# Materials

**URL:** https://forums.nlr.gov/c/wind-water/materials/15.md

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## [About the Materials category](https://forums.nlr.gov/t/about-the-materials-category/34)

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**Author:** [@system](https://forums.nlr.gov/u/system)\
**Replies:** 0

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Discuss material properties, analysis, and testing.

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## [BeamDyn: The blade modal are calculated using the BeamDyn.sum file](https://forums.nlr.gov/t/beamdyn-the-blade-modal-are-calculated-using-the-beamdyn-sum-file/6258)

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**Author:** [@ShiXuan.Li](https://forums.nlr.gov/u/ShiXuan.Li)\
**Replies:** 9\
**Last updated:** [January 22, 2024, 6:07pm UTC](https://forums.nlr.gov/t/beamdyn-the-blade-modal-are-calculated-using-the-beamdyn-sum-file/6258 "2024-01-22T18:07:16Z")

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Dear all, I tried to use the stiffness matrix and mass matrix in BeamDyn’s.sum file to calculate the natural frequency and mode shape. After removing the first six rows and six columns of data from the K M matrix, I con…

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## [Materials Science in Airborne Wind Energy (AWE) Part 1](https://forums.nlr.gov/t/materials-science-in-airborne-wind-energy-awe-part-1/2534)

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**Author:** [@Dave.Santos](https://forums.nlr.gov/u/Dave.Santos)\
**Replies:** 1\
**Last updated:** [August 29, 2021, 7:32pm UTC](https://forums.nlr.gov/t/materials-science-in-airborne-wind-energy-awe-part-1/2534 "2021-08-29T19:32:01Z")

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AWE systems (AWES) materials run the gamut from “energy drones” with composite airframes, complex power electronics, and advanced avionics, to “rag & string only”, pure engineering polymer, like UHMWPE or nylon as exampl…

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## [Material Properties](https://forums.nlr.gov/t/material-properties/2411)

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**Author:** [@James.Mcauliffe](https://forums.nlr.gov/u/James.Mcauliffe)\
**Replies:** 9\
**Last updated:** [April 8, 2021, 2:47pm UTC](https://forums.nlr.gov/t/material-properties/2411 "2021-04-08T14:47:27Z")

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Hi all, I am attempting to carry out a modal analysis of the NREL 15-Mw wind turbine. I’ve been looking for the properties of each of the materials used on the turbine and the locations of where each material is used. F…

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## [Plastic Properties](https://forums.nlr.gov/t/plastic-properties/2431)

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**Author:** [@James.Mcauliffe](https://forums.nlr.gov/u/James.Mcauliffe)\
**Replies:** 0\
**Last updated:** [March 23, 2021, 6:22pm UTC](https://forums.nlr.gov/t/plastic-properties/2431 "2021-03-23T18:22:54Z")

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Hi all, I am attempting to perform a pushover analysis of the 15 Mw turbine on Abaqus that requires the plastic properties (stress vs strain) of the materials such as the cast iron, steel and the blade materials etc. I…

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## [Youngs modulus of Mooring line](https://forums.nlr.gov/t/youngs-modulus-of-mooring-line/2032)

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**Author:** [@Krishnaveni.Balakris](https://forums.nlr.gov/u/Krishnaveni.Balakris)\
**Replies:** 4\
**Last updated:** [April 30, 2019, 4:00pm UTC](https://forums.nlr.gov/t/youngs-modulus-of-mooring-line/2032 "2019-04-30T16:00:30Z")

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Dear sir Am trying to find the Young’s modulus of the mooring line from default OC3 Moordyn values The lines below are from Moordyn: C(6) = {‘Name Diam MassDen EA BA/-zeta Can Cat Cdn Cdt’}; C…

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## [Certification and failure criteria](https://forums.nlr.gov/t/certification-and-failure-criteria/55)

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**Author:** [@Corrado.Pinzana](https://forums.nlr.gov/u/Corrado.Pinzana)\
**Replies:** 2\
**Last updated:** [April 25, 2017, 3:52am UTC](https://forums.nlr.gov/t/certification-and-failure-criteria/55 "2017-04-25T03:52:15Z")

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Hi from a German Lloyd report about the certification of blades, I read that the failure criteria used up to know by aerospace community are not so reliable as one could think. The Puck failure criteria is mentioned as …

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## [UPWIND blade materials & geomtry](https://forums.nlr.gov/t/upwind-blade-materials-geomtry/622)

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**Author:** [@Eneko.Agirre](https://forums.nlr.gov/u/Eneko.Agirre)\
**Replies:** 3\
**Last updated:** [January 29, 2013, 1:27pm UTC](https://forums.nlr.gov/t/upwind-blade-materials-geomtry/622 "2013-01-29T13:27:21Z")

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Hi everybody, First of all congratulations for this forum, it is very useful. I am studying the deflection failure on the wind turbine blades. I have done some analysis in a concrete blade, but I’m thinking about doing…