ISO 7626-2

Experimental Modal Analysis – Single-Point Excitation

ISO 7626-2 describes procedures for experimental modal analysis using single-point, single-axis excitation to characterise the dynamic properties and natural frequencies of structures and machines. This test method captures frequency response functions and mode shapes essential for structural design validation, vibration control, and fault diagnosis. Aerospace, automotive, civil engineering, and machinery manufacturers use modal analysis to refine designs and understand dynamic behaviour under operational loads. Accreditation ensures rigorous application of measurement protocols and data quality standards supporting engineering confidence in structural performance predictions.

What it measures

  • Frequency response functions (FRF) over specified frequency range
  • Natural frequencies (resonances) and modal damping ratios
  • Mode shapes and structural deflection patterns
  • Coherence and measurement quality indicators
  • Dynamic stiffness and impedance characteristics
🇩🇪 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 7626-5 🇬🇧 BS EN ISO 7626-5 🇫🇷 NF EN ISO 7626-5 🇮🇹 UNI EN ISO 7626-5 🇪🇸 UNE EN ISO 7626-5 🇳🇱 NEN EN ISO 7626-5
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NATEC Sensors

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DAkkS D-K-15139-01-01 Garching, DE
Railway brakes — conditions for homologa − Durchfluss von Flüssigkeiten Gleichspannung U (Simulation des Signals generators) + 3 more
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NEMKO

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DAkkS D-PL-22131-01-01 Pfinztal, DE
IEC 61000-4-2: 2008 IEC 61000-4-3: 2006 IEC 61000-4-4: 2012 IEC 61000-4-5: 2005 IEC 61000-4-6: 2013 + 3 more
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NORMEC QS

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RvA I248 Ede, NL
NEN-EN 13361 ISO 13362 NEN-EN 13491 DIN EN 13493 NEN-EN 13492 + 3 more
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NSF Wales Limited

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UKAS 0626 Newport, GB
BS EN ISO 7686:2005 DIN EN 997 DIN EN 13079 DIN ISO 10381-7 DIN EN 14622 + 3 more
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Narda Safety Test Solutions

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DAkkS D-K-17726-01-00 Pfullingen, DE
Elektrische Feldstärke / 2 V/m 2,5 V/m 1 V/m Magnetische Feldstärke / + 3 more
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Nature’s Consultancy

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UKAS 10460 Romford, GB
(HSG 248) – 2021 (PCM) based on HSG 248 DOC/002 based on HSG 248)
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Navobi

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RvA L486 Ermelo, NL
AM09 based on BS ISO 21527-1: 07L.1.11 based on ISO 5984:2002 DIN EN ISO 11290-2 ISO 4833-1 DIN EN ISO 8968-1 + 3 more
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Nemko S.p.A. a socio unico

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ACCREDIA 00036 Biassono, IT
DIN EN 62368-1: 2016 DIN EN 61326-2-6 DIN EN 61010-2-101 EN IEC 62368-1 IEC 61326-2-6 + 3 more
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Nemko S.p.A. a socio unico

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ACCREDIA 01404 Ferrara, IT
DIN EN 50155 DIN EN 55014-1: 2018 IEC 61000-4-16: 2015 DIN EN IEC 60068-2-52 IEC 61326-1: 2012 + 3 more
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Nestlé Qualité Assurance Center

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COFRAC 1-0646 - Cergy Saint-Christophe, FR
DIN EN ISO 7932 DIN EN ISO 6888-1 ISO 15213-1 DIN ISO 16649-2 DIN EN ISO 6888-3 + 3 more
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Nichol & Clarke Environmental Services

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UKAS 32076 Clervaux Terrace, GB
(HSG 264, 2012)
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Nico Manufacturing

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UKAS 9458 Clacton-on-Sea, GB
DIN EN 13115 DIN EN 1026 BS 6375-1:2015 + A1:2016 and the DIN EN 1027 DIN EN 1191 + 3 more
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Niedersächsisches Landesgesundheitsamt

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DAkkS D-PL-17693-02-01 Hannover, DE
DIN EN ISO 15061 (D 34) DIN EN 27888 (C 8) DIN EN 1484 (H 3) ISO 5667-21 DIN 38404-C 10 + 3 more
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NonaChem

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DAkkS D-PL-21392-01-00 Ladenburg, DE
DIN EN ISO 2813 DIN EN ISO 6270-2 ISO 20567-1 DIN EN ISO 1518-1 DIN EN ISO 3248 + 3 more
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Normec DETS

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UKAS 2139 Consett, GB
BS 1377: Part 2: 1990 DIN EN 12457 No DETSC 5012 based on BS EN staining based on HSG 248. (HSG 248) – 2021 + 1 more
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Normec VRO

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RvA I203 Geldermalsen, NL
#EN ISO 5164:14 # EN 116-97 NEN 4400-1 # ISO 13736 #ISO 6618 + 3 more
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Normec Valitech

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DAkkS D-K-18539-01-00 Falkensee, DE
Tensile testing of metallic materials (I positiver Überdruck -0,01 bar Absolutdruck p abs Taupunkttemperatur + 3 more
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Norsonic-Tippkemper

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DAkkS D-K-15132-01-00 Oelde, DE
Akustik Übertragungsmaß von Messmikrofonen Messmikrofonen mit Dämpfung eines + 3 more
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North Star Environmental

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UKAS 7691 Shotton, GB
(HSG 248) – 2021 NSDOC 47 based on HSG 248 staining based on HSG 248. (PCM) based on HSG 248
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Not One Iota

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UKAS 8998 Portadown, GB
(HSG 248) – 2021 SOP-12, based on HSG 248 staining based on HSG 248 (PCM) based on HSG 248
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Nuclear Restoration Services

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UKAS 0573 Thurso, GB
AIR KERMA RATE AMBIENT DOSE HBs-Antigen (Hepatitis B-Surface RESPONSE: PERSONEL DOSE
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O.C. Consulting (UK)

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UKAS 0282 Harlow, GB
(HSG 264, 2012) Appendix 5 of HSG 227 (2004) (HSG 248) – 2021 (PCM) based on HSG 248
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OBERMEYER Infrastruktur GmbH & Co. KG Institut für Immissionsschutz und Technische Akustik

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DAkkS D-PL-21956-01-00 München, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3
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OCA INSPECCIÓN, CONTROL Y PREVENCIÓN, S.A. (Unipersonal) (OCA GLOBAL)

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ENAC LE2316 Pozuelo de Alarcón, ES
UNE-EN 14385 UNE-EN 15259 UNE-EN 13211 BS ISO 9096:2017 UNE 77216 + 3 more
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OHEC (uk)

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UKAS 0394 Prestwich, GB
(HSG 264, 2012) Appendix 5 of HSG 227 (2004))
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Industries

Aerospace and defence engineering Automotive design and validation Civil engineering and bridge design Heavy machinery and equipment development Vibration and noise control consulting

Related Standards

  • ISO 7626-1 Vibration and shock—Experimental determination of mechanical mobility—Part 1: Basic definitions and transducers
  • ISO 7626-5 Vibration and shock—Experimental determination of mechanical mobility—Part 5: Coupling of mechanical mobility measurement instrumentation
  • ISO 6954 Mechanical vibration and shock—Acceleration transducers—Specifications for laboratory standard instruments

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