Comparison analysis of titanium alloy Ti6Al4V produced by metallurgical and 3D printing method

Objectives Laser-engineered net shaping (LENS) of coated surfaces can overcome the limitations of conventional coating technologies. We compared the in vitro biological response with a titanium plasma spray (TPS)-coated titanium alloy (Ti6Al4V) surface with that of a Ti6Al4V surface coated with titanium using direct metal fabrication (DMF) with 3D printing technologies. Methods The in vitro ability of human osteoblasts to adhere to TPS-coated Ti6Al4V was compared with DMF-coating. Scanning electron microscopy (SEM) was used to assess the structure and morphology of the surfaces. Biological and morphological responses to human osteoblast cell lines were then examined by measuring cell proliferation, alkaline phosphatase activity, actin filaments, and RUNX2 gene expression. Results Morphological assessment of the cells after six hours of incubation using SEM showed that the TPS- and DMF-coated surfaces were largely covered with lamellipodia from the osteoblasts. Cell adhesion appeared similar in both groups. The differences in the rates of cell proliferation and alkaline phosphatase activities were not statistically significant. Conclusions The DMF coating applied using metal 3D printing is similar to the TPS coating, which is the most common coating process used for bone ingrowth. The DMF method provided an acceptable surface structure and a viable biological surface. Moreover, this method is automatable and less complex than plasma spraying. Cite this article: T. Shin, D. Lim, Y. S. Kim, S. C. Kim, W. L. Jo, Y. W. Lim. The biological response to laser-aided direct metal-coated Titanium alloy (Ti6Al4V). Bone Joint Res 2018;7:357–361. DOI: 10.1302/2046-3758.75.BJR-2017-0222.R1.

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Drilling of titanium alloy (Ti6Al4V) – a review

Machining Science and Technology ◽

10.1080/10910344.2021.1925295 ◽

2021 ◽

pp. 1-66

Author(s):

Chua Guang Yuan ◽

A. Pramanik ◽

A. K. Basak ◽

C. Prakash ◽

S. Shankar

Keyword(s):

Titanium Alloy ◽

Titanium Alloy Ti6al4v

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The design of pores in PCL/HA-associated PLA scaffold with 3D printing method

10.1063/5.0034912 ◽

2020 ◽

Author(s):

Dyah Hikmawati ◽

Tiandini Dwi Sundari ◽

Aminatun ◽

Inten Firdhausi Wardhani

Keyword(s):

3D Printing ◽

Printing Method

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Correction to: 3D printing method for next‑day acetabular fracture surgery using a surface filtering pipeline: feasibility and 1‑year clinical results

International Journal of Computer Assisted Radiology and Surgery ◽

10.1007/s11548-021-02348-7 ◽

2021 ◽

Author(s):

Simon Weidert ◽

Sebastian Andress ◽

Christoph Linhart ◽

Eduardo M. Suero ◽

Axel Greiner ◽

...

Keyword(s):

3D Printing ◽

Acetabular Fracture ◽

Clinical Results ◽

Fracture Surgery ◽

Printing Method

A correction to this paper has been published: https://doi.org/10.1007/s11548-021-02348-7

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Removal Mechanism of Titanium Alloy Ti6Al4V Based on Single-Grain High Speed Grinding Test

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.487.39 ◽

2011 ◽

Vol 487 ◽

pp. 39-43 ◽

Cited By ~ 1

Author(s):

L. Tian ◽

Yu Can Fu ◽

W.F. Ding ◽

Jiu Hua Xu ◽

H.H. Su

Keyword(s):

Titanium Alloy ◽

High Speed ◽

Chip Thickness ◽

Wheel Speed ◽

High Speed Grinding ◽

Tc4 Alloy ◽

Grinding Mechanism ◽

Single Grain ◽

On Chip ◽

Titanium Alloy Ti6al4v

Single-grain grinding test plays an important part in studying the high speed grinding mechanism of materials. In this paper, a new method and experiment system for high speed grinding test with single CBN grain are presented. In order to study the high speed grinding mechanism of TC4 alloy, the chips and grooves were obtained under different wheel speed and corresponding maximum undeformed chip thickness. Results showed that the effects of wheel speed and chip thickness on chip formation become obvious. The chips were characterized by crack and segment band feature like the cutting segmented chips of titanium alloy Ti6Al4V.

