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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DAkkS D-PL-19965-01-00 Greifenberg, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3
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Ahlborn Meß- und Regelungstechnik

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Taupunkttemperatur Railway braking — urban guided transport Temperaturtransmitter Widerstandssensor *) –30 °C + 3 more
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Airbus Defence and Space

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DAkkS D-K-18731-01-01 Manching, DE
- Gleichspannung / Messgeräte 1 µV Quellen > 1 V + 3 more
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Akustik + Bauphysik Süd Burkhart und Partner Beratende Ingenieure PartGmbB

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DAkkS D-PL-22800-01-00 Pöcking, DE
DIN 4150-2 DIN 4150-3
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Akustikbüro Dahms

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DAkkS D-PL-20065-01-00 Potsdam, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3 DIN EN 61400-11
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Alleima

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DAkkS D-PL-11123-01-02 Werther (Westf.), DE
DIN EN ISO 6506-1 ASTM E 10-18 DIN EN ISO 6508-1 ASTM E 18-22 DIN EN ISO 6507-1 + 3 more
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Allgäuer Messzentrum

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DAkkS D-K-19562-01-01 Kaufbeuren, DE
Durchmesser 1 mm 510 mm Rundheitsabweichung 1 mm Parallelitätsabweichung Rundheitsabweichung + 3 more
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Ambulanzzentrum des UKE GmbH Fachbereich Humangenetik

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Amphenol-Tuchel Electronics Gesellschaft mit beschränkter Haftung Prüflaboratorium

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DAkkS D-PL-20258-01-01 Heilbronn, DE
IEC 60512-1-1 IEC 60512-1-2 IEC 60512-2-1 IEC 60512-2-2 IEC 60512-2-5 + 3 more
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Analytik Institut Rietzler GmbH Laborstandort und Emissionsmessstelle Fürth

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DAkkS D-PL-14501-01-03 Fürth, DE
DIN 19698-1 DIN 19698-2 DIN EN ISO 54321 DIN EN 1744-3 DIN EN 12457-2 + 3 more
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Aptiv Services Deutschland

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DAkkS D-PL-11092-02-01 Wiehl-Bomig, DE
IEC 61000-4-2: 2008 IEC 61000-4-21 EN IEC 62311 ISO 11452-2: 2019 ISO 11452-4: 2020 + 3 more
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Aptiv Services Deutschland GmbH Electrical/Electronic Validation PEEPV

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DAkkS D-PL-11092-04-01 Wuppertal, DE
IEC 62752 IEC 61851-1: 2010 IEC 60068-2-1 IEC 60068-2-2 IEC 60068-2-6 + 3 more
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Aptiv Services Deutschland GmbH PT&V Labor Nürnberg

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DAkkS D-PL-11092-01-00 Nürnberg, DE
IEC 60352-2 IEC 60352-5 IEC 60512-6-3 DIN EN 60512-7-1 IEC 60512-15-1 + 3 more
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As-Wägetechnik

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DAkkS D-K-17702-01-00 Garching, DE
Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO Radiated emissions (CISPR 32) 1) In den CMC sind die erweiterten Messu
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Ashcroft Instruments

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Absolutdruck p abs 0,015 bar > 2 bar > 42 bar Absolutdruck Pabs 1 bar; 2 bar + 3 more
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Aspect Quality

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DAkkS D-PL-22860-01-01 Reutlingen, DE
DIN 55635 VDE 0468-2-14 VDE 0468-2-1 VDE 0468-2-5 DIN EN 60068-2-30 + 3 more
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Atlas Copco Tools Central Europe

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DAkkS D-K-17447-01-01 Essen, DE
Conformity assessment — requirements for Druckkraftrichtung Drehmoment 0,01 N∙m Drehmomentaufnehmer * Drehmomentmessgeräte * + 3 more
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BAU-ZERT e.V. Materialprüfinstitut Nord

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DAkkS D-PL-17407-01-00 Großburgwedel, DE
DIN EN 1766 DIN EN 12390-1 DIN EN 12390-2 DIN EN 12390-3 DIN EN 12390-5 + 3 more
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BCS Automotive Interface Solutions

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DAkkS D-PL-12028-01-00 Radolfzell am Bodensee, DE
IEC 61000-4-2: 2008 ISO 11452-2: 2019 ISO 11452-3 ISO 11452-4: 2020 ISO 11452-5: 2002 + 3 more
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BEKON Lärmschutz & Akustik

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DAkkS D-PL-20433-01-00 Augsburg, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3
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BESB GmbH Berlin Schalltechnisches Büro

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DAkkS D-PL-19685-01-00 Berlin, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3
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BFSV Verpackungsinstitut Hamburg

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DAkkS D-PL-19253-01-00 Hamburg, DE
DIN 52186 ISO 21527-1 DIN EN ISO 527-3 IEC 61924-2 DIN EN 62233 + 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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