ISO 7626-5

Experimental Modal Analysis Using Impact Excitation

This test method characterises the dynamic properties of structures through experimental modal analysis using impact hammer excitation. The method measures natural frequencies, damping ratios, and mode shapes by striking the structure and recording the resulting vibration response. It is widely used in aerospace, automotive, civil engineering, and mechanical equipment development to validate structural designs and identify potential vibration issues. Accreditation ensures proper instrumentation calibration, correct measurement methodology, and reliable data interpretation for safety-critical applications.

What it measures

  • Natural frequencies (modal frequencies)
  • Damping ratios (modal damping)
  • Mode shapes (displacement patterns)
  • Frequency response functions (FRF)
  • Coherence and data quality metrics
๐Ÿ‡ฉ๐Ÿ‡ช DIN EN ISO 7626-1 ๐Ÿ‡ฌ๐Ÿ‡ง BS EN ISO 7626-1 ๐Ÿ‡ซ๐Ÿ‡ท NF EN ISO 7626-1 ๐Ÿ‡ฎ๐Ÿ‡น UNI EN ISO 7626-1 ๐Ÿ‡ช๐Ÿ‡ธ UNE EN ISO 7626-1 ๐Ÿ‡ณ๐Ÿ‡ฑ NEN EN ISO 7626-1 ๐Ÿ‡ฉ๐Ÿ‡ช DIN EN ISO 7626-2 ๐Ÿ‡ฌ๐Ÿ‡ง BS EN ISO 7626-2 ๐Ÿ‡ซ๐Ÿ‡ท NF EN ISO 7626-2 ๐Ÿ‡ฎ๐Ÿ‡น UNI EN ISO 7626-2 ๐Ÿ‡ช๐Ÿ‡ธ UNE EN ISO 7626-2 ๐Ÿ‡ณ๐Ÿ‡ฑ NEN EN ISO 7626-2
1,817 Accredited labs
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A.U.E.M.

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COFRAC 1-2303 Thiant, FR
ASTM E8/E 8M DIN EN 10002-1 ASTM E 21 DIN EN 10002-5 DIN EN ISO 6892-2 + 3 more
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COFRAC 1-6312 Gardanne, FR
DIN EN 27888 DIN EN ISO 10523 DIN EN ISO 7393-2 NF X 31-615 (Uniquement
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A2M INDUSTRIE

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COFRAC 1-1249 Fraisses, FR
(BS EN ISO 6892-1: 2019) DIN EN 10002-1 ISO 6892-1 -2009 ASTM E8/E 8M ISO 6892-1 -2016 + 3 more
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ABB FRANCE

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COFRAC 1-0054 Chassieu, FR
IEC 60529: 1989 IEC 60068-2-2 IEC 60068-2-30 IEC 60068-2-1 IEC 60068-2-14 + 3 more
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COFRAC 1-6001 Riorges, FR
NF ISO 21438-3 NF X 43-269 NF ISO 21438-1 DIN EN ISO 16017-2 NF X 43-259 + 3 more
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ACEPE

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COFRAC 1-6133 Cherbourg-En-Cotentin, FR
NF X 43-269 NF X 43-269 โ€“ NF X 43-050 NF ISO 22262-1 (parties utiles ISO 16000-7
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ACM PHARMA

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COFRAC 1-7464 Bellegarde, FR
DIN EN 17126 DIN EN 13624 DIN EN 13727 DIN EN ISO 11930 DIN EN 14476 + 3 more
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COFRAC 1-5576 Mamirolle, FR
NF V04-287 DIN EN ISO 19020 DIN 19662 ISO BS EN 3727-1:2002 ISO 8070 + 3 more
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COFRAC 1-5606 Brussieu, FR
NF X 43-269 NF X 43-050 NF X43-269 โ€“ Annexe NF X43-050 (parties utiles de la norme) NF X43-050 (useful parts of the standard + 3 more
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COFRAC 1-0905 Arzacq-Arraziguet, FR
0.95) based on BS ISO 21527-2:2008 DIN EN ISO 6888-2 DIN ISO 16649-2 DIN EN ISO 6888-3 DIN ISO 11665-4 + 3 more
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ADRIA

