Rapid Prototyping Journal: Volume 23 Issue 6

Evaluation of efficiency and mechanical properties of Inconel 718 components built by wire and powder laser material deposition

Jon Iñaki Arrizubieta, Fritz Klocke, Nils Klingbeil, Kristian Arntz, Aitzol Lamikiz, Silvia Martinez

The purpose of this paper is to evaluate and compare powder and wire laser material deposition (LMD) processes.

Bonding quality and fracture analysis of polyamide 12 parts fabricated by fused deposition modeling

Hao Li, Shuai Zhang, Zhiran Yi, Jie Li, Aihua Sun, Jianjun Guo, Gaojie Xu

This work aims to evaluate the influence of rheological properties of building materials on the bonding quality and ultimate tensile strength in the fused deposition modeling…

A hybrid machine learning approach for additive manufacturing design feature recommendation

Xiling Yao, Seung Ki Moon, Guijun Bi

This paper aims to present a hybrid machine learning algorithm for additive manufacturing (AM) design feature recommendation during the conceptual design phase.

Influence of processing parameters on creep and recovery behavior of FDM manufactured part using definitive screening design and ANN

Omar Ahmed Mohamed, Syed Hasan Masood, Jahar Lal Bhowmik

The purpose of this paper is to investigate the effect of process parameters of fused deposition modelling (FDM) 3D printing process on viscoelastic responses (creep compliance…

A hybrid electrospinning and electrospraying 3D printing for tissue engineered scaffolds

Yang Wu, Jerry Fuh, Yoke San Wong, Jie Sun

Fabricating functionally graded scaffolds to mimic the complex spatial distributions of the composition, micro-structure and functionality of native tissues will be one of the key…

Low cost digital fabrication approach for thumb orthoses

Miguel Fernandez-Vicente, Ana Escario Chust, Andres Conejero

The purpose of this paper is to describe a novel design workflow for the digital fabrication of custom-made orthoses (CMIO). It is intended to provide an easier process for…

Friction and wear of the intervertebral disc endoprosthesis manufactured with use of selective laser melting process

Adrian Bartlomiej Mróz, Lukasz Lapaj, Tomasz Wisniewski, Konstanty Skalski, Volf Leshchynsky

Orthopaedic implants, such as intervertebral disc endoprostheses (IDEs) are difficult to manufacture by means of conventional methods because of their complex shape. However…

Enhancing the sustainability of chemical vapour polishing of additive manufactured ABS parts using a vacuum chamber

Sergio Pietanza, Donato Sorgente, Gianluca Percoco

In this paper, the authors propose an experimental set-up to study the chemical vapour polishing technique confining pure dimethylketone atmosphere at a fixed temperature in a…

A comparative study of mechanical properties and machinability of wrought and additive manufactured (selective laser melting) titanium alloy – Ti-6Al-4V

Manikandakumar Shunmugavel, Ashwin Polishetty, Moshe Goldberg, Rajkumar Singh, Guy Littlefair

The purpose of this paper is to study and compare the mechanical properties and machinability characteristics of additive manufactured titanium alloy Ti-6Al-4V with conventionally…

Study on the role of deposition path in electron beam freeform fabrication process

Wuzhu Yan, Zhufeng Yue, Jianwen Feng

The present work aims to reveal the effect of deposition paths on transient temperature, transient stress, residual stress and residual warping in the electron beam freeform…

Effect of energy input on the UHMWPE fabricating process by selective laser sintering

Changhui Song, Aibing Huang, Yongqiang Yang, Zefeng Xiao, Jia-kuo Yu

This study aims to achieve customized prosthesis for total joint arthroplasty and total hip arthroplasty. Selective laser sintering (SLS) as additive manufacturing could enable…

Edge quality in fused deposition modeling: I. Definition and analysis

Antonio Armillotta, Marco Cavallaro

The purpose of this paper is to discuss the problem of the geometric accuracy of edges in parts manufactured by the Fused Deposition Modeling process, as a preliminary step for an…

Investigating impact of five build parameters on the maximum flexural force in FDM specimens – a definitive screening design approach

