نتایج جستجو برای: fiber reinforcement

تعداد نتایج: 168952  

2005
G. Fischer

Prefabricated modular housing structures have become a promising alternative to site-built structures with equal or higher engineering quality and durability. Major advantages of this technology are fast and cost-efficient construction, reduced labor requirements, and superior quality control due to factory production. The modular design of these prefabricated structures offers the opportunity ...

2015
Kaneyoshi Yoshida Yutaka Takahashi Ippei Hamanaka Tomohiro Kawaguchi Hirono Sasaki Hiroshi Shimizu

Objective: This study evaluated the reinforcing effect of glass fiber-reinforced composite (FRC) reinforcement on flexural strength at the proportional limit (FS-PL) of a repaired denture base resin. Materials and methods: Repaired denture base resins reinforced with metal and with FRC reinforcement, and that without reinforcement were tested. The ultimate flexural strength, the FS-PL and the e...

Journal: :Dental materials : official publication of the Academy of Dental Materials 2003
H H K Xu G E Schumacher F C Eichmiller R C Peterson J M Antonucci H J Mueller

OBJECTIVES Direct-filling resin composites are used in relatively small restorations and are not recommended for large restorations with severe occlusal-stresses. The aim of this study was to reinforce composites with fiber preforms, and to investigate the effects of layer thickness and configurations on composite properties. It was hypothesized that fiber preforms would significantly increase ...

2013
Khaled S. Ragab

This paper deals with behavior and capacity of punching shear force for flat slabs produced from steel fiber reinforced self compacting concrete (SFRSCC) by application nonlinear finite element method. Nonlinear finite element analysis on nine slab specimens was achieved by using ANSYS software. A general description of the finite element method, theoretical modeling of concrete and reinforceme...

2007
Intan Nirwana

Glass fiber reinforcement of the hybrid acrylic resin with difference method can enhance residual monomer content of the material; it can cause cytotoxic effect on fibroblast cells. The purpose of this study was to know the cytotoxicity of hybrid acrylic resins after glass fiber reinforcement with difference method on the cultured fibroblasts. The squared specimens of 10 mm in length, 10 mm in ...

2017
Amy M. Peterson Robert E. Jensen Giuseppe R. Palmese

Adhesion of the reinforcement to the polymer matrix is essential for load transfer from the polymer matrix to the reinforcement material in fiber-reinforced composites. The reversible Diels–Alder reaction between a furan-functionalized epoxy-amine thermosetting matrix with a maleimide-functionalized glass fiber was used to impart remendability at the polymer–glass interface for potential applic...

Esmaeil Yassine, Ladan Ranjbar Omrani, Mahdi Abasi, Mahdi Pournaghdi, Mansooreh Mirzaee, Masoumeh Hasanitabatabaee, Mohammad Javad Kharazifard,

Background and Aim: Debonding is the most commonly encountered failure in teeth restored with fiber posts that mainly occurs at the weakest interface (dentin-cement interface). Thus, reinforcement of this interface is mandatory. The aim of this study was to evaluate the effect of different root dentin surface treatments after post space preparation on bond strength of fiber posts cemented with ...

2011
J. G. Kovács

1 Abstract The warpage characterizations of injection molded plastic parts are not standardized and very challenging due to its complex process. This paper presents a novel examination method of the deformation of injection molded plastic parts especially for fiber reinforced materials. A special, but simple part was introduced for the description of the effect of different technological parame...

Journal: :iranian endodontic journal 0
hassan torabzadeh amir ghassemi masoud sanei sara razmavar seyedeh mahsa sheikh-al-eslamian

introduction: this in vitro study evaluated the influence of composite thickness (with or without fiber reinforcement) on fracture resistance of direct restorations in endodontically treated teeth. methods and materials: fifty-six intact human premolars were chosen and randomly divided into four groups ( n =14). after preparation of a mesio-occluso-distal (mod) cavities and cusp reduction, the ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1389

abstract: country’s fiber optic network, as one of the most important communication infrastructures, is of high importance; therefore, ensuring security of the network and its data is essential. no remarkable research has been done on assessing security of the country’s fiber optic network. besides, according to an official statistics released by ertebatat zirsakht company, unwanted disconnec...

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