Optical flow tracking of the intensity barycenter position in a frame sequence recorded during a tensile test to establish the XY-plane deformation map of a flat 3D printed sample

2021 ◽  
Author(s):  
Bruno Serio ◽  
Jean-Jacques Hunsinger ◽  
Ye Zhy
Keyword(s):  
Tensile Test ◽  
Optical Flow ◽  
Plane Deformation ◽  
Frame Sequence ◽  
3D Printed ◽  
Deformation Map

Physical property of 3D-printed sinusoidal pattern using shape memory TPU filament

2020 ◽  
Vol 90 (21-22) ◽  
pp. 2399-2410 ◽  
Author(s):  
Shahbaj Kabir ◽  
Hyelim Kim ◽  
Sunhee Lee
Keyword(s):  
Mechanical Properties ◽  
Tensile Test ◽  
Shape Memory ◽  
Fused Deposition Modeling ◽  
Loss Modulus ◽  
Thermoplastic Polyurethane ◽  
Heating Process ◽  
Fused Deposition ◽  
3D Printed ◽  
Sinusoidal Pattern

This study has investigated the physical properties of 3D-printable shape memory thermoplastic polyurethane (SMTPU) filament and its 3D-printed sinusoidal pattern obtained by fused deposition modeling (FDM) technology. To investigate 3D filaments, thermoplastic polyurethane (TPU) and SMTPU filament were examined by conducting infrared spectroscopy, x-ray diffraction (XRD), dynamic mechanical thermal analysis (DMTA), differential scanning calorimetry (DSC) and a tensile test. Then, to examine the 3D-printed sinusoidal samples, a sinusoidal pattern was developed and 3D-printed. Those samples went through a three-step heating process: (a) untreated state; (b) 5 min heating at 70°C, cooling for 30 min at room temperature; and (c) a repeat of step 2. The results obtained by the three different heating processes of the 3D-printed sinusoidal samples were examined by XRD, DMTA, DSC and the tensile test to obtain the effect of heating or annealing on the structural and mechanical properties. The results show significant changes in structure, crystallinity and thermal and mechanical properties of SMTPU 3D-printed samples due to the heating steps. XRD showed the increase in crystallinity with heating. In DMTA, storage modulus, loss modulus and the tan σ peak position also changed for various heating steps. The DSC result showed that the Tg for different steps of the SMTPU 3D-printed sample remained almost the same at around 51°C. The tensile property of the TPU 3D-printed sinusoidal sample decreased in terms of both load and elongation with increased heating processes, while for the SMTPU 3D-printed sinusoidal sample, the load decreased but elongation increased about 2.5 times.

Environment Influence on the Properties of Functional Parts Made of HIPS Material

2021 ◽  
Vol 105 (1) ◽  
pp. 431-440
Author(s):  
Pavel Šafl ◽  
Jana Zimáková ◽  
Tomáš Binar
Keyword(s):  
Electron Microscope ◽  
3D Printing ◽  
Tensile Test ◽  
Uv Light ◽  
Starting Material ◽  
Climatic Chamber ◽  
3D Printed ◽  
Formation Of Cracks ◽  
Printed Materials ◽  
Degree Of Degradation

The aim of this work is to study the climatic influences on 3D printed materials. This study focuses on the HIPS material, which was chosen as the starting material for further studies. The material in the field of 3D printing is known for its rapid photooxidation, which results in the formation of cracks in the final product. A climatic chamber was used for degradation, in which UV light, heat and increased humidity were applied to the material. The degree of degradation was then checked by tensile test and electron microscope.

Continuous Bidirectional Optical Flow for Video Frame Sequence Interpolation

2019 ◽  
Author(s):  
Donghao Gu ◽  
ZhaoJing Wen ◽  
Wenxue Cui ◽  
Rui Wang ◽  
Feng Jiang ◽  
...  
Keyword(s):  
Optical Flow ◽  
Video Frame ◽  
Frame Sequence

Anisotropy Evaluation of Different Raster Directions, Spatial Orientations, and Fill Percentage of 3D Printed PETG Tensile Test Specimens

