نتایج جستجو برای: fiber reinforced medium
تعداد نتایج: 396027 فیلتر نتایج به سال:
As the fuel efficiency of vehicles is being increased over the next decade due to both consumer demand and regulations, several automobile manufacturers are incorporating fiber-reinforced composites into their product line due to their high strength to weight ratio. While the fiber-reinforced components are lighter than the traditional aluminum and steel components, the processing and repair of...
15 The structural build-up of rigid fiber reinforced cement-based materials is studied. It has 16 recently been shown that the behaviour of fiber reinforced concrete depends on the orientation 17 of the fibers that has to be optimized during casting. As a result, there is a great interest to 18 study the rheology of fiber reinforced concrete. One of the most important characteristic of 19 moder...
Porosity is a result of a deficiency in the production process that could lead into the mechanical degradation of CFRP composite structures. Therefore, some checkpoints for determining its presence during part manufacturing have to be established, verifying that precise threshold values are not exceeded. Currently, porosity characterization is carried out by an indirect way using ultrasonic tec...
Carbon fiber reinforced polymers (CFRPs) have found wide-ranging applications in numerous industrial fields such as aerospace, automotive, and shipping industries due to their excellent mechanical properties that lead to enhanced functional performance. In this paper, an experimental study on edge trimming of CFRP was done with various cutting conditions and different geometry of tools such as ...
The compressive response of polymer matrix fiber reinforced unidirectional composites (PMC’s) is investigated via a combination of experiment and analysis. The study accounts for the nonlinear constitutive response of the polymer matrix material and examines the effect of fiber geometric imperfections, fiber mechanical properties and fiber volume fraction on the measured compressive strength an...
Intraradicular posts are useful adjuncts in the restoration of endodontically treated teeth. These systems have undergone a significant evolution in recent years, and fiber-reinforced systems have started to be incorporated into routine clinical care more frequently. Despite the high number of laboratory studies pertaining to the characteristics of fiber posts, clinical studies evaluating their...
Fiber reinforced composites (FRCs) are more and more widely applied in dentistry to substitute for metallic restorations: periodontal splints, fixed partial dentures, endodontic posts, orthodontic appliances, and some other indirect restorations. In general in FRCs, the fiber reinforcement provides the composite structure with better biomechanical performance due to their superior properties in...
Background. Acrylic resins used in restorative dentistry are the most popular denture base material, because they have good optical properties and small solubility in body fluids. However their mechanical properties are limited and therefore acrylic resins require different methods of reinforcement one of which can be application of different kinds of fibers. Objectives. To investigate the effe...
OBJECTIVE The objective of this study is to evaluate the fracture resistance of newer restorative materials that could serve as an alternate to crown coverage. MATERIALS AND METHODS Forty extracted human mandibular molar teeth were selected for this study and were divided into four groups (n = 10). All the teeth in the experimental groups (Group 2-4) were subjected to access cavity preparatio...
The survival rate of fiber-reinforced composite inlay bridges after two million load cycles: An in vitro study Dr. F. Darabi* - Dr. A. Mirfazaelian** - Dr. H. Naseri*** *Assistant Professor of Operative Dentistry Dept. - Faculty of Dentistry – Guilan University of Medical Sciences. **Assistant Professor of Removable Prosthodontics Dept. Faculty of Dentistry – Tehran University of Medical Scienc...
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