Recent Patents on Engineering - Volume 12, Issue 3, 2018

Background: The research on the wake will benefit the efficiency of wind turbines and the arrangement of wind turbines in wind power plant. It is an important subject of research in recent years, and the research on the wake of the vertical axis wind turbine is still at the exploratory stage. In the process of wake study, the classic Jensen wake model was proposed by Danish scientist N.O. Jensen in the 1980s. Objective: In order to Read More

Background: Chitosan is an eminent biopolymer which has the -OH and -NH2 groups on its surface. Chitosan in its raw form has some limitations. Hence, to increase its efficiency for taking up the contaminants, it can be modified using different chemicals. Lead is the one amongst all toxic elements on the earth. Despite its toxicity, it is very much used in the industrial processes related to our daily life. As a consequence, lea Read More

Background: In the five-axis milling process of aviation integral impeller, the cutter axis vector is changed dramatically. It leads to marks on the finished surface, even the damage of it, and the chatter is easy to occur. So the machining precision is difficult to guarantee. Objective: For solving this problem, a research on five-axis NC simulation and parameter optimization for aviation integral impeller was carried out. Methods: Read More

Background: Bubbly flows can frequently be seen in engineering fields such as fermentation reactions, floatation of minerals, drag reduction by bubbles, etc. The physical parameters often change in industrial processes, so it is important to conduct extensive studies on the influence of gas- and liquid- phase parameters on the liquid turbulence. Objective: The extensive studies are performed on the liquid turbulence modulati Read More

Background: The cracking load is an important parameter in the design and testing of beam structures according to the recent patents. Compared to ordinary concrete, recycled aggregate concrete components are more prone to cracking. Methods: In this paper, the calculation method and the size effect of the cracking load for the recycled aggregate concrete beam were studied. Four recycled aggregate concrete beams with Read More

Background: Dissolved Gas Analysis (DGA) is an effective method to detect the potential fault of oil immersed transformer, while the ratio method based on DGA technology has some defects. Objective: This study aims to timely comprehend the transformer condition and accurately predict the incipient fault. Methods: By investigating the recently published papers and patents relating to transformer fault diagnosis, a novel diagn Read More

Background: Needle insertion is commonly used in minimally invasive surgery. Cannula flexible needle, as one of the insertion needles is composed of a flexible cannula and a flexible stylet, both of which need to be driven independently. The coordination control of both motions can achieve a variety of 3D insertion paths according to recent patents. Objective: This paper is to innovatively design an insertion mechanism for the Read More

Background: Diamond is a precious stone and is considered as a safe investment, provided purchased from a trustworthy certified brand. The buyer should be very much cautious in purchasing precious stones and therefore needs decision making skills. The selection of a diamond depends on various factors like shape and 4C's: Cut, color, clarity, carat weight. Every buyer is not aware of these factors. A customer has no cho Read More

Background: Wearable power assist robot is a new type of electromechanical integration device designed to imitate the biological exoskeleton. The device can be worn by the user, providing the user with body support, movement assistance and power-assisted functions. In recent years, patents suggest that wearable assist robots have been widely used in the field of human limb rehabilitation. The patients can use the robot to ca Read More

Background: Windblown sand mitigation for civil structures in arid environment is crucial. Indeed, the number of railways crossing deserts and arid lands is increasing. A number of sand mitigation measures already exist. Among them, sand barriers are particularly intended for line-like infrastructures. We reviewed patented sand barriers on the basis of their shape and porosity. Objective: A new solid barrier for windblow Read More