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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OHS

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UKAS 21882 Manchester, GB
(HSG 264, 2012)
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OLM Klimalabor

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DAkkS D-PL-21332-01-00 Allershausen, DE
DIN EN 60068-2-14 DIN EN 60068-2-30 DIN EN IEC 60068-2-38 DIN EN-60068-2-1 DIN EN-60068-2-2
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ONNEKEN Meß- und Prüftechnik

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DAkkS D-K-15218-01-00 Friedrichsdorf (Taunus), DE
Druck 0,03 bar Absolutdruck Pabs > -0,3 bar > 3,0 bar > −0,02 bar + 3 more
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OPTOLUTION Messtechnik

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DAkkS D-K-20427-01-00 Lörrach, DE
− Wärmezähler Durchflusssensoren als Teilgeräte von Wärme- und Kältezählern: + 3 more
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OSRAM GmbH Environmental Simulation Laboratory

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DAkkS D-PL-17666-03-00 Herbrechtingen, DE
DIN EN IEC 60068-2-5 DIN EN IEC 60068-2-11 IEC 60068-2-14 DIN EN 60068-2-30 DIN EN IEC 60068-2-38 + 3 more
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OTECH Environnement

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COFRAC 1-5809 Bruay La Buissiere, FR
DIN EN 27888 NF X 31-615 (Uniquement DIN EN ISO 10523
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Ober Berg & Lukowiak

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DAkkS D-PL-12032-01-02 Hüllhorst, 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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Oelze Präzisions-Meßzeugfabrik

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DAkkS D-K-15021-01-01 Aschaffenburg, DE
Railway brake — magnetic track brakes (U − Ebenheit − Geradheit − Winkelnormale auch als Vor-Ort-Kalibrierung + 3 more
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Offshore Renewable Energy Catapult

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UKAS 2769 Blyth, GB
IEC 61400-23 ASTM G73 (2012) IEC 60885-3, 2.4.1 IEC 60502-2 IEC 60840 + 3 more
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Omgevingsdienst Midden- en West-Brabant

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RvA I073 Tilburg, NL
ISO 11819-1 (N 2 O) 0,000008 DIN EN ISO 16911-1 AG2 and IS EN 15259:2007 DIN EN 14790 + 3 more
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One Scientific

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UKAS 2048 Avonmouth, GB
ISO 6888-1 ISO 21528-2 BS ISO 4832:2006 ISO 4833-1 ISO 6579-1 + 3 more
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Optical Test & Calibration

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UKAS 0286 Bradford, GB
DC Resistance DC CURRENT DC VOLTAGE DC RESISTANCE (cont’d)
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Oracle Solutions Asbestos

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UKAS 4600 Kettering, GB
(HSG 264, 2012)
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Ostthüringische Materialprüfgesellschaft für Textil und Kunststoffe mbH Rudolstadt (OMPG)

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DAkkS D-PL-11118-01-01 Rudolstadt, DE
DIN EN 1264-5 DIN EN 13647 DIN EN 71-10 DIN EN 50642 DIN EN ISO 14184-2 + 3 more
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Oxford Technical Solutions

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UKAS 4647 Upper Heyford, GB
UNITS
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P & B INSTRUMENTS TÉCNICAS DE MEDIDA Y CONTROL

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ENAC LC10.126 Sant Fruitós de Bages, ES
CEM ME-003
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P&P LMC Srl

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ACCREDIA 00403 Seriate, IT
DIN EN ISO 11885 DIN EN ISO 15587-2 DIN EN ISO 10523 DIN EN 60068-2-57 IEC 62271-207 + 3 more
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PA Group (UK)

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UKAS 4265 Dartford, GB
(HSG 264, 2012)
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PAConsult

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DAkkS D-PL-11130-01-02 Hamburg, DE
DIN 55440-1 DIN EN 22248 DIN EN 868-5 DIN EN 22876 DIN EN ISO 2234 + 3 more
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PCB Piezotronics GmbH Abteilung Kalibrierlabor (Calibration & Repair)

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DAkkS D-K-19664-01-00 Hückelhoven, DE
Beschleunigung zu 25 mV bis 1 V (Sekundär) Schwingungsaufnehmer Schwingungsmessgeräte 0,1 m/s + 3 more
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PEHLA GmbH PEHLA Prüffeld Berlin Siemensstadt

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DAkkS D-PL-12072-08-01 Berlin, DE
IEC 62271-1: 2017-07 IEC 62271-100: 2021 IEC 62271-101 IEC 62271-110 IEC 62271-111 + 3 more
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PEHLA GmbH PEHLA-Prüffeld Frankfurt/Main

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DAkkS D-PL-12072-01-00 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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PEHLA GmbH PEHLA-Prüffeld Ratingen

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DAkkS D-PL-12072-06-01 Ratingen, DE
DIN EN 61869-1 IEC 61869-1 DIN EN 61869-2 VDE 0414-9-2 IEC 61869-2 + 3 more
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PETROLAB GmbH Laboratorium für Mineralöl- und Umweltanalytik

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DAkkS D-PL-14361-01-01 Speyer, DE
DIN EN ISO 12185 ASTM D 4052 DIN EN ISO 3405 ASTM D 86 DIN EN 13016-1 + 3 more
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PHH Environmental (UK)

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UKAS 0384 Cardiff, GB
HSG 227 (2004)) (HSG 264, 2012) HSG 264 (2012) and Appx. 3 of (HSG 248) – 2021 (PCM) based on HSG 248
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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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