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3D Printing Certification

Watch: NTU and Sembcorp researchers 3D print concrete bathroom device in hours


A analysis workforce from Nanyang Technological University (NTU), Singapore, is 3D printing certification unfurnished lavatory units in 12 hours or a lot less.

In an effort to increase the manufacturing of Prefabricated Toilet Models (PBUs), the NTU staff, as perfectly as Sembcorp Layout and Building and Sembcorp Architects & Engineers, additively manufactured PBUs 30% faster and lighter than standard PBUs.

Dr. Tan Ming Jen, Affiliate Professor at the University of Mechanical & Aerospace Engineering, NTU, who partly led this job, reported, “By being capable to print-on-demand from customers, organizations can help save on their stock charges as well a manpower expenditures, as they really do not have to keep as a great deal inventory and their staff can be redeployed to do higher-degree responsibilities.”

“This solution improves the basic safety of the place of work due to the fact robots are accomplishing the design of the toilet unit.”

NTU Singapore develops technology to 3D-print a bathroom unit in less than a day

3D printing certification a lavatory unit 

According to the NTU scientists, it has been a necessity for all non-landed residential Governing administration Land Sale (GLS) web pages in Singapore to use PBUs in its building method as of 2014. Consequently, to improve efficiency for the country’s making and construction sector, additive production certification was used.

Typically, PBUs are cast from concrete and absolutely preassembled and equipped offsite, then lifted and installed in the wished-for making spot. To lower these kinds of labor, a 6-axis KUKA robotic arm able of 3D printing certification concrete was used in a manufacturing facility-managed atmosphere.

Lim Tuang Liang, Govt Director at the Exploration, Innovation and Company Coordination Place of work at the Nationwide Exploration Basis (NRF), an organization which aided the establishment of NTU’s Singapore Centre for 3D Printing certification, explained: 

“Singapore’s toughness in advanced manufacturing systems is deepening not only in the place of research but also in the adoption and deployment of these systems by our providers. This project is [a] testomony to our potent investigate and translational capabilities in 3D printing certification.”

A close-up of the 3D printed PBU. Photo via NTU.
A near-up of the 3D printed PBU. Picture via NTU.

Waste reduction with concrete 3D printing certification 

To effectively 3D print a PBU, NTU and Sembcorp designed special concrete mixtures which contain inexperienced making supplies such as geopolymers created from fly ash squander. Pursuing this, new printing and handle methods experienced to be developed to allow the desired move level of the nozzle for the hardening properties of the concrete.

With a arrive at of 6 meters in diameter, the KUKA arm carried out the design in a one establish as the concrete combination was fed to mixers and pumped out of a nozzle mounted on the robotic arm. Also, the workforce used a W-lattice form to decrease material wastage as very well as insert more energy to the final construction. 

It was documented that the 3D printed PCB saved an approximated 60% in yield time and manpower. Concluding their project, the study team 3D printed and outfitted two PBUs. A single measuring 1.62m (L) x 1.5m (W) x 2.8m (H), made in 9 several hours and a further measuring 2m (L) x 2.6m (W) x 2.8m (H) in 12 several hours.

The larger sized 3D printed PBU has been through field tests and achieved the demanded toughness and robustness as spelled out in Singapore Normal SS492: 2001. At this time, it is going through drinking water absorption and fire resistance tests as element of the prerequisites underneath the Developing Innovation Panel (BIP) PBU acceptance framework as NTU and Sembcorp in the long run purpose to commercialize this technological innovation.

The 3D printed PBU. Photo via NTU.
The 3D printed PBU. Photograph by way of NTU.

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Featured image shows (From ideal) Professor Wong Teck Neng Professor Tan Ming Jen and Er Lie Liong Tjen, team direct from Sembcorp Structure and Design, and Sembcorp Architects & Engineers with a 3D printed toilet device. Picture by way of NTU.