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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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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Robert Koch-Institut

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DAkkS D-ML-13113-01-01 Berlin, DE
Salmonellen Salmonella enterica, Shigellen, Yersinie Shigellen Salmonella sv. Paratyphi Neisseria meningitidis, Listeria + 3 more
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Rolf Langenscheid GmbH Waagensystemtechnik

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DAkkS D-K-21801-01-00 Lüdenscheid, DE
Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO elektronische Waagen 1) In den CMC sind die erweiterten Messu
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RoodMicrotec GmbH Abt. QTAL Qualification & Reliability

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DAkkS D-PL-12120-01-01 Nördlingen, DE
IEC 60068-2-14 IEC 60068-2-20
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Roto Frank Fenster- und Türtechnologie GmbH Internationales Technologie Center

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DAkkS D-PL-21397-01-01 Leinfelden-Echterdingen, DE
DIN EN 1026 DIN EN 1027 DIN EN 1191 DIN EN 12211 DIN EN 13126-8 + 3 more
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Ruhr Lab

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DAkkS D-PL-21007-01-00 Gelsenkirchen, DE
ISO 13909-2 ISO 13909-3 ISO 13909-5 ISO 13909-7 ISO 13909-8 + 3 more
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Ruhr Oel GmbH BP Gelsenkirchen

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DAkkS D-PL-19612-01-00 Gelsenkirchen, DE
DIN EN ISO 12185 DIN EN ISO 3405 DIN EN 13016-1 DIN EN ISO 20884 DIN EN ISO 20846 + 3 more
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Ruhr-Universität Bochum Humangenetik RUB

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DAkkS D-ML-13425-01-00 Bochum, DE
Spinocerebelläre Ataxien Bindegewebserkrankungen: ACTA2, COL1A1, HD; Chorea Huntington (Huntingtin-Gen) Dentatorubrale-Pallidoluysiane + 3 more
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Rwanda Standards Board

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RvA L638 Kicukiro District, Kigali City, RW
ISO 6222 AM09 based on BS ISO 21527-1: ISO 6579-1 ISO 4832 ISO 2171 + 3 more
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Régie Autonome des Transports Parisiens

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COFRAC 1-1523 Boissy-Saint-Leger, FR
DIN EN ISO 6507-1 DIN EN ISO 6508-1 NF X70-100-1 DIN EN 45545-2 NF X70-100-2 + 3 more
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S&P di Antonio Schettino e C. S.n.c.

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ACCREDIA 00531 Nocera Superiore, IT
ISO 15705 BS EN ISO 17294-2 BS EN 15662 DIN EN ISO 15587-2 ISO 21527-1 + 3 more
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S.D.S.

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COFRAC 1-5058 Pierre Percee, FR
DIN EN 27888 NF X 31-615 (Uniquement DIN EN ISO 10523
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S.K.I. Schlegel & Kremer Industrieautomation GmbH Kalibrierlabor

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DAkkS D-K-21982-01-00 Mönchengladbach, DE
Durchfluss von 2 m3/h bis 800 rn3/h − Durchfluss von Flüssigkeiten Volumendurchfluss dV/dt von strörnenden + 3 more
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S2 Partnership

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UKAS 27441 Elsworth, GB
(HSG 264, 2012)
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SARIA

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UKAS 2648 Doncaster, GB
AM-01 based on BS 4401:Part 1: AM-32 based on BS 4401:Part 4: AM-03 based on BS ISO 937:2023 AM-04 based on BS ISO AM-31 based on BS EN ISO + 3 more
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SAS LABCO

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COFRAC 1-6933 Surgères, FR
DIN EN ISO 17604 NF T 90-412 NF V08-401 DIN ISO 16649-2 DIN EN ISO 6888-2 + 3 more
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SATRA Technology Centre

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UKAS 0248 Kettering, GB
ISO 4931:1986 (withdrawn) ISO 3759:1984 (withdrawn) DIN EN 13759 DIN EN 12150-1 DIN EN ISO 15797 + 3 more
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SAVOIE ANALYSES

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COFRAC 1-0618 Le Bourget Du Lac Cedex, FR
NF X 31 615 (purge DIN ISO 17289 ISO 5815-1 EN 13087-2 DIN EN ISO 7027-2 + 3 more
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SBKS

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DAkkS D-PL-11303-01-01 St. Wendel, DE
DIN 53394-2 DIN 53176 DIN EN ISO 1172 ASTM D 5576 IEC 60512-11-4 + 3 more
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SCHNEIDER ELECTRIC INDUSTRIES

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COFRAC 1-1922 L'Isle D'Espagnac, FR
IEC 60068-2-27 IEC 60068-2-75 ISO 20653 IEC 61000-4-6: 2013 IEC 60529: 1989 + 3 more
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SCHÜCO International KG Technology Center

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DAkkS D-PL-11030-01-01 Bielefeld, DE
DIN EN ISO 717-1 DIN EN ISO 10052 DIN EN ISO 10140-1 DIN EN ISO 10140-2 DIN EN ISO 10140-4 + 3 more
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SCUS

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DAkkS D-PL-11195-01-00 Dresden, DE
DIN EN ISO 12048 DIN 55440-1 ASTM D642 ASTM D4169 DIN EN ISO 2234 + 3 more
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SERVICE COMMUN DES LABORATOIRES (SCL)

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COFRAC 1-0162 Paris, FR
DIN EN ISO 12966-2 DIN EN 12266-2 DIN EN ISO 12966-4 DIN EN 13656 DIN 30660 + 3 more
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SERVICIOS AVANZADOS DE INGENIERÍA PARA LA CERTIFICACIÓN Y ACREDITACIÓN, S.L. (SAICA)

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ENAC LC10.191 Puerto de Santa María, ES
CEM DI-021 CEM DI-004 CEM EL-007 CEM DI-003 CEM DI-008 + 3 more
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SERVICIOS INTEGRALES DE METROLOGÍA Y CALIBRACIÓN, S.L. (SIMETRYCAL)

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ENAC LC10.192 Sevilla, ES
EURAMET CG-6 CEM DI-021 CEM DI-004 CEM DI-013 CEM DI-012 + 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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