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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ACCREDIA 00340 Priolo Gargallo, IT
EPA 3005 DIN EN ISO 6888-1 DIN EN ISO 10304-1 ASTM D5373-21 ISO 4832 + 3 more
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DAkkS D-PL-11061-07-01 Wolfsburg, DE
DIN EN 60068-2 ISO 16750-3 IEC 60512-6-2 IEC 60512-6-3 IEC 60512-6-4 + 3 more
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DAkkS D-PL-11061-02-02 Petersberg, DE
DIN 40633-2 DIN 40633-3 DIN 53482 DIN 72551-100 DIN 72551-6 + 3 more
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DAkkS D-PL-11061-01-03 Böblingen, DE
DIN EN IEC 60068-2-5 DIN EN 60068-2-14 DIN EN 60068-2-30 DIN EN IEC 60068-2-38 DIN EN 60068-2-53 + 3 more
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DAkkS D-PL-11061-06-00 Ingolstadt, DE
DIN EN 60068-2-14 DIN EN 60068-2-30 DIN EN ISO 6270-2 IEC 60512-1-1 IEC 60512-2-1 + 3 more
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UKAS 2546 Coventry, GB
BS EN ISO 16283-1:2014+A1:2017BS EN ISO BS EN ISO 16283-2:2020 BS EN ISO 140-4:1998 ISO 1407 BS EN ISO 9972:2015 + 1 more
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UKAS 9982 Waterside Court, GB
and Appx. 3 of HSG 227 (2004)) in Appendix 5 of HSG 227 (2004) guides HSG 264 (2012) and (HSG 264, 2012)
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DAkkS D-K-20746-01-00 Bockel, DE
Taupunkttemperatur Widerstandssensor –100 °C bis > 140 °C bis > 240 °C bis + 3 more
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EMCCons RASEK

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DAkkS D-PL-12067-01-02 Ebermannstadt, 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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EMCCons RASEK

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DAkkS D-K-12067-01-01 Unterleinleiter, DE
- Gleichspannung > 0,12 V Vorverstärker > 1,2 V > 12 V > 120 V + 3 more
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COFRAC 1-7440 Brognard, FR
DIN EN 60068-2-64 DIN EN-60068-2-27 DIN EN-60068-2-6
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EMASESA

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ENAC LE822 Algaba, ES
SM 2510 UNE-EN ISO 8467 SM 4500 H+ UNE-EN ISO 7027-1 UNE-EN ISO 9963-1 + 3 more
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ENAC LC10.206 Sant Cugat del Vallès, ES
200 kg/h ≤ m ≤ 60000 kg/h 200 l/h ≤ Q ≤ 60000 l/h 200 kg/h ≤ m ≤ 30000 kg/h 200 l/h ≤ Q ≤ 30000 l/h 700 Pa ≤ P ≤ 2 MPa + 3 more
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ENV Surveys

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UKAS 2794 Brighton, GB
staining based on HSG 248 (HSG 248) – 2021 (PCM) based on HSG 248
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DAkkS D-K-21444-01-01 Niederstetten, DE
Railway brake — anti-slide device (UIC 5 Railway brake — magnetic track brakes (U Railway brakes — conditions for homologa Railway brakes — disc brake pads (UIC 54 − Durchfluss von Gasen + 3 more
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EPTA NORD

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ACCREDIA 00253 Conselve, IT
DIN CEN ISO 15216-2 ISO 19250 AOAC 2012.01 2016 DIN EN ISO 15587-1 EPA 300.1 1997 + 3 more
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ENAC LE1224 Zaragoza, ES
ISO 1496-1 ISO 1496-3 ISO 1496-2 ISO 1496-4 ISO 1496-5 + 1 more
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ENAC LE1853 Maliaño, ES
UNE-EN ISO 6892-1 DIN EN 10002-1 ASTM E 8 ASTM E 208 ASTM E208-06 + 3 more
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UKAS 4052 Wolverhampton, GB
DIN EN 1628 DIN EN 1627 DIN EN 12046-2 DIN EN 1026 and BS EN 1630:2021 + 3 more
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ERC Testing

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UKAS 23361 Leigh, GB
DIN EN 1863-1 BS EN ISO 10077-1:2006 published 2024) for BS EN DIN EN 1863-2 BS EN ISO 10077-2:2017 + 3 more
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ETAS

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DAkkS D-K-19158-01-00 Stuttgart, DE
- Gleichspannung Quellen und Messgeräte > 1 mV bis > 10 mV bis > 100 mV bis > 10 V bis + 3 more
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ACCREDIA 01329 Pavia, IT
IEC 60068-2-57 IEC 62271-207 IEC 60068-2-64 IEC 60068-3-3 ISO 13033 + 1 more
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COFRAC 1-1147 Sainte-Croix-En-Plaine, FR
DIN EN ISO 6888-1 0.95) based on BS ISO 21527-2:2008 DIN EN ISO 6888-2 DIN ISO 16649-2 DIN EN ISO 19020 + 3 more
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ENAC LE2182 Coslada, ES
UNE 64106 BS ISO 6731:2010 UNE-EN ISO 712 UNE-EN ISO 5534 ISO 13580 + 3 more
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ACCREDIA 00028 Vimodrone, IT
ISO 6341 ISO 7346-1 ISO 8692 DIN EN 13727 DIN EN 1657 + 3 more
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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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