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

Showing 626–650 of 1,817 labs

GRAVICAL

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DAkkS D-K-21136-01-00 Damme, DE
Innen- und Tiefenmaße Konventioneller Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO Radiated emissions (CISPR 32) + 1 more
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GTM Testing and Metrology

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DAkkS D-K-15106-01-02 Bickenbach, DE
Vickers hardness test (ISO 6507) Kraft Kraftaufnehmer und Sound power — survey method (ISO 3746) 0,2 MN + 3 more
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GTÜ Prüfmittelservice

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DAkkS D-K-20936-01-01 Stuttgart, DE
Abgasmessgeräte für motoren Transmissionsfilter Trübungsgrad N Transmission T + 3 more
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Gas- und Wärme-Institut Essen e. V.

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DAkkS D-PL-18598-01-02 Essen, DE
DIN 30655-1 DIN 30655-2 DIN 3590-1 DIN 3590-2 DIN 30652-2 + 3 more
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Gaspack Services

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UKAS 4203 Pontypridd, GB
BS EN ISO 18119:2018+A1:2021 BS EN 14876:2007/Internal proceduresDiss BS EN ISO 10460:2018 ISO 23088:2020
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Gemeinschaftspraxis med. Michael Dumschat med. Ralf Menkhaus med. Stefanie Strunk Ärzte für Frauenheilkunde Partnerschaftsgesellschaft

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DAkkS D-ML-17457-01-00 Minden, DE
Anti-Müller-Hormon Androstendion CA 125 Cortisol DHEA-S + 3 more
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Genetik Berlin-Lichtenberg GmbH ÖBAG Medicover Humangenetik Berlin - Medicover Humangenetik Berlin-Lichtenberg MVZ Nebenbetriebsstätte Labor

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DAkkS D-ML-22602-01-01 Berlin, DE
Azoospermie (AZF-Mikrodeletionen) Fragiles X-Syndrom (FMR1) Chorea Huntington (HTT) Spinocerebelläre Ataxie Typ1 (ATXN1); Typ 2 (ATXN2); Typ 3 + 3 more
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Georg-August Universität Göttingen, Stiftung öffentlichen Rechts Universitätsmedizin Göttingen Zentralabteilung Transfusionsmedizin HLA-Labor

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DAkkS D-ML-13161-04-01 Göttingen, DE
HLA Klasse I Antikörper lymphozytäre Antikörper donorspezifische komplementabhängige
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Gerico Lab Srl

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ACCREDIA 02192 Torino, IT
ETSI EN 319 412 ETSI EN 319 401 ETSI EN 319 411-2 ETSI EN 319 411-1
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Gerinnungszentrum Rhein-Ruhr

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DAkkS D-ML-18276-01-01 Duisburg, DE
Thrombozytenaggregation Epinephrin-Ristocetin) nach Verschlusszeitbestimmung Kollagen / ADP, PFA-Kollagen Epinephrin, PFA-P2Y) + 3 more
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Gesellschaft für Materialforschung und Prüfungsanstalt für das Bauwesen Leipzig mbH - MFPA Leipzig

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DAkkS D-PL-11021-01-01 Leipzig, DE
ISO 1920-4 DIN EN 480-11 DIN EN 12350-1 DIN EN 12350-3 DIN EN 12350-6 + 3 more
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Gesundheitszentrum Brandenburg an der Havel GmbH Institut für Laboratoriumsmedizin

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DAkkS D-ML-14571-01-00 Brandenburg an der Havel, DE
Aktivator ADP / Epinephrin Thrombozytenfunktionstest Basophile Leukozyten, absolut Basophile Leukozyten Eosinophile Leukozyten + 3 more
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Gigahertz Optik

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DAkkS D-K-15047-01-00 Türkenfeld, DE
spektrale Mikrofonempfindlichkeit Photodioden 1 µA/W Bestrahlungsstärke + 3 more
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Glasgow City Council

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UKAS 1278 Glasgow, GB
(HSG 248) – 2021 staining based on HSG 248 F2011 (BS 696:Part 2:1989) F0131 (BS 1741:10-1:1989) using F0008 (BS 696:Part 2:1989) using + 3 more
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Glenair UK

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UKAS 29564 Mansfield, GB
IEC 60068-2-14 IEC 60068-2-30 IEC 60068-2-2 IEC 60068-2-64 IEC 60068-2-1 + 3 more
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Global CS Center of Samsung Electronics Co

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UKAS 4290 Gyeonggi-Do 16677, KR
DIN EN 55011: 2018 AS/NZS CISPR 11:2004 IEC/CISPR 13 DIN EN 55013 AS CISPR 11:2017 + 3 more
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Global Safety & Environmental

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UKAS 7751 Sawbridgeworth, GB
(HSG 264, 2012)
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Gontermann-Peipers

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DAkkS D-PL-17464-01-00 Siegen, DE
DIN EN ISO 16810 DIN EN ISO 16823 DIN EN ISO 16826 DIN EN ISO 16827 DIN EN 12680-1 + 3 more
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Green Shield Environmental

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UKAS 9528 Stevenage, GB
Appendix 5 of HSG 227 (2004) (HSG 264, 2012)
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Greengea Srl

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ACCREDIA 01596 Messina, IT
DIN EN ISO 7730 ISO 5667-5 DIN EN ISO 6888-1 DIN 40633-2 DIN EN ISO 18593 + 3 more
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GuD Geotechnik und Dynamik Consult

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DAkkS D-PL-14562-01-01 Berlin, DE
DIN 38402-A 12 DIN 38402-A 13 DIN 38402-A 15 DIN EN ISO 5667-6 (A 15) DIN 38402-A 30 + 3 more
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Gucci Art Lab - Laboratorio Test di Gucci Logistica SpA

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ACCREDIA 01577 Scandicci, IT
ISO 10195 ISO 17704 BS EN ISO 14362-1 ISO 14184-1 ISO 4045 + 3 more
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Gully Howard Technical

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UKAS 2735 Portsmouth, GB
(HSG 248) – 2021 (PCM) based on HSG 248
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Gully Howard Technical

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UKAS 0363 Portsmouth, GB
HSG 227 (2004)) (HSG 264, 2012) HSG 264 (2012) and Appx. 3 of Appendix 5 of HSG 227 (2004))
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Göttfert Werkstoff - Prüfmaschinen

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DAkkS D-PL-17291-01-00 Buchen Odenwald, DE
ASTM D3835-16 ASTM D6204-19a ASTM D6601-19 ISO 11443 ASTM D1238-13 + 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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