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WO2014121413A1 - Système de renfort structural bilatéral périphérique pour planches de surf, dans l'axe neutre sectionnel - Google Patents

Système de renfort structural bilatéral périphérique pour planches de surf, dans l'axe neutre sectionnel Download PDF

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Publication number
WO2014121413A1
WO2014121413A1 PCT/CL2013/000102 CL2013000102W WO2014121413A1 WO 2014121413 A1 WO2014121413 A1 WO 2014121413A1 CL 2013000102 W CL2013000102 W CL 2013000102W WO 2014121413 A1 WO2014121413 A1 WO 2014121413A1
Authority
WO
WIPO (PCT)
Prior art keywords
reinforcement
structural
structural reinforcement
reinforcement according
section
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.)
Ceased
Application number
PCT/CL2013/000102
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English (en)
Spanish (es)
Inventor
Marcelo BOFARULL CIAPPA
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2014121413A1 publication Critical patent/WO2014121413A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/57—Boards characterised by the material, e.g. laminated materials

Definitions

  • the present invention patent refers to a new structural reinforcement system that improves the performance of surfboards.
  • Another innovation corresponds to the use of sandwich laminates, that is to say on a low density polystyrene foam, a sandwich of low thickness and high density pvc foam is laminated, or alternatively, a wood laminate, which increases the mechanical and mechanical properties of durability of the boards, but that has the disadvantage that the boards finally lose the desired flexibility.
  • This technology corresponds to a laminated on polystyrene foam with angled weave fabrics, typically +45 9 / -45s
  • This technology corresponds to a biaxial fabric laminate on a polystyrene foam. It has the edges or edges covered with a carbon fiber cloth or tape with a low thickness laminate. It has the advantage that carbon increases torsion resistance, but it has the disadvantage that a large percentage of the carbon that is placed on the edges stiffens the flexion of the board, specifically the material far from the neutral fiber of the sections, which it contributes to the increase of the moment of inertia of the section and makes the table more rigid to the flexion in the transverse axis.
  • FIG. 1A shows the top view of a surfboard, with a cut of the surface where the structural reinforcement is shown, indicated with 1.
  • the longitudinal axis 2 is also indicated, and 3 transversal axis.
  • FIG. IB shows the side view of a typical surfboard, where the reinforcement is indicated, indicated with 1, and the vertical axis 4.
  • FIG. 1C shows a section of the table (section A-A) with the location of the reinforcement on the neutral axis of the section (3), the vertical axis of the section (4) is also shown.
  • FIG. D shows the detail of the reinforcement (1) at the edge of the table section.
  • FIG. 2A a top view of the table is shown, the tip area without the reinforcement 5, and the tail area without the reinforcement 6 is shown.
  • FIG. 2B a top view of the table is shown, with full reinforcement throughout the perimeter, in this case the filament is rolled and is continuous throughout the perimeter.
  • FIG. 3A a typical section of a structural beam type "I" is shown, where 4 is the vertical axis, 3 is the transverse axis, or neutral fiber, that is the fiber that is not subject to compression or tension when the beam is deformed with loads in the vertical direction (loads in the direction of axis 4), 7 is the upper wing, 8 is the lower wing and 9 is the soul of the beam.
  • 4 is the vertical axis
  • 3 is the transverse axis, or neutral fiber, that is the fiber that is not subject to compression or tension when the beam is deformed with loads in the vertical direction (loads in the direction of axis 4)
  • 7 is the upper wing
  • 8 is the lower wing
  • 9 is the soul of the beam.
  • FIG. 3B shows a diagram of the section of a typical surfboard, where 4 is the vertical axis, and 3 is the transverse axis (neutral fiber), 9 is the internal low density foam, which is attached and supports the structural layer upper 7, and also supports the lower structural layer 8.
  • the section on the right behaves the same mechanically as the structural beam on the right.
  • the low density foam 9 behaves like the core of the structural beam shown in FIG 3A, and keeps the upper and lower structural layers 7, separated at a stable distance during deformations.
  • FIG. 3C shows the same section of the beam indicated in 3A, but perimeter structural reinforcements 1 have been added in the central zone without deformation or neutral axis. These reinforcements, given their position, do not influence the flexural rigidity of the beam, which is widely known in structural engineering of beams.
  • FIG. 3E shows the typical section of the structural perimeter reinforcement where "a” is the width of the reinforcement section (1), and “b” is the height of the reinforcement. The figure also shows the orientation of the longitudinal reinforcing fibers. The "a” measure must always be greater than or equal to the "b” measure.
  • FIG. 3E corresponds to the detail or enlargement of the reinforcement section 1 shown in FIG ID.
  • FIG. 4A shows a type of reinforcement section, where the upper, lower and lateral edges are straight and the edges or edges are rounded.
  • FIG. 4B shows a type of reinforcement section, where the width is much greater than the height of the reinforcement
  • FIG. 4C shows a type of reinforcement section where the upper, lower and lateral edges are straight and the edges or edges are sharp.
  • FIG. 4D shows a type of reinforcement section where the upper and lower edges are convex and the lateral edges are straight.
  • FIG. 4E shows a type of reinforcement section where the upper and lower edges have a decreasing thickness towards the center of the board.
  • FIG. 4F shows a type of reinforcement section where the upper and lower edges are straight and the sides are semicircular.
