نتایج جستجو برای: پدیده debonding
تعداد نتایج: 27273 فیلتر نتایج به سال:
Interfacial mechanical properties of carbon/glass hybrid thermoplastic epoxy composite rods play a crucial role in the determination strength and fracture behavior. In this study, push-out push-back tests using three with different ratios were performed to investigate interfacial shear mechanism. Debonding occurred at interface between glass fiber bundles epoxy. After onset debonding, sinusoida...
The objectives of this study were to retrospectively evaluate the clinical survival rate of flexible, braided, rectangular bonded stainless steel lingual retainers, and to investigate the influence of gender, age of the patient, and operator experience on survival after orthodontic treatment at the Department of Orthodontics, University of Groningen, between the years 2002 and 2006. The study g...
Background and Aim: This study aimed to evaluate the effect of repeated bonding by self-etching primers (SEPs) and a conventional phosphoric acid-etchant on shear bond strength (SBS), adhesive remnant index (ARI), and enamel morphology at different debonding time points. Materials and Methods: In this experimental study, 120 premolars were randomly divided into six groups of 20. In the first t...
Temporary bonding/debonding (TBDB) technologies have greatly contributed to the reliable fabrication of thin devices. However, rapid development large-scale, high-precision and ultra-thin devices in semiconductor field has also proposed more stringent requirements for TBDB technologies. Here, we deliberate recent progress materials temporary bonding different debonding over past decade. Several...
Some of the advantages that results from the structural strengthening of concrete slabs using prestressed fiber reinforced polymer (FRP) systems are as follows: the prestressed FRP delays the formation and propagation of cracks, and both the serviceability and the flexural capacity are increased. In this research program, the flexural performance of a concrete slab strengthened with a three-sta...
Abstract Fibre Reinforced Polymers (FRPs) are extensively employed to strengthen existing structures because of their several advantages over other strengthening techniques. On the hand, premature debonding FRP reduces its effectiveness in steel structures. Anchoring composites is an effective solution delay or even prevent debonding. Very limited anchorage methods, however, have been introduce...
Damage in composite materials occurs at multiple scales, from matrix cracking and fiber/matrix debonding to ply delamination, and is complicated due to the different failure mechanisms interacting with the composite microstructure. Recent progress in the development of advanced techniques for structural health monitoring (SHM) has been aimed at techniques capable of sensing damage in situ and i...
تحقیقات آزمایشگاهی و عددی در مورد مقاوم سازی تیرهای سراسری پس کشیده بتن مقاومت بالا با تاندون های بدون پیوستگی، به کمک کامپوزیت های پلیمری (frp وfiber reinforced polymer) بسیار اندک می باشد. در ایران یک برنامه تحقیقاتی گسترده و هدف دار در این زمینه در بخش مهندسی عمران دانشگاه شهید باهنر کرمان، زیر نظر استاد راهنمای این پایان نامه طرح و همچنان در حال گسترش می باشد. لذا در این تحقیق به ارزیابی عد...
A multi-scale methodology that includes microscale finite element simulations, physical experiments, and a macroscale phenomenological model was used to determine the appropriate first-order influence parameters relating to void/ crack nucleation. The finite element analyses were used to examine the role of seven independent features (number of silicon particle sites, uniformity of particle siz...
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