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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COFRAC 1-2263 Arnage, FR
NF X 43-269 NF X 43-269 - Annexe K NF X 43-298 NF X 43-259 ISO 22262-1 + 3 more
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COFRAC 1-0064 Saint-Marcel, FR
DIN EN 1254-2 DIN EN 1254-3 DIN EN 1254-5 DIN EN 12101-10 BS EN 50291-1:2018 + 3 more
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COFRAC 1-0097 Charleville-Mezieres, FR
DIN EN ISO 6508-1 ASTM E8/E 8M DIN EN ISO 643 EN ISO 12624 ISO 4967 + 3 more
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CSTB - BV

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COFRAC 1-0300 Marne La Vallee Cedex 2, FR
DIN EN 947 DIN CEN TS 15119-2 NF P 20-501 DIN EN 1026 BS EN 14351-1:2006+A2:2016 + 3 more
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COFRAC 1-1542 Saint Martin D'Heres, FR
DIN EN 1279-2 DIN EN 1279-5 DIN EN 12094-10 EN 1279-6 – Méthode de référence DIN EN 14449 + 3 more
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COFRAC 1-1970 Chateauneuf Sur Isere, FR
DIN EN 12207 DIN EN 12208 DIN EN 1026 DIN EN 12210 BS EN 14351-1:2006+A2:2016 + 3 more
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COFRAC 1-6191 Grande Synthe, FR
NF EN ISO 6892-1 (méthode DIN EN 10164 ASTM E 8 ASTM A 370 DIN EN ISO 6508-1 + 3 more
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COFRAC 1-7430 Marchaux-Chaudefontaine, FR
DIN EN 60068-2-64 DIN EN-60068-2-1 DIN EN 60068-2-78 DIN EN-60068-2-2 DIN EN 60068-2-14 + 3 more
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COFRAC 1-10039 Marseille, FR
NF X 43-050 NF X43-050 (parties ISO 22262-2 NF ISO 22262-1 et/ou ISO 22262-1
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COFRAC 1-10029 Colomiers, FR
NF X 43-050 NF X43-050 (parties
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COFRAC 1-10041 Villebon-Sur-Yvette, FR
NF X 46-032 NF X 43-050 NF X43-050 (parties
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COFRAC 1-6388 Saint-Martin D'Heres, FR
DIN EN 12469 NF S 90-351 BS EN ISO 14644-1:2015 ISO 14644-3
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COFRAC 1-6491 Bruz, FR
NF X 43-269 - Annexe K NF X 43-050 (parties utiles NF X 46-032 NF X 43-269 – Annexe K NF X 43-050 + 1 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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EOLIA

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COFRAC 1-2416 La Ciotat, FR
DIN EN 12469 NF S 90-351 NF X 44-201 (Octobre 1984) pour PSM BS EN ISO 14644-1:2015 ISO 14644-3
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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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COFRAC 1-1592 Bagneux, FR
NF X 43-269 NF X 43-050 NF X43-050 (parties utiles de la NF X 46-032 NF X46-031
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COFRAC 1-1593 Henin-Beaumont, FR
NF X 43-269 – Annexe K NF X 43-050 NF X43-050 (parties utiles de la
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COFRAC 1-5597 Nantes Cedex 03, FR
NF X43-050 (parties utiles de NF X 43-050 NF X 43-269 - Annexe K NF EN 14346 – NF X43-050 (parties utiles de la
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COFRAC 1-5922 Vergeze, FR
NF X 43-269 – Annexe K NF X 43-050 NF X 43-269 - Annexe K NF X43-050 (parties utiles de la
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COFRAC 1-1591 Saint Etienne, FR
NF X 43-269 - Annexe K NF X 43-269 – Annexe K NF X 43-050 NF X43-050 (parties utiles de la NF X43-050 (parties + 1 more
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COFRAC 1-5840 Gradignan, FR
NF X 43-269 - Annexe K NF X 43-269 – Annexe K NF X 43-050 NF X43-050 (parties utiles de la NF ISO 21363
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COFRAC 1-6694 Petit-Couronne, FR
ISO 659 ISO 8262-1:2005 DIN EN ISO 658 NF V03-040 NF V 04-348 + 3 more
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COFRAC 1-2202 Douai, FR
NF T90-111 DIN EN ISO 14403-2 NF T 90-412 DIN EN ISO 7899-1 NF-T 90-029 + 3 more
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COFRAC 1-2243 Vennecy, FR
DIN EN ISO 21528-2 DIN EN ISO 6888-1 0.95) based on BS ISO 21527-2:2008 DIN EN ISO 6888-2 DIN ISO 16649-2 + 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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