  • FIG. 4G shows a section composed of several circular sections adjacent to each other.
  • FIG. 4H is a mixture of the geometries of the sections of FIG. 4D, and FIG. 4E.
  • FIG. 41 is a mixture of section geometries in FIG. 4D, and FIG. 4F.
  • the neutral axis of the section may be misaligned with the furthest point of the longitudinal axis of the table (most perimeter point), and thus do not coincide with the neutral axis 3. Therefore a difference or construction tolerance "c" can occur between the external face of the reinforcement (12) and the outermost point of the perimeter edge of the table (11).
  • FIG. 6 shows a section of the board with an insert (14) that can be foam, or other material of greater elastic modulus or strength than the foam used in 9.
  • FIG. 7 A shows a typical section in section with the location of the perimeter reinforcement (1).
  • FIG. 7B shows a typical section in section with the location of the perimeter reinforcement (1), with a partial section where the geometry of the reinforcement can be seen.
  • FIG. 7C similar to 7B, but with a total foam cut, with the location of the perimeter reinforcement (1), where the geometry of the reinforcement is appreciated.
  • the present invention maximizes the torsional strength of surfboards with a simple and efficient concept, which consists of a reinforcement 1, FIGIA, FIG1B, FIG1D, of a material with high mechanical characteristics that is inserted into the structural neutral axis 3 FIG 3A FIG3B, in the area where the maximum torsional deformations are generated with respect to the longitudinal axis 2, FIGIA, that is to say on the perimeter or outer edge of the table.
  • the reinforcement 1 does not influence the flexural behavior in the transverse axis 3, FIGIA, FIG3A, FIG3B. This allows maximizing the design and construction alternatives, since it makes the deformation by flexion independent of the torsion deformation.
  • the reinforcement 1 must have the minimum thickness "b" in FIG3E, possible, in the vertical direction 4 FIG IB, so that the moment of inertia to the bending of the respective section does not increase, thereby maintaining the transverse flexibility in axis 3 intact.
  • the width of the reinforcement "a" FIG3E, is greater than or equal to the thickness "b" FIG3E, of the reinforcement 1.
  • the most suitable materials for reinforcement are carbon fiber, fiberglass, wood with longitudinal fibers, aramid, and in general any material that can be adapted to the geometry required by the design.
  • the reinforcement 1 is a series of filaments parallel to each other that are wound in multiple passes through the perimeter of the table, 1 in FIG 2B.
  • This winding system can also be partial 5 FIG2A, or 6 FIG2A, or combinations of these solutions.
  • the perimeter reinforcement needs to be anchored to the structural surface of the board, at the junction of the upper layer 7 FIG6, with the lower layer 8, FIG6, in order to be able to absorb and transmit the shear loads derived from the external loads during use , that is the hydrodynamic load, and the load of the surfer's feet.
  • the highest percentage of reinforcement fibers 1 are parallel to each other.
  • the material used in the reinforcement 1 FIG3E has an elastic modulus greater than or equal to all other materials used in the table, this allows any deformation, the reinforcement 1, to absorb the load before any other structural component of the table and block torsion deformation.
  • the width "a" of the reinforcement 1 FIG3E will always be much smaller than the full width of the table, because the material of the reinforcement 1FIG3E close to the longitudinal axis 2 FIG1A does not provide torsion resistance because The deformations in that area are negligible.
  • the geometry of the section of the reinforcement 1 can be variable, as indicated in the figures: FIG 4A, FIG 4B, FIG 4C, FIG4D, FIG4E, FIG4F, FIG4G, FIG4H, FIG4I. As long as the average width "a" is greater than or equal to the average height "b" of the reinforcement section FIG3E.
  • the thicknesses "b" FIG3E, and widths "a” FIG3E, and the lengths of the reinforcement can be modified along the perimeter of the table.
  • the reinforcement 1 can be considerably increased in the central area of the board, modifying very little the flexion and weight of the board, but significantly increasing the resistance of the board to fracture.
  • the reinforcement 1 can, alternatively, be inserted in a foam of greater density 14 FIG6, than the rest of foam 9 FIG6 used in the table.
  • the outer edge of the reinforcement 1, during the construction process, or due to the final geometry of the board may not coincide with the maximum width of the board occurring between the outer edge of the reinforcement 12, and the outer edge of the table 11, a tolerance "c", FIG5.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un système de renfort structural pour planches de surf, qui permet de réduire au minimum la torsion dans l'axe longitudinal sans affecter négativement les propriétés de flexion dans l'axe transversal. Le renfort est constitué de fibres longitudinales à haut module élastique et résistance élevée à la tension. Ledit renfort se situe au niveau de la zone périphérique des planches, plus spécifiquement au niveau de la surface correspondant à la position de la fibre neutre de la section transversale respective. En outre, le renfort permet une augmentation de la résistance intégrale des planches aux fractures transversales.
PCT/CL2013/000102 2013-02-06 2013-12-30 Système de renfort structural bilatéral périphérique pour planches de surf, dans l'axe neutre sectionnel Ceased WO2014121413A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CL2013000377A CL2013000377A1 (es) 2013-02-06 2013-02-06 Refuerzo estructural de tabla de surf que mejora significativamente el comportamiento por torsion consiste en una pieza estructural que se ubica en ambos bordes de la tabla, especificamente en el eje neutro de la seccion transversal.
CL377-2013 2013-02-06

