Search results for " fiberglass."

showing 2 items of 2 documents

Failure Map of Composite Laminate Mechanical Joint

2007

The aim of this research is to investigate the pin/hole contact stress of a composite laminate and failure modes when submitted to tensile bearing tests. The limit loads and failure modes are evaluated as a function of pin diameter and hole position. Analyzing the joint geometry effect on the fracture mechanisms, a failure map is obtained, identifying three regions of typical failure modes of mechanically fastened joints. A theoretical approach is proposed to identify the field of each fracture mode to obtain a simple experimental methodology to support the design of a particular joint laminate. In addition, a simplified numerical model is proposed to evaluate near the hole the stress/stra…

Materials scienceComposite number02 engineering and technologycompositesfailure modeslaw.inventionStress (mechanics)0203 mechanical engineeringlawUltimate tensile strengthMaterials ChemistryComposite materialJoint (geology)bearingBearing (mechanical)business.industryMechanical EngineeringfiberglassStructural engineering021001 nanoscience & nanotechnologycomposites bearing failure modes fiberglass.Settore ING-IND/22 - Scienza E Tecnologia Dei Materiali020303 mechanical engineering & transportsContact mechanicsMechanics of MaterialsMechanical jointCeramics and CompositesFracture (geology)0210 nano-technologybusinesscomposites; bearing; failure modes; fiberglassJournal of Composite Materials
researchProduct

Redesign of the Geometry of Parts Produced from PBT Composite to Improve Their Operational Behavior

2021

Parts produced from PBT-GF30 (70% polybutylene terephthalate +30% fiberglass) are very often used in car construction, due to the properties of this material. The current trend is to make parts with a shape designed to be as complex as possible, to take over many functions in operation. During the research, a part that is a component of the structure of car safety systems, and that must be completely reliable in operation, was analyzed. This piece has a complex shape that involves the intersection of several walls. Thus, the research aimed at establishing the optimal radius of connection between the walls (R), the ratio between the thickness of the intersecting walls (K) and the angle of in…

Materials sciencePolymers and Plasticsinjection moldingComposite numberOrganic chemistry02 engineering and technology010402 general chemistry01 natural sciencesDisplacement (vector)Articlechemistry.chemical_compoundQD241-441IntersectionShear stressbusiness.industryProcess (computing)General ChemistryRadiusStructural engineering021001 nanoscience & nanotechnology0104 chemical sciencesartificial agingPolybutylene terephthalatePBT-GF30 (70% polybutylene terephthalate +30% fiberglass)chemistrycomposite central designViscosity (programming)viscosity0210 nano-technologybusinessPolymers
researchProduct