丁he Problem Statement
Design a "Smart" wind turbine blade that can predict when and where defects within the construction could cause potentially catastrophic failure
The sensing solution must be robust. embeddable: cost effective, provide thousands of strain sensing locations with a nearly zero weight budget.
●The Solution
■Luna's High Definition Distributed Fiber Sensing (HD-FOS) solution provided thousands of strain sensing points both in and on the composite blade.
■In combination with Luna's readout electronics and software, engineers performing fatigue testing were able to pin-point areas of high residual strain and predict failure many times earlier than previously possible.
●Background
■Advanced composite materials are now used exclusively in the production of wind turbine blades and increasingly in aircraft production
■The design of large composite structures, subject to high loads, can be challenging. Material properties: fabrication methods and joining techniques are very different than used for traditional metals
The manufacturing processes are new and can add a substantial degree of variability to a wind turbine blades (or aircraft wing's) structural performance
■New methods are needed for strain measurement to characterize residual strains during layup: to detect incongruities in the composite structure and to measure strain across the joints and seams using new advanced adhesives.
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2016/6/1, |
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