Laboratory study and performance evaluation of a new type of prime coat material used on cement treated base

In-pipe robots are usually used to carry many kinds of equipment to operate in the pipeline. In this article, a novel self-locking mechanism for continuous propulsion inchworm in-pipe robot is proposed. The constant power and continuous locomotion principle is obtained by upgrading the traditional pipeline robot. The structure of the inchworm in-pipe robot is designed including self-locking mechanism and telescopic mechanism. The operating principle of self-locking mechanism is analyzed for parameter design and performance evaluation. A new type of hydraulic cylinder series circuit is introduced, which realizes synchronous motion in the related mechanisms of pipe robot. And the dynamic characteristics of the hydraulic cylinders are analyzed and simulated to verify feasibility of the circuit. The prototype is developed to prove that the novel inchworm in-pipe robot can adapt to diameter of 140–180 mm pipe and has 550 N traction ability with the average speed of 0.11 m/s.

Download Full-text

A New Type of Surfactant in the Synthesis and Performance Evaluation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.774-776.960 ◽

2013 ◽

Vol 774-776 ◽

pp. 960-963

Author(s):

Qing Wang Liu ◽

Pan Niu

Keyword(s):

Performance Evaluation ◽

Surface Activity ◽

Gemini Surfactants ◽

High Surface ◽

Chemical Compounds ◽

Theoretical Support ◽

New Type ◽

And Performance ◽

New Generation ◽

High Surface Activity

Gemini surfactants are chemical compounds known as new generation of surfactants that their molecules has two hydrophilic groups ,two hydrophobic groups and a spacer.They have low CMC value and high surface activity.Gemini surfactants are inapproachable by any surfactants that are used for TOR nowadays.This essay is meant to solve the problems faced in the territory by using the remarkably high surface activity,introducing Gemini surfactants to TOR and launch series of experiments.Meanwhile,it provides technical and theoretical support for applying Gemini surfactants into the field.

Download Full-text

Simulation and performance evaluation of a new type of powered Dynamic Ankle Foot Orthosis

2011 IEEE Colloquium on Humanities, Science and Engineering ◽

10.1109/chuser.2011.6163709 ◽

2011 ◽

Cited By ~ 2

Author(s):

Mohd Nor Azmi Bin Ab. Patar ◽

Mohamad Mali ◽

Mohd Hanif Mohd Ramli ◽

Ahmad Khushairy Makhtar ◽

Jamaluddin Mahmud

Keyword(s):

Performance Evaluation ◽

Ankle Foot Orthosis ◽

New Type ◽

And Performance ◽

Foot Orthosis

Download Full-text

Synthesis and Performance Evaluation of Modified Asphalt–Based Trackless Tack Coat Material

Journal of Materials in Civil Engineering ◽

10.1061/(asce)mt.1943-5533.0002812 ◽

2019 ◽

Vol 31 (9) ◽

pp. 04019202

Author(s):

Jing Li ◽

Shaochan Duan ◽

Yaseen Muhammad ◽

Yu Liu ◽

Dianhao Hou ◽

...

Keyword(s):

Performance Evaluation ◽

Modified Asphalt ◽

Tack Coat ◽

And Performance ◽

Coat Material

Download Full-text

Design, implementation, and performance evaluation of a 4-DOF parallel robot

Robotica ◽

10.1017/s0263574709005621 ◽

2009 ◽

Vol 28 (1) ◽

pp. 107-118 ◽

Cited By ~ 18

Author(s):

Hee-Byoung Choi ◽

Atsushi Konno ◽

Masaru Uchiyama

Keyword(s):

Performance Evaluation ◽

Parallel Mechanism ◽

High Speed ◽

Parallel Robot ◽

Necessary Condition ◽

Parallel Mechanisms ◽

System Configuration ◽

Tracking Accuracy ◽

New Type ◽

And Performance

SUMMARYThis paper deals with the design, implementation, and performance evaluation of a new type of 4-DOF parallel mechanism providing three translations and one rotation for high-speed handling and machining. This parallel mechanism is named H4. A necessary condition and system configuration of the H4 are also described. Hardware and kinematics of the H4 is addressed and the manipulability ellipsoid which is one of the widely used methods to examine the design of parallel mechanisms is addressed. The performance evaluation is carried out to demonstrate the H4 robot. The simulation and experimental results show that three different controllers, the PD, PD + velocity feed-forward, and dynamic compensation controller, dramatically improve the trajectory tracking accuracy.

Download Full-text