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1. WO2016162818 - METHOD FOR MANUFACTURING STIFFENED PANELS OF COMPOSITE MATERIAL BY MEANS OF CO-CURING

Publication Number WO/2016/162818
Publication Date 13.10.2016
International Application No. PCT/IB2016/051970
International Filing Date 07.04.2016
IPC
B29D 99/00 2010.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
99Subject matter not provided for in other groups of this subclass
B29C 65/02 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
65Joining of preformed parts; Apparatus therefor
02by heating, with or without pressure
B29C 51/10 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
51Shaping by thermoforming, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
10Forming by pressure difference, e.g. vacuum
B29L 31/30 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C59
31Other particular articles
30Vehicles, e.g. ships or aircraft, or body parts thereof
CPC
B29C 51/10
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
51Shaping by thermoforming ; , i.e. shaping sheets or sheet like preforms after heating; , e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
10Forming by pressure difference, e.g. vacuum
B29C 65/02
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
65Joining ; or sealing; of preformed parts ; , e.g. welding of plastics materials; Apparatus therefor
02by heating, with or without pressure
B29C 66/112
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
66General aspects of processes or apparatus for joining preformed parts
01General aspects dealing with the joint area or with the area to be joined
05Particular design of joint configurations
10particular design of the joint cross-sections
11Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
112Single lapped joints
B29C 66/1122
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
66General aspects of processes or apparatus for joining preformed parts
01General aspects dealing with the joint area or with the area to be joined
05Particular design of joint configurations
10particular design of the joint cross-sections
11Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
112Single lapped joints
1122Single lap to lap joints, i.e. overlap joints
B29C 66/131
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
66General aspects of processes or apparatus for joining preformed parts
01General aspects dealing with the joint area or with the area to be joined
05Particular design of joint configurations
10particular design of the joint cross-sections
13Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
131Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
B29C 66/474
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
66General aspects of processes or apparatus for joining preformed parts
40General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
47Joining single elements to sheets, plates or other substantially flat surfaces
474said single elements being substantially non-flat
Applicants
  • LEONARDO S.p.A. [IT]/[IT]
Inventors
  • FRASCA, Michele
  • SABINO, Pasquale
  • CARIFI, Felice
  • IAGULLI, Gianni
  • SURIANO, Carmine
Agents
  • VANZINI, Christian
Priority Data
10201500001142210.04.2015IT
Publication Language English (en)
Filing Language Italian (IT)
Designated States
Title
(EN) METHOD FOR MANUFACTURING STIFFENED PANELS OF COMPOSITE MATERIAL BY MEANS OF CO-CURING
(FR) PROCÉDÉ DE FABRICATION DE PANNEAUX RIGIDES DE MATÉRIAU COMPOSITE PAR CO-DURCISSEMENT
Abstract
(EN) Method for manufacturing stiffened panels (71, 73), comprising the following steps: forming a first and a second wet skin (51, 53), each comprising a plurality of plies of preimpregnated composite material; forming a plurality of pairs of wet stringers (17, 19), comprising a plurality of plies of preimpregnated material, wherein forming each pair of wet stringers comprises: a) forming an assembly (15) having a central web extending between opposite end flanges, and b) cutting the assembly (15) along a median plane (P) so as to form a pair of wet stringers (17, 19), placing the pairs of wet stringers (17, 19) on the first wet skin (51) by means of re¬ movable supporting members (40); turning the second wet skin (53) over and placing it on the pairs of stringers (17, 19), so as to obtain a pair of wet panels (71, 73) arranged above each other; and subjecting the pair of wet panels (71, 73) to a same curing cycle.
(FR) La présente invention concerne la fabrication de panneaux rigides (71, 73), comprenant les étapes suivantes : formation de première et de seconde peaux humides (51, 53), comprenant chacune une pluralité de plis de matériau composite pré-imprégné; formation d'une pluralité de paires de longerons humides (17, 19), comprenant une pluralité de plis de matériau pré-imprégné, la formation de chaque paire de longerons humides comprenant : a) la formation d'un ensemble (15) présentant un voile central s'étendant entre les collerettes d'extrémité opposée, et b) la découpe de l'ensemble (15) le long d'un plan médian (P) afin de former une paire de longerons humides (17, 19), la mise en place des paires de longerons humides (17, 19) sur la première peau humide (51) à l'aide d'éléments de support amovibles (40); le retournement de la seconde peau humide (53) et sa mise en place sur les paires de longerons (17, 19), afin d'obtenir une paire de panneaux humides (71, 73) disposés l'un au-dessus de l'autre; et la soumission de la paire de panneaux humides (71, 73) à un même cycle de durcissement.
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