Rapid Prototyping Journal: Volume 25 Issue 2

Quantifying accuracy of a concept laser metal additive machine through the NIST test artifact

Jason M. Weaver, T.J. Barton, John Linn, Derrik Jenkins, Michael P. Miles, Robert Smith

The purpose of this paper is to describe the use of a test artifact proposed by NIST to quantify the dimensional accuracy of a metal additive manufacturing process. Insights from…

Generating support structures for additive manufacturing with continuum topology optimization methods

Yang Liu, Zuyu Li, Peng Wei, Shikui Chen

The purpose of this paper is to explore the possibility of combining additive manufacturing (AM) with topology optimization to generate support structures for addressing the…

A study on the surface quality of the 3D printed parts caused by the scanning strategy

Jitai Han, Yanan Ge, Yuxin Mao, Meiping Wu

The purpose of this paper is to mainly focus on the relationship between the scanning strategy and surface quality. Surface quality, including surface roughness and flatness, is…

Integrated component-support topology optimization for additive manufacturing with post-machining

Matthijs Langelaar

The purpose of this paper is to communicate a method to perform simultaneous topology optimization of component and support structures considering typical metal additive…

SLM process parameters development of Cu-alloy Cu7.2Ni1.8Si1Cr

David Palousek, Martin Kocica, Libor Pantelejev, Lenka Klakurkova, Ladislav Celko, Daniel Koutny, Jozef Kaiser

Materials with a high thermal conductivity, such as Cu-alloys hold the most interest to the plastic moulding industry. Additive manufacturing (AM), especially selective laser…

Biphasic osteochondral scaffold fabrication using multi-material mask projection stereolithography

Xiangquan Wu, Qin Lian, Dichen Li, Zhongmin Jin

This study aims to develop a multi-material stereolithography (MMSL) technique to directly fabricate a biphasic osteochondral scaffold.

The effect of hatch angle rotation on parts manufactured using selective laser melting

Joseph Henry Robinson, Ian Robert Thomas Ashton, Eric Jones, Peter Fox, Chris Sutcliffe

This paper aims to present an investigation into the variation of scan vector hatch rotation strategies in selective laser melting (SLM), focussing on how it effects density…

Rapid fabrication of ion optics by selective laser melting

Miguel Sangregorio, Ningfei Wang, Kan Xie, Zun Zhang, Xiaojun Wang

Traditional ion optics manufacturing processes are complex and costly. The purpose of this paper is to study the feasibility of using selective laser melting (SLM) to produce…

A framework for big data driven process analysis and optimization for additive manufacturing

Arfan Majeed, Jingxiang Lv, Tao Peng

This paper aims to present an overall framework of big data-based analytics to optimize the production performance of additive manufacturing (AM) process.

Characterization of shape memory polymer parts fabricated using material extrusion 3D printing technique

Carlos Alejandro Garcia Rosales, Hoejin Kim, Mario F. Garcia Duarte, Luis Chavez, Mariana Castañeda, Tzu-Liang Bill Tseng, Yirong Lin

Shape memory polymer (SMP) is capable of recovering its original shape from a high degree of deformation by applying an external stimulus such as thermal energy. This research…

Effect of powder characteristics on parts fabricated via binder jetting process

Hadi Miyanaji, Niknam Momenzadeh, Li Yang

This study aims to experimentally investigate the effect of the powder material characteristics on the qualities of the binder jetting additive manufacturing parts both before and…

Multi-view online vision detection based on robot fused deposit modeling 3D printing technology

Hongyao Shen, Weijun Sun, Jianzhong Fu

Fused deposit modeling (FDM) additive manufacturing technology is widely applied in recent years. However, there are many defects that may affect the surface quality, accuracy, or…

Exploring multi-axis material extrusion additive manufacturing for improving mechanical properties of printed parts

Joseph R. Kubalak, Alfred L. Wicks, Christopher B. Williams

Material extrusion (ME) suffers from anisotropic mechanical properties that stem from the three degree of freedom (DoF) toolpaths used for deposition. The formation of each layer…

Development of a patients-specific 3D-printed preoperative planning and training tool, with functionalized internal surfaces, for complex oncologic cases

Asier Muguruza Blanco, Lucas Krauel, Felip Fenollosa Artés

The use of physical 3D models has been used in the industry for a while, fulfilling the function of prototypes in the majority of cases where the designers, engineers and…

Photoresins based on acrylated epoxidized soybean oil and benzenedithiols for optical 3D printing

Greta Miezinyte, Jolita Ostrauskaite, Egidija Rainosalo, Edvinas Skliutas, Mangirdas Malinauskas

The purpose of this paper is the design and investigation of novel acrylated epoxidized soybean oil-based photocurable systems as candidate materials for optical 3D printing.

Investigation of FEF process liquid phase migration using orthogonal design of experiments

Cunfu Yan, Shujuan Li, Leipeng Yang, Longfei He

The purpose of this paper is to investigate the effects of parameters on the liquid phase migration (LPM) during the freeze-form extrusion fabrication (FEF) process.

3D modelling and printing of craniofacial implant template

Deepkamal Kaur Gill, Kartikeya Walia, Aditi Rawat, Divya Bajaj, Vipin Kumar Gupta, Anand Gupta, Mamta Juneja, Rakesh Tuli, Prashant Jindal

To relieve intracranial pressure and save patient inflicted with severe head injury, neurosurgeons restore cranial defects. These defects can be caused because of trauma or…

Characterisation of 3D printed sand moulds using micro-focus X-ray computed tomography

Tharmalingam Sivarupan, Mohamed El Mansori, Keith Daly, Mark Noel Mavrogordato, Fabrice Pierron

Micro-focus X-ray computed tomography (CT) can be used to quantitatively evaluate the packing density, pore connectivity and provide the basis for specimen derived simulations of…

A personalized mandibular implant with supporting and porous structures designed with topology optimization – a case study of canine

Kangjie Cheng, Yunfeng Liu, Chunyan Yao, Wenquan Zhao, Xu Xu

The purpose of this study is to obtain a titanium mandibular implant that possesses a personalized external shape for appearance recovery, a supporting structure for physiological…

Tensile properties of aluminium 4047A built in droplet-based metal printing

Benjamin Himmel, Dominik Rumschoettel, Wolfram Volk

Directly printing molten metal droplets on a build platform to create full dense metal parts is a promising additive manufacturing process. This study aims of to analyse the…