Ultrasonic welding of polymer optical fibres onto composite materials

Shimada, Shumpei; Tanaka, Hiroki; Hasebe, K.; Hayashi, Naoaki; Ochi, Yutaka; Matsui, Tetsuya; Nishizaki, Itaru; Matsumoto, Yukihiro; Tanaka, Yosuke; Nakamura, Hitoshi; Mizuno, Yosuke

doi:10.1049/el.2016.0905

Cited by 9 publications

(5 citation statements)

References 9 publications

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“…The films were then cut into rectangular strips for characterization and ultrasonic welding. 3 Poly phenylene sulphide (Fortron®, CS Hyde Company), 4 Poly ether ether ketone (McMaster-Carr), 5 Polypropylene (pure pellets purchased from Goodfellow), 6 Purchased from US Research Nanomaterials, Inc., 7 Iron(II,III) oxide nanopowder with 50-100 nm particle size (Sigma-Aldrich), 8 Nanoparticles synthesized and provided by Dr. James Dorman and Natalia Da Silva Moura (Department of Chemical Engineering, LSU), 9 Multi-walled carbon nanotubes masterbatches (Cheap Tubes Inc.).…”

Section: Materials and Manufacturing For Multifunctional Filmsmentioning

confidence: 99%

“…In order for ultrasonically welded composite joints to be considered in industrial applications, it is imperative to find innovative ways to enable structural health monitoring (SHM), as well as predict loading and failure modes. SHM of thermoset composites and adhesive joints is a popular field of research, but welded TPC joints are not widely studied [8,9]. This work aims to integrate multifunctional films at the interface of ultrasonically welded thermoplastic composites, which would serve three purposes, as illustrated in Figure 1: i) energy director to enable ultrasonic welding, ii) sensor to monitor strains, and iii) heating element for disassembly and repair.…”

Section: Introductionmentioning

confidence: 99%

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Multifunctional Films for Fusion Bonding and Structural Health Monitoring of Thermoplastic Composite Joints

Tsai,

Palardy,

Lia

et al. 2020

SAMPE 2020 | Virtual Series

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Ultrasonic welding is a promising method to quickly bond thermoplastic composite parts. In this process, a thermoplastic film, called an "energy director", is placed between two pieces of composite materials, and melted during the welding process to facilitate bonding. This study seeks to develop a multifunctional energy director suitable for three purposes: 1) ultrasonic welding, 2) structural health monitoring (SHM) via electrical resistance measurements, and 3) heating element for disassembly and repair of the damaged bond. Various materials and manufacturing methods were investigated to develop multifunctional films: 1) magnetic or conductive nanoparticles deposited onto polymer films, and 2) multi-walled carbon nanotubes (MWNTs) dispersed into polymers. The latter was selected as a promising candidate because of its ease of manufacturability through compression molding and its compatibility with the welding process. The thermoelectrical and electro-mechanical behavior of compression molded films containing up to 20 wt% MWNT in a polypropylene (PP) matrix was assessed via a sourcemeter and dynamic mechanical analyzer. To demonstrate multifunctionality, glass fiber/PP specimens were ultrasonically welded with the MWNT/PP films as energy directors. While the multifunctional films reduced lap shear strength by up to 10%, they did not significantly affect the welding process. Moreover, welded specimens with the MWNT/PP films were successfully tested under cyclic bending for SHM through resistance measurements.

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Section: Materials and Manufacturing For Multifunctional Filmsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multifunctional Films for Fusion Bonding and Structural Health Monitoring of Thermoplastic Composite Joints

Tsai,

Palardy,

Lia

et al. 2020

SAMPE 2020 | Virtual Series

View full text Add to dashboard Cite

show abstract

“…Among different available joining methods, USW joining method is highly preferred. USW joining is one of the most efficient methods for joining polymer and its composites [4]. The blended PC/ABS polymers have been welded by imposing high frequency (20 kHz to 70 kHz) [5] vibrations under different ranges of holding pressure.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Process Parameters of Ultrasonically Welded PC/ABS Material Using Soft-Computing Techniques

Chinnadurai¹,

Prabaharan

Saravanan³

et al. 2021

IEEE Access

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Welding process is found to be a predominant procedure in most of the processing industries, especially in the automobile sector for maintenance operation and fabrication. Ultrasonic Polymer Welding (USW) is used for the joining process because of its flexibility and short needed welding time. In this article, two different polymer materials PC and ABS are blended in the ratio of 60:40 and molded into a sheet. Furthermore, molded PC/ABS sheets are joined using USW with different processing parameter settings. Three major influencing process parameters like pressure (P), amplitude (A) and weld time (Tw) are considered and other processing parameters are kept at constant. The experiment is carried out for 26 welded samples and from the obtained results it is noticed that the above-mentioned process parameters directly influence the tensile strength of welded joints. Additionally, the ultrasonically welded samples tensile strength is analyzed with the help of Artificial Neural Network technique (ANN) and Adaptive Neuro-Fuzzy Inference System method (ANFIS). From the simulation results, an optimized ANFIS model provides the superior result as compared to ANN. Moreover, Scanning Electron Microscope analysis is carried out to visualize the weld interface between the joint. Also, Finite Element Modeling (ANSYS) is performed to understand the heat dissipation during the welding process.

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“…Owing to their high strength, high elastic modulus, light weight, and high corrosion resistance, CFRPs have been used as materials for repairing or strengthening steel structures. 34) In this experiment, as a specimen, a CFRP-strengthened steel plate was fabricated using what is called a vacuum-assisted resin transfer molding (VaRTM) technique, [35][36][37][38] which is known as a reliable method for fabricating composite materials. The VaRTM process was performed by infusing a liquid resin into laminated fibers or woven fabrics exploiting the pressure difference between atmosphere and vacuum; the resin was then hardened by heat (see Refs.…”

mentioning

confidence: 99%

Infrared thermometry for breakage detection of optical fibers embedded in structures

Mizuno

Hagiwara

Lee

et al. 2019

Appl. Phys. Express

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We show that infrared thermometry can be used to detect a breakage point of an optical fiber embedded in a structure. Around the breakage point, incident light induces heat, which is detected using an infrared thermometer. By this method, we can obtain the position information of a breakage point, including the accurate information where it is located in the actual structure, on a real-time basis. We experimentally show the practical usefulness of this method by detecting a breakage point of an optical fiber embedded in a composite structure comprising carbon fiberreinforced plastics.

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Ultrasonic welding of polymer optical fibres onto composite materials

Cited by 9 publications

References 9 publications

Multifunctional Films for Fusion Bonding and Structural Health Monitoring of Thermoplastic Composite Joints

Multifunctional Films for Fusion Bonding and Structural Health Monitoring of Thermoplastic Composite Joints

Prediction of Process Parameters of Ultrasonically Welded PC/ABS Material Using Soft-Computing Techniques

Infrared thermometry for breakage detection of optical fibers embedded in structures

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