Long flexible polymers undergo a coil to stretch transition (CST) in an elongational flow. Near the CST, a peak can be observed in the fluctuations of the size of a molecule (|R|). Solvent effects on the fluctuations are studied using Brownian dynamics simulations of a nonlinear spring force relation that can represent real molecules. Ignoring the influence of hydrodynamic interactions, a linea...

Blocks-in-Conduit is a novel approach to cable, coil, and splice technologies with unique benefits for high-current-density toroid winding operate at 20 T K. Blocks of REBCO tape are cabled in conduit, laminated structure thin-wall center-tube that provides twist along the spring-loaded stress management within cross-flow cooling throughout thick winding. The coil technology utilizes co-wound a...

In the actuation field, the most common shape memory alloy is quasi-equiatomic NiTi system, commercially known as Nitinol®. Ti-rich NiTi compounds show characteristic transformation temperatures higher than the room one and they can recover high values of deformation. Moreover, these intermetallic compounds are widely used since they exhibit high thermal and mechanical cycling stability. Other ...

On February 8, 2015 the Prime Minister has convened the first meeting of the National Institution for Transforming India (NITI Aayog) where Chief Ministers of all states and Lt. Governors of the union territories are expected to deliberate on major economic issues. The Prime Minister has also met eminent economists at NITI Aayog on February 6 to discuss about the economy and sought suggestions ...

The purpose of this study was to compare (a) forces generated during lateral compaction and (b) apical microleakage for nickel-titanium (NiTi) and stainless steel (SS) finger spreaders. Twenty-eight extracted human teeth were instrumented using a standardized rotary instrumentation technique. NiTi and SS #30 spreaders were used to obturate molar roots while the forces generated during obturatio...

We present an analytical and experimental study of a torsional magnetic spring where the restoring torque results from field interactions between rotating fixed permanent magnets (PMs). The cylindrical PM, called rotor, is supported on ball bearings two magnets, stators. Perturbing rotor its equilibrium angle induces whose effect ressembles spring. Along with this effect, dissipation mechanisms...

As crucial parts of various engineering systems, solenoid valves (SVs) operated by electromagnetic (EMS) are great importance and their failure may lead to cause unexpected casualties. This failure, characterized a degradation the performances SVs, could be due fluctuations in EMS parameters. These essentially attributed changes spring constant, coefficient friction, inductance, resistance coil...

We evaluated the mechanical properties and torque/force generated during canal shaping by four NiTi files with innovative designs. Each of 52 TruNatomy Prime, XP-endo Shaper, Spring Endo unheated finish (Spring Endo), heated H) were subjected to bending, buckling, cyclic fatigue, torsional resistance tests (n = 10 per file type). Canal was simulated J-shaped resin blocks 10). Phase transformati...

The corrosion behavior of high stiffness NiTiCo shape memory alloys was systematically investigated in the present study including straight wires, wire formed stents, and laser cut stents. It was found that the corrosion behavior of NiTiCo alloys is comparable to that of binary NiTi. This is attributed to the small amount of cobalt used in the ternary alloy. Additionally, the corrosion resistan...