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
1,591 Accredited labs
17 Countries

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LABORATORIO DE METROLOGIA Y CALIBRACIÓN DE PRESIÓN Y TEMPERATURA DE LA UNIVERSIDAD DE VALLADOLID. (TERMOCAL)

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ENAC LC10.063 Valladolid, ES
3,5 kPa  P  70 kPa 70 kPa < P  700 kP 3,5 kPa  P  2,0 MPa 2,0 MPa < P  7,0 3,5 kPa  P  20 kPa 20 kPa < P  70 kPa 100 kPa  P  6,1 MPa 6,1 MPa < P  100 100 kPa  P 70 MPa + 3 more
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LABORATORIO DE METROLOGÍA Y METROTECNIA DE LA E.T.S.I. INDUSTRIALES DE LA U.P.M.

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ENAC LC10.002 Madrid, ES
nach DIN EN ISO 3650:1999 EURAMET CG-6 ISO 5436-1 CEM DI-013 CEM DI-012 + 3 more
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LABORATORIO DE RADIOACTIVIDAD AMBIENTAL DE LA UNIVERSIDAD DE EXTREMADURA (LARUEX)

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ENAC LE1260 Cáceres, ES
UNE-EN ISO 10704 UNE-EN ISO 10703 EPA 903.0 EPA 909.0 ISO 13161 + 3 more
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LABORATORIO OFICIAL DE METROLOXÍA DE GALICIA - LOMG

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ENAC LC10.052 San Cibrao das Viñas, ES
CEM DI-025 CEM DI-018 UNE-EN ISO 21920-3 CEM DI-009 CEM DI-003 + 3 more
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LABORATORIO QUÍMICO MICROBIOLÓGICO

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ENAC LE1340 San Ginés, ES
UNE-EN ISO 7887 UNE-EN ISO 17852 UNE-EN ISO 8467 ISO 7150-1 SM 2510 B + 3 more
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LABORATORIOS EYCO

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ENAC LC10.195 Paterna, ES
ISO 5-3 ISO 2813 UNE-EN ISO 9342-1 UNE-EN ISO 8598-1 ISO 3664 + 3 more
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LABORATORIOS OMEGA

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ENAC LE1116 Fuenlabrada, ES
UNE 10523 UNE 27888 UNE 7027-1 ISO 23695 UNE-EN ISO 9308-1 + 3 more
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LABS & TECHNOLOGICAL SERVICES AGQ

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ENAC LE1322 Burguillos, ES
UNE-EN 7027-1 UNE-EN ISO 10523 SM 2520 B UNE EN 27888 UNE-EN 872 + 3 more
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LABUS Testlab

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DAkkS D-PL-21470-01-00 Karlsruhe, DE
DIN EN IEC 60068-2-11 DIN EN 60068-2-14 DIN EN 60068-2-18 IEC 60068-2-29 DIN EN 60068-2-30 + 3 more
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LABÔNOR - Site de AUMALE

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COFRAC 1-0622 Aumale, FR
DIN 19662 DIN EN ISO 11290-1 DIN EN ISO 11290-2 DIN 45673-1 DIN EN ISO 8968-1 + 3 more
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LADR GmbH MVZ Nord-West

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DAkkS D-ML-13087-01-00 Schüttorf, DE
10-Hydroxycarbazepin (MHD) Amiodaron, Desmethylamiodaron Clozapin, Norclozapin Cyclosporin A Amiodaron, Desethylamiodaron + 3 more
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LADR GmbH MVZ Nord-West Zweigpraxis Leer

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DAkkS D-ML-13087-02-00 Leer, DE
HbA1c Basophile Eosinophile Erythrozyten Hämatokrit + 3 more
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LADR GmbH Medizinisches Versorgungszentrum Baden-Baden

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DAkkS D-ML-17171-01-01 Baden-Baden, DE
HbA1c HCG qualitativ Erythrozyten Granulozyten basophil Granulozyten eosinophil + 3 more
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LADR GmbH Medizinisches Versorgungszentrum Braunschweig

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DAkkS D-ML-20249-01-00 Braunschweig, DE
HbA1c Retikulozyten Leukozyten Kleines Blutbild Großes Blutbild = + 3 more
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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
HbA1c Basophile Granulozyten Eosinophile Granulozyten Erythrozyten Hämatokrit + 3 more
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LADR GmbH Medizinisches Versorgungszentrum Neuruppin

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DAkkS D-ML-13319-02-01 Neuruppin, DE
Liste aller Untersuchungsverfahren Webpräsenz des Medizinischen Laboratoriu HbA1c Basophile Eosinophile + 3 more
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LADR GmbH Medizinisches Versorgungszentrum Nord

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DAkkS D-ML-13132-01-00 Flintbek, DE
HbA1c Retikulozyten Leukozyten Neutrophile Granulozyten Lymphozyten + 3 more
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LADR MVZ Recklinghausen e

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DAkkS D-ML-13194-01-01 Recklinghausen, DE
Blutsenkung Benzol Ethylbenzol Aceton, Isopropanol, Methanol Ethanol + 3 more
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LADR Medizinisches Versorgungszentrum Dres. Bachg, Haselhorst & Kollegen Recklinghausen

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DAkkS D-ML-13194-01-00 Recklinghausen, DE
Blutsenkung Benzol Ethanol Ethylbenzol Aceton, Isopropanol, Methanol + 3 more
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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 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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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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