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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ENAC LE2488 Motilla del Palancar, ES
ISO 11452-4: 2020 IEC/CISPR 25 ISO 11452-8: 2015 ISO 11452-2: 2019 ISO 10605 + 3 more
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COFRAC 1-1678 Etupes, FR
NF X43-551 ETSI EN 301 489-1 V2.2.3 2019-11 NF X 44-052 DIN EN 13284-1 DIN EN 14385 + 3 more
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MATE SRL

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ACCREDIA 01525 Torrita di Siena, IT
DIN EN 60068-2-67 ISO 4628-3 DIN EN IEC 60068-2-52 DIN EN 60068-2-30 IEC 60068-2-80 + 3 more
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MBS

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DAkkS D-PL-12159-01-00 Krefeld, DE
DIN EN ISO 16484-5 DIN EN ISO 16484-6 IEC 62386-101 IEC 62386-102 IEC 62386-103 + 3 more
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DAkkS D-PL-19548-01-03 Waldkraiburg, DE
DIN EN 13018 DIN EN 50289-1-2 DIN EN 50289-1-3 DIN EN 50289-1-4 DIN EN 50289-1-5 + 3 more
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DAkkS D-ML-13341-01-01 Berlin, DE
17-OH-Carbazepin Amiodaron, Desmethylamiodaron Amitriptylin Clobazam Clomipramin + 3 more
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MECHAUP

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ENAC LE2894 Martos, ES
UNE-EN IEC 60068-2-1 ISO 16750-4 UNE-EN IEC 60068-2-14 UNE-EN IEC 60068-2-2 UNE-EN IEC 60068-2-38 + 3 more
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DAkkS D-K-20515-01-00 Filderstadt, DE
Temperaturmessgrößen auch direktanzeigend 35 °C direktanzeigende > 200 °C auch direktanzeigend Temperaturmessgrößen −35 °C + 3 more
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METROPACK

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COFRAC 1-6986 Reims, FR
ISO 11607-1 ASTM F1886 BS EN ISO 11607-1:2020+A11 NF EN 868-5 annexe D ASTM F88 DIN EN 12758 + 3 more
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METROSITE

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COFRAC 1-2365 Chateaubourg, FR
NF EN 60068-3-6 NF EN 60068-3-5 NF EN 60068-3-11 DIN EN IEC 60068-2-38 NF EN 60068-3-7
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ACCREDIA 00540 Napoli, IT
DIN EN ISO 12945-2 DIN EN ISO 5403-1 DIN EN ISO 2060 DIN EN ISO 13937-1 DIN EN ISO 11642 + 3 more
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COFRAC 1-7500 Nanterre, FR
DIN EN 14511-2 DIN EN 14511-3 DIN EN 14511-4 DIN EN 14825 NF EN 16147
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DAkkS D-K-18366-01-01 Schweinfurt, DE
1350 mm Innen- und Tiefenmaße * > 300 mm Tiefenmessschieber * 0 mm Höhenmessschieber * 0 mm + 3 more
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DAkkS D-PL-13398-01-00 Berlin, DE
DIN ISO 16000-18 DIN 10113-3 ISO 11731 BS EN ISO 14644-1:2015 ISO 14644-3 + 1 more
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MLL MVZ

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DAkkS D-ML-13228-01-00 München, DE
Berliner-Blau-Reaktion Naphthylacetat-Esterase Pappenheim-Färbung Peroxidase-Reaktion Schnellfärbung (Diff-Quick) + 3 more
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DAkkS D-ML-13178-01-01 Mönchengladbach, DE
CRP Cystatin C HbA1c Großes Blutbild Kleines Blutbild + 3 more
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UKAS 0228 Wimborne, GB
Plain plug gauges (parallel) length bars) LENGTH (continued) Micrometers (enzephalomyopathische Form + 3 more
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DAkkS D-PL-11241-01-01 Eberswalde, DE
DIN EN 50178: 1998 DIN EN ISO 2813 DIN EN ISO 4628-4 DIN EN ISO 10456 DIN EN ISO 12572 + 3 more
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DAkkS D-K-17552-01-01 Berlin, DE
Drehmoment * 0,2 N∙m > 10 N∙m bis Kalibriereinrichtungen > 100 N∙m Drehmomentschlüssel, 0,2 N∙m + 3 more
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MR COMP

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DAkkS D-PL-13383-01-00 Gelsenkirchen, DE
IEC 62570 DIN 13273-7
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UKAS 1625 Wellingborough, GB
on BS 4401:Part 3:1970(1986) ISO 936:1998 BS ISO 21528-2:2017 BS ISO 16649-2:2001 ISO 6888-1 + 3 more
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MS Testing

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UKAS 4413 Newton Aycliffe, GB
IEC 60068-2-2 BS EN 60945, section 8.2. ISO 13628-6: 2006 IEC 60068-2-1 DIN EN 60068-2-30 + 3 more
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DAkkS D-K-20595-01-00 Kirchheim unter Teck, DE
Tensile testing of metallic materials (I Vickers hardness test (ISO 6507) Taupunkttemperatur direktanzeigende > 200 °C Widerstandssensor > 300 °C + 3 more
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UKAS 0199 Galdames Place, GB
(HSG 264, 2012) Appendix 5 of HSG 227 (2004) Appendix 3 of HSG 227 (2004) (HSG 248) – 2021 (PCM) based on HSG 248 + 1 more
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DAkkS D-K-21976-01-01 Berlin, DE
Kraft (WPM) Vibration measuring instruments — test m nen nach DIN 51220 Länge (WPM) *) Vibration and shock — experimental modal + 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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