China3D printingNet, April 20th, a team from the Brightlands Material Center in the Netherlands developed the self-induction through the use of integrated fibers.3D printingComposite parts. The unique self-sensing characteristics of components are expected to enable the monitoring of complex critical structures in industries such as construction and repair in the future.
Self-induction parts
Self-awareness is the ability of a material to monitor its own condition. Previously, polymer matrix composites with infused continuous carbon fibers have been used as self-sensors, whereby the change in fiber resistance has been measured. Self-sensing materials with sufficient fibers will allow us to monitor the structural health of large parts in aerospace applications and even bridges.
However, the production of traditional self-induction composite parts is usually a complex multi-step process that requires specialized equipment to integrate continuous fibers. The Brightlands team’s goal is to use additive manufacturing technology to manufacture self-sensors, and to use the advantages of both technologies to obtain more effective results.
3D printingContinuous fiber
3D printingThis will allow precise positioning of carbon fibers within composite parts, with their placement and orientation extending along the critical areas where they are needed. Fibers can also be grouped in batches to provide more sensitive monitoring when needed-the geometric freedom of additive manufacturing makes all of this possible.
Induction bridge demonstration. Filmed by BMC.
Brightlands researchers conducted an experiment to verify the deformation of a scale model pedestrian bridge.3D printingSensor fiber method. The bridge is simply a curved beam made of a thermoplastic polymer matrix infused with carbon fiber.It is composited with Anisoprint Composer A43D printingThe printer allows the fibers to be inserted periodically along the build direction by co-extrusion, which creates anisotropy. When electrical connections are made, several fibers extend out of the bridge and are measured under varying loads. Its resistance.
The results show that there is a clear correlation between the load applied on the bridge and the electrical resistance of the continuous fiber, and the electrical resistance increases with increasing force.This verifies the team’s3D printingSelf-inductance application of continuous fiber injection into composite materials.They hope to extend this novel method to actual use cases, in which case3D printingThe self-induction prototype can provide useful data on which parts of the component bear the greatest load or the range of forces that the component needs to bear. Engineers can use this data to design prostheses to distribute stress more effectively or build bridge structures to support larger loads.
Due to the high strength and low weight of the material, people have been exploring for a long time3D printingThe use of carbon fiber in many applications. Italian product development service provider Due Pi Greco has recently expanded from car prototypes to production using the carbon fiber printing function of Stratasys’ Fortus 380mc CFE system.Elsewhere in California, AREVO and Franco Bicycles have collaborated to provide new electric bicycle products3D printingCarbon fiber frame.
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