Article
Engineering, Mechanical
Paolo Livieri
Summary: This paper presents a study on the fatigue behavior of hot riveted joints using experimental and numerical analysis. The experimental data showed discrepancies with the Eurocode standards. The numerical analysis revealed that friction force reduces the stress range and stress concentration on the rivets is crucial for the distribution of stress at the net section.
Article
Engineering, Mechanical
Shi Wang, Jianfei Fan, Hechang Li, He Wang, Zhouyuan Lan, Jianhua Liu, Jinfang Peng, Minhao Zhu
Summary: This study investigates the damage evolution and failure of single-lap riveted joints and adhesive-riveted hybrid joints in carbon fiber-reinforced plastic (CFRP). The results show that a slight increase in load significantly decreases the service life due to the elevated temperature caused by load increment. Without adhesive bonding, the damage at the lap plate interface is similar under both types of loads, with worse damage observed on the hole wall compared to the contact interface. The addition of adhesive enhances the fatigue performance of CFRP riveted joints and reduces the sensitivity of the structure to external excitation loads.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Mechanical
He Wang, Hechang Li, Yue Zhao, Xuetong Liu, Jinfang Peng, Jianhua Liu, Minhao Zhu
Summary: This study quantitatively describes the fatigue failure process of aluminium alloy riveted single-shear lap joints by analyzing the dynamic response. Firstly, a numerical analysis method based on MATLAB is proposed to calculate the cyclic relative displacement amplitude, stiffness, and dissipated energy. Secondly, the service behavior corresponding to the evolution of relative displacement amplitude and dissipated energy is analyzed and verified through finite element simulation. Finally, the cycles corresponding to crack initiation, slow and rapid propagation are calculated and verified by observing crack growth propagation through interruption tests based on the evolution of cyclic compression stiffness.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Engineering, Mechanical
He Wang, Hechang Li, Yue Zhao, Xuetong Liu, Jinfang Peng, Liping He, Jianhua Liu, Minhao Zhu
Summary: The fatigue life, damage evolution process, and fatigue fracture behaviour of an aluminium alloy single shear lap joint riveted by a swage-locking pin were studied through a fatigue test. Various equipment, including optical microscope, scanning electron microscope, electron probe microanalyzer, and three-dimensional white light interferometry, were used to study the characteristics and area of debris at the interface of the lap-plate under different cycles. Two fatigue failure modes of the joint were observed under different fatigue loads. Micro-cracks were generated in the contact area under fretting wear, with the highest maximum principal stress at the crack source.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Engineering, Mechanical
Yue Zhao, He Wang, Hechang Li, Jifan He, Yan Zhou, Jianhua Liu, Jinfang Peng, Minhao Zhu
Summary: Fatigue tests were conducted on Al alloy-CFRP single-shear lap riveted joints and adhesive-riveted hybrid joints to investigate their failure mechanisms under different loads. The study considers the effect of heat accumulation caused by interfacial friction on joint competitive failure. Results show that the Al-CFRP joint experiences competitive fretting fatigue, and the failure modes of heterogeneous joints are influenced by the sensitivity of mechanical properties to external environment changes. The presence of adhesive slows down interfacial wear, enhancing the joint's life by 500% under lower loads, but fails to prevent temperature rise and only improves life by 80% under higher loads.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Materials Science, Multidisciplinary
Qingxiao Liang, Tianpeng Zhang, Chunrun Zhu, Yunbo Bi
Summary: This paper establishes a three-dimensional finite element model to simulate the effects of different riveting angles and directions on the connection quality and fatigue performance of single-rivet lap joints, and analyzes the key influencing factors on riveting quality.
Article
Engineering, Mechanical
Zhou Yang, Ruisong Jiang, Yangjie Zuo
Summary: A riveting method with a gasket was developed for CFRP/CFRP joints. The study evaluated the riveting damage behaviors and conducted a parametric study of the rivet rod length. Results showed that the damage mainly occurred near the rivet deformed head, due to excessive deformation of the rivet tail. Using an appropriate gasket significantly reduced riveting damage and enhanced the joining strength of the composite specimen. This paper provided a useful joining method for aircraft composite structures.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Engineering, Mechanical
Jan Papuga, Jiri Stejskal
Summary: This paper discusses the differences in fatigue lifetimes of identical series of riveted double-shear lap joints produced by two different companies. Despite the applied riveting force being different, the differences in fatigue performance were obvious for both blind and full rivets. The analysis points to incomplete deburring and lower pre-stress as the most likely reasons for the inferior fatigue lives in the riveted joints.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Mechanics
Hanyu Zhang, Lei Zhang, Zhouzhou Song, Ping Zhu
Summary: This paper proposes an innovative method to predict the uncertainty of the mechanical properties of hybrid joints (HJs) considering the structural multiscale characteristic, and validates the effectiveness of this method through experiments. Furthermore, the proposed uncertainty propagation framework allows for global sensitivity analysis to identify crucial variables influencing the mechanical properties.
COMPOSITE STRUCTURES
(2023)
Article
Chemistry, Physical
Jan Godzimirski, Marek Roskowicz, Michal Jasztal, Iga Barca
Summary: The purpose of this study was to analyze the impact of different mechanical fastener types on the static strength and failure mechanism of lap joints in composite elements, as well as the effect of supplementing these joints with adhesive joints under fatigue load. Computed tomography technology was used to observe damage in the composite joints. The study found that partial damage to the hybrid joint does not increase the load on the fasteners or impair the joint's fatigue life, and the two-stage destruction of the hybrid joint enhances the safety of aircraft structures.
Article
Engineering, Civil
Jun Xu, Zhile Zhang, Taotao Wu
Summary: This study investigated the fatigue process of riveted joints in steel truss bridges, including fatigue details, fatigue propagation stages, and crack propagation models. The results showed that the fatigue life corresponding to hole edge crack fatigue detail category is shorter than that to the plate surface crack, and crack propagation life decreases with increasing load and decreasing load ratio.
Article
Engineering, Chemical
Andrzej Komorek, Jan Godzimirski
Summary: This study conducted impact strength experiments on lap joints using a modified pendulum hammer testing device, demonstrating greater repeatability with lap specimens. It was also shown that hybrid connections had a higher impact strength than the combined strengths of adhesive and rivet joints, and that impact speed and adhesive forces significantly influenced the impact strength of glued joints.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2021)
Article
Materials Science, Multidisciplinary
Changyi Lei, Qinggai Huang, Yunbo Bi
Summary: The study shows that an appropriate squeezing displacement combination can make the tensile load distribution of riveted lap joints more uniform and reduce structural deformation magnitude. In some cases, the maximum strain value can be reduced by about 53.22-79.76%.
Article
Engineering, Mechanical
He Wang, Hechang Li, Jianfei Fan, Xuetong Liu, Jinfang Peng, Liping He, Jianhua Liu, Minhao Zhu
Summary: Fatigue tests were conducted on Al alloy-CFRP riveted single-shear lap joints. Dynamic response signals were processed to study the relationship between displacement, stiffness, dissipated energy, and different failure behaviors, revealing the evolution of service state and fatigue failure process. Results showed that higher load amplitudes altered the interface slip state, increasing the dissipated power. The weak point of the joint shifted from the aluminium alloy lap plate to the CFRP lap plate, reflected in the change of failure mode.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Engineering, Civil
Adam Korbel
Summary: This paper presents research on the effect of riveting process parameters on residual stresses, clamping stresses and clamping force in thin sheet riveted joints. The results show that these stresses and forces affect the fatigue crack initiation site and path in riveted joints.
THIN-WALLED STRUCTURES
(2022)
