JPH0262736B

PURPOSE:To prevent the occurrence and progress of crack and to prevent deterioration in durability, by a method wherein fibers having no directional property are used in opposite ends, in the direction of width, of an FRP leaf spring used in a car suspension device. CONSTITUTION:An FRP leaf spring 1...

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Bibliographic Details
Main Author MISUMI ATSUSHI
Format Patent
LanguageEnglish
Published 26.12.1990
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
BLASTING
CHEMISTRY
COMPOSITIONS BASED THEREON
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
GENERAL PROCESSES OF COMPOUNDING
HEATING
INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES
INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS
LIGHTING
MEANS FOR DAMPING VIBRATION
MECHANICAL ENGINEERING
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PERFORMING OPERATIONS
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
SHOCK-ABSORBERS
SPRINGS
THEIR PREPARATION OR CHEMICAL WORKING-UP
THERMAL INSULATION IN GENERAL
TRANSPORTING
WEAPONS
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
WORKING-UP
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Summary:PURPOSE:To prevent the occurrence and progress of crack and to prevent deterioration in durability, by a method wherein fibers having no directional property are used in opposite ends, in the direction of width, of an FRP leaf spring used in a car suspension device. CONSTITUTION:An FRP leaf spring 10 is formed such that reinforced fibers are hardened by the use of matrix resin 13, and one-way reinforced fibers 16, properly arranged rectilinearly along the longitudinal direction of the leaf spring, are used in an intermediate portion 15 except opposite ends 14 in the direction of the width of the plate. Further, non-rectilinear reinforced fibers 17 having no directional property are used in the opposite ends 14 in the direction of width. This, even if the end part in the direction of width is damaged and as a result the fibers are broken, prevents progress of crack because of the fiber having no directional property, resulting in the possibility to maintain durability.
Bibliography:Application Number: JP19830231909