ДСТУ EN 4866:2022 Аерокосмічна серія. Визначення недоліків та дефектів композиційних матеріалів з органічною матрицею (EN 4866:2021, IDT)

ДСТУ EN 4866:2022
(EN 4866:2021, IDT)

Аерокосмічна серія. Визначення недоліків та дефектів
 композиційних матеріалів з органічною матрицею

 
   
 
 
     
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

Contents

European foreword

1 Scope

2 Normative references

3 Terms and definitions

3.1 General

3.2 Bonding imperfections

3.3 Presence of foreign substance

3.4 Surface imperfections

3.5 Cavities

3.6 Fibres arrangement imperfection

3.7 Imperfection specific to sandwiches

3.8 Stitching imperfections

3.9 Damage

3.10 Other

Annex A (informative) List of definitions and figures

Annex B (informative) Pictures of bonding imperfections

B.1 Absence of adhesive

B.2 Absence of contact

B.3 Adhesive joint colour heterogeneity

B.4 Adhesive rupture

B.5 Debonding

B.6 Excessive adhesive bead

B.7 Insufficient adhesion

B.8 Junction imperfection

B.9 Lack of adhesive

Annex C (informative) Pictures of presence of foreign substances

C.1 Foreign object

C.2 Inclusion

C.3 Pollution

Annex D (informative) Pictures of surface imperfections

D.1 Fern

D.2 Flaking

D.3 Wrinkle

D.4 Imprint

D.5 Indentation (dent/punching)

D.6 Line flash

D.7 Marbling

D.8 Nick

D.9 Pill

D.10 Projection

D.11 Resin flash

D.12 Scratch

D.13 Surface porosities

Annex E (informative) Pictures of cavities

E.1 Insufficient impregnation/dry area

E.2 Porosities

E.3 Voids

Annex F (informative) Pictures of fibres arrangement imperfections

F.1 Bird eyes

F.2 Gap/overlap

F.3 Off-centring

F.4 Ply misorientation

F.5 Resin accumulation

F.6 Undulation

Annex G (informative) Pictures of imperfections specific to sandwiches

G.1 Accidental filling of honeycomb cells

G.2 Core crushing (honeycomb or foam)

G.3 Cut honeycomb

G.4 Deformed honeycomb cells

G.5 Edge filling imperfections

G.6 Insufficient meniscus on honeycomb

G.7 Lack of densification

G.8 Separation of the honeycomb nodal joints

G.9 Slope deformation (chamfer)

G.10 Telegraphing

Annex H (informative) Pictures of stitching imperfections

H.1 Incorrect stitching depth

H.2 Loop

H.3 Missing stitching

H.4 Non-conforming spacing

H.5 Non-conforming angle

Annex I (informative) Pictures of damages

I.1 Burn

I.2 Crack

I.3 Cut ply

I.4 Decohesion

I.5 Delamination

I.6 Microcrack

I.7 Perforation

I.8 Tearing-off of the material

I.9 Whitening of the resin

Annex J (informative) Pictures of other imperfections

J.1 Excessive resin flow

J.2 Feather duster

J.3 Geometry imperfection

J.4 Non-conforming number of plies

J.5 Non-conforming stacking sequence

J.6 Non-conforming thickness

J.7 Pinching

Bibliography