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

Showing 126–148 of 148 labs

ENAC LC10.069 Sant Celoni, ES
0,03 · 10-2 mol/mol  C < 0,3 · 10-2 mol 0,3 · 10-2 mol/mol  C  1,1 · 10-2 mol/ 1,1 · 10-2 mol/mol ≤ C < 26 · 10-2 mol/m 1,1 · 10-2 mol/mol ≤ C < 26 · 10-2 mol/m 9 · 10-6 mol/mol  C < 75 · 10-6 mol/mol + 3 more
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ENAC LC10.221 Terrassa, ES
(15 ± 1) ⋅ 10-6 mol/mol (1000 ± 50) ⋅ 10 (8 ± 0,5) ⋅ 10-2 mol/mol (1,4 ± 0,1) ⋅ 1 (3000 ± 150) ⋅ 10-6 mol/mol (9 ± 1) ⋅ 10 (80 ± 8) ⋅ 10-6 mol/mol (100 ± 8) ⋅ 10-6 mol/mol
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SEQUOPRO

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ENAC LC10.166 Tres Cantos, ES
0,015 l/min ≤ Q ≤ 40 l/min 0,0 · 10-9 mol/mol 20 ⋅ 10-9 mol/mol ≤ C ≤ 500 ⋅ 10-9 mol/m 0,00 · 10-6 mol/mol 0,5 ⋅10-6 mol/mol ≤ C ≤ 10 ⋅10-6 mol/mol + 3 more
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ENAC LC10.216 Palmas de Gran Canaria, ES
1 mg 2 mg 5 mg 10 mg 20 mg 50 mg 100 mg 10 g 20 g 50 g 100 g 200 g 500 g 1 kg 2 .1 mg 2 mg 5 mg 10 mg 20 mg 50 mg 100 mg
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SAICA

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ENAC LC10.191 Puerto de Santa María, ES
CEM DI-021 CEM DI-004 CEM EL-007 CEM DI-003 CEM DI-008 + 3 more
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SIMETRYCAL

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ENAC LC10.192 Sevilla, ES
EURAMET CG-6 CEM DI-021 CEM DI-004 CEM DI-013 CEM DI-012 + 3 more
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ENAC LE011 Madrid, ES
DIN EN 61010-2-010: 2015 DIN EN 60335-2-9 IEC 61000-4-8: 2009 IEC 61010-2-010: 2014 DIN EN 61010-2-101 + 3 more
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ENAC LC10.203 Zaragoza, ES
-95 kPa ≤ P < 0 kPa 0 kPa ≤ P ≤ 1 kPa 1 -95 kPa ≤ P ≤ -5 kPa - 5 kPa < P < -1 kP
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ENAC LC10.210 Cornellà de Llobregat, ES
(5 ± 0,2) · 10-2 mol/mol (1000 ± 50) · 10-6 mol/mol (15 ± 2) · 10-6 mol/mol
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ENAC LE2749 Zaragoza, ES
UNE-EN 12341 0,015 l/min ≤ Q ≤ 50 l/min 20 ⋅ 10-9 mol/mol ≤ C ≤ 500 ⋅ 10-9 mol/m 20 ⋅10-9 mol/mol ≤ C ≤ 100 ⋅ 10-9 mol/mo 100 ⋅ 10-9 mol/mol ≤ C ≤ 1000 ⋅ 10-9 mol + 3 more
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TECYGES

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ENAC LC10.232 Zaragoza, ES
CEM Procedimiento
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ENAC LE2333 Castellgalí, ES
DIN EN 16615 DIN EN 17658 DIN EN 13697 IEC 60127-6 DIN EN 13727 + 3 more
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ENAC LC10.078 Illescas, ES
UNE-EN ISO 868 ASTM D 2240 ISO 48-9 UNE 7050-3 UNE-EN ISO 10360-2 + 3 more
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TESICNOR

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ENAC LE2354 Noáin, ES
UNE-EN 60903 UNE-EN IEC 61243-1 UNE-EN 50508 UNE 204001 UNE-EN 61111 + 2 more
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ENAC LE1121 Tres Cantos, ES
UNE-EN 14181 UNE-EN 13284-2 UNE-EN 15259 UNE-EN 16911-2 UNE-EN 14385 + 3 more
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UNIMETRIK

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ENAC LC10.082 Legutiano, ES
CEM DI-007 CEM DI-021 CEM DI-004 CEM DI-018 CEM DI-002 + 3 more
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ENAC LE178 Madrid, ES
UNE-EN 81-1 UNE-EN 81-2 UNE-EN 81-50 UNE-EN 81-20 UNE-EN 60947-4-1 + 3 more
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ENAC LE2485 Girona, ES
UNE-EN 25663 UNE-EN 872 UNE-EN ISO 6878 UNE EN 27888 UNE-EN ISO 10523 + 3 more
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URIKER

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ENAC LE775 Zamudio, ES
UNE 77061 SM 4500-NO-3 E UNE-EN ISO 7027-1 ISO 15923-1 UNE-EN ISO 7393-2 + 3 more
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ENAC LC10.251 Hospitalet de Llobregat, ES
CEM ME009
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ENAC LC10.179 Pontevedra, ES
5 a 18 mm/s (Valor pico) (frecuencias en 5 a 12 mm/s (RMS) (frecuencias entre 8 H
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VIRLAB

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ENAC LE131 Asteasu, ES
IEC 60068-2-6 UNE-EN 60068-2-6 UNE-EN 60068-2-27 IEC 60068-2-27 UNE-EN 60068-2-57 + 3 more
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ENAC LE1474 San Sebastián de los Reyes, ES
UNE 73109 IEC 60780 (1998) UNE 73109 (2001) ISO 28218 ISO 27048
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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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