Design of Deposition Head Trajectory for Robotized Filament Winding of Complex Shape Parts

2004 ◽  
Author(s):  
W. Polini ◽  
L. Sorrentino
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Complex Shape ◽  
Experimental Tests ◽  
Filament Winding ◽  
Structural Constraints ◽  
Cad Cam ◽  
Cam Software ◽  
Wound Composite

When the roving is winding on the die, the tension value may move away the nominal one that has been optimized by considering the quality and the mechanical properties of the wound composite parts. The variance of the tension value during winding from the nominal one strongly depends on the deposition head trajectory. The present work focuses on the planning of the winding trajectory for winding complex shape parts in composite material by a robotized cell. The planning of the winding trajectory should be based on the structural constraints of the robotized cell and on the technological requirements of the process. In particular, this work aims to study the conditions by which the value of the roving tension verges on the nominal one during winding. The developed planning logics and implemented by a CAD/CAM software have been validated by experimental tests. This work represents the first step towards the optimization of the winding trajectory.

scholarly journals A Non-Geodesic Trajectory Design Method and Its Post-Processing for Robotic Filament Winding of Composite Tee Pipes

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 847
Author(s):  
Cheng Chang ◽  
Zhenyu Han ◽  
Xinyu Li ◽  
Shouzheng Sun ◽  
Jihao Qin ◽  
...  
Keyword(s):  
Complex Shape ◽  
Design Method ◽  
Filament Winding ◽  
Trajectory Design ◽  
Post Processing ◽  
Processing Methods ◽  
Specific Strength ◽  
Cad Cam ◽  
Winding Machine ◽  
Cam Software

With the advantages of high specific strength and well corrosion resistance, polymer-matrix composite tee pipes are widely used in aerospace and civilian fields. The robotic filament winding technology is suitable for forming complex shape parts. This paper aims to provide a novel non-geodesic trajectory design method to get a continuous trajectory for tee pipe winding. Furthermore, post-processing methods are proposed for realizing the full coverage of tee pipes by robotic filament winding. The CAD/CAM software is then designed to simulate the winding process and realize the cover of the whole tee pipe. Finally, experiments of winding a tee pipe with a desktop winding machine and a six-axis winding robot are carried out. The results show that the tee pipe is fully covered, verifying the accuracy of the design method and post-processing methods.

scholarly journals Study of Hybrid Nanoparticles Modified Epoxy Resin Used in Filament Winding Composite

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3853 ◽  
Author(s):  
Chengrui Di ◽  
Junwei Yu ◽  
Baoming Wang ◽  
Alan Kin Tak Lau ◽  
Bo Zhu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Tensile Strength ◽  
Carbon Fiber ◽  
Filament Winding ◽  
Hybrid Nanoparticles ◽  
Resin System ◽  
Modified Epoxy ◽  
Wound Composite ◽  
Modified Resin

Hybrid nanoparticles modified bisphenol A type epoxy/acid anhydride resin system applicable for filament winding forming process was studied using elastic core-shell rubber (CSR) nanoparticles with a large particle size (nearly 100 nm) and rigid nano-SiO2 particles with a small particle size (about 16 nm). The formulation, process properties, mechanical properties, thermal properties and microstructure of modified resin and its wound composite were studied. The results suggested that at the content of 10 phr CSR and 2 phr nano-SiO2, the resin system achieved optimum comprehensive performance. The viscosity of modified resin system was nearly 1000 mPa·s at 25 °C and service life was over 6 h. The resin tensile strength and modulus were 89 MPa and 3.5 GPa, while flexural strength and modulus reached 128 MPa and 3.2 GPa, respectively. The impact strength was 26.6 kJ·m−2, and the glass transition temperature (Tg) reached 145.9 °C. Modified epoxy resin enhanced the mechanical properties of carbon fiber reinforced wound composite. The tensile strength, tensile modulus and interlaminar shear strength were enhanced by 14.0%, 4.56% and 18.9%, respectively, compared with a composite based on unmodified resin. The above test results and scanning electron microscopy (SEM) analysis suggest that the hybrid nanoparticles modified resin system was suitable for carbon fiber wet filament winding products.

Design of Winding With Two Rovings for Cost Efficiency and Quality in Robotized Filament Winding

2003 ◽  
Author(s):  
W. Polini ◽  
L. Sorrentino
Keyword(s):  
Complex Shape ◽  
Industrial Robot ◽  
Experimental Tests ◽  
Filament Winding ◽  
Part Quality ◽  
Integrated Environment ◽  
A Cell ◽  
Guide System ◽  
Critical Process Parameters ◽  
Pass Through

This work deals with the design of winding with two rovings of asymmetric and complex shape parts by means of robotized filament winding technology. The adopted criteria aim to decrease significantly the winding time and, therefore, the manufacturing costs by preserving the composite part quality through the design of a system that is able to control the orientation of both the rovings on the die during winding, thus avoiding their torsion. A cell composed of an industrial robot opportunely equipped with a new feed and deposition system has been designed and implemented. Two rovings are unwound by two spools fixed to a creel and, then, they are conveyed towards the new feed and deposition system connected to the robot end-effector. The rovings pass through the roving-guide system, where they are paired off in a single roving that is guided towards the deposition head. The deposition head controls the orientation of the single roving on the die during winding. The new system working and its interaction with the most critical process parameters have been evaluated through experimental tests. This work belongs to a research project aiming to develop an integrated environment to wind complex shape parts through a robotized cell.

