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
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Perschmann Calibration

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DAkkS D-K-15089-01-01 Braunschweig, DE
Parallelendmaße * 0,5 mm DIN EN ISO 3650:1999 > 100 mm Sonderquerschnitt (rund Parallelendmaße * > 100 mm + 3 more
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Peutz Consult

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DAkkS D-PL-20140-01-00 Düsseldorf, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3
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PfB GmbH & Co. Prüfzentrum für Bauelemente

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DAkkS D-PL-17012-01-00 Stephanskirchen, DE
DIN EN 1932 DIN EN 12179 DIN EN 12211 DIN EN 12444 ASTM E547-00 + 3 more
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Pharmaserv GmbH Kalibrierlabor

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DAkkS D-K-18321-01-00 Marburg, DE
Temperaturmessgrößen Widerstandsnormal thermometer (IPRT) Zeiss Industrielle Temperaturmessgrößen −35 °C + 3 more
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Phoenix Contact GmbH & Co. KG Laboratory Device Connectors

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DAkkS D-PL-12161-01-00 Blomberg, DE
IEC 61984 IEC 60998-1 IEC 60998-2-1 IEC 60998-2-2 IEC 60998-2-3 + 3 more
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Pilz GmbH & Co. KG Prüflabor

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DAkkS D-PL-12033-01-01 Ostfildern, DE
IEC 61000-4-11: 2004 IEC 61000-4-29: 2000 IEC 61000-6-2: 2005 IEC 61000-6-4: 2006 IEC 61496-1: 2012 + 3 more
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Polytest Ingenieure

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DAkkS D-PL-21123-01-02 Fürth, DE
DIN EN ISO 9934-1 DIN ISO 815-1 DIN ISO 815-2 DIN ISO 4593 DIN EN 50178: 1998 + 3 more
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Power Diagnostix Systems

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DAkkS D-K-15068-01-00 Aachen, DE
Impulsladung Anstiegszeit Impulsdauer Wechselspannung 1 V > 1,1 kV + 3 more
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Praxis für Labormedizin, med. Thomas Müller

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DAkkS D-ML-13079-01-00 Aschaffenburg, DE
Differentialblutbild Erythrozyten Hämatokrit Leukozyten Retikulozyten + 3 more
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Preh

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DAkkS D-PL-18171-01-01 Bad Neustadt a.d. Saale, DE
DIN EN 55025: 2018 IEC 61000-4-4: 2012 VDE 0847-4-4 IEC 61000-4-5: 2005 VDE 0847-4-5 + 3 more
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Privatärztliche Gemeinschaft für Diagnostik Köln-Bonn

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DAkkS D-ML-19686-01-00 Köln, DE
HbA1c Automatisches Blutbild Leukozyten Normoblasten Retikulozyten + 3 more
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Privatärztliche Laborgemeinschaft Köln

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DAkkS D-ML-22827-01-01 Köln, DE
Calcium Bilirubin gesamt Creatinkinase-Muscle-Brain TPZ nach Quick Immunglobulin A + 3 more
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ProfEC Ventus

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DAkkS D-PL-19142-01-00 Oldenburg, DE
IEC 61400-12 Ed.1 * IEC 61400-12-1 Ed.3 * IEC 61400-12-3 Ed.1 * IEC 61400-12-4 Ed.1 * IEC 61400-12-5 Ed.1 * + 3 more
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Prüfstelle für Betonstahl - Gallus Rehm

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DAkkS D-PL-18743-01-01 München, DE
ISO 15835-2 UNE-EN 10002-1 BS EN ISO 15630-1:2019 UNE-EN 10080 BS EN ISO 15630-3:2019 + 3 more
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QS-Grimm

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DAkkS D-K-15159-01-01 Gutach Schwarzwaldbahn, DE
Parallelendmaße * 0,5 mm DIN EN ISO 3650:1999 Zylindrische Normale 1 mm Innenzylinder * > 100 mm + 3 more
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Qopas

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DAkkS D-K-12048-01-00 Driedorf, DE
Koordinatenmessgeräte geräte mit einem Chorus, Help-PJM von DEA Hexagon Metrology S.p.A., Turin, I Associates EMS Products, ≤ 1500 mm + 3 more
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Questmed

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DAkkS D-PL-18753-02-00 Kleinmachnow, DE
ISO 22679 ISO 7207-1 ISO 14243-1 ISO 14243-2 ISO 14243-3 + 3 more
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RIO

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DAkkS D-K-17376-01-00 Siegen, DE
Parallelendmaße * 0,5 mm DIN EN ISO 3650:1999 > 100 mm > 500 mm > 550 mm + 3 more
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RMA Mess- und Regeltechnik

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DAkkS D-K-20908-01-00 Rheinau, DE
Durchfluss von Gasen Volumendurchfluss 50 m³/h Railway brakes — brake performance (UIC (Hochdruck Erdgas 5 bis 51 bar) + 1 more
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ROTA YOKOGAWA

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DAkkS D-K-17720-01-00 Wehr, DE
Masse m strömender − Durchfluss von Flüssigkeiten Durchfluss von 1) In den CMC sind die erweiterten Messu Massedurchfluss dm / dt + 3 more
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RST Rail System Testing

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DAkkS D-PL-11012-01-05 Hennigsdorf, DE
ISO 16750-5 ISO 20653 DIN EN ISO 2812-1 DIN EN ISO 2813 DIN EN ISO 6270-2 + 3 more
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Regierungspräsidium Kassel Hessische Geräteuntersuchungsstelle

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DAkkS D-PL-19353-02-02 Kassel, DE
IEC 60335-1: 2010 VDE 0700-1 DIN EN 60335-2-2 DIN EN 60335-2-3: 2002 DIN EN 60335-2-4 + 3 more
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Rhein-Ruhr Feuerstättenprüfstelle

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DAkkS D-PL-17727-01-00 Oberhausen, DE
DIN EN 1860-1 DIN EN 12815 DIN EN 13229 DIN EN 13240 DIN EN 14059 + 3 more
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Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau (RPTU) Materialprüfamt

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DAkkS D-PL-11051-01-01 Kaiserslautern, DE
DIN EN 1926 DIN EN 12372 DIN EN 13161 DIN EN 13364 DIN EN 1015-11 + 3 more
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Robert Bosch Gesellschaft mit beschränkter Haftung Zuverlässigkeitslabor XC/QMM-VR2

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DAkkS D-PL-12104-04-01 Hildesheim, DE
IEC 61000-4-2: 2008 IEC 61000-4-3: 2006 IEC 61000-4-6: 2013 IEC 61000-6-1 IEC 61000-6-2: 2005 + 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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