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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LADR GmbH Medizinisches Versorgungszentrum Braunschweig

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DAkkS D-ML-20249-01-00 Braunschweig, DE
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LADR GmbH Medizinisches Versorgungszentrum Bremen

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DAkkS D-ML-13183-01-00 Bremen, DE
HbA1c Zellzahl Blutbild groß Blutbild klein Retikulozyten + 3 more
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LADR GmbH Medizinisches Versorgungszentrum Kramer und Kollegen

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DAkkS D-ML-13107-01-00 Geesthacht, DE
Thrombozytenfunktionstest 2-Desoxypipradol (2-DPMP) 2-oxo-3-hydroxy-LSD 3.4-DMMC 3-Fluormethcathinon + 3 more
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LADR GmbH Medizinisches Versorgungszentrum Hannover

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DAkkS D-ML-13109-01-01 Hannover, DE
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LADR GmbH Medizinisches Versorgungszentrum Neuruppin

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DAkkS D-ML-13319-02-01 Neuruppin, DE
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LADR GmbH Medizinisches Versorgungszentrum Nord

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DAkkS D-ML-13132-01-00 Flintbek, DE
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LADR MVZ Recklinghausen e

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DAkkS D-ML-13194-01-01 Recklinghausen, DE
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LADR Medizinisches Versorgungszentrum Dres. Bachg, Haselhorst & Kollegen Recklinghausen

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LAYAKK SEGURIDAD INFORMÁTICA

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ENAC LE2494 Paterna, ES
ISO/IEC 18045 ISO/IEC 15408 UNE 320001
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LDA 13

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COFRAC 1-1290 Marseille Cedex 13, FR
NF V08-106 DIN EN ISO 17294-2 NF T 90-412 NF U47-105 DIN EN ISO 7899-1 + 3 more
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LDA DE L'AIN - Site Agro-Alimentaire

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COFRAC 1-2193 Bourg-En-Bresse Cedex 9, FR
DIN EN ISO 17604 NF V08-401 0.95) based on BS ISO 21527-2:2008 DIN EN ISO 6888-2 DIN ISO 16649-2 + 3 more
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LDH Kalibrierservice

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DAkkS D-K-18673-01-01 Dresden, DE
Gleichspannung 1 mV bis 10 mV Messgeräte > 10 mV bis 100 mV > 100 mV bis 220 mV > 220 mV bis 2,2 V > 2,2 V bis 11 V + 3 more
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LEAR CORPORATION ENGINEERING SPAIN, S.L. (Unipersonal)

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ENAC LE2133 Valls, ES
ISO 11452-4: 2020 IEC 60068-2-14 ISO 7637-3: 2016 IEC/CISPR 25 ISO 10605 + 3 more
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LEGNOLEGNO S.C.

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ACCREDIA 01379 Correggio, IT
DIN EN ISO 10140-2 DIN EN ISO 10077-1 DIN EN ISO 10077-2 DIN EN ISO 717-1 DIN EN 12208 + 3 more
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LEPBI - Laboratoire d'Expertise des Polluants du Bâtiment et de l'Industrie

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COFRAC 1-2350 Villepinte, FR
NF X 43-269 DIN 51750-3 NF X 46-032 NF EN 15934 – NF X 43-269 – Annexe K + 3 more
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LGA Bautechnik GmbH Bautechnisches Prüflabor

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DAkkS D-PL-11117-01-00 Nürnberg, DE
DIN EN 62196-1: 2015 DIN EN 196-3 DIN EN 413-2 DIN EN 1308 DIN EN 300 132-3: 2005 + 3 more
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LGA Immissions- und Arbeitsschutz

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DAkkS D-PL-17126-01-00 Nürnberg, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3 DIN 45645-2 DIN ISO 12884 + 3 more
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LGAI TECHNOLOGICAL CENTER, S.A. (APPLUS+)

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ENAC LE894 Bellaterra, ES
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LGC

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UKAS 0423 Guildford, GB
CHEMICAL ASTM D4052 (Digital density
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LHEM

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COFRAC 1-0053 Gonfreville L'Orcher, FR
NF EN ISO 6892-1 Méthode B DIN EN ISO 6508-1 ISO 4969 DIN EN 10002-1 DIN EN ISO 643 + 3 more
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LIDAL

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COFRAC 1-0600 Annecy, FR
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LIFEANALYTICS

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ACCREDIA 00113 Oderzo, IT
ISO 15705 DIN EN ISO 10705-2 ISO 15923-1 DIN EN ISO 10304-1 DIN EN ISO 9377-2 + 3 more
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LILANO

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COFRAC 1-2080 Saint Lo, FR
DIN EN ISO 4833-1 based on ISO 13366-2:2006 DIN EN ISO 5534 ASTM D 7238 ISO BS EN 3727-1:2002 + 3 more
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LNE - Laboratoires de Trappes

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COFRAC 1-0606 Trappes Cedex, FR
DIN EN ISO 2505 ISO 18553 AMD 1 DIN EN 12099 ISO 13480 ISO 6964 + 3 more
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LNE - Site de Nîmes

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COFRAC 1-5638 Nimes, FR
IEC 60068-2-6 DIN EN-60068-2-6
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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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