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
1,817 Accredited labs
19 Countries

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INSTITUTO TECNOLOGICO DE ARAGON (ITA)

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ENAC LE257 Zaragoza, ES
IEC 61000-4-13: 2002 DIN EN 50121-3-2 IEC 61000-3-2: 2014 DIN EN 60601-1-2 IEC 61000-3-3 + 3 more
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INSTITUTO TECNOLÓGICO DE LA ENERGÍA (ITE)

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ENAC LE554 Paterna, ES
IEC 61000-3-2: 2014 UNE-EN IEC 61000-3-2 UNE-EN 61000-3-2 UNE-EN IEC 61000-6-4 IEC 61000-3-3 + 3 more
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INSTITUTO TECNOLÓGICO DEL EMBALAJE, TRANSPORTE Y LOGÍSTICA, ITENE.

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ENAC LE678 Paterna, ES
UNE-EN ISO 12048 UNE-EN ISO 2234 UNE-EN ISO 2247 UNE 137001 UNE 49706 + 3 more
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INSTITUTO VALENCIANO DE MICROBIOLOGIA

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ENAC LE1286 Bétera, ES
DIN EN 1040 DIN EN 1656 DIN EN 14561 IEC 60127-6 DIN EN 13727 + 3 more
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INSTRUMENTOS WIKA, S.A. (Unipersonal)

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ENAC LC10.039 Sabadell, ES
CEM ME-003 EURAMET cg-17 CEM ME-010 Ground-borne noise and vibration from ra UNE-EN ISO 16911-1 + 3 more
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INTERTEK FRANCE

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COFRAC 1-7401 Heudebouville, FR
DIN EN 12469 NF S 90-351 BS EN ISO 14644-1:2015 ISO 14644-3
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INTERTEK France

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COFRAC 1-1296 Heudebouville, FR
DIN EN ISO 1833-6 DIN EN ISO 1833-2 DIN EN ISO 1833-7 DIN EN ISO 1833-1 DIN EN ISO 1833-20 + 3 more
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IPH Institut "Prüffeld für elektrische Hochleistungstechnik"

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DAkkS D-PL-12107-01-00 Berlin, DE
IEC 62271-1: 2017-07 DIN EN 62271-1 VDE 0671-1 IEC 62271-100: 2021 VDE 0671-100 + 3 more
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ISEGA, Forschungs- und Untersuchungs

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DAkkS D-PL-14160-01-01 Aschaffenburg, DE
DIN EN 1230-1 EN 1230-2 DIN 10955 DIN ISO 8784-1 DIN 54378 + 3 more
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ISFOC, S.A. (Unipersonal)

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ENAC LE2590 Puertollano, ES
UNE-EN 60068-2-78 UNE-EN 60068-2-14 UNE-EN 60068-2-38
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ITA Ingenieurgesellschaft für Technische Akustik mit beschränkter Haftung

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DAkkS D-PL-20393-01-00 Wiesbaden, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3 DIN EN ISO 3741 DIN EN ISO 3743-2 + 3 more
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ITAP - Institut für technische und angewandte Physik

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DAkkS D-PL-18192-01-00 Oldenburg, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3 DIN SPEC 45653 ISO 18406
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ITC - CNR

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ACCREDIA 01854 San Giuliano Milanese, IT
DIN EN 14019 EN ISO 1716 IEC 60512-15-2 BS EN ISO 1716:2002 DIN EN 1026 + 3 more
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ITGA NORMANDIE

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COFRAC 1-6304 Petit Couronne, FR
NF X43-050 (parties utiles de ISO 22262-1 NF X 43-050 NF X 43-269 - Annexe K
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ITS Testing Services (UK)

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UKAS 1516 Leigh, GB
BS EN ISO 1833-1:2020 And the following parts of ISO 1833 ISO 1833-4:2017/EU Reg. method 2ISO 1833 ISO 1833-3: 2019 ISO 1833-6: 2019 + 3 more
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ITS Testing Services (UK) Limited (Aberdeen Laboratory)

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UKAS 0101 Bridge of Don, GB
ASTM D 5443 ASTM D2892 (modified) ASTM D2503 ASTM D4052 (modified) ASTM D2887 (modified) + 3 more
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ITS Testing Services (UK) Limited (Aberdeen)

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UKAS 0123 Aberdeen, GB
DC Resistance DC VOLTAGE Temperatur-Simulation AC CURRENT Base metal thermocouples + 3 more
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ITS Testing Services (UK) Limited (Caleb Brett – Downstream)

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UKAS 0102 Grays, GB
ASTM D3338 ASTM D 2624 ASTM D 5006 ASTM D 2386 ASTM D7153 + 3 more
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ITS Testing Services (UK)

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UKAS 1158 Chester, GB
UK 3725 based on ASTM D2163 and BS EN 15984:2011-07 IP 411, ISO 6251 ASTM D6667 mod ISO 8973 modified + 3 more
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IWS Institut für Werkstoffkunde und Schweißtechnik

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DAkkS D-PL-11283-01-01 Seevetal, DE
ISO 6508-1 Charpy impact test (ISO 148-1) Tensile testing of metallic materials (I BS EN ISO 9015-2 BS EN ISO 9016:2022 + 3 more
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Industrieanlagen- Betriebsgesellschaft mit beschränkter Haftung Betriebsfestigkeitslabor (IBL)

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DAkkS D-PL-12001-02-04 Ottobrunn, DE
DIN EN ISO 6506-1 ASTM E 10 DIN EN ISO 6507-1 ASTM E 384 DIN EN ISO 6508-1 + 3 more
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Industrieanlagen- Betriebsgesellschaft mit beschränkter Haftung Kalibrierlabor

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DAkkS D-K-12001-01-01 Ottobrunn, DE
- Gleichstromwiderstand / Messgeräte Quellen >100 Ω > 10 kΩ + 3 more
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Industrieanlagen- Betriebsgesellschaft mit beschränkter Haftung Prüflabor für Qualifikationstests des Raumfahrt-Testzentrums

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DAkkS D-PL-12001-01-00 Ottobrunn, DE
DIN EN 10228-2 IEC 61000-6-2: 2005 IEC 61000-6-1 IEC 61000-4-2: 2008 IEC 61000-4-3: 2006 + 3 more
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InfraServ GmbH & Co. Wiesbaden KG Abteilung Immissionsschutz

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DAkkS D-PL-19220-01-00 Wiesbaden, DE
DIN EN ISO 9614-3 DIN EN ISO 11200 DIN EN ISO 11202 DIN EN ISO 11203 DIN EN ISO 11205 + 3 more
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Infraserv Höchst Segment Site Services

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DAkkS D-PL-14332-01-01 Frankfurt am Main, DE
DIN 38402-A 11 DIN 38402-A 12 DIN 38402-A 13 DIN ISO 5667-5 (A 14) DIN EN ISO 5667-6 (A 15) + 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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