ISO 7626-5

Experimental Modal Analysis Using Impact Excitation

This test method characterises the dynamic properties of structures through experimental modal analysis using impact hammer excitation. The method measures natural frequencies, damping ratios, and mode shapes by striking the structure and recording the resulting vibration response. It is widely used in aerospace, automotive, civil engineering, and mechanical equipment development to validate structural designs and identify potential vibration issues. Accreditation ensures proper instrumentation calibration, correct measurement methodology, and reliable data interpretation for safety-critical applications.

What it measures

  • Natural frequencies (modal frequencies)
  • Damping ratios (modal damping)
  • Mode shapes (displacement patterns)
  • Frequency response functions (FRF)
  • Coherence and data quality metrics
🇩🇪 DIN EN ISO 7626-1 🇬🇧 BS EN ISO 7626-1 🇫🇷 NF EN ISO 7626-1 🇮🇹 UNI EN ISO 7626-1 🇪🇸 UNE EN ISO 7626-1 🇳🇱 NEN EN ISO 7626-1 🇩🇪 DIN EN ISO 7626-2 🇬🇧 BS EN ISO 7626-2 🇫🇷 NF EN ISO 7626-2 🇮🇹 UNI EN ISO 7626-2 🇪🇸 UNE EN ISO 7626-2 🇳🇱 NEN EN ISO 7626-2
1,591 Accredited labs
17 Countries

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Vectoflow

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DAkkS D-K-21643-02-00 Gilching, DE
am Standort Vectoflow Windtunnel A, Frie Strömungsgeschwindigkeit von Gasen 15 m/s bis > 38 m/s
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Versuchs- und Lehranstalt für Brauerei in Berlin (VLB) e. V.

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DAkkS D-PL-14173-01-03 Berlin, DE
DIN EN ISO 7458 DIN EN ISO 7459 DIN EN ISO 8106 DIN EN 29008 DIN EN 29009 + 3 more
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Vibtec GmbH Engineering and Testing

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DAkkS D-PL-17716-01-00 Zuzenhausen, DE
VDE 0468-2-2 IEC 60068-2-2 VDE 0468-2-6 IEC 60068-2-6 DIN EN 60068-2-14 + 3 more
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Vincentius-Diakonissen-Kliniken gemeinnützige AG Zentrallabor

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DAkkS D-ML-13393-01-00 Karlsruhe, DE
Blutbild, kleines (Erythrozyten, Leukozy Erythrozyten Leukozyten Retikulozyten Thrombozyten + 3 more
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Vistec Electron Beam

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DAkkS D-K-18737-01-01 Jena, DE
− Permanentes Laboratorium Positionen und Abstände gleichgerichteter Kanten positionen von Strukturen (Hartschichtmasken) + 3 more
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Vitesco Technologies GmbH Qualification Laboratory Schwalbach

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DAkkS D-PL-21928-02-00 Schwalbach, DE
VDE 0468-2-1 IEC 60068-2-1 VDE 0468-2-2 IEC 60068-2-2 DIN EN IEC 60068-2-11 + 3 more
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Volke Entwicklungsring SE

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DAkkS D-PL-20870-01-01 Wolfsburg, DE
DIN 72781-2 DIN EN 60068-2-53 DIN EN 60068-2-64 DIN EN-60068-2-27 DIN EN-60068-2-6 + 3 more
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Voltavision

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DAkkS D-PL-20464-01-01 Bochum, DE
IEC 62660-1 DIN EN-60068-2-1 ISO 12405-4: 2018 DIN EN 60068-2-14 IEC 60068-2-14 + 3 more
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WENZEL Metrology

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DAkkS D-K-17723-01-00 Wiesthal, DE
Koordinatenmessgeräte von <7000 mm under-Edge, UK INCA3D, Software von Inspect 3D, Cholet, F + 3 more
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WIKA Alexander Wiegand SE &

