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 1-0741 Boigneville, FR
IEC 60512-17-1 DIN EN ISO 16634-2 DIN EN ISO 7971-3 NF EN ISO 17715 DIN EN ISO 3093 + 3 more
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COFRAC 1-7441 Le Vesinet, FR
NF S92-501 (mars
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COFRAC 1-2005 Firminy, FR
ASTM E8/E 8M DIN EN 10002-1 DIN EN 10002-5 DIN EN ISO 6892-2 DIN EN ISO 643 + 3 more
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AVEYRON LABO

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COFRAC 1-1706 Rodez, FR
DIN EN ISO 14403-2 NF V 04-407 NF T 90-412 DIN EN ISO 7899-1 DIN EN ISO 10304-1 + 3 more
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AmiaLab

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COFRAC 1-6573 Bagnols Sur Ceze, FR
NF X43-050 (parties utiles de NF X 43-050 NF X 43-269 –
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BIOXAL

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COFRAC 1-7423 Chalon-Sur-Saône, FR
DIN EN 17387 DIN EN 13697
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COFRAC 1-6232 Nantes, FR
NF X 43-269 NF X 43-269 - Annexe K NF X43-050 (parties utiles de NF X 43-050 ISO 16000-7
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COFRAC 1-0973 Sevres, FR
NF X 43-269 NF X 43-050 ISO 22262-1 NF X 43-269 - Annexe K NF X 43-298 + 3 more
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COFRAC 1-7426 Sautron, FR
DIN EN ISO 10523 NF X 31-615 (prélèvements purge
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COFRAC 1-7368 Courbevoie, FR
NF X43-551 DIN 16961-2 DIN EN 14790 AG2 and IS EN 15259:2007 DIN EN 14181 + 3 more
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COFRAC 1-5812 Moulins, FR
DIN ISO 17289 DIN EN ISO 10523 DIN EN 27888 NF X 31-615 (Uniquement
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COFRAC 1-0793 Perpignan, FR
DIN EN ISO 17294-2 DIN EN ISO 14403-2 DIN EN ISO 13395 VDE 414-9-11 DIN EN ISO 10304-1 + 3 more
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COFRAC 1-0736 St Paul Lez Durance Cedex, FR
ASTM E181 – 17 ASTM E 1297
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COFRAC 1-7313 Fretin, FR
NF X 43-269 NF X 43-050 NF X43-050 (2021)* (parties
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COFRAC 1-1695 Cestas, FR
DIN EN 13486 IEC ISO 1496-2 – Conteneurs DIN EN 16440-1
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COFRAC 1-0301 Marne La Vallee Cedex 2, FR
NF P 92-501 NF P92-512 EN 13823 EN ISO 1716 NF P 92-504 + 3 more
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COFRAC 1-0979 Bobigny, FR
NF X 31-615 (Uniquement NF X 43-257 NF X 43-259 DIN EN 27888 DIN EN ISO 10523 + 3 more
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COFRAC 1-1209 Garons, FR
DIN EN 1988-1 DIN EN ISO 17294-2 NF T 90-412 DIN EN ISO 7899-1 DIN EN ISO 10304-1 + 3 more
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COFRAC 1-5710 Saint-Quentin, FR
NF EN 12802 (inventaire ISO 2811-1 NF T 30-012 DIN EN 15182-4 DIN 51436 + 3 more
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COFRAC 1-5697 Aix-En-Provence, FR
DIN EN 12593 DIN EN 1097-4 DIN EN 933-1 DIN EN 12607-1 DIN EN 1427 + 3 more
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COFRAC 1-5706 Toulouse, FR
DIN EN 12390-6 DIN EN 62196-1: 2015 DIN EN 12390-3 NF P 98-532 NF P 98-533 + 3 more
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COFRAC 1-7246 Cherbourg-En-Cotentin, FR
NF EN ISO 6892-1 (méthode DIN EN ISO 9016 DIN EN ISO 5178 ISO 11148-1
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CETEP

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COFRAC 1-2262 Mainvilliers, FR
DIN EN 12469 NF S 90-351 BS EN ISO 14644-1:2015 ISO 14644-3
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CETIM

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COFRAC 1-7263 Senlis, FR
DIN EN ISO 6508-1 DIN EN ISO 3887 DIN EN ISO 643 DIN EN 2003-009 DIN EN ISO 18203 + 3 more
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CETSEO

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COFRAC 1-0907 Marseille, FR
ASTM D 2624 ISO 6247 DIN ISO 6614 DIN ISO 2049 DIN EN ISO 5163 + 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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