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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K-UTEC AG Salt Technologies Abteilungen chemisch-physikalische Analytik & Geophysik

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DAkkS D-PL-14237-01-01 Sondershausen, DE
DIN EN 13346 DIN EN 27888 DIN 38404 DIN EN 26777 DIN 38405-24 + 3 more
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K. A. Schmersal

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DAkkS D-PL-12119-01-00 Wuppertal, DE
DIN EN IEC 60947-5 IEC 60947-5-1 IEC 60947-5-2 DIN EN 60947-5 IEC 60947-5-3 + 3 more
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KALITEO

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COFRAC 1-5835 Gasny, FR
DIN EN 27888 NF X 31-615 (Uniquement DIN EN ISO 10523
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KB Prüftechnik

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DAkkS D-K-17233-01-00 Hochdorf-Assenheim, DE
Härteprüfmaschinen nach 100 HBW Brinell- und 226 HBW messeinrichtungen von Härteprüfmaschinen + 3 more
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KEMA

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RvA I049 Arnhem, NL
IEC 60034 IEC 60034-2-1 IEC 60034-18-1 IEC 60034-4-1 IEC 60034-27-1 + 3 more
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KFE Kompetenzzentrum Fahrzeug Elektronik

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DAkkS D-PL-20211-01-00 Lippstadt, DE
IEC 61000-4-4: 2012 IEC 61000-4-5: 2005 IEC 61000-4-6: 2013 EN IEC 62311 DIN EN IEC 60068-2-11 + 3 more
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KLG Krankenhaus-Labor-Gesellschaft

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DAkkS D-ML-13391-01-00 Frankfurt am Main, DE
basophile, eosinophile, Granulozyten Differenzialblutbild Erythrozyten Erythrozytenverteilungsbreite (RDW) + 3 more
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KP Acoustics Research Labs

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UKAS 29792 Southampton, GB
BS EN ISO 10140-2:2021 ISO 3745 ISO 7171 IEC 60601-1 accordance with BS EN ISO 5349-1
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KREBS+KIEFER Ingenieure GmbH Abteilung Immissionsschutz Anlagen

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DAkkS D-PL-21991-01-00 Darmstadt, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3
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KRIWAN Testzentrum

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DAkkS D-PL-12091-01-01 Forchtenberg, 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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Kalibra International

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RvA K088 Delft, NL
HCS LF 6 0 HCS LF 2 0 HCS LF 6 2 HCS LF 1 0 HCS LF 3 0 + 3 more
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Kapraun Prüfdienst

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DAkkS D-K-20795-01-01 Waldaschaff, DE
Railway brake — magnetic track brakes (U − Ebenheit − Geradheit − Winkelnormale auch als Vor-Ort-Kalibrierung + 3 more
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Karlsruher Institut für Technologie Institut für Elektroenergiesysteme und Hochspannungstechnik (IEH)

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DAkkS D-PL-11068-09-00 Karlsruhe, DE
DIN EN 60034-15 VDE 0530-15 IEC 60034-15 DIN EN 60044-7 VDE 0414-44-7 + 3 more
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Karlsruher Institut für Technologie Sicherheit und Umwelt (SUM) Kalibrierlabor

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DAkkS D-K-11068-01-00 Eggenstein-Leopoldshafen, DE
Luftkerma/-leistung Dosis Dosisleistung
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Kern & Sohn

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DAkkS D-K-19408-01-01 Balingen, DE
nichtselbsttätige − Waagen Festkörpervolumen Wägewert/ Masse oder + 3 more
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Kessler QMP

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DAkkS D-K-15118-01-01 Friedewald, DE
Parallelendmaße * 0,5 mm DIN EN ISO 3650:1999 Parallelendmaße * Einstelldorne * 1 mm Railway maintenance — track geometry (EN + 3 more
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Keysight Technologies Deutschland GmbH Hardware Test Center Europe

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DAkkS D-PL-19882-01-02 Böblingen, DE
DIN EN 61010-1 VDE 0411-1 IEC 61010-1 : 2010 EN IEC 61010-2 VDE 0411-2-010 + 3 more
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Keysight Technologies Netherlands Riscure

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RvA L605 Delft, NL
IEC 18045 IEC 15408-1
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KfH KURATORIUM FÜR DIALYSE UND NIERENTRANSPLANTATION Zentrale Servicestelle - Kalibrierlabor

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DAkkS D-K-22363-01-01 Wiesbaden, DE
- Gleichspannung / Messgeräte Spannungsquellen - Gleichstromstärke - Gleichstromwiderstand + 3 more
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Kistler Instrumente

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DAkkS D-K-15127-01-01 Sindelfingen, DE
Beschleunigung* Beschleunigungsmessketten (Bezugsfrequenzen) (Mittelfrequenzbereich) Beschleunigungsaufnehmer, 0,1 m/s + 3 more
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Kiwa Assurance

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RvA L447 Rijswijk Zh, NL
EN ISO 11925-2 DIN EN ISO 13162 DIN EN 14509 DIN EN ISO 13163 DIN EN 1604 + 3 more
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Kiwa

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DAkkS D-PL-11217-01-02 Berlin, DE
DIN EN ISO 7438 DIN 50100 ISO 9352 DIN ISO 48-4 DIN EN ISO 1675 + 3 more
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Kiwa

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UKAS 8896 Rasssau, GB
DIN EN 13079 BS 1212-4:1991 Clause 4, 13, 14 DIN EN 14622 BS 1212-3:1990 Clause 4 DIN EN 14623 + 3 more
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Kiwa

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UKAS 2360 Brentwood, GB
DIN EN 55011: 2018 IEC/CISPR 22 DIN EN 55016-2-1 IEC 61326-2-2: 2012 IEC 61000-6-1 + 3 more
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Kiwa

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UKAS 0692 Cheltenham, GB
DIN EN 16510-2-3 DIN EN 16510-2-1 DIN EN 13229 DIN EN 16510-1 DIN EN 13240 + 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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