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
19 Countries

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COFRAC 1-6881 Les Milles, FR
DIN ISO 11665-4 DIN EN ISO 7932 DIN 53483-2 DIN EN ISO 15213-2 NF V08-050 + 3 more
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COFRAC 1-2241 Douai Cedex, FR
DIN EN ISO 6888-1 DIN EN ISO 21528-2 DIN EN ISO 6888-2 DIN ISO 16649-2 NF V08-054 + 3 more
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COFRAC 1-1830 Nantes, FR
DIN EN ISO 21528-1 NF V08-401 DIN ISO 16649-1 DIN EN ISO 6888-1 DIN EN ISO 21528-2 + 3 more
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COFRAC 1-5943 Nantes, FR
NF X 43-269 NF X 43-050 ISO ISO 16000-7
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COFRAC 1-7268 Seichamps, FR
DIN ISO 17289 NF T 90-260 NF X 31-615 (Uniquement DIN EN ISO 10523 DIN EN 27888
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COFRAC 1-0201 Bordeaux, FR
DIN EN 947 ISO 24339 DIN CEN TS 15119-2 DIN EN ISO 3741 NF P 20-501 + 3 more
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COFRAC 1-6839 Champs-Sur-Marne, FR
NF EN 716-1/-2 NF EN 12221-1/-2 NF EN 14988-1/-2 DIN 51130 DIN EN 12227 + 3 more
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COFRAC 1-6017 Marseille, FR
DIN 51750-3 NF X 43-269 โ€“ NF X 43-050 NF X43-050 (parties utiles de la DIN EN 15002
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COFRAC 1-1185 Capelle-La-Grande, FR
NF T90-111 DIN EN ISO 17294-2 DIN EN ISO 14403-2 NF EN ISO 19340 DIN EN ISO 10304-1 + 3 more
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COFRAC 1-5765 Illkirch-Graffenstaden, FR
NF X 43-269 NF X 43-050 NF X43-050 (parties utiles de
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COFRAC 1-5952 Longjumeau, FR
DIN EN 13001-1 NF X 43-269 NF X43-050 (parties utiles de NF X 43-275 NF X 43-257 + 3 more
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FLASHLAB NORD

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COFRAC 1-6979 Lezennes, FR
NF X 43-050 NF X 43-050 (parties utiles NF X 43-269 - Annexe
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COFRAC 1-1428 Charleville-Mezieres, FR
DIN EN ISO 6508-1 ISO 18203 DIN EN ISO 6506-1 NF EN ISO 6892-1 (Mรฉthodes A DIN EN ISO 1463 + 3 more
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COFRAC 1-6523 Jeumont, FR
DIN EN ISO 6508-1 DIN EN ISO 3651-2 DIN EN ISO 4136 ISO 4969 DIN EN 10002-1 + 3 more
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COFRAC 1-6514 Saint-Marcel, FR
DIN EN ISO 6507-1 DIN EN ISO 643 NF EN ISO 6520-1 DIN EN ISO 17639 NF EN ISO 6520-2 + 3 more
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GINGER CEBTP

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COFRAC 1-0002 Elancourt, FR
DIN EN 1097-1 DIN EN ISO 10140-2 DIN EN 933-3 DIN EN 1097-2 DIN EN ISO 10140-4 + 3 more
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GINGER LECES

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COFRAC 1-7433 Saint-Julien-Les-Metz, 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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COFRAC 1-6977 Wintzenheim, FR
NF X 43-269 โ€“ Annexe K NF X 43-050 NF X43-050 (parties utiles de la
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COFRAC 1-1183 Gennevilliers Cedex, FR
IEC 60512-17-1 DIN EN ISO 16634-2 DIN EN ISO 27971 DIN EN ISO 3093 ISO 712-1
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HOP'LAB

Active
COFRAC 1-6221 Strasbourg, FR
NF X43-050 (parties utiles de NF X 43-050 NF X43-050 (parties utiles de la
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IANESCO

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COFRAC 1-6209 Poitiers, FR
DIN EN ISO 17294-2 ISO 7086-2:2000 DIN EN ISO 14403-2 DIN EN ISO 13395 NF T 90-412 + 3 more
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IFTS

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COFRAC 1-0847 Foulayronnes, FR
NF X 45-301 NF X 45-302 NF X 45-303 ASTM F795-88 NF P 90-319 de 02/2011 + 3 more
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COFRAC 1-6747 Atton, FR
NF EN 12469 Annexe G NF S 90-351 NF EN 12469 Annexe D NF X 15-206 DIN EN 14175-4 + 3 more
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COFRAC 1-6558 Bron, FR
NF EN 12469 Annexe G NF EN 12469 Annexe H NF EN 12469 Annexe D DIN EN 14175-4 NF S 90-351 + 3 more
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COFRAC 1-6559 Aix-En-Provence, FR
NF EN 12469 Annexe G NF S 90-351 NF EN 12469 Annexe D NF X 15-206 DIN EN 14175-4 + 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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