Experimental Investigation of Stratasys J750 PolyJet Printer: Effects of Finish Type and Shore Hardness on Surface Roughness

2019 ◽  
Author(s):  
Xingjian Wei ◽  
Abhinav Bhardwaj ◽  
Li Zeng ◽  
Zhijian Pei
Keyword(s):  
Surface Roughness ◽  
Experimental Investigation ◽  
Lower Surface ◽  
3D Printer ◽  
Limited Information ◽  
Shore Hardness ◽  
Control Factors ◽  
Full Color

Abstract The J750 PolyJet printer is the newest model of full-color and multi-material 3D printer from Stratasys. Currently, limited information is available about the effects of control factors on surface roughness of parts printed by this printer. In this study, the effects of two control factors, finish type and Shore hardness, on surface roughness are investigated. The results suggest that both control factors significantly affect surface roughness. Specifically, samples printed with glossy finish have lower surface roughness than those with matte finish, and larger value of Shore hardness leads to lower surface roughness. These results would be valuable to researchers and practitioners who use the J750 3D printer.

Experimental Investigation of Stratasys J750 PolyJet Printer: Effects of Finish Type and Shore Hardness on Dimensional Accuracy

2019 ◽  
Author(s):  
Xingjian Wei ◽  
Ketan Thakare ◽  
Li Zeng ◽  
Zhijian Pei
Keyword(s):  
Experimental Investigation ◽  
Dimensional Accuracy ◽  
3D Printer ◽  
Limited Information ◽  
Shore Hardness ◽  
Control Factors ◽  
Full Color

Abstract The J750 PolyJet printer is the newest model of full-color and multi-material 3D printer from Stratasys. Currently, limited information is available about the effects of control factors on dimensional accuracy of parts printed by this printer. In this study, the effects of two control factors, finish type and Shore hardness, on dimensional accuracy are investigated. The results suggest that both control factors significantly affect dimensional accuracy. Specifically, samples printed with glossy finish exhibit more accurate dimensions than those with matte finish, and larger Shore hardness value leads to better dimensional accuracy. These results would be valuable to researchers and practitioners who use the J750 3D printer.

Experimental Investigation of PolyJet 3D Printing Process: Effects of Orientation and Layer Thickness on Thermal Glass Transition Temperature

2019 ◽  
Author(s):  
Jackson Sanders ◽  
Xingjian Wei ◽  
Zhijian Pei
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Layer Thickness ◽  
Elastic Moduli ◽  
3D Printer ◽  
Limited Information ◽  
Control Factors ◽  
Full Color ◽  
Process Effects

Abstract The J750 PolyJet printer is the newest model of full-color and multi-material 3D printer from Stratasys. Currently, limited information is available about the effects of control factors on thermal glass transition temperature of parts printed by this printer. In this study, the effects of two control factors, printing orientation and layer thickness, on the thermal glass transition temperature (Tg) are investigated. The results suggest that both control factors significantly affect Tg. Specifically, samples printed using the high mix mode have higher elastic moduli than those printed using high quality mode. Larger values of elastic moduli directly lead to a higher thermal glass transition temperature, making the material more effective under relatively extreme temperatures and duress. These results would be valuable to researchers and practitioners who use the Polyjet 3D printer.

Experimental Investigation of PolyJet 3D Printing Process: Effects of Finish Type and Material Color on Color Appearance

2019 ◽  
Author(s):  
Xingjian Wei ◽  
Li Zeng ◽  
Zhijian Pei
Keyword(s):  
Experimental Investigation ◽  
3D Printing ◽  
Color Appearance ◽  
3D Printer ◽  
Printing Process ◽  
Full Color ◽  
Process Effects ◽  
Main Effects

Abstract The Stratasys J750 PolyJet printer is capable of printing full-color parts. However, little information is currently available about the effects of finish type and material color on color appearance of parts printed by the PolyJet process. In this study, the effects of finish type and material color on color appearance of PolyJet printed parts are investigated; two finish types (glossy and matte) and four material colors (cyan, magenta, yellow, and black) are considered. The results suggest that the main effects of finish type and its interactions with material color are significant. Especially, the effects of finish type when material color is black are more significant among the material colors. These results would be valuable to users of the full-color PolyJet 3D printer.

Experimental investigation and modelling of light scattering in a-Si:H solar cells deposited on glass/ZnO:Al substrates

2002 ◽  
Vol 715 ◽  
Author(s):  
J. Krc ◽  
M. Zeman ◽  
O. Kluth ◽  
F. Smole ◽  
M. Topic
Keyword(s):  
Surface Roughness ◽  
Experimental Investigation ◽  
Solar Cells ◽  
Angular Distribution ◽  
Light Scattering ◽  
Optical Model ◽  
Distribution Functions ◽  
Interface Roughness ◽  
Scattering Parameters ◽  
Good Agreement

AbstractThe descriptive scattering parameters, haze and angular distribution functions of textured ZnO:Al transparent conductive oxides with different surface roughness are measured. An approach to determine the scattering parameters of all internal interfaces in p-i-n a-Si:H solar cells deposited on the glass/ZnO:Al substrates is presented. Using the determined scattering parameters as the input parameters of the optical model, a good agreement between the measured and simulated quantum efficiencies of the p-i-n a-Si:H solar cells with different interface roughness is achieved.

Experimental Investigation of Control Factors of WEDM for Al-6063

2013 ◽  
Vol 3 (2) ◽  
pp. 33-38 ◽  
Author(s):  
Deepak Matta ◽  
◽  
Jonny Garg ◽  
Neeraj Sharma ◽  
◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Control Factors

scholarly journals Bonding and Thermal Cycling Performances of Two (Poly)Aryl–Ether–Ketone (PAEKs) Materials to an Acrylic Denture Base Resin

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 543 ◽  
Author(s):  
Tzu-Yu Peng ◽  
Saiji Shimoe ◽  
Lih-Jyh Fuh ◽  
Chung-Kwei Lin ◽  
Dan-Jae Lin ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Thermal Cycling ◽  
Fatigue Testing ◽  
Lower Surface ◽  
Aryl Ether ◽  
Bonding Performance ◽  
Significant Difference ◽  
Aryl Ether Ketone ◽  
Ether Ketone ◽  
Thermal Cycling Fatigue

Poly(aryl–ether–ketone) materials (PAEKs) are gaining interest in everyday dental practices because of their natural properties. This study aims to analyze the bonding performance of PAEKs to a denture acrylic. Testing materials were pretreated by grinding, sandblasting, and priming prior to polymerization with the denture acrylic. The surface morphologies were observed using a scanning electron microscope and the surface roughness was measured using atomic force microscopy. The shear bond strength (SBS) values were determined after 0 and 2500 thermal cycles. The obtained data were analyzed using a paired samples t-test and Tukey’s honestly significant difference (HSD) test (α = 0.05). The surface characteristics of testing materials after different surface pretreatments showed obvious differences. PAEKs showed lower surface roughness values (0.02–0.03 MPa) than Co-Cr (0.16 MPa) and zirconia (0.22 MPa) after priming and sandblasting treatments (p < 0.05). The SBS values of PAEKs (7.60–8.38 MPa) met the clinical requirements suggested by ISO 10477 (5 MPa). Moreover, PAEKs showed significantly lower SBS reductions (p < 0.05) after thermal cycling fatigue testing compared to Co-Cr and zirconia. Bonding performance is essential for denture materials, and our results demonstrated that PAEKs possess good resistance to thermal cycling fatigue, which is an advantage in clinical applications. The results imply that PAEKs are potential alternative materials for the removable of prosthetic frameworks.

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