Strength of 3D Printed Polymer Parts (VIDEO)

parts

Presentation / interview with César Stüpp, Brightlands Materials Center / TNO.

Fused filament fabrication (FFF) is a very versatile AM technique, although it is widely used for prototyping due to their limited mechanical properties, especially in between layers. To approach this matter, a novel technique was developed in which the strength in between layers was increased in 184%, which results in stronger parts.

Continue reading “Strength of 3D Printed Polymer Parts (VIDEO)”

3D printed concrete walls more stable with mechanistic model developed by TU/e researcher

A professor of Applied Mechanics at the Eindhoven University of Technology in the Netherlands has developed a model for determining the dimensions and printing speeds needed to keep 3D printed concrete walls stable.

Construction 3D printing is an exciting area of additive manufacturing, but 3D printing with concrete-type materials doesn’t come without its problems. This is basically because 3D printed concrete is asked to do a lot more work than it is used to: while normal concrete deposited in formwork can harden over several weeks, 3D printed concrete needs to carry the burden of the next layer almost immediately after its deposition. Continue reading “3D printed concrete walls more stable with mechanistic model developed by TU/e researcher”

TU/e researcher develops mechanistic model to keep 3D printed concrete walls stable

A professor of Applied Mechanics at the Eindhoven University of Technology in the Netherlands has developed a model for determining the dimensions and printing speeds needed to keep 3D printed concrete walls stable.

Construction 3D printing is an exciting area of additive manufacturing, but 3D printing with concrete-type materials doesn’t come without its problems. This is basically because 3D printed concrete is asked to do a lot more work than it is used to: while normal concrete deposited in formwork can harden over several weeks, 3D printed concrete needs to carry the burden of the next layer almost immediately after its deposition. Continue reading “TU/e researcher develops mechanistic model to keep 3D printed concrete walls stable”

World’s first 3D printed concrete cycle bridge opened in The Netherlands

World’s first 3D printed concrete cycle bridge opened in The Netherlands

Today world’s first 3D printed reinforced, pre-stressed concrete bridge was opened. The cycle bridge is part of a new road around the village of Gemert, in the Netherlands. It was printed at Eindhoven University of Technology. With the knowledge the researchers gained in this project, they are now able to design even larger printed concrete structures.

Five-ton load
The bridge is the first civil infrastructure project to be realized with 3D-concrete printing. The bridge is 8 meters long (clear span 6.5 meters) and 3.5 meters wide. As it is a ‘worlds first’, the developers did not take any chances and tested the bridge by putting a load of 5 tons on it, which is a lot more than the load the bridge will actually carry.

Thirty years
The bridge has to meet all regular requirements of course. It is designed to do its duty – to carry cyclists – for thirty years or more. With more cycles than people in the Netherlands, it is expected that hundreds of cyclists will ride over the printed bridge every day. It is part of a large road construction project, led by the company BAM Infra, and commissioned by the province of North-Brabant. Continue reading “World’s first 3D printed concrete cycle bridge opened in The Netherlands”

Rob Wolfs, Eindhoven University of Technology, Will Speak at the 3D Printing Materials Conference

Rob Wolfs, Eindhoven University of Technology, will speak about “3D printing of sustainable concrete structures – From a black and white printer towards a colour printer” at the 3D Printing Materials Conference.

Concrete is worldwide used as one of the major construction materials, both in situ and prefabricated. It is cheap, fire resistant and durable. However, the costs of a typical concrete structures consist for about 50% on the formwork needed. Besides, the cement production is responsible for a serious part of the exhaust of greenhouse gasses worldwide. Continue reading “Rob Wolfs, Eindhoven University of Technology, Will Speak at the 3D Printing Materials Conference”