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DAkkS D-K-15105-01-00 Klingenberg, DE
Positiver und −1 bar bis −0,03 bar Positiver und negativer (ein- oder mehrgängige > −0,03 bar bis > 0,15 bar bis + 3 more
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WIN Messmittel und Service

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DAkkS D-K-17410-01-01 Korbußen, DE
− Parallelendmaße − Längenmessmittel − Durchmesser − Formabweichung − Gewinde + 3 more
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WINDTEST Grevenbroich

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DAkkS D-PL-11233-01-01 Grevenbroich, DE
IEC 61400-12-1 IEC 61400-12-2 IEC 61400-12-3 IEC 61400-12-5 IEC 61400-12-6 + 3 more
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Waagen-Dienst Kirste

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DAkkS D-K-20130-01-00 Meissen, DE
Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO elektronische Waagen verwendete Abkürzungen: 1) In den CMC sind die erweiterten Messu + 2 more
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Waagen-Jöhnk

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DAkkS D-K-19520-01-00 Dätgen, DE
Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO Radiated emissions (CISPR 32) verwendete Abkürzungen:
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Waagen-Kissling

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DAkkS D-K-19038-01-00 Rimbach, DE
Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO Radiated emissions (CISPR 32) verwendete Abkürzungen:
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Waagenfachhandel Hilke

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DAkkS D-K-17685-01-00 Hardegsen, DE
Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO elektronische Waagen verwendete Abkürzungen:
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Weber GmbH Weber Testzentrum

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DAkkS D-PL-18720-01-00 Aschaffenburg, DE
DIN EN IEC 60068-2-11 DIN EN 60068-2-14 DIN EN 60068-2-30 IEC 60068-2-31 DIN EN IEC 60068-2-38 + 3 more
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WIWeB

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DAkkS D-PL-14015-01-02 Erding, DE
DIN EN 2561 DIN EN ISO 14126 DIN EN ISO 14125 DIN EN 2563 DIN 53504 + 3 more
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Weidmüller Interface GmbH & Co. KG Detmold

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DAkkS D-PL-12095-01-01 Detmold, DE
DIN EN 50178: 1998 IEC 61131-2: 2020 IEC 61010-1 : 2010 DIN EN 61010-1 EN IEC 61010-2-201 + 3 more
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Werner Genest und Partner Ingenieur

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DAkkS D-PL-20012-01-00 Ludwigshafen, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3
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Westenergie Netzservice GmbH Eurotest

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DAkkS D-PL-21876-01-01 Dortmund, DE
DIN IEC 60060-1 VDE 0432- 1 IEC 60270 VDE 0434 DIN EN 61243-1 + 3 more
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Westfalen Aktiengesellschaft Sondergasezentrum Hörstel

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DAkkS D-K-14054-01-00 Hörstel, DE
Kohlenstoffmonoxid *) Kohlenstoffdioxid Propan *) Stickstoffmonoxid Distickstoffmonoxid + 3 more
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Wieland Electric GmbH Qualitätslabor

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DAkkS D-PL-20465-01-00 Bamberg, DE
IEC 60947-1 IEC 60947-7-1 VDE 0611-1 IEC 60947-7-2 VDE 0611-3 + 3 more
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Wocken Industriepartner

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DAkkS D-K-20386-01-00 Meppen, DE
Parallelendmaße aus 0,5 mm DIN EN ISO 3650:1999 Einstelldorne Durchmesser 3 mm Durchmesser 5 mm + 3 more
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Wolfgang Sorge Ingenieurbüro für Bauphysik

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DAkkS D-PL-19990-01-01 Nürnberg, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3
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Industries

Aerospace and aviation Automotive and rail vehicles Civil engineering and structures Mechanical equipment manufacturing Wind energy systems

Related Standards

  • ISO 7626-1 Vibration and shock — experimental modal analysis — Part 1: fundamentals and overview
  • ISO 7626-2 Vibration and shock — experimental modal analysis — Part 2: instrumentation for impact excitation
  • ISO 9614-1 Acoustics — determination of sound power levels of noise sources using sound intensity — Part 1: measurement at discrete points

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