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
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Robert Koch-Institut

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DAkkS D-ML-13113-01-01 Berlin, DE
Salmonellen Salmonella enterica, Shigellen, Yersinie Shigellen Salmonella sv. Paratyphi Neisseria meningitidis, Listeria + 3 more
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Rolf Langenscheid GmbH Waagensystemtechnik

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DAkkS D-K-21801-01-00 Lüdenscheid, DE
Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO elektronische Waagen 1) In den CMC sind die erweiterten Messu
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RoodMicrotec GmbH Abt. QTAL Qualification & Reliability

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DAkkS D-PL-12120-01-01 Nördlingen, DE
IEC 60068-2-14 IEC 60068-2-20
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Roto Frank Fenster- und Türtechnologie GmbH Internationales Technologie Center

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DAkkS D-PL-21397-01-01 Leinfelden-Echterdingen, DE
DIN EN 1026 DIN EN 1027 DIN EN 1191 DIN EN 12211 DIN EN 13126-8 + 3 more
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Ruhr Lab

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DAkkS D-PL-21007-01-00 Gelsenkirchen, DE
ISO 13909-2 ISO 13909-3 ISO 13909-5 ISO 13909-7 ISO 13909-8 + 3 more
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Ruhr Oel GmbH BP Gelsenkirchen

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DAkkS D-PL-19612-01-00 Gelsenkirchen, DE
DIN EN ISO 12185 DIN EN ISO 3405 DIN EN 13016-1 DIN EN ISO 20884 DIN EN ISO 20846 + 3 more
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Ruhr-Universität Bochum Humangenetik RUB

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DAkkS D-ML-13425-01-00 Bochum, DE
Spinocerebelläre Ataxien Bindegewebserkrankungen: ACTA2, COL1A1, HD; Chorea Huntington (Huntingtin-Gen) Dentatorubrale-Pallidoluysiane + 3 more
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S.K.I. Schlegel & Kremer Industrieautomation GmbH Kalibrierlabor

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DAkkS D-K-21982-01-00 Mönchengladbach, DE
Durchfluss von 2 m3/h bis 800 rn3/h − Durchfluss von Flüssigkeiten Volumendurchfluss dV/dt von strörnenden + 3 more
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SBKS

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DAkkS D-PL-11303-01-01 St. Wendel, DE
DIN 53394-2 DIN 53176 DIN EN ISO 1172 ASTM D 5576 IEC 60512-11-4 + 3 more
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SCHÜCO International KG Technology Center

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DIN EN ISO 717-1 DIN EN ISO 10052 DIN EN ISO 10140-1 DIN EN ISO 10140-2 DIN EN ISO 10140-4 + 3 more
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SCUS

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DAkkS D-PL-11195-01-00 Dresden, DE
DIN EN ISO 12048 DIN 55440-1 ASTM D642 ASTM D4169 DIN EN ISO 2234 + 3 more
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SGS Germany

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DAkkS D-PL-11020-03-01 Puchheim, 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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SGS Germany GmbH Oil, Gas and Chemicals, Fuel Technology Centre

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DAkkS D-PL-11020-01-00 Speyer, DE
DIN 51757 ASTM D 4052 DIN EN ISO 12185 DIN EN ISO 3405 DIN EN 13016-1 + 3 more
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SGS INSTITUT FRESENIUS

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DAkkS D-PL-14115-02-09 Taunusstein, DE
DIN EN ISO 2639 DIN EN ISO 6507-1 DIN EN ISO 6508-1 DIN EN 10328 DIN 50190-3 + 3 more
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SIANTEC- Silvio Herzog e. K.

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DAkkS D-K-20004-01-00 Haiger-Dillbrecht, DE
Härte (WPM) 80 HBW und Knoop-Verfahren 150 HV (Härteskalen HV5 bis HV100) 150 HV (Härteskalen HV 0,1 bis HV 3) + 3 more
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SICK AG Corporate Test Center

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DAkkS D-PL-20745-02-00 Waldkirch, DE
ISO 20653 IEC 60068-2-1 IEC 60068-2-2 DIN EN IEC 60068-2-5 IEC 60068-2-6 + 3 more
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SKD GmbH System Kalibrier Dienst

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DAkkS D-K-17733-01-01 Hornberg, DE
Absolutdruck Pabs > 0,05 bar Negativer und positiver Überdruck p (ein- oder mehrgängige + 1 more
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SKZ - Testing

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DAkkS D-PL-19033-01-01 Würzburg, DE
Bauart wie GR 1482 DIN ISO 48-4 DIN ISO 7619-2 DIN EN ISO 868 DIN EN ISO 2039-1 + 3 more
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SLG Prüf- und Zertifizierungs

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DAkkS D-PL-15110-01-02 Hartmannsdorf, DE
IEC 61000-4-2: 2008 IEC 61000-4-3: 2006 DIN EN IEC 61000 IEC 61000-4-4: 2012 IEC 61000-4-5: 2005 + 3 more
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SLM - Speziallabor für angewandte Mikrobiologie

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DAkkS D-PL-18176-01-02 Berlin, DE
DIN EN ISO 11737-2 DIN 58953-6 DIN 1946-4 DIN EN 13959 DIN EN ISO 8536-4 + 3 more
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SMA Solar Technology

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DAkkS D-PL-12074-01-01 Niestetal, 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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SPEKTRA Schwingungstechnik und Akustik GmbH Dresden

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DAkkS D-K-15183-01-02 Dresden, DE
Akustische Messgrößen* Schalldruckpegel (Freifeld), (bezogen au Freifeld-Leerlauf- oder 125 Hz ˃ 250 Hz mit / ohne Windschirm > 8 kHz + 3 more
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SPIE SAG GmbH Versuchs- und Technologiezentrum

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DAkkS D-PL-17453-01-00 Langen, DE
DIN EN ISO 898-2 DIN EN ISO 6506-1 DIN EN ISO 6507-1 DIN EN ISO 6508-1 DIN EN 14726 + 3 more
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SPS electronic

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DAkkS D-K-20497-01-01 Twist, DE
- Gleichspannung Messgeräte 1 mV > 330 mV 3,3 V Messgeräte 0,33 V + 3 more
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SSW Prüfsysteme und Service GmbH Weißberg

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DAkkS D-K-17475-01-00 Hilden, DE
Vibration measuring instruments — test m Vibration measurements near traffic — me Härteprüfmaschinen Acoustics — tonality assessment (DIN 456 Noise measurement on railway vehicles — + 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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