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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EDAG Engineering GmbH Versuch Böblingen

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DAkkS D-PL-11061-01-03 Böblingen, DE
DIN EN IEC 60068-2-5 DIN EN 60068-2-14 DIN EN 60068-2-30 DIN EN IEC 60068-2-38 DIN EN 60068-2-53 + 3 more
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EDAG Engineering GmbH Versuch Ingolstadt

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DAkkS D-PL-11061-06-00 Ingolstadt, DE
DIN EN 60068-2-14 DIN EN 60068-2-30 DIN EN ISO 6270-2 IEC 60512-1-1 IEC 60512-2-1 + 3 more
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ELLAB

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DAkkS D-K-20746-01-00 Bockel, DE
Taupunkttemperatur Widerstandssensor –100 °C bis > 140 °C bis > 240 °C bis + 3 more
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EMCCons RASEK

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DAkkS D-PL-12067-01-02 Ebermannstadt, DE
IEC 61000-4-2: 2008 IEC 61000-4-3: 2006 IEC 61000-4-4: 2012 IEC 61000-4-5: 2005 IEC 61000-4-6: 2013 + 3 more
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EMCCons RASEK

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DAkkS D-K-12067-01-01 Unterleinleiter, DE
- Gleichspannung > 0,12 V Vorverstärker > 1,2 V > 12 V > 120 V + 3 more
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EP EHRLER PRÜFTECHNIK ENGINEERING

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DAkkS D-K-21444-01-01 Niederstetten, DE
Railway brake — anti-slide device (UIC 5 Railway brake — magnetic track brakes (U Railway brakes — conditions for homologa Railway brakes — disc brake pads (UIC 54 − Durchfluss von Gasen + 3 more
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ETAS

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DAkkS D-K-19158-01-00 Stuttgart, DE
- Gleichspannung Quellen und Messgeräte > 1 mV bis > 10 mV bis > 100 mV bis > 10 V bis + 3 more
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Eckert & Ziegler Nuclitec

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DAkkS D-K-15203-01-01 Braunschweig, DE
Aktivität 20 Bq > 20 Bq Spezifische Aktivität radioaktiver Lösungen 20 Bq·g + 3 more
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Elektro Struß

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DAkkS D-K-15196-01-01 Nordenham, DE
Gleichspannung 30 mV / Messgeräte > 0,33 V > 3,3 V > 33 V + 3 more
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Elektro Wilhelm

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DAkkS D-K-20306-01-00 Weinstadt, DE
Taupunkttemperatur für Widerstands- ˃ 500 °C - Direktanzeigende Thermometer Thermoelemente ˃ 500 °C Widerstands- -50 °C + 3 more
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Element Materials Technology Straubing GmbH Element Materials Technology Straubing

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DAkkS D-PL-12155-01-01 Straubing, DE
IEC 61000-4-2: 2008 IEC 61000-4-3: 2006 IEC 61000-4-4: 2012 IEC 61000-4-5: 2005 IEC 61000-4-6: 2013 + 3 more
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Element Metech

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DAkkS D-K-15020-04-01 Norderstedt, DE
/ Messgeräte 0,001 V > 0,22 V > 2,2 V > 22 V + 3 more
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Element Metech KDK

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DAkkS D-K-15180-01-01 Wiesloch, DE
Elektrische Messgrößen Gleichstrom- und Niederfrequenzmessgröße Railway brake — magnetic track brakes (U − Gleichspannung − Gleichstromstärke + 3 more
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Elster

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DAkkS D-K-19495-01-01 Mainz-Kastel, DE
Durchfluss von Gasen 0,5 m³/h Volumendurchfluss > 4 m³/h Railway overhead lines — pantograph head > 10 m³/h + 3 more
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Endolab Mechanical Engineering

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DAkkS D-PL-18838-02-01 Riedering, DE
DIN EN ISO 14607 DIN EN 13687-2 DIN EN ISO 15912 ASTM E290-22 DIN EN ISO 19023 + 3 more
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Endress+Hauser SE+

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DAkkS D-PL-15172-01-00 Maulburg, DE
IEC 61000-4-2: 2008 IEC 61000-4-3: 2006 IEC 61000-4-4: 2012 IEC 61000-4-5: 2005 IEC 61000-4-6: 2013 + 3 more
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Entwicklungs- und Prüflabor Holztechnologie

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DAkkS D-PL-11054-01-00 Dresden, DE
CDC73 (NM_000384: c.1-c.82) ID152 EN ISO 11925-2 DIN EN 350 + 3 more
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Erichsen Gesellschaft mit beschränkter Haftung & Co. Kommanditgesellschaft

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DAkkS D-K-21247-01-01 Hemer, DE
Innen- und Tiefenmaße Konventioneller 0,11 G > 2 G > 5 g + 3 more
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Esenwein

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DAkkS D-K-15168-01-00 Hochdorf, DE
/ Messgeräte > 220 mV Quellen > 0,2 V 120 V 200 V + 3 more
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Eurofins Laborbetriebsgesellschaft Gelsenkirchen

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DAkkS D-ML-17481-01-01 Gelsenkirchen, DE
Thrombozytenfunktion Agomelatin Amisulprid (Psychopharmaka) Amitriptylin (TZA) Aripiprazol (Neuroleptika) + 3 more
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Eurofins MVZ Medizinisches Labor Gelsenkirchen

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DAkkS D-ML-17480-01-01 Gelsenkirchen, DE
Thrombozytenfunktion Agomelatin Amisulprid (Psychopharmaka) Amitriptylin (TZA) Aripiprazol (Neuroleptika) + 3 more
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Eurofins Product Service

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DAkkS D-PL-12092-01-02 Reichenwalde, DE
DIN EN IEC 61000-6 DIN EN IEC 61000-3 DIN EN 61000-3 EN IEC 61000-4 ISO 13766-1: 2018 + 3 more
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Evangelisches Klinikum Niederrhein Laboratoriumsmedizin

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DAkkS D-ML-20007-01-00 Duisburg, DE
Glykohämoglobin A1C (HbA1c) Basophile Granulozyten Eosinophile Granulozyten Erythrozytenverteilungsbreite (RDW) + 3 more
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Evangelisches Krankenhaus Oberhausen GmbH Institut für Laboratoriumsmedizin und Klinische Mikrobiologie

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DAkkS D-ML-18340-01-00 Oberhausen, DE
Blutzellen Basophile Granulozyten Basophile Granulozyten, Eosinophile Gran Eosinophile Granulozyten, Erythrozyten, Basophile Leukozyten, absolut + 3 more
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F.S. Fehrer Automotive

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DAkkS D-PL-21199-01-01 Kitzingen, DE
DIN EN ISO 1798 DIN EN ISO 1856 Myopathie, Nemaline (TyP1, 3-10: DIN EN ISO 14125 DIN EN ISO 179-1 + 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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