Design and Fabrication of Thermoplastic Moulds for Manufacturing CFRP Composite Impeller Blades

Draghici, Sorin; Vintila, Ionut Sebastian; Mihalache, Radu; Petrescu, Horia Alexandru; Tuță, Cătălin Stelian; Hadăr, Anton

doi:10.37358/mp.20.1.5338

Cited by 6 publications

(3 citation statements)

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“…The PETG characteristics according to [7,33,42], present values for the maximum load related to the elasticity area, taking into account the variation: wall thickness, printing speed, extrusion cooling conditions and printing bed temperature. From what is presented, it is concluded that the chassis elements of ROUV are better to be made, through 3D Printing technology, from PETG.…”

Section: Considerations For Tensile Testing In Order To Choose the Mamentioning

confidence: 99%

Using PET-G to Design an Underwater Rover Through 3D PrintingTtechnology

Grigore¹,

Stefan²,

Orban³

2020

Mater. Plast.

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The development of 3D printing technologies has gained considerable momentum. Almost every technical-scientific field uses this technology. The technology of 3D printing thermoplastic materials (or fusible filaments - FFF), is based on the realization of the parts by depositing successive layers of extruded filament at temperatures corresponding to the viscous aggregation state. One of the research activities of the CERAS research center is the realization of collaborative drone systems, drones capable of moving in each of the three unstructured environments: aerial, terrestrial aquatic / underwater. This paper presents a study on the choice of the type of thermoplastic material, for making the structural elements (chassis) of an underwater Rover. The need for this study arose from the fact that the design and construction of underwater vehicles is generally demanding. The materials must be characterized by resistance to compression / stretching / shearing, as in underwater environments the existence of currents, pressures (with increasing depth of immersion). Also, the materials must be chemically neutral, because in aquatic environments we can find various chemicals spilled in water (intentional or not) and finally salinity.

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Section: Considerations For Tensile Testing In Order To Choose the Mamentioning

confidence: 99%

Using PET-G to Design an Underwater Rover Through 3D PrintingTtechnology

Grigore¹,

Stefan²,

Orban³

2020

Mater. Plast.

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“…The analytical models, from the paper, regarding the distribution of efforts in the components of a payload started from the models used for ABS [37].…”

Section: Introductionmentioning

confidence: 99%

Considerations on the Plastic Structure of a UAV Payload Made by 3D Printing Technology

Grigore¹,

Stefan²,

Orban³

et al. 2021

Mater. Plast.

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With the development of unmanned aerial vehicle (UAV) systems for a multitude of real-time applications, 3D printing technologies have been developed to make thermoplastic structures by fusing filament Fused Deposition Modeling (FDM) or Fused Filament Fabrication (FFF). However, we consider that the realization of new technologies of experimental models / technological demonstrators / prototypes becomes profitable by using 3D printing technologies. The main aim of the paper is to highlight how the use of three types of materials, which are processed differently, influences the Von Mises stresses of the payload used for a UAV, with the mission of photographing and filming from high altitude.

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“…Martynyuk et al [ 17 , 18 ] have presented the possibility of using polymer composites in highly loaded propulsion systems correlated with the analysis of the centrifugal compressor impeller thermal state, illustrating that a composite centrifugal impeller could be manufactured using a heat-resistant thermosetting binder that increases the operating temperatures up to 350 °C, offering a 45% mass reduction of the impeller. A preliminary investigation of using CFRP composites in the fabrication of composite impeller blades was performed by [ 19 ], evaluating technological aspects and dimension stability of the composite blades after processing, by using 3D printed thermoplastics moulds. Although good dimensional stability was obtained, higher dimensional accuracies and mechanical properties can be obtained by applying pressure and elevated temperature that are not suitable for printed thermoplastic materials.…”

Section: Introductionmentioning

confidence: 99%

Novel Carbon Fibre Composite Centrifugal Impeller Design, Numerical Analysis, Manufacturing and Experimental Evaluations

et al. 2021

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This paper presents an experimental investigation on using high strength-to-weight composite materials to reduce the mass of a centrifugal compressor impeller by 600%. By reducing the blades number from 17 to 7 and by doubling their thickness, the compression ratio and efficiency were maintained close to the reference metallic impeller. Using autoclave technology, seven composite blades were manufactured individually and assembled to form the impeller. After manufacturing, small deviations were found at the blade’s tip. As these deviations were found to be symmetrical, impeller balancing was successfully performed removing a total of 45 g of mass, followed by an experimental test on a dedicated test bench. Experimental testing identified the resonant frequencies of the composite centrifugal impeller at 13.43 Hz 805 rot/min and at 77 Hz with a 0.1 mm/s amplitude at 4400 rot/min, highlighting feasibility and the advantage of a composite compressor impeller design with application in centrifugal compressors and rotating machine assemblies and sub-assemblies. As there are numerous numerical investigations performed on the strength analysis and on the lay-up orientations mechanical behaviour for polymer composite materials with respect to the design of centrifugal impellers, no experimental evaluations in relevant working conditions have been performed to date. As the paper contains relevant experimental data on the subject, the outcome of the paper may aid the oil and gas or aviation industries.

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Design and Fabrication of Thermoplastic Moulds for Manufacturing CFRP Composite Impeller Blades

Cited by 6 publications

References 0 publications

Using PET-G to Design an Underwater Rover Through 3D PrintingTtechnology

Using PET-G to Design an Underwater Rover Through 3D PrintingTtechnology

Considerations on the Plastic Structure of a UAV Payload Made by 3D Printing Technology

Novel Carbon Fibre Composite Centrifugal Impeller Design, Numerical Analysis, Manufacturing and Experimental Evaluations

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