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Test & Validation

Lightning Test Center Wind Turbine

Why testing is essential

Certainty beats assumption. That is why we thoroughly test and validate all our engineering designs and solutions. And that is why we advise you to ensure that your wind turbine manufacturer (OEM) has similarly carried out all the necessary tests.

Enforce the recommended practices and keep in mind that in some cases, your solutions/assets need further or more extensive testing due to your project’s location or operational conditions.

Accredited test centers

We have two test centers in Denmark – one specialized for lightning tests and the other for material tests.

Both test centers are accredited by DANAK (Danish Accreditation Fund, which is a member of ILAC) according to the ISO/IEC 17025 standard. This accreditation guarantees you test results at the highest quality.

Chemical Testing Wind Turbine Material

Full engineering advice or test only

We can advise you on the best testing methodologies, carry out the tests in a controlled and accredited environment, help you understand the test results, and even provide you engineering advice, so all your components are fit for your on-site conditions.

As an accredited test center, we also offer our services to R&D projects, where we only carry out the tests as per your needs. Your tests and test results remain in full confidentiality.

Lightning tests

Initial Leader Attachment Test

Determines likely lightning attachment points on the test sample. Test follows IEC 61400-24.

Subsequent Stroke Attachment Test

Predicts possible puncture locations in or close to the swept area. Test follows IEC 61400-24.

High Current Arc Entry Test

Assesses the level of damage at the possible lightning strike attachment points. Test follows IEC 61400-24.

High Current Conducted Current

Assesses the impact of electro dynamical forces and heating. Test follows IEC 61400-24.

Electrical Resistivity and Conductivity

Determines the resistivity or conductivity of solid materials.

Electric Strength of Insulating Materials

Determines the electric strength of solid insulating materials under voltage stress. Test follows IEC 60243.

Electric and Magnetic Field Immunity Test

Verifies the performance of electronic equipment and installations close to the lightning strike.

Power Frequency High Current Test

Verifies the performance of equipotential bondings and the current carrying capability of different conductor geometries.

HVDC Tests

Used for non-destructive verification tests and for simulating static discharge.

Lightning Polytech Herning Test Center Wind Turbine Blade
Rain Erosion Tester

Weathering tests

Rain Erosion


Recommended practice to test liquid impingement erosion using rotating apparatus

ASTM G73-10

Standard test method for liquid impingement erosion using rotating apparatus

Xenon-arc Lamps

ISO 16474

Paint and varnishes – Methods of exposure to laboratory light sources

ISO 4892-2

Plastics – Methods of exposure to laboratory light sources. Part 2: Xenon-arc lamps

ASTM G155 – 13

Standard practice for operating Xenon Arc light apparatus for exposure of non-metallic materials

Fluorescent UV

ISO 4892-3

Plastics – Methods of exposure to laboratory light sources – part 3 Fluorescent UV lamps

ISO 16474-3

Paints and varnishes - Methods of exposure to laboratory light sources. Part 3: Fluorescent UV lamps


ISO 2813

Paint and varnishes – Determination of gloss value at 20°, 60° and 85°


ISO 12944-9

Paint and varnishes – Performance requirements for protective paint systems for offshore and related structures.

Salt Spray

ISO 9227

Corrosion tests in artificial atmospheres – Salt spray tests

Tensile tests

Tensile - General

ISO 527 part 1, 2 and 3

Plastics – Determination of tensile properties Part 1: General principles Part 2: Test conditions for moulding and extrusion plastics Part 3: Test conditions for films and sheets


ISO 37

Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties


ASTM D 3330

Standard test method for peel adhesion of pressure-sensitive tape

ISO 4578

Adhesives – Determination of peel resistance of high-strength adhesive bonds – Floating-roller method


ISO 4587

Adhesives — Determination of tensile lap-shear strength of rigid-to-rigid bonded assemblies


ASTM D-624

Standard test method for tear strength of conventional vulcanized rubber and thermoplastic elastomer

ISO 34

Rubber, vulcanized or thermoplastic – determination of tear strength

Compression Test

Compression tests

ISO 844

Rigid cellular plastics — Determination of compression properties

ISO 604

Determination of compressive properties

ISO 7743

Rubber, vulcanized or thermoplastic — Determination of compression stress-strain properties

ISO 815

Rubber, vulcanized or thermoplastic — Determination of compression set

Other tests

DSC (-90°C to 300°C)

ISO 11357 part 1, 2 and 3

Plastics - Differential scanning calorimetry (DSC) Part 1: General principles Part 2: Determination of glass transition temperature and glass transition step height Part 3: Determination of temperature and enthalpy of melting and crystallization


ISO 1183

Plastics - Methods for determining the density of non-cellular plastics Part 1: Immersion method, liquid pyknometer method and titration method

Water Absorption

ISO 62

Plastics - Determination of water absorption

Shore Hardness

ISO 868

Plastics and ebonite - Determination of indentation hardness by means of a durometer (Shore hardness)

Climate Cycling

Customer specific


Customized Tests

Customer specific


Density Test