CEN/TR 17603-32-04:2022

SLOVENSKI STANDARD
01-marec-2022
Vesoljska tehnika - Priročnik o strukturnih materialih - 4. del: Nadzor integritete,
smernice za preverjanje in proizvodnja
Space engineering - Structural materials handbook - Part 4: Integrity control, verification
guidelines and manufacturing
Raumfahrttechnik - Handbuch der Strukturwerkstoffe - Teil 4: Integritätskontrolle,
Verifizierungsrichtlinien und Herstellung
Ingénierie spatiale - Manuel des matériaux structuraux - Partie 4 : Contrôle de l’intégrité,
directives de vérification et fabrication
Ta slovenski standard je istoveten z: CEN/TR 17603-32-04:2022
ICS:
49.140 Vesoljski sistemi in operacije Space systems and
operations
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL REPORT CEN/TR 17603-32-04

RAPPORT TECHNIQUE
TECHNISCHER BERICHT
January 2022
ICS 49.140
English version
Space engineering - Structural materials handbook - Part
4: Integrity control, verification guidelines and
manufacturing
Ingénierie spatiale - Manuel des matériaux structuraux Raumfahrttechnik - Handbuch der Strukturwerkstoffe -
- Partie 4 : Contrôle de l'intégrité, directives de Teil 4: Integritätskontrolle, Verifizierungsrichtlinien
vérification et fabrication und Herstellung

This Technical Report was approved by CEN on 22 November 2021. It has been drawn up by the Technical Committee
CEN/CLC/JTC 5.
CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium,
Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia,
Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

CEN-CENELEC Management Centre:
Rue de la Science 23, B-1040 Brussels
© 2022 CEN/CENELEC All rights of exploitation in any form and by any means Ref. No. CEN/TR 17603-32-04:2022 E
reserved worldwide for CEN national Members and for
CENELEC Members.
Table of contents
European Foreword . 26
Introduction . 27
33 Aspects of damage tolerance . 28
33.1 Introduction . 28
33.1.1 Damage tolerance . 28
33.1.2 Damage events . 28
33.1.3 Damage tolerance criteria . 28
33.2 General guidelines . 29
33.2.1 Fracture control . 29
33.2.2 Durability . 29
33.2.3 Damage . 29
33.2.4 Defects in composites . 29
33.2.5 Impact damage . 32
33.3 Damage tolerance criteria . 33
33.3.1 General . 33
33.3.2 Load paths . 34
33.3.3 Environment . 34
33.3.4 Damage . 34
33.3.5 Residual strength . 35
33.3.6 Safe-life . 35
33.3.7 Fail-safe . 35
33.3.8 Stiffness . 35
33.3.9 Loads . 35
33.3.10 Environmental factors . 35
33.3.11 Inspection . 35
33.3.12 Summary . 36
33.4 Defect standardisation . 36
33.4.1 General . 36
33.4.2 Types of defects . 37
33.5 Effect of macroscopic defects on static load . 39
33.5.1 Composite failure . 39
33.5.2 Use of fracture mechanics . 39
33.5.3 Multi-angle laminates . 39
33.6 Test and analysis . 40
33.6.1 General . 40
33.6.2 Constituent tests . 42
33.6.3 Lamina tests. 43
33.6.4 Laminate tests . 43
33.6.5 Structural element and component tests . 43
33.6.6 Structural sub-component or full-scale tests . 43
33.6.7 Delamination . 43
33.7 Other features of damage-tolerance design . 45
33.7.1 Acoustic fatigue . 45
33.7.2 Proof testing . 45
33.7.3 Metallic parts . 45
33.7.4 Thermal and meteoroid protection system . 45
33.7.5 Impact dynamics – crashworthiness . 45
33.7.6 Flammability, toxicity and off-gassing . 45
33.7.7 Lightning protection . 46
33.8 Improving damage tolerance with higher toughness laminates . 46
33.8.1 General . 46
33.8.2 Material-related aspects . 46
33.8.3 Lay-up aspects . 47
33.9 References . 47
33.9.1 General . 47
33.9.2 ECSS documents . 48
33.9.3 MIL standards . 48
34 Inspection and quality assurance . 49
34.1 Introduction . 49
34.2 Fabrication and quality assurance . 49
34.2.1 Quality assurance . 49
34.3 Inspection, maintenance and repair . 50
34.3.1 Inspection and maintenance . 50
34.3.2 Repairs . 51
34.4 Inspection . 51
34.4.1 Basic considerations . 51
34.5 Definition of inspection procedures . 52
34.5.1 Procedures . 52
34.5.2 Thin composite laminates. 53
34.5.3 Thick composite laminates . 53
34.6 Non-destructive inspection techniques . 54
34.6.1 Introduction . 54
34.6.2 Damage tolerant designs . 54
34.6.3 Advances in NDT . 54
34.6.4 Techniques . 55
34.6.5 Smart technologies for condition monitoring . 56
34.7 Defects and anomalies for detection . 56
34.7.1 General . 56
34.7.2 Emphasis of NDT development . 57
34.8 Overview of NDT techniques . 57
34.8.1 Selection of NDT technique . 57
34.8.2 Detection of defects . 58
34.9 Traditional contact NDT techniques . 64
34.9.1 General . 64
34.9.2 Visual inspection . 64
34.9.3 Dye penetrant . 64
34.9.4 Magnetic particle . 64
34.9.5 Mechanical resonance or impedance . 64
34.10 Ultrasonic techniques . 65
34.10.1 Introduction . 65
34.10.2 Modes of examination . 66
34.10.3 Ultrasonic signal presentation . 66
34.10.4 Data and image processing . 66
34.10.5 Equipment calibration . 67
34.10.6 Large area scanning . 67
34.10.7 Acousto-ultrasonics . 68
34.10.8 Lamb wave (guided wave) . 69
34.10.9 Rayleigh wave techniques . 70
34.10.10 Backscattering techniques . 70
34.10.11 Transducer technology . 71
34.10.12 Air-coupled techniques (non-contact) . 74
34.11 Acoustic emission . 77
34.12 Laser ultrasonics . 78
34.12.1 General . 78
SIST-TP CEN/TR 17603-32-04:202
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