公开(公告)号：US20220299013A1

公开(公告)日：2022-09-22

申请号：US17616717

申请日：2020-07-21

Applicant: LM WIND POWER A/S

Inventor： Isaac Alejandro Martinez TOVAR

IPC: F03D17/00 ,  F03D1/06 ,  G01N29/12 ,  G01N29/44

Abstract: Disclosed is a method for detecting concealed emerging defects in a structure of a wind turbine blade, and a wind turbine blade comprising a first acoustical transducer fastened to a first area of a surface of a structure of the wind turbine blade, and wherein the first acoustical transducer is configured to, while the wind turbine blade being attached to a hub of a wind turbine and the wind turbine is operating: emit a first primary acoustic signal through the surface of the structure and into the structure; and receive a first secondary acoustic signal indicative of an echo of the first primary acoustic signal.