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COFRAC 1-0144 Quimper Cedex, FR
DIN EN ISO 21528-1 DIN EN ISO 21528-2 0.95) based on BS ISO 21527-2:2008 DIN EN ISO 6888-2 DIN ISO 16649-2 + 3 more
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AEROLAB

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COFRAC 1-1974 Egly, FR
NF EN 12469 Annexe H pour PSM NF X 44-201 (Octobre 1984) pour PSM NF EN 12469 Annexe G NF X 44-201 DIN EN 12469 + 3 more
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COFRAC 1-0196 Aurillac, FR
DIN EN ISO 6888-1 DIN EN ISO 21528-2 DIN ISO 16649-2 DIN EN ISO 6888-2 NF V08-054 + 3 more
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COFRAC 1-6761 Clermont-Ferrand, FR
DIN 19662 DIN EN ISO 19020 DIN EN ISO 5534 NF V04-295 NF V08-059 + 3 more
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COFRAC 1-7447 Venelles, FR
NF X 43-269 ISO NF X 43-257 NF X 43-050 ISO 16000-7
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ALDARIM

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COFRAC 1-6043 Sainte Helene Du Lac, FR
NF X 43-269 NF X 43-050 NF X43-050 (parties utiles de ISO 16000-7
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ALS

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COFRAC 1-5853 Saint-Pierre-De-Chandieu, FR
NF X 43-269 NF X43-050 (parties utiles de ISO 22262-1 NF X 43-257 NF X 43-050 + 1 more
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ALS France

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COFRAC 1-1364 Saint-Quentin-Fallavier, FR
DIN EN 14902 DIN ISO 16000-3 DIN EN ISO 16017-1 DIN EN ISO 16017-2 DIN ISO 16000-4 + 3 more
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COFRAC 1-5578 Villebon-Sur-Yvette, FR
NF T 90-412 0.95) based on BS ISO 21527-2:2008 DIN EN ISO 6888-2 DIN EN ISO 16649-3 DIN EN ISO 6888-3 + 3 more
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COFRAC 1-5603 Petite-Foret, FR
DIN EN ISO 11546-1 prEN 16185-2 EN 15595 (hors essais au
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AN DIAG

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COFRAC 1-7298 Saint Etienne Du Rouvray, FR
NF X 43-269 NF X 43-269 - Annexe K NF X43-050 (parties utiles de ISO 22262-1 NF X 43-050 + 1 more
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COFRAC 1-7202 Courbevoie, FR
DIN EN 14385 ETSI EN 301 489-1 V2.2.3 2019-11 NF X43-551 IS EN 1948-1:2006 2006 DIN EN 14789 + 3 more
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AQUABIO

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COFRAC 1-7428 Saint Germain Du Puch, FR
DIN ISO 17289 NF T 90-395 NF T 90-354 NF T 90-393 NF T 90-328 + 3 more
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COFRAC 1-2194 Plancy L'Abbaye, FR
NF T 90-412 DIN EN ISO 7899-1 DIN EN ISO 10304-1 DIN EN 12880 ISO 5815-1 + 3 more
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ARENIUS

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COFRAC 1-2044 Chateaubourg, FR
DIN EN IEC 60068-2-11 DIN EN 60068-2-14 DIN EN-60068-2-1 DIN EN-60068-2-2
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Industries

Aerospace and aviation Automotive and rail vehicles Civil engineering and structures Mechanical equipment manufacturing Wind energy systems

Related Standards

  • ISO 7626-1 Vibration and shock โ€” experimental modal analysis โ€” Part 1: fundamentals and overview
  • ISO 7626-2 Vibration and shock โ€” experimental modal analysis โ€” Part 2: instrumentation for impact excitation
  • ISO 9614-1 Acoustics โ€” determination of sound power levels of noise sources using sound intensity โ€” Part 1: measurement at discrete points

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