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
🇩🇪 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 7626-2 🇬🇧 BS EN ISO 7626-2 🇫🇷 NF EN ISO 7626-2 🇮🇹 UNI EN ISO 7626-2 🇪🇸 UNE EN ISO 7626-2 🇳🇱 NEN EN ISO 7626-2
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Laboratoire de Microbiologie RD&E

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COFRAC 1-6419 Sainghin-En-Melantois, FR
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COFRAC 1-1064 La Roche-Sur-Yon Cedex 9, FR
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ACCREDIA 01129 Sesto San Giovanni, IT
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Laborgemeinschaft Berlin - Labor 28

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Laborgemeinschaft Köln

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Laborgemeinschaft Odenwald

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DAkkS D-ML-18493-01-00 Darmstadt, DE
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Laborärzte Sindelfingen

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DAkkS D-ML-13247-01-01 Sindelfingen, DE
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Lambda Calibration

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UKAS 0495 Chorley, GB
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Lambeth Scientific Services

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UKAS 0937 Chessington, GB
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Lancashire County Scientific Services

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UKAS 0625 Preston Riversway Docklands, GB
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Landesanstalt für Umwelt Baden-Württemberg

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Leadec BV &

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DAkkS D-K-21171-01-01 Chemnitz, DE
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Leftfield Environmental

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UKAS 6998 Port Talbot, GB
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Leftfield Environmental

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UKAS 4707 Port Talbot, GB
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Lehren- und Meßgerätewerk Schmalkalden GmbH LMW-Kalibrierservice

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

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