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
1,591 Accredited labs
17 Countries

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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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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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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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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 1-7202 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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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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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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LBMA

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COFRAC 1-7441 Le Vesinet, FR
NF S92-501 (mars
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BIOXAL

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COFRAC 1-7423 Chalon-Sur-Saรดne, FR
DIN EN 17387 DIN EN 13697
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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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DSSF

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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 1-5697 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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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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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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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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