Design of a New Feed-Deposition Head for Robotized Filament Winding

2002 ◽  
Author(s):  
L. Carrino ◽  
W. Polini ◽  
L. Sorrentino
Keyword(s):  
Process Parameters ◽  
Complex Shape ◽  
Experimental Tests ◽  
Filament Winding ◽  
Part Quality ◽  
Integrated Environment ◽  
Guide System ◽  
Critical Process Parameters ◽  
Critical Process ◽  
High Repeatability

This work deals with the design of a new feed and deposition head for a robotized cell able to manufacture complex shape parts in composite material by means of the filament winding technology. The adopted criteria aim to increase both the filament winding efficiency and the composite part quality by designing a system able to control the process parameters, such as the roving tension, the winding speed and the winding trajectory through a very compact and flexible frame, that presents in a single solution the pinboard, the roving tensioner, the roving-guide system and the deposition head. Moreover, the same frame is able to satisfy manufacturing and assembling requirements. Finally, the new proposed system has been designed in such a way as to be easily adaptable to every robot or machine used to wind, since it has a flange that may be easily connected with the robot end-effector by warranting a high precision and a high repeatability of the roving locating during the winding process. The new head working and its interaction with the most critical process parameters have been evaluated through experimental tests. This work belongs to a research project aiming to develop an integrated environment for winding complex shape parts through a robotized cell.

Atomic structure of interface of intermetallic compound TiAl and nitride Ti2AIN using HREM and image processing

1991 ◽  
Vol 49 ◽  
pp. 570-571
Author(s):  
E. Sukedai ◽  
H. Mabuchi ◽  
H. Hashimoto ◽  
Y. Nakayama
Keyword(s):  
Mechanical Properties ◽  
Image Processing ◽  
Composite Material ◽  
Intermetallic Compound ◽  
Side Surface ◽  
High Resolution Electron Microscopy ◽  
Hexagonal Structure ◽  
Second Phase ◽  
Resolution Electron ◽  
Compound Tial

In order to improve the mechanical properties of an intermetal1ic compound TiAl, a composite material of TiAl involving a second phase Ti2AIN was prepared by a new combustion reaction method. It is found that Ti2AIN (hexagonal structure) is a rod shape as shown in Fig.1 and its side surface is almost parallel to the basal plane, and this composite material has distinguished strength at elevated temperature and considerable toughness at room temperature comparing with TiAl single phase material. Since the property of the interface of composite materials has strong influences to their mechanical properties, the structure of the interface of intermetallic compound and nitride on the areas corresponding to 2, 3 and 4 as shown in Fig.1 was investigated using high resolution electron microscopy and image processing.

A Study on Polymer Particle Flow in a Disk Zone of a Screw-Disk Extruder

2014 ◽  
Vol 35 (1) ◽  
pp. 121-135 ◽  
Author(s):  
Tomasz Rydzkowski ◽  
Iwona Michalska-Pożoga
Keyword(s):  
Mechanical Properties ◽  
Computer Simulations ◽  
Particle Motion ◽  
Polymer Melt ◽  
Experimental Tests ◽  
Polymer Particle ◽  
Particle Flow ◽  
Material Particle ◽  
Motion Trajectories ◽  
Stretching Effect

Abstract The paper presents the summary of research on polymer melt particle motion trajectories in a disc zone of a screw-disk extruder. We analysed two models of its structure, different in levels of taken simplifications. The analysis includes computer simulations of material particle flow and results of experimental tests to determine the properties of the resultant extrudate. Analysis of the results shows that the motion of melt in the disk zone of a screw-disk extruder is a superposition of pressure and dragged streams. The observed trajectories of polymer particles and relations of mechanical properties and elongation of the molecular chain proved the presence of a stretching effect on polymer molecular chains.

scholarly journals Acoustic Emission and K-S Metric Entropy as Methods for Determining Mechanical Properties of Composite Materials

Sensors ◽  
2020 ◽  
Vol 21 (1) ◽  
pp. 145
Author(s):  
Lesław Kyzioł ◽  
Katarzyna Panasiuk ◽  
Grzegorz Hajdukiewicz ◽  
Krzysztof Dudzik
Keyword(s):  
Mechanical Properties ◽  
Acoustic Emission ◽  
Composite Material ◽  
Composite Materials ◽  
Testing Machine ◽  
Measurement Data ◽  
Entropy Method ◽  
Displacement Sensor ◽  
Metric Entropy ◽  
Plastic Phase

Due to the unique properties of polymer composites, these materials are used in many industries, including shipbuilding (hulls of boats, yachts, motorboats, cutters, ship and cooling doors, pontoons and floats, torpedo tubes and missiles, protective shields, antenna masts, radar shields, and antennas, etc.). Modern measurement methods and tools allow to determine the properties of the composite material, already during its design. The article presents the use of the method of acoustic emission and Kolmogorov-Sinai (K-S) metric entropy to determine the mechanical properties of composites. The tested materials were polyester-glass laminate without additives and with a 10% content of polyester-glass waste. The changes taking place in the composite material during loading were visualized using a piezoelectric sensor used in the acoustic emission method. Thanks to the analysis of the RMS parameter (root mean square of the acoustic emission signal), it is possible to determine the range of stresses at which significant changes occur in the material in terms of its use as a construction material. In the K-S entropy method, an important measuring tool is the extensometer, namely the displacement sensor built into it. The results obtained during the static tensile test with the use of an extensometer allow them to be used to calculate the K-S metric entropy. Many materials, including composite materials, do not have a yield point. In principle, there are no methods for determining the transition of a material from elastic to plastic phase. The authors showed that, with the use of a modern testing machine and very high-quality instrumentation to record measurement data using the Kolmogorov-Sinai (K-S) metric entropy method and the acoustic emission (AE) method, it is possible to determine the material transition from elastic to plastic phase. Determining the yield strength of composite materials is extremely important information when designing a structure.

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