Four acrylate-based networks were developed such that they possessed similar glass transition temperature (∼− 37 °C) but varied in material stiffness at room temperature by an order of magnitude (2–12 MPa). Thermo-mechanical and adhesion testing were performed to investigate the effect of elastic modulus on adhesion profiles of the developed samples. Adhesion experiments with a spherical probe ...

In part I of this work, we presented a theory for adhesionless contact of a pressurized neo-Hookean plane-strain membrane to a rigid substrate. Here, we extend our theory to include adhesion using a fracture mechanics approach. This theory is used to study contact hysteresis commonly observed in experiments. Detailed analysis is carried out to highlight the differences between frictionless and ...

The goal of the present study is to prepare a room temperature cured hydrophobic and self-cleaning nano-coating for power line insulators. As a result, the installed insulators operating in power lines can be coated without being removed from the circuit and without the need to cut off power. For this purpose, hydrophobic silica nanoparticles were synthesized by sol-gel method using TEOS and HM...

Removal of degraded concrete during repair activities might have a detrimental impact on the bond strength between and mortar. This research aims to improve bonding in case aggressive removal techniques were used, by singular combined application bacterially induced CaCO3 colloidal nano-silica (CNS) treatments. Water jetting (WJ) jackhammering (JH) compared treatments performed substrates prepa...

Similar to dental cavities, in that the damaged area must be filled, concrete also suffers from spall damage during long-term service. Inspired by 3D printing a resin patch fits shape of tooth, an automated approach for repair is proposed, where structure filled layer-by-layer. It therefore essential ensure adhesion printed materials. In this study, printable mixtures were formulated and effect...

In these days, the world experiences an unprecedented demand for data and data services, driven mainly by the popularity of the Web services and by the evolution of the Internet towards an information super-highway. We introduce a hybrid scheduling that effectively combines broadcasting for very popular data (push data) and dissemination upon-request for less popular data (pull data) in asymmet...

We have developed a method to identify when a student essay is off-topic, i.e. the essay does not respond to the test question topic. This task is motivated by a real-world problem: detecting when students using a commercial essay evaluation system, Criterion, enter off-topic essays. Sometimes this is done in bad faith to trick the system; other times it is inadvertent, and the student has cut-...

Abstract Polymer-impregnated carbon fabric is used as an alternative to metallic reinforcement bars in cementitious materials, which then termed textile-reinforced concrete (TRC). In this study, the bond strength between cement-based matrix and was enhanced by decorating polymer (an epoxy) coating with hydrophilic micron-size particles (cement or silica) nanocarbons (functionalized nanotubes gr...

Low-noise lTL-compatible off-chip driver (OCD) circuits are very important, especially for low-power electronics, but scaled-down CMOS technology requires a lower operating voltage of 3.3 V, while most applications require 5 V. The dual power-supply requirement makes the design of OCD challenging, first because pull-up devices, especially p-MOS devices, must be able to handle an off-chip voltag...