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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COFRAC 1-1105 Serres-Castet, FR
DIN EN 10002-1 ASTM E8/E 8M ASTM A 370 NF EN ISO 6892-1 (méthodes A1, A2 et DIN EN 2002-001 + 3 more
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COFRAC 1-6990 La Ciotat, FR
DIN EN 13624 DIN EN 13727 DIN EN ISO 11930 DIN EN 17387 DIN EN ISO 22717 + 3 more
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COFRAC 1-1979 Limoges, FR
NF V 04-407 DIN EN ISO 6888-1 NF V04-403 0.95) based on BS ISO 21527-2:2008 DIN EN ISO 6888-2 + 3 more
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CEEE

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COFRAC 1-0621 Casablanca, FR
IEC 60898-1 IEC 60598-2-1 IEC 60400 DIN EN 60598-1 DIN EN 60335-2-29 + 3 more
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COFRAC 1-1847 Lyon 7Eme, FR
DIN EN 10002-1 BS ISO 9227:2022 DIN EN ISO 643 EN ISO 12624 DIN EN 10045-1 + 3 more
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COFRAC 1-0622 Aumale, FR
DIN 19662 DIN EN ISO 11290-1 DIN EN ISO 11290-2 DIN 45673-1 DIN EN ISO 8968-1 + 3 more
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COFRAC 1-2193 Bourg-En-Bresse Cedex 9, FR
DIN EN ISO 17604 NF V08-401 0.95) based on BS ISO 21527-2:2008 DIN EN ISO 6888-2 DIN ISO 16649-2 + 3 more
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LILANO

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COFRAC 1-2080 Saint Lo, FR
DIN EN ISO 4833-1 based on ISO 13366-2:2006 DIN EN ISO 5534 ASTM D 7238 ISO BS EN 3727-1:2002 + 3 more
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COFRAC 1-0606 Trappes Cedex, FR
DIN EN ISO 2505 ISO 18553 AMD 1 DIN EN 12099 ISO 13480 ISO 6964 + 3 more
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COFRAC 1-5638 Nimes, FR
IEC 60068-2-6 DIN EN-60068-2-6
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COFRAC 1-6419 Sainghin-En-Melantois, FR
DIN EN 17126 DIN EN 14562 DIN EN 14348 IEC 60127-5 DIN EN 14563 + 3 more
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LEAV

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COFRAC 1-1064 La Roche-Sur-Yon Cedex 9, FR
DIN ISO 11665-4 DIN 53483-2 DIN EN ISO 7937 NF V08-050 NF V 08-060 + 3 more
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METROPACK

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COFRAC 1-6986 Reims, FR
ISO 11607-1 ASTM F1886 BS EN ISO 11607-1:2020+A11 NF EN 868-5 annexe D ASTM F88 DIN EN 12758 + 3 more
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METROSITE

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COFRAC 1-2365 Chateaubourg, FR
NF EN 60068-3-6 NF EN 60068-3-5 NF EN 60068-3-11 DIN EN IEC 60068-2-38 NF EN 60068-3-7
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COFRAC 1-7500 Nanterre, FR
DIN EN 14511-2 DIN EN 14511-3 DIN EN 14511-4 DIN EN 14825 NF EN 16147
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COFRAC 1-0646 - Cergy Saint-Christophe, FR
DIN EN ISO 7932 DIN EN ISO 6888-1 ISO 15213-1 DIN ISO 16649-2 DIN EN ISO 6888-3 + 3 more
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COFRAC 1-0248 Vandoeuvre-Lès-Nancy, FR
ISO 2591-1 IEC 60512-17-1 DIN EN 15587 DIN EN ISO 16634-2 DIN EN 15948 + 3 more
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COFRAC 1-7303 Champdeniers, FR
ISO 13320 VDE 414-9-11 NF V08-250 ISO 19343 DIN EN ISO 7899-1 + 3 more
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COFRAC 1-6933 Surgères, FR
DIN EN ISO 17604 NF T 90-412 NF V08-401 DIN ISO 16649-2 DIN EN ISO 6888-2 + 3 more
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COFRAC 1-1922 L'Isle D'Espagnac, FR
IEC 60068-2-27 IEC 60068-2-75 ISO 20653 IEC 61000-4-6: 2013 IEC 60529: 1989 + 3 more
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COFRAC 1-0162 Paris, FR
DIN EN ISO 12966-2 DIN EN 12266-2 DIN EN ISO 12966-4 DIN EN 13656 DIN 30660 + 3 more
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COFRAC 1-6464 Saint-Étienne-Du-Rouvray, FR
#ISO 3771 DIN EN ISO 12966-2 DIN EN 15305 DIN EN ISO 12966-4 DIN EN ISO 3961 + 3 more
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COFRAC 1-6465 Cestas, FR
DIN EN 60068-2-64 ISO 2409 DIN EN-60068-2-6
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COFRAC 1-6446 Evry-Courcouronnes, FR
NF X 43-264 NF X 43-014 NF X 43-267 DIN EN ISO 15587-2 NF T90-111 + 3 more
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COFRAC 1-0161 Cergy, FR
DIN EN ISO 21528-1 DIN 53483-2 DIN EN ISO 21528-2 DIN ISO 11665-4 DIN EN ISO 16649-3 + 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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