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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ITC

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ENAC LE004 Castellón de la Plana, ES
UNE-EN ISO 10545-2 UNE-EN ISO 10545-3 ASTM C373 UNE-EN ISO 10545-4 UNE-EN ISO 10545-5 + 3 more
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AIMEN

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ENAC LE158 Porriño, ES
UNE-EN ISO 3452-1 UNE-EN ISO 5817 UNE-EN ISO 23277 UNE-EN ISO 10042 UNE-EN ISO 13919-1 + 3 more
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ENAC LC10.028 Valladolid, ES
0 mV ≤ U < 200 mV 0,2 V ≤ U < 2 V 2 V ≤ 1 mV ≤ U < 220 mV 0,22 V ≤ U < 2,2 V 2,2 0 mV ≤ U ≤ 100 mV 0,1 V < U ≤ 1 V 1 V < 0 μA ≤ I < 200 μA 0,2 mA ≤ I < 2 mA 2 mA 0 μA ≤ I < 220 μA 0,22 mA ≤ I < 2,2 mA 2 + 3 more
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ENAC LE2422 Toledo, ES
UNE-EN 772-11 UNE 136029 DIN 4772:1979 DIN EN 16510-2-4 DIN EN 17539 + 3 more
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ACCREDIA 02321 Roma, IT
IEC 15408-1 IEC 18045 IEC 18367 IEC 20543 IEC 20004
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ENAC LE723 Castellón de la Plana, ES
EPA 26 UNE-EN 15259 UNE-EN 14791 UNE-EN 13284-1 UNE EN 1911 + 3 more
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DAkkS D-PL-22228-01-01 Regensburg, DE
ISO 11451-1 ISO 11451-2: 2015 ISO 11451-4: 2013 ISO 11452-1 ISO 11452-2: 2019 + 3 more
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DAkkS D-PL-22228-06-01 Villingen-Schwenningen, DE
ISO 11452-2: 2019 ISO 11452-4: 2020 ISO 11452-5: 2002 ISO 11452-8: 2015 ISO 10605 + 3 more
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AWE

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UKAS 1854 Reading, GB
(HSG 248) – 2021 LQP007 based on HSG 248 LQP003 based on HSG 248 (PCM) based on HSG 248
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UKAS 0477 Gosport, GB
the guidance of GPG 14 PERSONAL DOSE EQUIVALENT: RESPONSE:
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UKAS 0078 Portchester, GB
DC Resistance CFH-Gen, Macula-Degeneration DC RESISTANCE (continued) DC VOLTAGE DC VOLTAGE (continued) + 3 more
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Accon

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DAkkS D-PL-19965-01-00 Greifenberg, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3
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UKAS 2418 Cleckheaton, GB
(HSG 248) – 2021 (PCM) based on HSG 248 staining based on HSG 248 (HSG 264, 2012) Appendix 5 of HSG 227
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UKAS 0483 Hemel Hempstead, GB
ISO 11654 BS EN ISO 10140-2:2021 ISO 7171 ISO 354 BS EN ISO 10140-3:2021 + 3 more
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UKAS 0653 Milton Keynes, GB
Sound Calibrators Pistonphones based: level Microphones + 2 more
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UKAS 8504 Glasgow, GB
(HSG 264:2012) HSG 227 Appendix 5: By HSG 227 Appendix 3: By
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UKAS 9064 Paignton, GB
DIN EN ISO 11127-6 DIN EN 13727 1) BS EN ISO 11930:2019+ 2) QMIC WI 22, based on BS EN
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DAkkS D-K-19342-01-02 Holzkirchen, DE
Taupunkttemperatur Railway braking — urban guided transport Temperaturtransmitter Widerstandssensor *) –30 °C + 3 more
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Air Surveys

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UKAS 0553 Wandsworth, GB
(HSG 248) – 2021 APP 7 based on HSG 248 (PCM) based on HSG 248 (PCM) based on HSG 248) APP 15 based on HSG 248 + 2 more
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UKAS 7486 Irvinestown, GB
BS EN ISO 16283-1:2014+A1:2017BS EN ISO BS EN ISO 140-4:1998 ISO 1407 ISO 7171 BS EN ISO 9972:2015 + 1 more
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UKAS 0232 Manchester, GB
(HSG 264, 2012)
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UKAS 2054 Manchester, GB
(HSG 248) – 2021 AEC 1 based on HSG 248 (PCM) based on HSG 248 AEC 6 based on HSG 248
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DAkkS D-K-18731-01-01 Manching, DE
- Gleichspannung / Messgeräte 1 µV Quellen > 1 V + 3 more
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UKAS 4376 Alton, GB
(HSG 248) – 2021 (PCM) based on HSG 248
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UKAS 0681 Writtle, GB
(HSG 248) – 2021 (PCM) based on HSG 248 staining based on HSG 248 (HSG 264, 2012) Appendix 5 of HSG 227 (2004))
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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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