamental natural frequency of single lap joints (SLJs). In continuation, results were compared with SLJs fabricated through co-bonding and secondary bonding. Shear analysis affirmed that SLJs prepared using co-cure manufacturing technique along with 0.25 wt% MWCNT addition increased the shear strength by 104.25 %, 88.2 % while comparing with co-bonded and secondary bonded joints, respectively. The scanning electron microscopy (SEM) and atomic force microscopy (AFM) indicated uniform dispersion of 0.25 wt% MWCNTs increased the joint strength, deviated crack propagation path, formation of shear bands and uneven surfaces in the adhesive layer. The experimental modal analysis revealed that 0.25 wt% CNT addition with co-cured manufacturing technique enhanced fundamental natural frequency, whereas higher wt.% MWCNT addition increased the damping factor of lap joint due to nanoparticle agglomeration increased the interaction between adhesive and adherend.

共固化制造工艺有效地融合了航空航天应用中机翼、机身和框架中的各种复合材料部件。目前的研究调查了共固化制造技术和多壁碳纳米管 (MWCNT) 增强对单搭接接头 (SLJ) 的剪切强度和基本固有频率的综合影响。继续，将结果与通过共键合和二次键合制造的 SLJ 进行比较。剪切分析证实，与共粘合和二次粘合接头相比，使用共固化制造技术和 0.25 wt% MWCNT 添加量制备的 SLJ 分别将剪切强度提高了 104.25% 和 88.2%。扫描电子显微镜 (SEM) 和原子力显微镜 (AFM) 表明 0.25 wt% MWCNTs 的均匀分散增加了接头强度，裂纹扩展路径偏离、剪切带形成和粘合剂层表面不平整。这实验模态分析表明，使用共固化制造技术添加 0.25 wt% CNT 提高了基本固有频率，而更高 wt.% MWCNT 添加增加了搭接接头的阻尼系数，因为纳米颗粒团聚增加了粘合剂和被粘物之间的相互作用。