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
1,817 Accredited labs
19 Countries

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DAkkS D-ML-22817-01-01 Würzburg, DE
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MVZ genetikum

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*) 1 bar; 2 bar Spinobulbäre Muskelatrophie (Typ Kennedy) AZFa-c Azoospermiefaktor + 3 more
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DAkkS D-ML-18244-01-01 Altenburg, DE
Thrombozytenfunktion Thrombozytenfunktionstest Automatisches Blutbild automatische Leukozytendifferenzierung + 3 more
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DAkkS D-K-19647-01-00 Köln, DE
Magnetische Feldstärke Referenzmagnetsystem Magnetische Flussdichte dichtemessgerät Magnetisches Moment + 3 more
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Mahr

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DAkkS D-K-15074-01-01 Göttingen, DE
eingängige zylindrische Einstellringe * 10 mm Railway braking — adhesion under braking Rundheitsabweichung Prüfstifte * 0,14 mm + 3 more
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DAkkS D-PL-11143-01-01 Weimar, DE
DIN EN 62196-1: 2015 DIN EN 196-3 DIN EN 196-6 DIN EN 196-7 DIN EN 196-8 + 3 more
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DAkkS D-K-11143-01-01 Weimar, DE
Kraft (WPM) * Kalibrierung der Prüfkraftmesseinrichtung Machinery vibration — industrial machine 0,01 N + 3 more
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DAkkS D-PL-11267-01-00 Braunschweig, DE
DIN EN 932-1 DIN EN 932-2 DIN EN 933-1 DIN EN 933-2 DIN EN 933-4 + 3 more
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DAkkS D-PL-11220-01-01 Hannover, DE
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DAkkS D-PL-11142-01-01 Dortmund, DE
DIN EN ISO 15630-1 DIN EN ISO 15630-2 DIN EN ISO 15630-3 DIN EN 274-1 VDE 0847-4-2 + 3 more
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DAkkS D-ML-22182-01-00 Leipzig, DE
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DAkkS D-ML-22296-01-01 Augsburg, DE
25-OH-Vitamin D Stimulation mit Antigenen (Aspergillus 1 / 2, Babesia Bartonella henselae, Candida albicans, Chlamydia pneumoniae, Chlamydi + 3 more
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DAkkS D-ML-13168-08-01 Hannover, DE
Thrombozytenaggregationstest IgG Antikörper gegen Kollagen HLA-DR ADP Ristocetin + 3 more
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DAkkS D-ML-13168-03-00 Hannover, DE
Echinococcus-Antikörper Haemophilus influenzae Phänotypisierung Thrombozytäre Antikörper Salmonellen-Typisierung + 3 more
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DAkkS D-ML-13168-09-00 Hannover, DE
ABO-System lsoagglutinine (Serumeigenschaften) Rh-Merkmal D Kell-Merkmal K + 3 more
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DAkkS D-ML-13168-02-00 Hannover, DE
Toxoplasma gondii -Ak Treponema pallidum-AK Herpes-Simplex-Viren, Typen 2, Aciclovir-Resistenz Adenoviren + 3 more
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DAkkS D-ML-22843-01-01 Cottbus, DE
D-Dimer Gerinnungsfaktor XIII Protein S Fibrinmonomere Oligosaccharide + 3 more
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DAkkS D-ML-22843-02-00 Cottbus, DE
Aspergillus-Antikörper Brucella-Antikörper Candida dubliniensis Candida-Antikörper Cryptococcus Antigen + 3 more
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DAkkS D-ML-22289-01-00 Heppenheim (Bergstraße), DE
ALOT AML-ED/MRD BPDCN B-ALL-ED/MRD T-ALL-ED/MRD + 3 more
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DAkkS D-ML-13288-01-00 Bautzen, DE
Basophile Blutbildmessung (Automat) Eosinophile Erythrozyten Basophile Granulozyten + 3 more
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DAkkS D-ML-13288-02-01 Dresden, DE
Basophile Blutbildmessung (Automat) Eosinophile Erythrozyten Basophile Granulozyten + 3 more
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DAkkS D-ML-13291-01-00 Magdeburg, DE
Metanephrin, Normetanephrin VMS, 5-HIES, HVS 10-OH-Carbazepin 3-Methoxytyramin 9-OH-Risperidone + 3 more
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DAkkS D-ML-13414-01-00 Rostock, DE
PFA-Verschlusszeit 3-Methoxytyramin 5-Hydroxyindolessigsäure Adrenalin Dopamin + 3 more
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DAkkS D-ML-20110-01-01 Zwickau, DE
10-Hydroxycarbazepin (Eslicarbazepin) Amiodaron, Desmethylamiodaron CDT Amiodaron, Desethylamiodaron + 3 more
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DAkkS D-ML-13374-01-00 Kaiserslautern, DE
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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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