Scope
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
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DIN EN ISO 7626-1
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BS EN ISO 7626-1
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NF EN ISO 7626-1
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UNI EN ISO 7626-1
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UNE EN ISO 7626-1
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NEN EN ISO 7626-1
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DIN EN ISO 7626-2
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BS EN ISO 7626-2
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NF EN ISO 7626-2
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UNI EN ISO 7626-2
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UNE EN ISO 7626-2
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NEN EN ISO 7626-2
1,817
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19
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Showing 1,151–1,175 of 1,817 labs
NATEC Sensors
Active
Railway brakes — conditions for homologa
− Durchfluss von Flüssigkeiten
Gleichspannung U
(Simulation des Signals
generators)
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NEMKO
Active
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
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NORMEC QS
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NEN-EN 13361
ISO 13362
NEN-EN 13491
DIN EN 13493
NEN-EN 13492
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NSF Wales Limited
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BS EN ISO 7686:2005
DIN EN 997
DIN EN 13079
DIN ISO 10381-7
DIN EN 14622
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Narda Safety Test Solutions
Active
Elektrische Feldstärke /
2 V/m
2,5 V/m
1 V/m
Magnetische Feldstärke /
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Nature’s Consultancy
Active
(HSG 248) – 2021
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DOC/002 based on HSG 248)
Navobi
Active
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
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Nemko S.p.A. a socio unico
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DIN EN 62368-1: 2016
DIN EN 61326-2-6
DIN EN 61010-2-101
EN IEC 62368-1
IEC 61326-2-6
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Nemko S.p.A. a socio unico
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DIN EN 50155
DIN EN 55014-1: 2018
IEC 61000-4-16: 2015
DIN EN IEC 60068-2-52
IEC 61326-1: 2012
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DIN EN ISO 7932
DIN EN ISO 6888-1
ISO 15213-1
DIN ISO 16649-2
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Nico Manufacturing
Active
DIN EN 13115
DIN EN 1026
BS 6375-1:2015 + A1:2016 and the
DIN EN 1027
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ISO 5667-21
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DIN EN ISO 1518-1
DIN EN ISO 3248
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Normec DETS
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BS 1377: Part 2: 1990
DIN EN 12457
No DETSC 5012 based on BS EN
staining based on HSG 248.
(HSG 248) – 2021
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Normec VRO
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#EN ISO 5164:14
# EN 116-97
NEN 4400-1
# ISO 13736
#ISO 6618
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Normec Valitech
Active
Tensile testing of metallic materials (I
positiver Überdruck -0,01 bar
Absolutdruck p
abs
Taupunkttemperatur
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Norsonic-Tippkemper
Active
Akustik
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Messmikrofonen
Messmikrofonen mit
Dämpfung eines
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North Star Environmental
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(HSG 248) – 2021
NSDOC 47 based on HSG 248
staining based on HSG 248.
(PCM) based on HSG 248
Not One Iota
Active
(HSG 248) – 2021
SOP-12, based on HSG 248
staining based on HSG 248
(PCM) based on HSG 248
Nuclear Restoration Services
Active
AIR KERMA RATE
AMBIENT DOSE
HBs-Antigen (Hepatitis B-Surface
RESPONSE:
PERSONEL DOSE
O.C. Consulting (UK)
Active
(HSG 264, 2012)
Appendix 5 of HSG 227 (2004)
(HSG 248) – 2021
(PCM) based on HSG 248
DIN 4150-1
DIN 4150-2
DIN 4150-3
UNE-EN 14385
UNE-EN 15259
UNE-EN 13211
BS ISO 9096:2017
UNE 77216
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