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3D printing method of multi piezo head using a photopolymer resin

10.1109/iccas.2007.4406803 ◽

2007 ◽

Cited By ~ 2

Author(s):

Jung-Su Kim ◽

Dong-Soo Kim ◽

Min-Cheol Lee

Keyword(s):

3D Printing ◽

Printing Method

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Study of 3D printing method for GRIN micro-optics devices

10.1117/12.2207957 ◽

2016 ◽

Cited By ~ 1

Author(s):

P. J. Wang ◽

J. A. Yeh ◽

W. Y. Hsu ◽

Y. C. Cheng ◽

W. Lee ◽

...

Keyword(s):

3D Printing ◽

Micro Optics ◽

Printing Method

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Analytical modelling of cutting forces in near-orthogonal cutting of titanium alloy Ti6Al4V

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science ◽

10.1177/0954406214542967 ◽

2014 ◽

Vol 229 (6) ◽

pp. 1122-1133 ◽

Cited By ~ 11

Author(s):

Yun Chen ◽

Huaizhong Li ◽

Jun Wang

Keyword(s):

Titanium Alloy ◽

Cutting Forces ◽

Chemical Reactivity ◽

Orthogonal Cutting ◽

Chip Thickness ◽

Analytical Modelling ◽

Shear Instability ◽

Published Data ◽

Machining Processes ◽

Titanium Alloy Ti6al4v

Titanium and its alloys are difficult to machine due to their high chemical reactivity with tool materials and low thermal conductivity. Chip segmentation caused by the thermoplastic instability is always observed in titanium machining processes, which leads to varied cutting forces and chip thickness, etc. This paper presents an analytical modelling approach for cutting forces in near-orthogonal cutting of titanium alloy Ti6Al4V. The catastrophic shear instability in the primary shear plane is assumed as a semi-static process. An analytical approach is used to evaluate chip thicknesses and forces in the near-orthogonal cutting process. The shear flow stress of the material is modelled by using the Johnson–Cook constitutive material law where the strain hardening, strain rate sensitivity and thermal softening behaviours are coupled. The thermal equations with non-uniform heat partitions along the tool–chip interface are solved by a finite difference method. The model prediction is verified with experimental data, where a good agreement in terms of the average cutting forces and chip thickness is shown. A comparison of the predicted temperatures with published data obtained by using the finite element method is also presented.

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Using a Cable-Driven Parallel Robot with Applications in 3D Concrete Printing

Applied Sciences ◽

10.3390/app11020563 ◽

2021 ◽

Vol 11 (2) ◽

pp. 563

Author(s):

Tuong Phuoc Tho ◽

Nguyen Truong Thinh

Keyword(s):

3D Printing ◽

Large Scale ◽

Trust Region ◽

Parallel Robot ◽

Inverse Kinematic ◽

Programming Algorithm ◽

Construction Time ◽

Inverse Kinematic Problem ◽

Robot Configuration ◽

Printing Method

In construction, a large-scale 3D printing method for construction is used to build houses quickly, based on Computerized Aid Design. Currently, the construction industry is beginning to apply quite a lot of 3D printing technologies to create buildings that require a quick construction time and complex structures that classical methods cannot implement. In this paper, a Cable-Driven Parallel Robot (CDPR) is described for the 3D printing of concrete for building a house. The CDPR structures are designed to be suitable for 3D printing in a large workspace. A linear programming algorithm was used to quickly calculate the inverse kinematic problem with the force equilibrium condition for the moving platform; this method is suitable for the flexible configuration of a CDPR corresponding to the various spaces. Cable sagging was also analyzed by the Trust-Region-Dogleg algorithm to increase the accuracy of the inverse kinematic problem for controlling the robot to perform basic trajectory interpolation movements. The paper also covers the design and analysis of a concrete extruder for the 3D printing method. The analytical results are experimented with based on a prototype of the CDPR to evaluate the work ability and suitability of this design. The results show that this design is suitable for 3D printing in construction, with high precision and a stable trajectory printing. The robot configuration can be easily adjusted and calculated to suit the construction space, while maintaining rigidity as well as an adequate operating space. The actuators are compact, easy to disassemble and move, and capable of accommodating a wide variety of dimensions.

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