Rapid Prototyping Journal: Volume 25 Issue 1

Effect of post-processing on the dimensional accuracy of small plastic additive manufactured parts

Joseph Nsengimana, Jacobus Van der Walt, Eujin Pei, Maruf Miah

This paper aims to investigate the effect of post-processing techniques on dimensional accuracy of laser sintering (LS) of Nylon and Alumide^® and fused deposition modelling (FDM…

Optimal assembling of 3D printed features by modulation of interfacial behaviour

Justin Favero, Sofiane Belhabib, Sofiane Guessasma, Hedi Nouri

Assembling items to achieve bigger parts seems to be the solution to counterbalance the dimension limits of 3D printing. This work aims to propose an approach to achieve optimal…

A modified LBM for non-Newtonian effect of cement paste flow in 3D printing

Weiwei Wu, Xiaodiao Huang, Yuanyuan Li, Chenggang Fang, Xianhui Jiang

The screw extruder is applied in cement-three-dimensional (3D) printing. The cement paste flow in 3D printing is the typical Herschel–Bulkley fluid. To understand the flow in the…

Toughness-based recovery efficiency of shape memory parts fabricated using material extrusion 3D printing technique

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

Shape memory polymers (SMPs) are classified as smart materials owing to their inherent stimulus-induced response. SMPs are capable of recovering partially or totally to its…

Interface geometries in 3D multi-material prints by fused filament fabrication

Micaela Ribeiro, Olga Sousa Carneiro, Alexandre Ferreira da Silva

An issue when printing multi-material objects is understanding how different materials will perform together, especially because interfaces between them are always created. This…

Densification behavior of 316L-NiB stainless steel powder and surface morphology during selective laser melting process using pulsed Nd:YAG laser

Jelena Stašić, Dušan Božić

This paper aims to report the production of 316L-1 Wt.% NiB cubes by using the selective laser melting (SLM) process. The laser used was pulsed, millisecond Nd:YAG system with…

Development of 3D-printed customized facial padding for burn patients

Muhammad Aiman Ahmad Fozi, Mohamed Najib Salleh, Khairul Azwan Ismail

This paper aims to develop 3D-printed customized padding to increase pressure at the zero pressure region. This padding is specifically intended for facial areas with complex…

Research on key technique of line forming for 3D sand mould printing based on quantitative analysis of binder content

Donghua Zhao, Weizhong Guo, Baibing Zhang, Feng Gao

Fractional relaxation model of materials obtained with selective laser sintering technology

Jerzy Bochnia, Slawomir Blasiak

The purpose of this paper was to verify the possibility of applying differential calculus of incomplete order to describe relaxation of the material obtained using selective laser…

Multiresolution layered manufacturing

Jose David Fernandez, Joel de Coninck

Two-photon polymerization (TPP) has become one of the most popular techniques for stereolithography at very high resolutions. When printing relatively large structures at high…

Selective laser sintered mould for orbital cavity reconstruction

Marco Mandolini, Agnese Brunzini, Michele Germani, Steve Manieri, Alida Mazzoli, Mario Pagnoni

Orbital fractures are the most commonly encountered midfacial fractures, and usually, the fracture involves the floor and/or the medial wall of the orbit. This paper aims to…

Characterization of a granulate-based strand deposition process in the FLM-method for definition of material-dependent process strategies

Leander Schmidt, Klaus Schricker, Jean Pierre Bergmann, Felix Hussenöder, Mathias Eiber

This study aims to characterize the suitability of a direct extrusion process in the fused layer manufacturing (FLM)-method under processing of granulated plastics.

Enhanced continuous liquid interface production with track-etched membrane

Wenxiong Lin, Huagang Liu, Haizhou Huang, Jianhong Huang, Kaiming Ruan, Zixiong Lin, Hongchun Wu, Zhi Zhang, Jinming Chen, Jinhui Li, Yan Ge, Jie Zhong, Lixin Wu, Jie Liu

The purpose of this paper is to explore the possibility of an enhanced continuous liquid interface production (CLIP) with a porous track-etched membrane as the oxygen-permeable…

A parametric and adaptive slicing (PAS) technique: general method and experimental validation

Francesco Rosa, Serena Graziosi

The purpose of this paper is to describe an innovative Parametric and Adaptive Slicing (PAS) technique to be used for generating material addition paths along three-dimensional…

Structural design of a 3-D printed stab resistant body armor

Zheng Gong, Xinming Qian, Mengqi Yuan

Stab-resistant body armor (SRBA) can protect the human body from injury as a result of stabbing by sharp projectiles. However, in its current design SRBA, it has not been widely…

Mechanical feasibility of ABS/HIPS-based multi-material structures primed by low-cost polymer printer

Sunpreet Singh, Narinder Singh, Munish Gupta, Chander Prakash, Rupinder Singh

The purpose of this paper is to fabricate acrylonitrile-butadiene-styrene (ABS)/high impact polystyrene (HIPS) based multi-material geometries using a low cost polymer printer. At…

Controlling the porosity of 316L stainless steel parts manufactured via the powder bed fusion process

Abdullah AlFaify, James Hughes, Keith Ridgway

The pulsed-laser powder bed fusion (PBF) process is an additive manufacturing technology that uses a laser with pulsed beam to melt metal powder. In this case, stainless steel…

Assessment of mechanical properties and flammability of magnesium oxide/PA12 composite material for SLS process

Sunil Kumar Tiwari, Sarang Pande, Santosh M. Bobade, Santosh Kumar

The purpose of this paper is to propose and develop PA2200-based composite powder containing 0-15 Wt.% magnesium oxide before directly using it in selective laser sintering (SLS…

A statistical method for build orientation determination in additive manufacturing

Yicha Zhang, Ramy Harik, Georges Fadel, Alain Bernard

For part models with complex shape features or freeform shapes, the existing build orientation determination methods may have issues, such as difficulty in defining features and…

Influence of part’s geometrical properties on shrinkage and laser heat affected zone size at selective laser sintering

Tomaz Brajlih, Urska Kostevsek, Igor Drstvensek

One of the main problems of selective laser sintering (SLS) manufacturing process is the dimensional accuracy of products. Main causes of dimensional deviations are material…