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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BUREAU D'ETUDE GEOLOGIQUE ET GEOPHYSIQUE

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COFRAC 1-7426 Sautron, FR
DIN EN ISO 10523 NF X 31-615 (prélèvements purge
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BUREAU VERITAS EXPLOITATION

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COFRAC 1-7368 Courbevoie, FR
NF X43-551 DIN 16961-2 DIN EN 14790 AG2 and IS EN 15259:2007 DIN EN 14181 + 3 more
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BUREAU VERITAS INSPECCIÓN Y TESTING, S.L. (Unipersonal)

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ENAC LE378 Sant Cugat del Vallès, ES
UNE-EN 13284-2 UNE-EN 15259 UNE-EN 16911-2 UNE-EN 13284-1 UNE EN 1911 + 3 more
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Babcock Marine [Rosyth]

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UKAS 0757 Dunfermline, GB
(HSG 248) – 2021 14B based on HSG 248 DIN EN 12021 14A based on HSG 248 (PCM) based on HSG 248 + 2 more
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Balis Micro

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RvA L581 Boven-Leeuwen, NL
AM09 based on BS ISO 21527-1: DIN EN ISO 21528-2 DIN EN ISO 4833-2 BS ISO 15214:1998 0.95) based on BS ISO 21527-2:2008
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Bareiss Prüfgerätebau

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Sound intensity — scanning method (ISO 9 Messgeräte für die Härteskale Shore A* Analoge Anzeige Railway freight wagon brake system requi + 3 more
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Baudynamik Heiland & Mistler

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DAkkS D-PL-20359-01-01 Bochum, DE
DIN 4150-1 * DIN 4150-2 * DIN 4150-3 *
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Baugrund Süd, Gesellschaft für Bohr- und Geotechnik

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DAkkS D-PL-23070-01-01 Bad Wurzach, DE
DIN EN ISO17892-12 DIN 18134 DIN 18122-2 DIN 19698-1
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Bauteilprüfzentrum Scheller

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DAkkS D-PL-11046-01-01 Schweinfurt, DE
ISO 16750-5 DIN EN ISO 2812-1 DIN EN ISO 2812-3 DIN EN 12680-3 DIN EN 60068-2-66 + 3 more
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Bax Engineering

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Bay SensorTec

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Tensile testing of metallic materials (I Beschleunigung sinusförmig Schwingungsaufnehmer 10 m/s + 2 more
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Bayerisches Landesamt für Gesundheit und Lebensmittelsicherheit

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Beck-Messtechnik

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DAkkS D-PL-21251-01-00 Flein, DE
IEC 60068-2-1 IEC 60068-2-2 IEC 60068-2-6 DIN EN IEC 60068-2-11 DIN EN IEC 60068-2-13 + 3 more
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BeckProsper

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UKAS 8974 Kingswinford, GB
ASTM A370-24 ASTM E23-24 ASTM E 384-22 ASTM E8/E8M-24 ISO 6507-1 + 3 more
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Bernhard-Nocht-Institut für Tropenmedizin

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Bertrandt Ingenieurbüro

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DAkkS D-PL-11184-01-00 Köln, DE
DIN EN 60068-2-14 DIN EN 60068-2-30 DIN EN IEC 60068-2-38 DIN EN 60068-2-67 DIN EN 60068-2-78 + 3 more
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Bertrandt Ingenieurbüro

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DAkkS D-PL-18365-01-01 München, DE
DIN EN 60068-2-30 IEC 60068-2-61 DIN EN 60068-2-57 DIN EN 60068-2-80 ISO 16750-3 + 1 more
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Bertrandt Ingenieurbüro

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DAkkS D-PL-23202-01-01 Tappenbeck, DE
DIN 75220 DIN EN ISO 6270-2 DIN 55635 DIN EN IEC 60068-2-11 DIN EN IEC 60068-2-52 + 3 more
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Bertrandt Technologie

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DAkkS D-PL-21326-01-01 Tappenbeck, DE
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Best Srl

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ACCREDIA 01119 Santa Croce sull'Arno, IT
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Big-M Büro für ingenieurgeophysikalische Messungen

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DIN 4150-1 DIN 4150-2 DIN 4150-3
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Bilfinger Engineering & Maintenance

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DAkkS D-K-15017-01-00 Frankfurt, DE
Vickers hardness test (ISO 6507) Temperatur * Temperaturmessgrößen −35 °C Railway braking — urban guided transport Temperatur −40 °C + 3 more
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Bioscientia Institut für Medizinische Diagnostik GmbH Bioscientia MVZ Berlin

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DAkkS D-ML-13452-02-00 Berlin, DE
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Bioscientia Institut für Medizinische Diagnostik GmbH Bioscientia MVZ Freiburg

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DAkkS D-ML-13452-10-00 Freiburg, DE
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Bioscientia Institut für Medizinische Diagnostik GmbH Bioscientia MVZ Ingelheim

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DAkkS D-ML-13452-01-01 Ingelheim, DE
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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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