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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Pennington Choices

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UKAS 0179 Bromley, GB
(HSG 264, 2012) and Appx. 3 of HSG 227 (2004)) Executive guides HSG 264 (2012)
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Perry Analytical

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UKAS 0598 Fareham, GB
(HSG 248) – 2021 (PCM) based on HSG 248 Manual based on HSG 248
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Perschmann Calibration

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DAkkS D-K-15089-01-01 Braunschweig, DE
Parallelendmaße * 0,5 mm DIN EN ISO 3650:1999 > 100 mm Sonderquerschnitt (rund Parallelendmaße * > 100 mm + 3 more
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Peutz Consult

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DAkkS D-PL-20140-01-00 Düsseldorf, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3
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PfB GmbH & Co. Prüfzentrum für Bauelemente

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DAkkS D-PL-17012-01-00 Stephanskirchen, DE
DIN EN 1932 DIN EN 12179 DIN EN 12211 DIN EN 12444 ASTM E547-00 + 3 more
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Pharmaserv GmbH Kalibrierlabor

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DAkkS D-K-18321-01-00 Marburg, DE
Temperaturmessgrößen Widerstandsnormal thermometer (IPRT) Zeiss Industrielle Temperaturmessgrößen −35 °C + 3 more
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Phoenix Contact GmbH & Co. KG Laboratory Device Connectors

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DAkkS D-PL-12161-01-00 Blomberg, DE
IEC 61984 IEC 60998-1 IEC 60998-2-1 IEC 60998-2-2 IEC 60998-2-3 + 3 more
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Pilz GmbH & Co. KG Prüflabor

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DAkkS D-PL-12033-01-01 Ostfildern, DE
IEC 61000-4-11: 2004 IEC 61000-4-29: 2000 IEC 61000-6-2: 2005 IEC 61000-6-4: 2006 IEC 61496-1: 2012 + 3 more
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Polytest Ingenieure

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DAkkS D-PL-21123-01-02 Fürth, DE
DIN EN ISO 9934-1 DIN ISO 815-1 DIN ISO 815-2 DIN ISO 4593 DIN EN 50178: 1998 + 3 more
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Poulten Selfe and Lee

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UKAS 0247 Burnham-on-Crouch, GB
TEMPERATURE Viscosity constant ‘C’ Reference viscometers: ASTM D4052 (Digital density
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Power Diagnostix Systems

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DAkkS D-K-15068-01-00 Aachen, DE
Impulsladung Anstiegszeit Impulsdauer Wechselspannung 1 V > 1,1 kV + 3 more
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Powys County Council

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UKAS 1509 Llandrindod Wells, GB
(HSG 248) – 2021 (PCM) based on HSG 248
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Praxis für Labormedizin, med. Thomas Müller

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DAkkS D-ML-13079-01-00 Aschaffenburg, DE
Differentialblutbild Erythrozyten Hämatokrit Leukozyten Retikulozyten + 3 more
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Precision Technologies International

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UKAS 0325 Tamworth, GB
External (Tip) Diameter Helix (lead) total deviation (F GEARS SPUR/HELICAL EXTERNAL (cont’d) As for Involute Spline Gauges
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Preh

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DAkkS D-PL-18171-01-01 Bad Neustadt a.d. Saale, DE
DIN EN 55025: 2018 IEC 61000-4-4: 2012 VDE 0847-4-4 IEC 61000-4-5: 2005 VDE 0847-4-5 + 3 more
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Privatärztliche Gemeinschaft für Diagnostik Köln-Bonn

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DAkkS D-ML-19686-01-00 Köln, DE
HbA1c Automatisches Blutbild Leukozyten Normoblasten Retikulozyten + 3 more
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Privatärztliche Laborgemeinschaft Köln

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DAkkS D-ML-22827-01-01 Köln, DE
Calcium Bilirubin gesamt Creatinkinase-Muscle-Brain TPZ nach Quick Immunglobulin A + 3 more
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Prodrive Technologies Innovation Services

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RvA L597 Eindhoven, NL
IEC 61000-4-5: 2005 ISO 7637-3: 2016 IEC 61000-4-3: 2006 IEC 61000-4-6: 2013 IEC 60068-2-2 + 3 more
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Product Assessment & Reliability Centre

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UKAS 2379 Bideford, GB
IEC 68-2-2:1974 MIL-STD-810H Method 501.7 MIL-STD 810G:2008 Method 501.5 MIL-STD-810G, Method 501.5 MIL-STD-810F, Method 501.4 + 3 more
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ProfEC Ventus

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DAkkS D-PL-19142-01-00 Oldenburg, DE
IEC 61400-12 Ed.1 * IEC 61400-12-1 Ed.3 * IEC 61400-12-3 Ed.1 * IEC 61400-12-4 Ed.1 * IEC 61400-12-5 Ed.1 * + 3 more
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Public Health Wales – North Wales Microbiology Service F, W & E

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UKAS 1817 Bangor, GB
ISO 6579-1 ISO 15213-2 ISO 11290-1 ISO 7932 F100 based on BS EN ISO + 3 more
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Pulenergy Metrovis srl

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ACCREDIA 01237 Cammarata, IT
UNI 10772
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Pullman Instruments (UK)

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UKAS 0683 Harrogate, GB
DC CURRENT Measurement DC VOLTAGE AC Current Generation DC RESISTANCE (cont’d) + 3 more
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QS-Grimm

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DAkkS D-K-15159-01-01 Gutach Schwarzwaldbahn, DE
Parallelendmaße * 0,5 mm DIN EN ISO 3650:1999 Zylindrische Normale 1 mm Innenzylinder * > 100 mm + 3 more
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QUALILAB

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ACCREDIA 00888 Capriano del Colle, IT
EN 12966: 2014 Section 4.5.4 DIN EN 55025: 2018 DIN EN 60068-2-30 (CISPR 25:2002) Section 6 ISO 11452-4: 2020 + 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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