In this research, a new type of corrosion monitoring technique for reinforce concrete was developed. The technique used piezoelectric sensors to detect the ultrasonic signals during corrosion. The mechanism of the method was presented. Experiment was carried out to monitor the corrosion process using piezoelectric sensors. The corrosion was also monitored using stain gauge for comparison.

Abstract: The boundary value problems involving contact are of the great importance in industries related to mechanical and materials engineering. These mixed problems are challenging since a priori unknown deformed surface of the material contacting a rigid indenter is to be determined as a part of the solution. Anisotropic solids represent an important class of engineering materials including...

A combination of a "top-down" approach (substrate-conformal imprint lithography) and two "bottom-up" approaches (dewetting and dealloying) enables fabrication of perfectly ordered 2-dimensional arrays of nanoporous gold nanoparticles. The dewetting of Au/Ag bilayers on the periodically prepatterned substrates leads to the interdiffusion of Au and Ag and the formation of an array of Au-Ag alloy ...

the synthesis of nano- structured cobalt through a controlled chemical process followed by heat treating at various temperatures is studied. the product is characterized by icp, xrd, fesem , and tem, indicating that the as- synthesized particles have an amorphous structure with 1.76 for co/b ratio, an average size of 50 nm. the transformation of intermediate phases into single phase nano- cryst...

introduction : recent investigations have attempted to improve regenerative endodontics with the help of stem cell therapy. in vitro studies have shown the ability of different agents to stimulate the differentiation of dental pulp stem cells (dpsc) into odontoblast-like cells. a combination of dexamethasone, β-glycerophosphate and vitamin d has been proven to induce a successful differentiatio...

Energy consumption share in construction part and dependent industries is about 40 percent of total energy consuming in Iran which is significant compared to other industries such as transportation, agriculture and therefore is of important. As energy consumption reduction and material durability improvement leads to cost reduction from one hand and environment pollution reduction on the othe...

The aim of this study was to evaluate the new version of Iranian EFL junior high school textbook (Prospect1) from the teachers’ perspectives. The participants included90experienced English teachers (42 females and 48 males) randomly selected from different junior high schools in different districts of Gilan province, Iran. The evaluation of the textbook was conducted quantitatively through a 5-...

This is an invited review of the new volume by Ayşe Gürsan-Salzmann (2016) entitled "The New Chronology of the Bronze Age Settlement of Tepe Hissar, Iran". University Museum Monograph 142, University of Pennsylvania Museum. 408 pages | 8 1/2 x 11 | 238 illus. ISBN 978-1-934536-83-4 | $69.95s | £45.50). In general, this reviewer finds the book to be of great interest to specialists and students ...