IEC 60068-2-86:2024

Environmental testing - Part 2-86: Tests -Test Fx: Vibration - Multi-exciter and multi-axis method

IEC 60068-2-86:2024 provides a test procedure for use with multi-exciter and multi-axis vibration test systems. The vibration test is intended for general application to components, equipment, and other products, hereinafter referred to as "specimens", subjected to dynamic environments that could arise during an equipment life cycle. Although this document is mainly intended for vibration testing, the procedure is also applied to certain types of shock and transient tests.

Essais d'environnement - Partie 2-86: Essais - Essai Fx: Vibrations - Méthode par excitateurs multiples et axes multiples

L'IEC 60068-2-86:2024 fournit une procédure d'essai à utiliser avec les systèmes d'essai de vibrations à excitateurs multiples/à axes multiples. Ces essais de vibrations sont destinés à une application générale pour les composants, matériels et autres produits, dénommés ci-après "spécimens", soumis à des sollicitations dynamiques susceptibles de se produire au cours de leur cycle de vie. Même si le présent document est essentiellement destiné aux essais de vibrations, la procédure est également appliquée à certains types d'essais de chocs et de conditions transitoires.

General Information

• Status: Published
• Publication Date: 14-Feb-2024
• ICS: 19.040 - Environmental testing
• Technical Committee: TC 104 - Environmental conditions, classification and methods of test
• Drafting Committee: PT 60068-2-86 - TC 104/PT 60068-2-86
• Current Stage: PPUB - Publication issued
• Start Date: 15-Mar-2024
• Completion Date: 15-Feb-2024

Standards Content (Sample)

IEC 60068-2-86 ®
Edition 1.0 2024-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Environmental testing –
Part 2-86: Tests –Test Fx: Vibration – Multi-exciter and multi-axis method

Essais d'environnement –
Partie 2-86: Essais – Essai Fx: Vibrations – Méthode par excitateurs multiples et
axes multiples
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IEC 60068-2-86 ®
Edition 1.0 2024-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Environmental testing –
Part 2-86: Tests –Test Fx: Vibration – Multi-exciter and multi-axis method

Essais d'environnement –
Partie 2-86: Essais – Essai Fx: Vibrations – Méthode par excitateurs multiples et

axes multiples
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 19.040  ISBN 978-2-8322-8242-7

– 2 – IEC 60068-2-86:2024 © IEC 2024
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 7
3 Terms and definitions . 8
4 Background . 9
4.1 General . 9
4.2 Multi-axis and/or multi-exciter testing to achieve an improved distribution of
dynamic responses . 9
4.3 Multi-exciter testing for large equipment. 10
4.4 Multi-axis testing for reliability growth . 10
4.5 Multi-axis testing to reduce test durations . 10
5 Test apparatus and control strategy . 11
6 Test severities and tolerances . 11
6.1 Test severities . 11
6.2 Tolerances . 11
6.3 Excitations outside the specified test frequency range . 11
6.4 Cross-axis motions . 12
7 Mounting of specimen and installation of measurement systems. 12
8 Precursor testing . 13
9 Vibration response investigation . 13
10 Pre-conditioning . 13
11 Initial measurement and functional performance test . 14
12 Low level excitation for equalisation prior to testing . 14
13 Testing . 14
14 Intermediate measurement and functional performance . 14
15 Recovery . 14
16 Final measurement and functional performance and vibration response
investigation . 15
17 Test verification . 15
18 Information to be specified in the relevant specification . 15
19 Information to be given in the test report. 16
Annex A (informative) Guidance on multi-axis and multi-exciter test control systems . 18
A.1 General . 18
A.2 Multi-exciter control strategies . 18
A.3 Determined and over determined control strategies . 19
A.4 Quantifying the inter-relationship between exciters for vibration testing . 20
A.5 Quantifying the inter-relationship between exciters for time history
replication testing. 21
Annex B (informative) Additional testing guidance . 23
B.1 Fixing, monitor, control and reference points . 23
B.2 Control equalisation . 23
B.3 Cross-axis motion, signal distortion and out of test frequency range
responses . 24
B.4 Precursor testing . 25
B.5 Vibration response investigation . 25

B.6 Temperature conditioning and stabilization . 25
B.7 Performance evaluation . 26
B.8 Verification of test procedure . 26
Annex C (informative) Guidance on the application of multi-axis / multi-vibrator tests . 28
C.1 General . 28
C.2 Advice on using multi-exciter systems for the testing of large specimens . 28
C.2.1 General . 28
C.2.2 Data measurements . 28
C.2.3 Multi-exciter test fixture . 28
C.2.4 Test control . 29
C.2.5 Testing . 29
C.3 Advice on using multi-axis systems for multi-degree of freedom testing . 29
C.3.1 General . 29
C.3.2 Data measurements . 30
C.3.3 Multi-exciter test fixture . 30
C.3.4 Test control . 30
C.3.5 Testing . 30
C.4 Advice on using multiple shakers attached directly to the specimen via
flexible couplings . 31
C.4.1 General . 31
C.4.2 Data measurements . 31
C.4.3 Multi-exciter test fixture . 32
C.4.4 Test control . 33
C.4.5 Interrelationship in testing. 34
Annex D (informative) Guidance on the use of measured data for multi-axis/multi-
vibrator tests . 35
D.1 General . 35
D.2 Use of measured data to derive test severities . 35
Annex E (informative) Guidance on the selection of test tolerances .
...