Article
Mechanics
Felice Rubino, Hetal Parmar, Tommaso Mancia, Pierpaolo Carlone
Summary: A glass fiber/polypropylene semi-impregnated lamina was added to improve the weldability of an epoxy laminate. Ultrasonic welding of the hybrid composite was performed with varying welding parameters, resulting in different lap-shear strengths and weld interface qualities. The welding time had a significant influence on the intermixing of the thermoplastic layer and the formation of a strong weld area, while the amplitude and pressure mainly affected the power absorption and overall welding performance.
COMPOSITE STRUCTURES
(2023)
Review
Engineering, Manufacturing
Yaqiong Wang, Zhenghua Rao, Shengming Liao, Fengjiang Wang
Summary: This paper presents the current understanding of the ultrasonic welding of fiber reinforced thermoplastic composites, focusing on weldability, welding quality, and underlying mechanisms in acoustic transmission, heat generation, and joint formation. Challenges in understanding this technique include special physical properties due to fibrous fillers, interphase interaction under ultrasonic energy, and melting and molecular inter-diffusion at the interface.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Review
Engineering, Manufacturing
Zeguang Liu, Yang Li, Zhiwei Liu, Yuanduo Yang, Yiang Li, Zhen Luo
Summary: With the increasing application of fiber-reinforced thermoplastic (FRTP) in the industry, researchers are focusing on metal/FRTP hybrid structures welding. Ultrasonic welding is an efficient and cost-effective method for metal/FRTP dissimilar joining. The current understanding of metal/FRTP ultrasonic welding is summarized in this paper from four aspects: welding process, joining mechanism, mechanical properties, and galvanic corrosion.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Materials Science, Composites
Agni K. Biswal, Ankush Nandi, Hung Wang, Aniruddh Vashisth
Summary: This investigation reveals that glass and carbon fiber-reinforced vitrimer composites can be effectively welded using ultrasonic energy. Ultrasonic welding offers a practical and cost-effective alternative to oven curing, with reduced energy and time requirements for assembling complex parts. It also highlights the superior welding performance of carbon fiber-based composites and the influence of catalyst concentration on weld strength.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Polymer Science
Sarianna Palola, Pekka Laurikainen, Sonia Garcia-Arrieta, Egoitz Goikuria Astorkia, Essi Sarlin
Summary: This study explores the feasibility of reclaiming carbon fibers from aeronautical scrap material using conventional and reactive pyrolysis, and evaluates their potential use in automotive structural components. The results show that recycled carbon fibers can meet the required deformation limits and offer lower production costs and greener composites.
Article
Engineering, Manufacturing
Madeline Kirby, Armaghan Naderi, Genevieve Palardy
Summary: Ultrasonic consolidation (USC) is a promising method for manufacturing high-performance composites. This study focuses on USC of dry carbon fiber fabrics with high-temperature polyphenylene sulfide films. A 2D finite element model was developed to predict the thermal behavior during consolidation, and it showed good agreement with experimental results. The study also identified optimal welding time values and highlighted the importance of residence time in achieving better consolidation. X-ray diffraction characterization revealed that the USC process resulted in mostly amorphous PPS due to high cooling rates. Overall, the study confirms the feasibility of USC for layered composites.
