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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Deutsches Zentrum für Luft- und Raumfahrt Institut für Raumfahrtsysteme

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DAkkS D-PL-11223-02-01 Bremen, DE
DIN EN 60068-2-64 DIN EN 61373 ECSS-E-ST-10-03C DIN EN-60068-2-27 DIN EN-60068-2-6
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Devonport Royal Dockyard

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UKAS 0254 Plymouth, GB
Specific Values 1  RF Power RF Attenuation 10 MHz to 1 GHz Other values -20 dBm to +20 dBm
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Devonport Royal Dockyard

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UKAS 0687 Devonport, GB
BS 4206:1967 (superseded) ISO 5173 ISO 7438 BS EN ISO 9606-2:2004 BS 131-5:1965 + 3 more
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Diagenom

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DAkkS D-ML-18903-01-00 Rostock, DE
Chromosomensatz (angeboren) Chromosomensatz (erworben) Adrenogenitales Syndrom Angelman-Syndrom (15q11-Region, UBE3A) Mikrodeletionen; AZFa-c) + 3 more
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Diagnos MVZ

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DAkkS D-ML-21150-01-00 Berlin, DE
HbA1c Differentialblutbild, maschinell Retikulozyten, maschinell Kleines Blutbild Thrombozyten + 3 more
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Diehl Metering

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DAkkS D-K-19516-01-00 Ansbach, DE
Volumen strömender 0,0005 m − Durchfluss von Flüssigkeiten 0,025 m Wasserzähler und 0,001 m Durchflusssensoren + 3 more
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Dipartimento di Sanità Pubblica URD Igiene Medicina Preventiva e Statistica Sanitaria - Università degli Studi di Napoli Federico II

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ACCREDIA 01333 Napoli, IT
DIN EN ISO 7730 EPA 6020 DIN EN ISO 6888-1 ISO 14698-1 ISO 4832 + 3 more
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Don Whitley Scientific

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UKAS 0560 Bingley, GB
TIME INTERVAL TEMPERATURE parameters and ranges)
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Klinkner & Partner GmbH Kalibrierlabor

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DAkkS D-K-20015-01-01 Lahr, DE
Absolutdruck p * Vickers hardness test (ISO 6507) Flüssigkeitsvolumen * variablem Volumen aufnehmern sowie + 3 more
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Staber & Kollegen

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DAkkS D-ML-13252-01-01 München, DE
Blutbild groß Thrombozyten Urinsediment Natrium Kalium + 3 more
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med. rer. nat. Nils Janzen Screening-Labor Hannover Laborärztliche Facharztpraxis

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DAkkS D-ML-19642-02-00 Ronnenberg, DE
Aminosäureprofil Guanidinoacetat Kreatin Hämoglobinprofil Nitisinon (NTBC), Succinylaceton + 3 more
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Drägerwerk AG & Co. KGaA Product Qualification Kalibrierlabor

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DAkkS D-K-11250-01-00 Lübeck, DE
Druck * Negativer und positiver Überdruck -0,01 bar Positiver Überdruck p e > 0,015 bar + 3 more
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Duravit

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DAkkS D-PL-21217-01-00 Hornberg, DE
*6095991, BAG3 [OMIM *6038831 (-13910T>C) rs4988235 - PiM rs6647, PiZ rs28929474, rs17580 DIN EN 997 DIN EN 13407 + 3 more
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E & C Testlab GmbH (Engineering & Certification Testlab GmbH)

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DAkkS D-PL-19366-01-01 Trossingen, DE
IEC 61000-3-2: 2014 IEC 61000-3-3 IEC 61000-3-11: 2017 IEC 61000-3-12: 2011 IEC 61000-4-2: 2008 + 3 more
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E C L (2000)

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UKAS 0709 Forest Hall, GB
(PCM) based on HSG 248) (HSG 248) – 2021
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E-T-A Elektrotechnische Apparate

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DAkkS D-PL-12144-01-01 Altdorf, DE
VDE 0468-2-1 VDE 0468-2-2 VDE 0468-2-6 DIN EN IEC 60068-2-11 DIN EN IEC 60068-2-13 + 3 more
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E. ZOLLER GmbH & Co. KG Einstell- und Messgeräte

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DAkkS D-K-18994-01-00 Pleidelsheim, DE
optische 0 mm Werkzeugeinstell- und / Messgeräte verwendete Abkürzungen:
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ECOCONTROL SUD

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ACCREDIA 00340 Priolo Gargallo, IT
EPA 3005 DIN EN ISO 6888-1 DIN EN ISO 10304-1 ASTM D5373-21 ISO 4832 + 3 more
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ECOSISTEM

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ACCREDIA 00611 Napoli, IT
DIN EN ISO 9308-2 EPA 5035 DIN EN 14789 EPA 5030 DIN EN 14790 + 3 more
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EDAG Engineering

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DAkkS D-PL-11061-07-01 Wolfsburg, DE
DIN EN 60068-2 ISO 16750-3 IEC 60512-6-2 IEC 60512-6-3 IEC 60512-6-4 + 3 more
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EDAG Engineering GmbH ATC Fulda

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DAkkS D-PL-11061-02-02 Petersberg, DE
DIN 40633-2 DIN 40633-3 DIN 53482 DIN 72551-100 DIN 72551-6 + 3 more
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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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EDP Building Sciences a division of E.D.P. Health, Safety and Environment Consultants

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UKAS 2546 Coventry, GB
BS EN ISO 16283-1:2014+A1:2017BS EN ISO BS EN ISO 16283-2:2020 BS EN ISO 140-4:1998 ISO 1407 BS EN ISO 9972:2015 + 1 more
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EDP Health Safety and Environment Consultants

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UKAS 9982 Waterside Court, GB
and Appx. 3 of HSG 227 (2004)) in Appendix 5 of HSG 227 (2004) guides HSG 264 (2012) and (HSG 264, 2012)
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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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