Article
Materials Science, Multidisciplinary
Suwon Kim, PilGong Choi, Soo Jin Choi, Sang Bae Han, Jiyeon Choi, Jeng O. Kim, Hyonkee Sohn, Sanghoon Ahn, Jiwhan Noh, Heeshin Kang, Kwangyun Jung, Dohyun Kim, Hyun-Deok Kim, Changkyoo Park
Summary: A dual laser beam joining process is introduced to join dissimilar plastics. By applying two different diode lasers with central wavelengths of 980 and 1940 nm, PMMA/PC-1 and PC-2/ABS joints were obtained. Experimental results showed a decrease in tensile shear force with increasing laser power of the 1940 nm laser beam. Only the dual laser beam joining process using the 1940 nm laser beam at the smallest laser power showed relatively higher tensile shear force compared to the single laser beam joining process using the 980 nm laser beam. The joining properties were found to be correlated with the transmission values of PMMA and PC-2 at the wavelength of 980 nm.
KOREAN JOURNAL OF METALS AND MATERIALS
(2022)
Article
Polymer Science
Wei Liao, Suning Zhao, Ming Gao
Summary: By introducing beam oscillation, the bonding strength between polymers and metals can be significantly improved. Beam oscillation helps eliminate or reduce interface defects, resulting in increased tensile shear force and plasticity of the joint.
Article
Metallurgy & Metallurgical Engineering
Klaus Schricker, Jean Pierre Bergmann, Marcus Hopfeld, Lothar Spiess
Summary: This study investigated the mechanical properties of the joint between semi-crystalline polyamide 6 and aluminum EN AW 6082 in laser-based joining, finding that an increase in energy per unit length led to reduced crosshead displacement and decreased fatigue strength in short-term testing. Further material testing and analysis revealed that heat treatment was identified as a primary factor causing changes in mechanical properties of the thermoplastic material.
WELDING IN THE WORLD
(2021)
Article
Engineering, Manufacturing
Ali Taner Kuzu, Umut Karaguzel, Batiray Erbay, Mustafa Bakkal
Summary: This study investigated the effectiveness, automation characteristics, and mechanics of joints between different material types using an industrial Nd: YAG continuous-wave laser welder and a custom design jig. The research found that a strong joint between GFRP and SS304 stainless steel could be obtained by a direct laser joining process at low power with load adaptable space-filling curve patterns.
MATERIALS AND MANUFACTURING PROCESSES
(2021)
Review
Engineering, Manufacturing
Yijie Huang, Xiangdong Gao, Yanxi Zhang, Bo Ma
Summary: This review focuses on the technology of laser joining of metal and polymer, analyzing the difficulties and main problems of the process, as well as discussing crucial issues and future trends in the field.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Engineering, Chemical
M. Mahmoudi, B. Beidokhti, S. Sahebian
Summary: The research found that scratches on the aluminum surface can increase the strength of dissimilar joints, while increasing dwell time and reducing plunge rate can improve bond strength. The main joining mechanisms are mechanical interlocking and wetting of the aluminum surface by molten polyethylene. Increased surface roughness can improve the shear-tensile load of the joint.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2021)
Article
Engineering, Multidisciplinary
Junke Jiao, Qi Zou, Yiyun Ye, Zifa Xu, Liyuan Sheng
Summary: The study investigated the impact of a metal surface laser plastic-covered method and high-speed laser rotational welding technology on the joining quality between CFRTP and TC4 alloy, with significant improvements in joint strength and fatigue resistance observed as a result.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Thermodynamics
Jiang Chu, Xiao Wang, Youjuan Ma, Huixia Liu
Summary: Pretreatment of metal surfaces with micro-pits significantly increases the strength of laser transmission joints between polymers and metals. A 3D transient finite element model was built to study the flow field and transient temperature field of the molten polymer flow in the lap joint between polyethylene terephthalate and SUS304 stainless steel. It was found that the joint strength is the highest under specific conditions.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Polymer Science
Sara Nester, Dieter Meinhard, Jochen Schanz, Markus Rettenberger, Iman Taha, Harald Riegel, Volker Knoblauch
Summary: This study explores additive-manufacturing-based joining methods for tailored and functionalized joints at small scales. By using laser powder bed fusion (LPBF), an innovative joining method for aluminum cast alloys and thermoset carbon-fiber-reinforced polymers (CFRPs) is investigated. The introduction of an AlSi12 foil as a thermal barrier between the two joining partners helps overcome the challenges caused by the dissimilar thermal properties. By carefully selecting the laser parameters, remarkably high shear strengths can be achieved for the samples.
Article
Mechanics
Jiayu Chen, Jinyu Bai, Sijie Zu, Zhe Lin, Shanglu Yang
Summary: In this paper, an adjustable flat-top rectangular diode laser beam was used as a heat source to join quenched and portioned QP980 steel and CFRTP. The relationship between interfacial thermal history and joint performance was explored. The results showed that thermal history had a significant impact on interfacial chemical compositions and the formation of joint defects, and adjusting the interfacial thermal history can achieve excellent interfacial bonding.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Aerospace
Caiwang Tan, Jianhui Su, Ziwei Feng, Yifan Liu, Bo Chen, Xiaoguo Song
Summary: By laser texturing the TC4 surface, the wettability of molten CFRTP was significantly improved and the shear force of CFRTP/TC4 joints was increased. When the depth of the grid exceeded 100 micrometers, the contact angle increased and led to a gradual decrease in shear force, indicating incomplete filling.
CHINESE JOURNAL OF AERONAUTICS
(2021)
Article
Chemistry, Multidisciplinary
Mahdi Amne Elahi, Anthony Marozzi, Peter Plapper
Summary: The article focuses on the laser joining process between polypropylene and aluminum. By surface modification of aluminum and optimization of laser parameters, the mechanical properties of the assembly are improved while reducing the decomposition of polypropylene. The joined samples exhibit a maximum force of 1500 N, equivalent to a shear strength of 20 MPa.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Multidisciplinary
Tai Wang, Kiyokazu Yasuda, Hiroshi Nishikawa
Summary: This study utilized a laser system to fabricate micron-sized protrusions on metal surfaces and investigated the effects of original powder size, powder bedding thickness, laser power density, and laser irradiation time on the formation of micro-protrusions. The results showed that the fabricated micro-protrusions exhibited a spherical shape with diameters ranging from 100 μm to 500 μm.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Ceramics
Naibin Chen, Bin Chen, Duo Liu, Yanyu Song, Haitao Zhu, Xiaoguo Song, Caiwang Tan
Summary: A novel approach involving nanosecond laser preirradiation of AlN was proposed to achieve the joining of AlN and Cu. Increasing the laser scanning speed resulted in decreased surface roughness of AlN, and successfully joined modified AlN with Cu. The results of this study have significant reference value for the joining of ceramics and metals.
CERAMICS INTERNATIONAL
(2021)
Article
Environmental Sciences
Guogan Peng, Zhengshijian Pu, Fengyuan Chen, Huo Xu, Xue Cao, Ciara Chun Chen, Jingzhen Wang, Yongyan Liao, Xiaoshan Zhu, Ke Pan
Summary: A comprehensive survey was conducted to measure the metal concentrations in commonly used plastics and evaluate the effects of environmental factors and the physiochemical properties of the plastics on their metal leaching. Results showed that temperature, ultraviolet radiation, and salinity played significant roles in metal leaching from plastics. The leaching rate was primarily determined by the crystallinity of the plastics, and biofilm development hindered metal loss in the field.
ENVIRONMENT INTERNATIONAL
(2023)