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME
(2023)
Article
Materials Science, Composites
Ping Liu, Yucheng Zhong, Qing-Xiang Pei, Viacheslav Sorkin, Yong-Wei Zhang
Summary: Short fiber reinforced thermoplastic composites have gained significant interest for their low density, high strength, environmental resistance, and low cost. Optimizing internal structures to maximize mechanical properties is crucial. Increasing the weight fraction of linkage material can enhance the mechanical properties of SFRTPCs.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Jing Wang, Cunyong Xiao, Song Jia, Rong Ren, Xuhai Xiong
Summary: This study investigated the failure modes of ultrasonic welding joints using glass fiber/polyetherimide (PEI) composite material as the base material. The mechanism of welding pressure with different failure modes and the effects of failure modes on joint strength were explored. The results showed that there are six failure scenarios for ultrasonic welding joints including peeling of PEI film, peeling of surface fiber, laminate delamination, fiber breakage, and ablation damage. The proportion of failure modes is mainly influenced by welding pressure. The welding joint failure is often a mixed failure generated by the coupling of multiple failure modes. Heat distribution during welding was simulated using COMSOL, demonstrating the evolution of weld interface temperature at different positions.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Multidisciplinary
Tian Zhao, Quanyue Zhao, Wenwang Wu, Li Xi, Ying Li, Zhishuai Wan, Irene Fernandez Villegas, Rinze Benedictus
Summary: The research aims to improve the manufacturing efficiency and weld attributes of ultrasonic spot welded joints by adopting proper sonotrodes combined with process control techniques. It was conducted in two steps, first using sonotrodes with different diameters for single-spot ultrasonic welding, then proposing a simultaneous spot welding technique for two welded spots. Results showed that increasing sonotrode size and using proper welding force can significantly enhance welding efficiency and attributes.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Polymer Science
Goram Gohel, Chun Zhi Soh, Kah Fai Leong, Pierre Gerard, Somen K. Bhudolia
Summary: This research focuses on the optimization of ultrasonic welding of carbon/epoxy composite and carbon/ Elium(R) composite using a PMMA coupling interlayer. The results show that the welding strength can be significantly improved by creating a PMMA coupling layer on the epoxy composite adherend. The welding time can be reduced to 2s compared to the 10 min required for adhesive bonding. The investigation also reveals the characteristics of the fracture surface for the configuration with maximum lap shear strength. This research presents a way to join Elium(R) with epoxy composites and has potential applications in sporting goods and consumer products.
Review
Materials Science, Composites
Lijuan Jiang, Yinzhi Zhou, Fengnian Jin
Summary: This review introduces the manufacturing methods of short fiber-reinforced thermoplastic composites, analyzes the stress transfer and damage mechanisms, and discusses the factors affecting their mechanical properties. The review also discusses the commonly used mixture rules for predicting elastic modulus and strength. Overall, this review provides literary support for the future development of short fiber-reinforced thermoplastic composites.
POLYMER COMPOSITES
(2022)
Article
Polymer Science
Jian Shi, Mamoru Mizuno, Limin Bao, Chunhong Zhu
Summary: A new molding method for C-FRTP has been developed to fabricate void-free composites with perfect mechanical properties. The study found that using pre-impregnated materials and a thermoplastic matrix with reduced viscosity can increase the fiber volume fraction of C-FRTP and enhance its tensile and flexural properties to the same level as C-FRP.
Article
Polymer Science
Peipei Li, Jie Ma, Libo He, Shizhe Wu, Peiquan Yang, Lihui Zhao, Yagang Zhang, Yabin Zhu, Hongsheng Tan
Summary: Continuous glass fiber reinforced polylactic acid thermoplastic composites were prepared using the pultrusion process. The effects of processing temperature, tension, traction speed, and CGF weight content on the tensile strength were studied and optimized. The results showed that the highest tensile strength and storage modulus were achieved at a processing temperature of 220℃, tension force of 11 N, traction speed of 3 r/min, and CGF content of 40.0 wt.%. The study demonstrated the potential of pultrusion fabrication strategy for the low-cost and high-strength production of CGF/PLA composites.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Miguel A. R. Pereira, Ivan Galvao, Jose Domingos Costa, Ana M. Amaro, Rui M. Leal
Summary: The objective of this paper is to demonstrate the potential of friction stir welding and its variants in joining fiber-reinforced thermoplastic polymer composites. The influence of welding parameters and methods to reduce defects are discussed.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Environmental
Savvina Chortarea, Ogul Can Kuru, Woranan Netkueakul, Marco Pelin, Sandeep Keshavan, Zhengmei Song, Baojin Ma, Julio Gomes, Elvira Villaro Abalos, Luis Augusto Visani de Luna, Thomas Loret, Alexander Fordham, Matthew Drummond, Nikolaos Kontis, George Anagnostopoulos, George Paterakis, Pietro Cataldi, Aurelia Tubaro, Costas Galiotis, Ian Kinloch, Bengt Fadeel, Cyrill Bussy, Kostas Kostarelos, Tina Buerki-Thurnherr, Maurizio Prato, Alberto Bianco, Peter Wick
Summary: This study conducted a comprehensive investigation on the potential biological effects of particles released from graphene-reinforced composites. The results showed that exposure to PA6-rGO induced mild and transient pulmonary inflammation, while exposure to rGO induced longer-lasting moderate inflammation. Overall, the study suggests a negligible impact on human health under acute exposure conditions of graphene-related materials.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
