Introduction
Additive manufacturing, also known as 3D printing, is being recognized as an innovative manufacturing solution in the era of 4th industrial revolution. Selective laser sintering (SLS) in additive manufacturing is often used to produce rigs and fixtures for cost benefits and efficiency in the manufacturing industry. However, the application of additive manufacturing to practical products and systems is still limited due to reliability issues of 3D printed parts.

Effect of Humidity Changes on Dimensional Stability of 3D Printed Parts by Selective Laser Sintering
–    Partners

–    Abstract
In field application, it is often the case that changes in environmental conditions, such as temperature and humidity, adversely affects the dimensional stability, and might result in unexpected shape deformation while in use. This study examined the dimensional stability of 3D printed parts by SLS, particularly focusing on the effect of humidity on shape deformation.

–    Reference
Kwon, D., Park, E., Ha, S., and Kim, N. (2017) “Effect of Humidity Changes on Dimensional Stability of 3D Printed Parts,” International Journal of Precision Engineering and Manufacturing, vol. 18(9), pp. 1275-1280.

Dimensional Compensation Algorithm for Vertical Bending Deformation of 3D printed Parts
–    Partners

–    Abstract
Selective laser sintering process often causes convex curved shapes of 3D printed parts due to thermal deformation in the powder sintering and cooling processes, which accompanies multi-phase changes of the raw materials. This research presented a systematic dimensional calibration process by investigating and analyzing the dimensional deformation patterns of 3D printed samples in SLS platform. An algorithm was proposed to predict the deformation and calibrates point-based 3D CAD STL files of samples in order to mitigate the dimensional deformation.

–    Reference
Ha, S., Ransikarbum, K., Han, H., Kwon, D., Kim, H., and Kim, N. (2017) “A Dimensional Compensation Algorithm for Vertical Bending Deformation of 3D printed Parts in Selective Laser Sintering,” Rapid Prototyping Journal, vol. 24(7), pp.