Pesticides are the basis for defending against major biological disasters and important for ensuring national food security. Biocompatible, biodegradable, intelligent, and responsive materials are currently an emerging area of interest in the field of efficient, safe, and green pesticide formulation. Using nanotechnology to design and prepare targeted pesticides with environmentally responsive ...

We fabricate a simple, compact, and stable temperature sensor based on a liquid-sealed photonic crystal fiber (PCF) in-line nonpolarimetric modal interferometer. Different from other reported PCF devices, it does not need expensive polarimetric devices, and the liquid is sealed in one fiber. The device consists of a stub of isopropanol-filled PCF spliced between standard single-mode fibers. The...

Three-dimensional nonlinear thermal and thermo-mechanical numerical simulations are conducted for the friction stir welding (FSW) of 304L stainless steel. The finite element analysis code—WELDSIM, developed by the authors specifically for welding simulation, was used. Two welding cases with tool rotational speeds of 300 and 500 rpm are analyzed. The objective is to study the variation of transi...

Abstract We present a first-order recursive approach to sensitivity analysis based on the application of direct differentiation method inverse Lagrangian dynamics rigid multibody systems. Our is simple and efficient characterized by following features. Firstly, it describes kinematics systems using branch connectivity graphs joint-branch matrices. For most mechanical with an open-tree kinematic...

Liquid sealing is an effective method to convert a fiber-optic refractometer into a simple and highly sensitive temperature sensor. A refractometer based on the thin-core fiber modal interferometer is sealed in a capillary tube filled with Cargille oil. Due to the thermo-optic effect of the sealing liquid, the high refractive-index sensitivity refractometer is subsequently sensitive to the ambi...

In view of developing a physics-based constitutive material model for AA7075-T651, the mechanical behavior and microstructure evolution has been studied through compression tests using Gleeble thermo-mechanical simulator. The were performed at wide range temperatures (room temperature (RT), 100, 200, 300, 400 500 °C) with two constant strain rates (0.01 1 s-1). true stress-strain curves depicte...