FR2584652A3 - Process for manufacturing a tubular element made of composite material and tubular element obtained thereby - Google Patents

Process for manufacturing a tubular element made of composite material and tubular element obtained thereby Download PDF

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Publication number
FR2584652A3
FR2584652A3 FR8511126A FR8511126A FR2584652A3 FR 2584652 A3 FR2584652 A3 FR 2584652A3 FR 8511126 A FR8511126 A FR 8511126A FR 8511126 A FR8511126 A FR 8511126A FR 2584652 A3 FR2584652 A3 FR 2584652A3
Authority
FR
France
Prior art keywords
fibers
tubular element
manufacturing
composite material
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR8511126A
Other languages
French (fr)
Other versions
FR2584652B3 (en
Inventor
Yves Foissac
Daniel Place
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LERC LAB ETUDES RECH CHIM
Original Assignee
LERC LAB ETUDES RECH CHIM
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LERC LAB ETUDES RECH CHIM filed Critical LERC LAB ETUDES RECH CHIM
Priority to FR8511126A priority Critical patent/FR2584652B3/en
Priority to EG42986A priority patent/EG17558A/en
Publication of FR2584652A3 publication Critical patent/FR2584652A3/en
Application granted granted Critical
Publication of FR2584652B3 publication Critical patent/FR2584652B3/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B29C70/56—Tensioning reinforcements before or during shaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B29C53/581—Winding and joining, e.g. winding spirally helically using sheets or strips consisting principally of plastics material
    • B29C53/582—Winding and joining, e.g. winding spirally helically using sheets or strips consisting principally of plastics material comprising reinforcements, e.g. wires, threads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/80—Component parts, details or accessories; Auxiliary operations
    • B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
    • B29C53/8016—Storing, feeding or applying winding materials, e.g. reels, thread guides, tensioners

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

The invention relates to a process for manufacturing a tubular element made of composite material and to the tubular element obtained thereby. It is characterised in that the resin-impregnated fibres 2, 3 are wound under increasing tension. Application to the composite-material industry.

Description

L'invention se rapporte à un procédé de fabrication d'un élément tubulaire en matériau composite et à l'élément tubulaire ainsi obtenu. The invention relates to a method of manufacturing a tubular element of composite material and to the tubular element thus obtained.

Elle s'applique plus particulièrement mais non exclusivement à la réalisation d'un tube ayant une bonne tenue à l'éclatement sous des pressions internes élevées. It applies more particularly but not exclusively to the production of a tube having good burst strength under high internal pressures.

A ce jour, il est connu de réaliser des éléments tubulaires légers à partir de fibres qui ont été imprégnées d'une résine thermodurcissable avant d'être tant enroulées en couches successives sur un mandrin que comprimées radialement et chauffées jusqu'à polymérisation de la résine. To date, it is known to produce light tubular elements from fibers which have been impregnated with a thermosetting resin before being both wound in successive layers on a mandrel that are compressed radially and heated until polymerization of the resin. .

C'est par tout moyen de roulage connu tel une table de roulage à plateaux thermostatés, des machines à rouleaux chauffants fixes ou rotatifs, etc ... que les fibres imprégnées de résine sont enroulées autour de leur mandrin en un certain nombre de couches. It is by any known rolling means such as a rolling table with thermostatically controlled plates, machines with fixed or rotary heating rollers, etc. that the fibers impregnated with resin are wound around their mandrel in a certain number of layers.

En vue de cet enroulement, les fibres peuvent être isolées ou regroupées en bande voire même reliées entre elles par une trame plus ou moins dense. In view of this winding, the fibers can be isolated or grouped in strips or even connected together by a more or less dense weft.

Pendant l'enroulement, les fibres recoivent l'orientation requise pour résister aux contraintes. During winding, the fibers receive the orientation required to resist stresses.

Lors de cette opération, le défilement des fibres est contrôlé par un dispositif leur imprimant une tension constante. During this operation, the running of the fibers is controlled by a device imparting constant tension to them.

A ce jour, pour augmenter la résistance mécanique à l'éclatement d'un tel tube, on serre le tube dans une frette ou on augmente le nombre de couches de fibres orientées perpendiculairement à l'axe du tube. To date, to increase the mechanical resistance to bursting of such a tube, the tube is clamped in a hoop or the number of layers of fibers oriented perpendicular to the axis of the tube is increased.

Dans les deux cas, cela se traduit malheureusement par une augmentation considérable de l'encombrement et du poids. In both cases, this unfortunately results in a considerable increase in size and weight.

