ISO 7626-2

Experimental Modal Analysis – Single-Point Excitation

ISO 7626-2 describes procedures for experimental modal analysis using single-point, single-axis excitation to characterise the dynamic properties and natural frequencies of structures and machines. This test method captures frequency response functions and mode shapes essential for structural design validation, vibration control, and fault diagnosis. Aerospace, automotive, civil engineering, and machinery manufacturers use modal analysis to refine designs and understand dynamic behaviour under operational loads. Accreditation ensures rigorous application of measurement protocols and data quality standards supporting engineering confidence in structural performance predictions.

What it measures

  • Frequency response functions (FRF) over specified frequency range
  • Natural frequencies (resonances) and modal damping ratios
  • Mode shapes and structural deflection patterns
  • Coherence and measurement quality indicators
  • Dynamic stiffness and impedance characteristics
🇩🇪 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 7626-5 🇬🇧 BS EN ISO 7626-5 🇫🇷 NF EN ISO 7626-5 🇮🇹 UNI EN ISO 7626-5 🇪🇸 UNE EN ISO 7626-5 🇳🇱 NEN EN ISO 7626-5
1,591 Accredited labs
17 Countries

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Element Metech KDK

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DAkkS D-K-15180-01-01 Wiesloch, DE
Elektrische Messgrößen Gleichstrom- und Niederfrequenzmessgröße Railway brake — magnetic track brakes (U − Gleichspannung − Gleichstromstärke + 3 more
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Elettra Srl

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ACCREDIA 00968 Calenzano, IT
DIN EN 60601-2-40 DIN EN 60068-2-30 IEC 61000-6-1 AS/NZS CISPR 22:2006 DIN EN 60335-2-50 + 3 more
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Elster

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DAkkS D-K-19495-01-01 Mainz-Kastel, DE
Durchfluss von Gasen 0,5 m³/h Volumendurchfluss > 4 m³/h Railway overhead lines — pantograph head > 10 m³/h + 3 more
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Emilab Srl con socio unico

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ACCREDIA 00751 Amaro, IT
ETSI EN 301 489-1: V2.2.3 DIN EN IEC 60068-2-11 ISO 21498-2 BS ISO 9227:2022 DIN EN 60695-10-2: 2016 + 3 more
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Endolab Mechanical Engineering

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DAkkS D-PL-18838-02-01 Riedering, DE
DIN EN ISO 14607 DIN EN 13687-2 DIN EN ISO 15912 ASTM E290-22 DIN EN ISO 19023 + 3 more
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Endress+Hauser SE+

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DAkkS D-PL-15172-01-00 Maulburg, DE
IEC 61000-4-2: 2008 IEC 61000-4-3: 2006 IEC 61000-4-4: 2012 IEC 61000-4-5: 2005 IEC 61000-4-6: 2013 + 3 more
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Enquin Environmental

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UKAS 2604 Wentloog, GB
(HSG 248) – 2021 (Section 2) based on HSG 248 (Section 4) based on HSG 248 staining based on HSG 248 (HSG 264, 2012) + 3 more
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Ente Nazionale Risi - Laboratorio di Chimica, Merceologia e Biologia Molecolare

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ACCREDIA 00616 Castello d'Agogna, IT
IEC 60512-17-1 DIN EN 16802 UNI 11676 DIN EN 13805 based on ISO 20483:2013 + 3 more
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Entwicklungs- und Prüflabor Holztechnologie

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DAkkS D-PL-11054-01-00 Dresden, DE
CDC73 (NM_000384: c.1-c.82) ID152 EN ISO 11925-2 DIN EN 350 + 3 more
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Enviraz Surveys

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UKAS 0441 Glasgow, GB
HSG 264 (2012) and Appx. 3 of (HSG 264, 2012) HSG 227 (2004)) Appendix 5 of HSG 227 (2004))
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Envirocare Midlands

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UKAS 1755 Redditch, GB
(HSG 248) – 2021 SOP/11, based on HSG 248 (PCM) based on HSG 248
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Envirochem Analytical Laboratories

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UKAS 1227 Fareham, GB
(HSG 248) – 2021 DIN EN 12457-2 3.02 based on HSG 248 staining based on HSG 248. (PCM) based on HSG 248
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Envirolab

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UKAS 1247 Hattersley, GB
(HSG 248) – 2021 (PCM) based on HSG 248
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Environmental Essentials

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UKAS 2719 Cannel Row, GB
(HSG 248) – 2021 TP003 based on HSG 248 (PCM) based on HSG 248 TP002 based on HSG 248 Appendix 5 of HSG 227 (2004) + 1 more
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Environmental Inspection

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UKAS 27551 Crook, GB
(HSG 264, 2012)
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Environmental Management Solutions

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UKAS 4238 Hereford, GB
Appendix 5 of HSG 227 (2004) (HSG 264, 2012)
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Environmental Services

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UKAS 2099 Exeter, GB
(HSG 248) – 2021 (PCM) based on HSG 248 SP1 based on HSG 248
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Environmental Test Services

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UKAS 1909 Reading, GB
BS 2011:2.1 Ca:1977 IEC 60068-2-2 ETSI EN 300 019 Part 2.1: 2014 ETSI EN 300 019 Part 2.2: 2013 DIN EN 60068-2-30 + 3 more
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Environmental and Site Safety Solutions

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UKAS 9608 Basildon, GB
(HSG 264, 2012) and Appx. 3 of HSG 227 (2004)) Executive guides HSG 264 (2012)
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Environtec

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UKAS 2030 Chelmsford, GB
(HSG 248) – 2021 (PCM) based on HSG 248 staining based on HSG 248
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Envirosafe Testing

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UKAS 28785 Wolverhampton, GB
(HSG 248) – 2021 SOP 3 based on HSG 248 (PCM) based on HSG 248
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Erichsen Gesellschaft mit beschränkter Haftung & Co. Kommanditgesellschaft

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DAkkS D-K-21247-01-01 Hemer, DE
Innen- und Tiefenmaße Konventioneller 0,11 G > 2 G > 5 g + 3 more
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Esenwein

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DAkkS D-K-15168-01-00 Hochdorf, DE
/ Messgeräte > 220 mV Quellen > 0,2 V 120 V 200 V + 3 more
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Essex Asbestos Testing

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UKAS 8007 Corringham, GB
(HSG 248) – 2021 (PCM) based on HSG 248 TP03 based on HSG 248
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Eton Environmental Group

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UKAS 2734 Darlington, GB
(HSG 248) – 2021 TP005, based on HSG 248 (PCM) based on HSG 248
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Industries

Aerospace and defence engineering Automotive design and validation Civil engineering and bridge design Heavy machinery and equipment development Vibration and noise control consulting

Related Standards

  • ISO 7626-1 Vibration and shock—Experimental determination of mechanical mobility—Part 1: Basic definitions and transducers
  • ISO 7626-5 Vibration and shock—Experimental determination of mechanical mobility—Part 5: Coupling of mechanical mobility measurement instrumentation
  • ISO 6954 Mechanical vibration and shock—Acceleration transducers—Specifications for laboratory standard instruments

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