Ognjan Luzanin, Vera Guduric, Ivan Ristic, Simon Muhic

The purpose of this study was to examine the impact of five key build parameters – layer thickness, deposition angle, infill, extrusion speed and extrusion temperature, and their…

Fundamental investigation of part properties at accelerated beam speeds in the selective laser sintering process

Matthias Michael Lexow, Maximilian Drexler, Dietmar Drummer

Despite the recent progress in basic process understanding considering the selective laser sintering (SLS) of thermoplastics, several aspects of the mechanisms of the beam and…

A method for modularity in design rules for additive manufacturing

Haeseong Jee, Paul Witherell

As the technology matures, design rules for additive manufacturing (AM) can help ensure manufacturability, which can be viewed as compatibility between designs and the fabrication…

The microstructure and mechanical properties of deposited-IN625 by laser additive manufacturing

Lanlan Qin, Changjun Chen, Min Zhang, Kai Yan, Guangping Cheng, Hemin Jing, Xiaonan Wang

Laser additive manufacturing (LAM) technology based on powder bed has been used to manufacture complex geometrical components. In this study, IN625 superalloys were fabricated by…

A method to estimate the transient fluid pressure of a piezoelectric inkjet printer using system dynamic analysis

Kun Wang, Juntong Xi

This paper aims to present a method based on dynamics to find the transient pressure at the nozzle area of a piezoelectric inkjet printer. This pressure responds to input signals…

An interactive product customization framework for freeform shapes

Yunbo Zhang, Tsz Ho Kwok

The purpose of this paper is to establish new computer-aided-design (CAD) framework to design custom product that is fabricated additive manufacturing (AM), which can produce…

Metallographic evaluation of duplex stainless steel powders processed by selective laser melting

Karl P. Davidson, Sarat B. Singamneni

This paper aims to establish the microstructures and the process-structure relationships in duplex stainless steel powders consolidated by selective laser melting (SLM).

A 3D-printed osseointegrated combined jaw and dental implant prosthesis – a case study

Santosh Kumar Malyala, Ravi Kumar Y., Aditya Mohan Alwala

This paper aims to present a new design in the area of basal osseointegrated implant (BOI) for oral and maxillofacial surgery using a patient-specific computer-aided design (CAD…

A new two-step adaptive direct slicing approach for bio-scaffolds in tissue engineering

Wangyu Liu, Mingke Li

This paper aims to propose the new two-step adaptive direct slicing method for building bio-scaffold with digital micro-mirror device (DMD)-based MPμSLA systems.

Application of ultrasonic peening during DMLS production of 316L stainless steel and its effect on material behavior

Joshua Gale, Ajit Achuhan

Additive manufacturing (AM) processes involve a layer-by-layer sintering of metallic powders to produce fully functional three-dimensional parts. This layer-by-layer building…

Modified curing protocol for improved strength of binder-jetted 3D parts

Matthew P. Watters, Michelle L. Bernhardt

This paper aims to present a new curing protocol which improves part strength and provides better repeatability for full-part infiltration by varying binder saturation levels. The…

Optimization of parameters for SLS of WC-Co

Sanjay Kumar, Aleksander Czekanski

WC-Co is a well-known material for conventional tooling but is not yet commercially available for additive manufacturing. Processing it by selective laser sintering (SLS) will…

Analysis of specimens from phase I of the 3D printing in Zero G technology demonstration mission

Tracie Prater, Quincy Bean, Niki Werkheiser, Richard Grguel, Ron Beshears, Terry Rolin, Tim Huff, Richard Ryan, Frank Ledbetter, Erick Ordonez

Human space exploration to date has been limited to low Earth orbit and the moon. The International Space Station (ISS) provides a unique opportunity for researchers to prove out…

Effect of cold vapour treatment on geometric accuracy of fused deposition modelling parts

Ashu Garg, Anirban Bhattacharya, Ajay Batish

The purpose of this paper is to investigate the influence of low-cost chemical vapour treatment process on geometric accuracy and surface roughness of different curved and…