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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ISO 17987-6 ISO 17987-7 ISO 16845
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Inotech Meter Calibration Systems

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Taupunkttemperatur Railway braking — urban guided transport Railway vehicle body structural requirem Railway bogies — wheelsets and bogies st Elektrische + 3 more
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UKAS 8401 Drighlington, GB
Appendix 5 of HSG 227 (2004))
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Institut Français Textile Habillement – IFTH – Rhône Alpes

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COFRAC 1-0101 Ecully Cedex, FR
DIN EN ISO 14419 DIN EN ISO 14045 DIN EN ISO 3071 DIN EN ISO 13934-1 NF EN 14325 (2004) – norme annulée + 3 more
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Institut Technique des Gaz et de l'Air - ITGA - Site St Grégoire K

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COFRAC 1-6090 Brest, FR
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COFRAC 1-6585 Sainte Marie, FR
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COFRAC 1-1029 Meyreuil, FR
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COFRAC 1-1761 Saint Etienne, FR
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COFRAC 1-5967 Saint-Gregoire Cedex, FR
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Institut für Galvano- und Oberflächentechnik Solingen GmbH & Co. KG (IGOS)

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ASTM B 117 ASTM B 368 ASTM G 85 DIN 8237 DIN 50014 + 3 more
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Institut für Hygiene und Umwelt

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DIN 38402-A 12 DIN ISO 5667-5 (A 14) DIN EN ISO 5667-6 (A 15) DIN EN ISO 19458 (K 19) DIN 19643-1 + 3 more
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Institut für Klinische Transfusionsmedizin und Immungenetik Ulm gemeinnützige

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DAkkS D-ML-17347-01-00 Ulm, DE
Basophile Granulozyten Eosinophile Granulozyten Erythrozyten Lymphozyten Leukozyten + 3 more
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Institut für Mikrobiologie der Bundeswehr Zentralbereich Diagnostik

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Institut für Solarenergieforschung GmbH ISFH Calibration and Test Center (CalTeC)

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DAkkS D-K-18657-01-01 Emmerthal, DE
Kurzschlussstrom 0,5 mA 0,1 V Füllfaktor Solarzellen* 25 % 0,01 mW THD U 0,1 % + 3 more
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Institut für Umwelt & Energie, Technik & Analytik e.V. (IUTA)

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DAkkS D-PL-19759-01-05 Duisburg, DE
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Institute for International Product Safety

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DAkkS D-PL-19125-01-00 Bonn, DE
DIN EN IEC 60255-1 VDE 0435-300 DIN EN 60255-151 VDE 0435-3151 IEC 60255-151 + 3 more
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Instrument Repairs and Calibration

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UKAS 4688 East Kilbride, GB
DC Resistance AC VOLTAGE (continued) AC POWER AC CURRENT Generation (continued) + 3 more
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Intek

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ACCREDIA 00855 Rezzato, IT
DIN EN 60068-2-30 IEC 62080 IEC 61000-6-1 IEC 61000-6-2: 2005 DIN EN 61010-1 + 3 more
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ACCREDIA 02096 Brunico, IT
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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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