Publications (1)

Publication Number Publication Date
WO2014121413A1 true WO2014121413A1 (fr) 2014-08-14

Family

ID=51299136

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CL2013/000102 Ceased WO2014121413A1 (fr) 2013-02-06 2013-12-30 Système de renfort structural bilatéral périphérique pour planches de surf, dans l'axe neutre sectionnel

Country Status (2)

Country Link
CL (1) CL2013000377A1 (fr)
WO (1) WO2014121413A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3514798A (en) * 1968-02-01 1970-06-02 Robert Ellis Surf-board construction and method of making same
US3996868A (en) * 1974-05-14 1976-12-14 Fa. Immobilien Commerce Estbl. Dr. Ivo Beck Windsurfer
FR2336954A1 (fr) * 1975-12-30 1977-07-29 Labat Jacques Procede de fabrication d'une planche d'hydroplanage et produits ainsi obtenus
US20060276087A1 (en) * 2005-06-04 2006-12-07 Conner Edison S Jr Surfboard having a honeycomb core
US20070131346A1 (en) * 2003-12-10 2007-06-14 Bertrand Kraftt Gliding board and method of manufacture
WO2008138061A1 (fr) * 2007-05-15 2008-11-20 Hayden Cox Pty Limited Planche de surf et procédé de construction

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3514798A (en) * 1968-02-01 1970-06-02 Robert Ellis Surf-board construction and method of making same
US3996868A (en) * 1974-05-14 1976-12-14 Fa. Immobilien Commerce Estbl. Dr. Ivo Beck Windsurfer
FR2336954A1 (fr) * 1975-12-30 1977-07-29 Labat Jacques Procede de fabrication d'une planche d'hydroplanage et produits ainsi obtenus
US20070131346A1 (en) * 2003-12-10 2007-06-14 Bertrand Kraftt Gliding board and method of manufacture
US20060276087A1 (en) * 2005-06-04 2006-12-07 Conner Edison S Jr Surfboard having a honeycomb core
WO2008138061A1 (fr) * 2007-05-15 2008-11-20 Hayden Cox Pty Limited Planche de surf et procédé de construction

Also Published As

Publication number Publication date
CL2013000377A1 (es) 2013-04-05

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