2019 ◽  
Vol 821 ◽  
pp. 167-173 ◽  
Author(s):  
Muammel M. Hanon ◽  
Róbert Marczis ◽  
László Zsidai
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Tensile Test ◽  
Fused Deposition Modelling ◽  
Elongation At Break ◽  
Know How ◽  
Fused Deposition ◽  
Test Pieces ◽  
3D Printed ◽  
Fill Percentage

In this paper, the mechanical properties of Polyethylene terephthalate-glycol (PETG) tensile test specimens have been investigated. The test pieces were prepared using fused deposition modelling (FDM) 3D printing technology. Three print settings were examined which are: raster direction angles, print orientations, and infill percentage and patterns in order to evaluate the anisotropy of objects when employing FDM print method. The variations in stress-strain curves, tensile strength values and elongation at break among the tested samples were studied and compared. Illustration for the broken specimens after the tensile test was accomplished to know how the test pieces printed with various parameters were fractured. A comparison with some previous results regarding the elongation at break has been carried out.

scholarly journals Tensile-test-Property Evaluations of 3D Printed Continuous Carbon Fiber Reinforced Thermoplastic Composites

2019 ◽  
Vol 45 (4) ◽  
pp. 141-148
Author(s):  
Akira TODOROKI ◽  
Tatsuki OASADA ◽  
Yoshihiro MIZUTANI ◽  
Yoshiro SUZUKI ◽  
Masahito UEDA ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Tensile Test ◽  
Thermoplastic Composites ◽  
Fiber Reinforced ◽  
Continuous Carbon Fiber ◽  
3D Printed ◽  
Carbon Fiber Reinforced

3D-printed polypropylene transtibial sockets: Mechanical behavior

2020 ◽  
pp. 095440622094392
Author(s):  
MacArthur L Stewart
Keyword(s):  
3D Printing ◽  
Yield Strength ◽  
Tensile Test ◽  
Tensile Properties ◽  
Material Properties ◽  
Standard Test ◽  
Test Method ◽  
Material Behavior ◽  
Cross Sectional ◽  
3D Printed

This paper defines the tensile properties of a successfully worn 3D-printed transtibial socket. The socket was printed from a proprietary polypropylene filament and FDM 3D-printing process. Fused disposition modeling involves producing successive cross-sectional layers on top of one another and welding them together. Because of this, a notch is formed between the printed layers. As part of this investigation, tensile test specimens were die-cut perpendicular to the material direction and tested according to ASTM D638—Standard Test Method for Tensile Properties of Plastics. From the measured load–elongation data, stress–strain curves and the corresponding material properties were determined, including modulus of elasticity E, Poisson’s ratio ν, yield strength Sy, and ultimate strength Su. The average values for each of these material properties were 955 MPa, 0.35, 11.4 MPa, and 16.3 MPa, respectively. In addition to defining tensile properties, this work demonstrated a viable methodology for characterizing the as-built material behavior of 3D-printed sockets.

scholarly journals Optimization of Abs 3D-Printing Method and Parameters

1970 ◽  
Vol 3 (1) ◽  
pp. 44-51
Author(s):  
Paweł Żur ◽  
Alicja Kołodziej ◽  
Andrzej Baier ◽  
Grzegorz Kokot
Keyword(s):  
3D Printing ◽  
Tensile Test ◽  
Acrylonitrile Butadiene Styrene ◽  
Fused Deposition Modelling ◽  
Fused Deposition ◽  
Electric Car ◽  
University Of Technology ◽  
Static Tensile ◽  
3D Printed ◽  
Printing Method

The paper presents research on the method of 3D-printing ABS (Acrylonitrile butadiene styrene). Series of specimens were 3D-printed in FDM (Fused Deposition Modelling) technology with variable parameters. The influence of the following parameters has been checked: temperature of printing and infill density. Moreover, the material properties of raw, unprocessed ABS have been inspected. The tensile strength of specimens and Young’s modulus have been determined in a static tensile test. Tests were carried out in compliance with the ASTM D638-14 standard. Obtained results were then compared with the material datasheet. Optimum printing method has been defined. The carried out research resulted in optimizing the printing method for ABS vehicle parts applied in Silesian Greenpower electric car. The car has been developed by students of The Silesian University of Technology in Gliwice, Poland as an interfaculty students’ project. Results of the tensile test research have been analysed and discussed and conclusions have been presented in the following article.

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