Un résultat que l'invention vise à obtenir est un procédé de fabrication d'un élément du type précité qui, tout en étant léger, offre une haute résistance à l'éclatement. One result which the invention aims to obtain is a method of manufacturing an element of the aforementioned type which, while being light, offers high resistance to bursting.

Par exemple, un tel élément de soixante douze millimètres de diamètre intérieur, avec seulement quinze dixième de millimètres d'épaisseur de paroi, pourra aisément supporter une pression interne de deux cent vingt bars. For example, such an element of seventy-two millimeters in internal diameter, with only fifteen tenths of a millimeter of wall thickness, could easily withstand an internal pressure of two hundred and twenty bars.

A cet effet, elle a pour objet un procédé de fabrication du type précité notamment caractérisé en ce qu'au lieu d'enrou ler les fibres sous une tension constante, on enroule les dites fibres sous une tension croissante. To this end, it relates to a manufacturing process of the aforementioned type, in particular characterized in that, instead of winding the fibers under a constant tension, said fibers are wound under increasing tension.

Elle a également -pour objet les éléments obtenus à l'aide de ce procédé. It also relates to the elements obtained using this process.

Elle sera bien comprise à l'aide de la description ci-après faite, à titre d'exemple non limitatif, en regard du dessin ci-annexé qui représente schématiquement l'élément vu en coupe axiale. It will be clearly understood with the aid of the description given below, by way of nonlimiting example, with regard to the attached drawing which schematically represents the element seen in axial section.

En se reportant au dessin, on voit que, pour fabriquer un tube 1 en matériau composite, des fibres 2, 3 imprégnées d'une résine thermo-durcissable sont enroulées sur un mandrin 4 en couches successives jusqu'à atteindre l'épaisseur E requise pour la paroi 5. Referring to the drawing, it can be seen that, in order to manufacture a tube 1 of composite material, fibers 2, 3 impregnated with a thermosetting resin are wound on a mandrel 4 in successive layers until reaching the required thickness E for wall 5.

L'ensemble est ensuite comprimé radialement puis chauffé jusqu'à polymérisation. The assembly is then compressed radially and then heated until polymerization.

Les fibres sont isolées 3 ou regroupées en bande 6 plus ou moins large voire même reliées entre elles par une trame plus ou moins dense (non représentée). The fibers are isolated 3 or grouped together in a more or less wide strip 6 or even connected together by a more or less dense weft (not shown).

Elles sont enroulées selon des parcours (non représentés) au tracé complexe avec une orientation dictée par les contraintes auxquelles le tube sera soumis. They are wound along paths (not shown) with a complex layout with an orientation dictated by the constraints to which the tube will be subjected.

Au lieu d'enrouler les fibres 2, 3 sous une tension constante, conformément à une caractéristique de l'invention, on enroule les dites fibres sous une tension croissante. Instead of winding the fibers 2, 3 under a constant tension, in accordance with a characteristic of the invention, said fibers are wound under an increasing tension.

Pour faciliter la mise sous tension, selon une autre caractéristique de l'invention, on commence par enrouler du ruban 6 de fibres 2 sur une certaine épaisseur E1 et on poursuit par un enroulement de fibres en fils isolés 3 sur le reste E2 de l'épaisseur de la paroi 5. To facilitate tensioning, according to another characteristic of the invention, one begins by winding ribbon 6 of fibers 2 over a certain thickness E1 and then continues by winding fibers into insulated wires 3 over the rest E2 of the wall thickness 5.

On obtient un tube 1 par exemple de diamètre intérieur D de soixante douze millimètres et d'épaisseur E de paroi de quinze dixième de millimètres qui, du fait de la tension croissante des fibres est fortement précontraint et résiste à une pression intérieure de deux cent vingts bars permettant par exemple l'utilisation de ce tube cnn,me lance missile.  A tube 1 is obtained, for example, with an internal diameter D of seventy-two millimeters and a wall thickness E of fifteen tenths of a millimeter which, due to the increasing tension of the fibers, is highly prestressed and withstands an internal pressure of two hundred and twenty bars allowing for example the use of this tube cnn, me missile.

