Abstract
Material jetting (MJ) technology is an additive manufacturing method that selectively cures liquid photopolymer to build functional parts. The use of MJ technology has increased in popularity and been adapted by different industries, ranging from biomedicine and dentistry to manufacturing and aviation, thanks to its advantages in printing parts with high dimensional accuracy and low surface roughness. To better understand the MJ technology, it is essential to address the capabilities, applications and the usage areas of MJ. Additionally, the comparison of MJ with alternative methods and its limitations need to be explained. Moreover, the parameters influencing the dimensional accuracy and mechanical properties of MJ printed parts should be stated. This paper aims to review these critical aspects of MJ manufacturing altogether to provide an overall insight into the state of the art of MJ.
Highlights
The demand for complex parts is steadily increasing in different industries to manufacture lighter parts with higher stiffness, higher strength and lower cost
Kechagias et al investigated the effect of layer thickness, surface finish setting and model scale factor on dimensional accuracy of internal and external features produced by Material jetting (MJ)
This review focused on state of art of MJ printing technology, and its advantages over other technologies and applications
Summary
The demand for complex parts is steadily increasing in different industries (especially in aerospace, automotive and biomedical industries) to manufacture lighter parts with higher stiffness, higher strength and lower cost. The two different terms are utilized to refer to material jetting processes synonymously These names are used due to secured naming rights of the material jetting printer manufacturers Stratasys (PolyJet) and 3DSystems (MultiJet). Ultraviolet (UV) light is emitted onto the molten material on the build platform for curing In this photopolymerization/photo-curing process, a light source of a specific wavelength is used to cure monomers/oligomers in the liquid state [8]. Since liquid or molten material is used in MJ, a gel-like support structure is needed, especially in overhang regions These support structures are removed from the part using different methods: Polymers 2021, 13, x FOR PEER REVIEW sonication in a bath of sodium hydroxide solution, heating or using a high-pressure water jet [13]
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