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
1,817 Accredited labs
19 Countries

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Siebert und Knipschild GmbH Ingenieurbüro für Kunststofftechnik

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DAkkS D-PL-11222-01-01 Oststeinbek, DE
ISO 37 ISO 8513 DIN EN 1393 ISO 21527-2 DIN EN ISO 527-4 + 3 more
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Siemens Aktiengesellschaft AG SI EP EMS R&D TC3

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DAkkS D-PL-11055-04-00 Amberg, DE
IEC 60947-1 IEC 60947-2 IEC 60947-3 IEC 60947-4-1 IEC 60947-4-2 + 3 more
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Siemens Aktiengesellschaft DI CS SD CSS ITM CA

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DAkkS D-K-11055-06-02 Fürth, DE
Thermodynamische Messgrößen Temperaturmessgrößen - Direktanzeigende Thermometer Railway brake handbooks (UIC 547) - Thermopaare, Thermoelemente + 3 more
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Siemens Aktiengesellschaft Prüffeld der Schaltwerke - Mittelspannung

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DAkkS D-PL-11055-10-01 Berlin, DE
DIN EN IEC 60255-1 DIN EN 60255-27: 2014 IEC 60255-27: 2013 DIN EN 60068-2-1 2008 DIN EN 60068-2-14 + 3 more
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Siemens Aktiengesellschaft SIMATIC TYPE Test Amberg

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DAkkS D-PL-11055-06-01 Amberg, DE
IEC 61000-6-1 VDE 0839-6-1 IEC 61000-6-2: 2005 VDE 0839-6-2 IEC 61000-6-3: 2006 + 3 more
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Siemens Aktiengesellschaft Testing Laboratory Medium Voltage Frankfurt am Main

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DAkkS D-PL-11055-09-00 Frankfurt am Main, DE
DIN IEC 60060-1 IEC 60068-2-1 DIN EN IEC 60068-2-11 IEC 60068-2-14 IEC 60068-2-17 + 3 more
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Siemens Aktiengesellschaft Type Test Laboratory Electronics Siemens Motion Control

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DAkkS D-PL-11055-26-01 Erlangen, DE
IEC 61000-4-2: 2008 IEC 61000-4-4: 2012 IEC 61000-4-5: 2005 IEC 61000-4-6: 2013 IEC 61000-4-7 + 3 more
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Siemens Energy Global GmbH & Co. KG Acoustics Erlangen

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DAkkS D-PL-21472-02-00 Erlangen, DE
DIN 45641 DIN 45630-1 DIN 45635-1 DIN 45635-14 DIN ISO 10494 + 3 more
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Siemens Healthineers AG Corporate Testing Laboratory

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DAkkS D-PL-22642-01-01 Erlangen, DE
DIN EN 60601-1 IEC 60601-1 DIN EN 60601-1-3 IEC 60601-1-3 DIN EN 60601-2-54 + 3 more
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Siemens Mobility GmbH Prüf- und Validationcenter

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DAkkS D-PL-21237-02-00 Wegberg, DE
DIN EN 15625 IEC 61133 DIN 27202-10 DIN EN 15746-1 DIN EN 60068-2-64 + 2 more
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Siemens Mobility GmbH Typtestzentrum Braunschweig

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DAkkS D-PL-21237-01-01 Braunschweig, DE
IEC 61000-4-2: 2008 VDE 0847-4-2 IEC 61000-4-3: 2006 VDE 0847-4-3 IEC 61000-4-4: 2012 + 3 more
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Sozialstiftung Bamberg Institut für Labordiagnostik, Mikrobiologie und Transfusionsmedizin

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DAkkS D-ML-13177-02-00 Bamberg, DE
Verschlußzeit Kollagen/ADP Kollagen/Epinephrin Basophile Granulozyten Eosinophile Granulozyten Erythrozyten + 3 more
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Sozialstiftung Bamberg Institut für Labordiagnostik Mikrobiologie und Transfusionsmedizin

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DAkkS D-ML-13180-01-00 Bamberg, DE
Verschlußzeit Kollagen/ADP Kollagen/Epinephrin Basophile Granulozyten Eosinophile Granulozyten Erythrozyten + 3 more
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SpineServ

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DAkkS D-PL-13415-02-00 Ulm, DE
DIN EN ISO 9626 ISO 7206-13 ISO 7206-12 ISO 7206-10 ISO 7206-4 + 3 more
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Staatliche Betriebsgesellschaft für Umwelt und Landwirtschaft

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DAkkS D-PL-14420-01-01 Radebeul, DE
DIN 38402-A 13 DIN EN ISO 5667-6 (A 15) DIN EN ISO 5667-1 (A 4) DIN EN ISO 5667-3 (A 21) DIN 38404-C 4 + 3 more
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Staatsbetrieb für Mess- und Eichwesen Eichamt Leipzig Kalibrierlaboratorium

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DAkkS D-K-15137-01-00 Leipzig, DE
Kraft Vibration measuring instruments — requir Sound power — survey method (ISO 3746) 1 kN Railway brake — automatic variable load + 3 more
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Stadt Passau Klinikum Passau Institut für Labor- und Transfusionsmedizin

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DAkkS D-ML-22372-01-00 Passau, DE
Großes Blutbild Kleines Blutbild Erythrozyten Hämoglobin Hämatokrit + 3 more
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Steinbeis GmbH & Co. KG für Technologietransfer TQI Metricon Kalibrierservice

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DAkkS D-K-11200-01-00 Gosheim, DE
Lehrdorne Durchmesser 1 mm Lehrringe Prüfstifte Messschieber für 0 mm + 3 more
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Stockmann Prüf- und Qualitätszentrum

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DAkkS D-K-15212-01-01 Leubingen, DE
Parallelendmaße aus 0,5 mm Parallelendmaße aus Keramik nach 0,5 mm Wolframkarbid nach 0,5 mm DIN EN ISO 3650:1999 + 3 more
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Studenroth Präzisionstechnik

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DAkkS D-K-15146-01-01 Schöneck-Kilianstädten, DE
− Parallelendmaße − Durchmesser − Längenmessmittel Railway brake — magnetic track brakes (U − Längenmessgeräte + 3 more
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Städtisches Klinikum Dessau Institut für Klinische Chemie und Laboratoriumsdiagnostik

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DAkkS D-ML-17443-01-00 Dessau-Roßlau, DE
WBC (Leukozyten) RBC (Erythrocyten) HGB (Hb) HCT (Hk) PLT (Thrombozyten) + 3 more
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Suchy Messtechnik

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DAkkS D-K-23061-01-01 Lichtenau, DE
Druck 50 mbar Absolutdruck Pabs > 1,3 bar > 2,5 bar > 0,6 bar + 3 more
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SysKal

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DAkkS D-K-21604-01-00 Steinheim an der Murr, DE
Hexagon Metrology Raumdiagonale von GmbH, Wetzlar, D ≤ 1500 mm Polyworks, Software von InnovMetric, Lindau, D PowerINSPECT, Software + 3 more
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Sächsisches Institut für die Druckindustrie GmbH -Institut des Vereins POLYGRAPH Leipzig e. V. - Prüflabor

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DAkkS D-PL-11119-01-00 Leipzig, DE
ISO 5-3 ISO 12647-1 ISO 13655
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Sächsisches Textilforschungsinstitut e. V. Prüfstelle

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DAkkS D-PL-11239-01-05 Chemnitz, DE
ISO 3074 DIN EN ISO 1833-4 DIN EN ISO 1833-5 DIN EN ISO 1833-6 DIN EN ISO 1833-7 + 3 more
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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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