Claims (3)

REVENDICATIONS l. Procédé de fabrication d'un élément tubulaire en matériau composite obtenu à partir de fibres (2, 3) imprégnées de résine thermo-durcissable, puis enroulées sur un mandrin (4) en couches successives jusqu'à obtention de l'épaisseur (E) requise pour la paroi (5), lequel procédé étant CARACTERISE en ce qu'on enroule les dites fibres sous une tension croissante. l. Method for manufacturing a tubular element of composite material obtained from fibers (2, 3) impregnated with thermosetting resin, then wound on a mandrel (4) in successive layers until the thickness (E) is obtained required for the wall (5), which process being CHARACTERIZED in that said fibers are wound under increasing tension. 2. Procédé selon la revendication 1 caractérisé en ce qu'on commence par enrouler du ruban (6) de fibres (2) sur une certaine épaisseur (E1) et on poursuit par un enroulement de fibres en fils isolés (3) sur le reste (E2) de l'épaisseur de la paroi (5). 2. Method according to claim 1 characterized in that one begins by winding ribbon (6) of fibers (2) over a certain thickness (E1) and one continues by a winding of fibers in insulated son (3) on the rest (E2) of the thickness of the wall (5). 3. Eléments tubulaires obtenus à l'aide du procédé selon la revendication l ou 2 caractérisés en ce que leur paroi (5) comprend des fibres (2, 3) qui depuis la face interne jusqu'à la face externe de la paroi (5) ont une tension croissante.  3. Tubular elements obtained using the method according to claim l or 2 characterized in that their wall (5) comprises fibers (2, 3) which from the internal face to the external face of the wall (5 ) have increasing tension.
FR8511126A 1985-07-12 1985-07-12 PROCESS FOR PRODUCING A TUBULAR ELEMENT MADE OF COMPOSITE MATERIAL AND TUBULAR ELEMENT THUS OBTAINED Expired FR2584652B3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR8511126A FR2584652B3 (en) 1985-07-12 1985-07-12 PROCESS FOR PRODUCING A TUBULAR ELEMENT MADE OF COMPOSITE MATERIAL AND TUBULAR ELEMENT THUS OBTAINED
EG42986A EG17558A (en) 1985-07-12 1986-07-13 Procede de fabrication d'un element tubulaire en materiau composite et element tubulaire ainsi obtenu

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8511126A FR2584652B3 (en) 1985-07-12 1985-07-12 PROCESS FOR PRODUCING A TUBULAR ELEMENT MADE OF COMPOSITE MATERIAL AND TUBULAR ELEMENT THUS OBTAINED

Publications (2)

Publication Number Publication Date
FR2584652A3 true FR2584652A3 (en) 1987-01-16
FR2584652B3 FR2584652B3 (en) 1987-08-07

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FR8511126A Expired FR2584652B3 (en) 1985-07-12 1985-07-12 PROCESS FOR PRODUCING A TUBULAR ELEMENT MADE OF COMPOSITE MATERIAL AND TUBULAR ELEMENT THUS OBTAINED

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EG (1) EG17558A (en)
FR (1) FR2584652B3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2684920A1 (en) * 1991-12-03 1993-06-18 Eurocopter Deutschland METHOD AND DEVICE FOR MANUFACTURING A LOOP-LIKE ELEMENT IN FIBER REINFORCED COMPOSITE MATERIAL.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3141052A (en) * 1960-09-19 1964-07-14 Jr Peter Labash Method of forming seamless hollow plastic shapes
FR1372120A (en) * 1962-10-10 1964-09-11 Bushing Company Ltd Improvements to containers and conduits intended to receive fluids under pressure, and to their manufacture
US3276705A (en) * 1964-01-31 1966-10-04 Porter W Erickson Winding machine
DE3237761A1 (en) * 1982-10-12 1984-04-12 Messerschmitt-Bölkow-Blohm GmbH, 8000 München METHOD FOR PRODUCING A PRESSURE CONTAINER IN COMPOSITE DESIGN

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3141052A (en) * 1960-09-19 1964-07-14 Jr Peter Labash Method of forming seamless hollow plastic shapes
FR1372120A (en) * 1962-10-10 1964-09-11 Bushing Company Ltd Improvements to containers and conduits intended to receive fluids under pressure, and to their manufacture
US3276705A (en) * 1964-01-31 1966-10-04 Porter W Erickson Winding machine
DE3237761A1 (en) * 1982-10-12 1984-04-12 Messerschmitt-Bölkow-Blohm GmbH, 8000 München METHOD FOR PRODUCING A PRESSURE CONTAINER IN COMPOSITE DESIGN

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2684920A1 (en) * 1991-12-03 1993-06-18 Eurocopter Deutschland METHOD AND DEVICE FOR MANUFACTURING A LOOP-LIKE ELEMENT IN FIBER REINFORCED COMPOSITE MATERIAL.

Also Published As

Publication number Publication date
EG17558A (en) 1990-03-30
FR2584652B3 (en) 1987-08-07

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