... and a consumer 3D printer. First, shrinkage was evaluated at both the beam and the cell level, using the data obtained from a 3D structured light scanner. In addition, the same structures underwent compression testing to validate their mechanical response. Findings Six different unsupported lattice cells...

...Michael Rosenthal; Markus Rüggeberg; Christian Gerber; Lukas Beyrich; Jeremy Faludi Purpose The purpose of this study is to quantify the vertical shrinkage rates and the mechanical strength of three-dimensional (3D) printed parts for a variety of wood-based materials for liquid deposition modeling...

...Solomon O. Obadimu; Kyriakos I. Kourousis Purpose The wide application of metal material extrusion (MEX) has been hampered by the practicalities associated with the resulting shrinkage of the final parts when commercial three-dimensional (3D) printing equipment is used. The shrinkage behaviour...

... is categorised and discussed by considering the implemented research methods. Findings The interest in the accuracy of additively manufactured thermoplastics is increasing. The principal sources of inaccuracies are those shrinkages occurring during part solidification. The analysis of the research methods...

...Christoph Schmutzler; Tobias H. Stiehl; Michael F. Zaeh Purpose The purpose of this work is to explain the emergence of warpage due to a locally and temporally inhomogeneous shrinkage in 3D printing (Binder-Jetting) of polymers. Design/methodology/approach An analysis of shrinkage yields...

...Tomaz Brajlih; Urska Kostevsek; Igor Drstvensek Purpose 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 shrinkage and size of laser heat affected zone (LHAZ). This paper...

...Sushant Negi; Rajesh Kumar Sharma Purpose The purpose of this paper is to provide a better understanding of process parameters that have a significant effect on the shrinkage behaviour of laser-sintered PA 3200GF specimens. Design/methodology/approach A five-factor, three-level and face...

... infrared spectroscopy. The tension strength was determined according to the standard ASTM D638-2003, the flexible strength was determined according to ASTM D790-07 and the hardness was measured according to ASTM D2240-05. The volume shrinkage was measured by dilatometer method. The glass transition...

... Thermoplastic polymers 3D printing Poly(methyl methacrylate) Benchmarking Infiltration Shrinkage Surface roughness Three‐dimensional (3D) printing is an example of additive manufacturing or of solid freeform fabrication technology. Powdered materials are deposited in layers and selectively joined...

..., requiring no conventional sintering post process. Furthermore, during laser fusion this process is able to compensate dimensional error due to shrinkage. Therefore, CLF is suitable for producing complex part with less distortion. Despite crack sensitivity, this process may have a potential to fabricate...

...), Rapid Prototyping and Manufacturing‐Fundamentals of Stereolithography , Society of Manufacturing Engineers , Dearborn, MI . Karalekas , D. (2000), “ A proposed analysis and experimental methodology for the determination of cure shrinkage in SL formed plates “, in, Proceedings of the 9th...

...‐filled counterparts were made by subjecting the parts to tensile tests. It was observed that the fiber‐reinforced specimens yielded higher measured values of elastic modulus and ultimate tensile strength. The amount of shrinkage encountered by the reinforced prototypes during post‐curing was also found...

...Hiroyuki Narahara; Fumiki Tanaka; Takeshi Kishinami; Satoru Igarashi; Katsumasa Saito In the industrial use of stereolithography, precision is always a problem. The basic phenomenon of solidification shrinkage has not been sufficiently investigated. This study aims at clarifying the initial linear...