This news article was originally written in Spanish. It has been automatically translated for your convenience. Reasonable efforts have been made to provide an accurate translation, however, no automated translation is perfect nor is it intended to replace a human translator. The original article in Spanish can be viewed at Desarrollan aspas para aerogeneradores más resistentes y ligeras

They develop sails for aerogeneradores more resistant and light

22/05/2012

22 May 2102

Engineers and researchers of the CaseWestern Reserve University of United States have attained to create a prototype of sail of aerogenerador lighter and eight more resistant times and durable that the sails employed in the actuality, as it signals in his bulletin the Foundation Opti.

The prototype has been realised with poliuretano reinforced with nanotubos of carbon. This procedure allows to contribute greater ligereza and resistance to the sails.

The characteristics obtained of the prototype will allow to solve two limitations of the sails for aerogeneradores. On the one hand, the increase of weight that would suppose the development of sails of greater magnitude, what propiciaría a descent in the energetic production. By another, the need of a greater rigidity in the sails to optimise the wind generation.

The results of the essays

mechanics realised on the

poliuretano reinforced with nanotubos

of carbon showed that

this material surpasses to the resins

used at present for the

manufacturing of sails.

In a comparison between distinct

material, the researchers ascertained

that the new combination

was lighter that the fibre of

carbon and aluminium, and that surpassed

in more than 5 times to the fibre

of carbon and in more than 60 to the

aluminium, in what to resistance to

the traction refers .

On the other hand, other proofs determined that the compound of poliuretano reinforced with nanotubos of carbon reaches a length eight greater times that the resin epoxi reinforced with fibre of glass. The new material also showed to be eight harder times in the proofs of delaminación by fracture.

The performance in the proofs realised reached still better results when comparing the new composed with viniléster reinforced with fibre of glass, another material of wide application in the sails for aerogeneradores. Likewise, also it surpassed with clarity in distinct parameters to the performance obtained with other resins.

OPINIÓN