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
1,591
Accredited labs
17
Countries
Showing 301–325 of 342 labs
TUV SUD Limited
Active
DIN EN 60068-2-64
IEC 60068-2-6
IEC 60068-2-64
IEC 60068-2-59:1990
DIN EN 50155
+ 3 more
Testo Industrial Services
Active
RELATIVE HUMIDITY
HUMIDITY continued
loggers
Gas Pressure Gauge
Saturated salt capsules
+ 2 more
Tetra Tech Consulting
Active
(HSG 248) – 2021
RPSCA1 based on HSG 248
(PCM) based on HSG 248
RPSCA2 based on HSG 248
BS 7592:2008, BS 8554:2015
+ 2 more
(HSG 248) – 2021
03 based on HSG 248)
QOP01 based on HSG 248
(PCM) based on HSG 248
The Testing Lab
Active
DIN EN 933-11
BS EN ISO 17892-1:2014+A1:2022
BS EN ISO 17892-10:2018
BS EN ISO 17892-11:2019
BS EN ISO 17892-2:2014
+ 3 more
Thomas Dudley
Active
BS 1212-2:1990 Clause 4
BS 1212-3:1990 Clause 4
DIN EN 997
Laktoseintoleranz (LCT -14055
BS 1212-4:1991 Clause 4, 13, 14
Total Clean Air
Active
ISO 14644-3
BS EN ISO 14644-2:2015:Part 2
DIN EN 12469
BS EN ISO 14644-1:2015
BS EN ISO 14644-4:2022
+ 3 more
Tru-Cal Metrology
Active
including dial and digital
LENGTH (cont’d)
Plain plug gauges (taper)
ANCILLARY MEASUREMENTS
Plain ring gauges (taper)
+ 3 more
Tyneside Standards
Active
Micrometers
See Notes 3 and 5
See Note 6
Caliper
length bars) – See Note 5
+ 3 more
UK Grid Solutions
Active
DIN EN 60255-22-2
IEC 61000-4-4: 2012
IEC 60255-26
IEC 60255-22-4
IEC 61000-4-5: 2005
+ 3 more
FNED142 BS EN ISO 11816-
FNES67 (P1) based on BS EN ISO
FNES16 (F13) based on ISO 6579-1:2017+A1
FNES16 (F13) based on BS EN
ISO 6579-1
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UL International (UK)
Active
DIN EN 12209
DIN EN 1155
DIN EN 12179
DIN EN 1935
DIN EN 1670
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UL VS
Active
(HSG 264, 2012)
and Appx. 3 of HSG 227 (2004))
guides HSG 264 (2012) and
ACoP L8 and BS 8580-1:2019
UTAC UK
Active
DIN EN 60068-2-64
DIN EN 60068-2-78
IEC 68-2-56:1988
DIN EN IEC 60068-2-5
DIN EN-60068-2-6
+ 2 more
Uniper Technologies
Active
DIN EN 13284-1
BS EN ISO 23210:2009
requirements of BS EN 14181:2014
IEC 60519-11
requirements of BS EN
+ 3 more
University of Salford
Active
DIN EN 12667
ISO 8301
DIN EN 12939
DIN EN 12664
DIN EN ISO 13163
+ 3 more
University of Salford
Active
Pistonphones
Microphones
LS2/WS2 microphones
based:
Reverberation Time
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