Size has absolutely been an issue, no doubt about it. The servo system to handle the lenngth of a blade must have high resolution over a 150 foot, or more, length, a width of perhaps 25 feet, and possibly ten feet in the third direction. So just that part of the composite blade building system is a big deal. The other part of the challenge has been the low production rate, which has not been enough to support the investment for a fully automated system. That has been a real impediment.
It is very surprising that this process isn't already automated but clearly reducing system cost (and total installed cost) is a must for nearly all renewable energy projects. Good to see work being done on this, an important step toward viability in the future.
That's very true, Charles, and Fraunhofer seems to have the reputation and the knowhow to make some inroads here. They've also partnered with industry leaders, so hopefully if they put all their heads together they can come up with some good ideas.
This is one of many pieces of the puzzle for renewable energy. Cost reduction -- particularly through elimination of manual labor for big parts like turbine blades -- is going to be important going forward.
Fraunhofer sure has its fingers in a lot of R&D pies. This sounds like the clever and innovative stuff they've come up with in materials, as well as other automated manufacturing techniques from composite production for autos, to repair robots, to big 3D printers for car makers. Thanks for reporting this.
I think this is a very well-intentioned and much-needed effort by Fraunhofer to try to inject automation into the blade-building process. Automation has already cut costs and reduced production times for other industries, and I think if the same can be done for turbine blades it would also help promote the use of turbines as alternative energy sources. Wind is an abundant and plentifull source of energy and more adoption (within reason due to economic impact of turbines) is one of the ways out of traditional energy dependence.
An MIT research team has invented what they see as a solution to the need for biodegradable 3D-printable materials made from something besides petroleum-based sources: a water-based robotic additive extrusion method that makes objects from biodegradable hydrogel composites.
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