ISO 7626-2

Experimental Modal Analysis โ€“ 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
๐Ÿ‡ฉ๐Ÿ‡ช DIN EN ISO 7626-1 ๐Ÿ‡ฌ๐Ÿ‡ง BS EN ISO 7626-1 ๐Ÿ‡ซ๐Ÿ‡ท NF EN ISO 7626-1 ๐Ÿ‡ฎ๐Ÿ‡น UNI EN ISO 7626-1 ๐Ÿ‡ช๐Ÿ‡ธ UNE EN ISO 7626-1 ๐Ÿ‡ณ๐Ÿ‡ฑ NEN EN ISO 7626-1 ๐Ÿ‡ฉ๐Ÿ‡ช DIN EN ISO 7626-5 ๐Ÿ‡ฌ๐Ÿ‡ง BS EN ISO 7626-5 ๐Ÿ‡ซ๐Ÿ‡ท NF EN ISO 7626-5 ๐Ÿ‡ฎ๐Ÿ‡น UNI EN ISO 7626-5 ๐Ÿ‡ช๐Ÿ‡ธ UNE EN ISO 7626-5 ๐Ÿ‡ณ๐Ÿ‡ฑ NEN EN ISO 7626-5
1,817 Accredited labs
19 Countries

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UKAS 9982 Waterside Court, GB
and Appx. 3 of HSG 227 (2004)) in Appendix 5 of HSG 227 (2004) guides HSG 264 (2012) and (HSG 264, 2012)
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UKAS 2794 Brighton, GB
staining based on HSG 248 (HSG 248) โ€“ 2021 (PCM) based on HSG 248
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UKAS 4052 Wolverhampton, GB
DIN EN 1628 DIN EN 1627 DIN EN 12046-2 DIN EN 1026 and BS EN 1630:2021 + 3 more
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ERC Testing

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UKAS 23361 Leigh, GB
DIN EN 1863-1 BS EN ISO 10077-1:2006 published 2024) for BS EN DIN EN 1863-2 BS EN ISO 10077-2:2017 + 3 more
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UKAS 8175 Ellesmere Port, GB
DIN EN 13012 DIN EN 1755 DIN EN 13617-3 EN 13616:2004 EN 13617-4:2021 + 3 more
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UKAS 2398 Hull, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248
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UKAS 10169 Jordanstown, GB
EN 1364-3 DIN EN 1366-4 EN 1364-4 BS 476-21 BS 476-22 + 3 more
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UKAS 1460 Wigan, GB
DIN EN 60669-1 BS 546:1950, Amds 1 to 8 inclusive SASO GSO IEC 60669-1:2017 BS 6972:1988, Amd 1 BS 4177:1992 + 3 more
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UKAS 4225 Deeside, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248 based on BS EN 12457 DIN EN 1948-4 dbSNP rs1800562, rs1799945, rs1800730, r
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UKAS 0170 Heaton Mersey, GB
(HSG 264, 2012) HSG 227 (2004)) (HSG 248) โ€“ 2021 (PCM) based on HSG 248
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UKAS 0136 Rotherham, GB
ISO 3651-2 ASTM A262 Methods A, C & E ISO 7438 ASTM G28-2022 Method A ASTM G48 Method A + 3 more
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UKAS 31737 Warwick, GB
ETSI EN 300 019-2-1:V2.1.2,V2.3.1 DIN EN 50155 ETSI EN 300 019-2-2:V2.1.2,V2.4.1 ETSI EN 300 019-2-3:V2.2.2- V2.5.1 ETSI EN 300 019-2-1 v2.3.1 2017- + 3 more
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UKAS 0621 Wednesbury, GB
DIN EN 1303 DIN EN 12209 DIN EN 14846 BS 3621:2007+A2:2012 BS 8621:2007+A2:2012 + 3 more
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UKAS 9141 Sutton Fields, GB
DIN EN 12279 DIN EN 12278 -22018G/A, rs182549 DIN EN 303-2 DIN EN 15502-2-1 + 3 more
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UKAS 2604 Wentloog, GB
(HSG 248) โ€“ 2021 (Section 2) based on HSG 248 (Section 4) based on HSG 248 staining based on HSG 248 (HSG 264, 2012) + 3 more
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UKAS 0441 Glasgow, GB
HSG 264 (2012) and Appx. 3 of (HSG 264, 2012) HSG 227 (2004)) Appendix 5 of HSG 227 (2004))
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UKAS 1755 Redditch, GB
(HSG 248) โ€“ 2021 SOP/11, based on HSG 248 (PCM) based on HSG 248
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UKAS 1227 Fareham, GB
(HSG 248) โ€“ 2021 DIN EN 12457-2 3.02 based on HSG 248 staining based on HSG 248. (PCM) based on HSG 248
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Envirolab

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UKAS 1247 Hattersley, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248
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UKAS 2719 Cannel Row, GB
(HSG 248) โ€“ 2021 TP003 based on HSG 248 (PCM) based on HSG 248 TP002 based on HSG 248 Appendix 5 of HSG 227 (2004) + 1 more
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UKAS 27551 Crook, GB
(HSG 264, 2012)
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UKAS 4238 Hereford, GB
Appendix 5 of HSG 227 (2004) (HSG 264, 2012)
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UKAS 2099 Exeter, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248 SP1 based on HSG 248
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UKAS 1909 Reading, GB
BS 2011:2.1 Ca:1977 IEC 60068-2-2 ETSI EN 300 019 Part 2.1: 2014 ETSI EN 300 019 Part 2.2: 2013 DIN EN 60068-2-30 + 3 more
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UKAS 9608 Basildon, GB
(HSG 264, 2012) and Appx. 3 of HSG 227 (2004)) Executive guides HSG 264 (2012)
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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 shockโ€”Experimental determination of mechanical mobilityโ€”Part 1: Basic definitions and transducers
  • ISO 7626-5 Vibration and shockโ€”Experimental determination of mechanical mobilityโ€”Part 5: Coupling of mechanical mobility measurement instrumentation
  • ISO 6954 Mechanical vibration and shockโ€”Acceleration transducersโ€”Specifications for laboratory standard instruments

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