In-line flaw detection of pultruded profiles by air-coupled ultrasound

The article deals with the task of simplifying the reverse design process by implementing three-point 3D scanning, which allows you to speed up the technological stages of reverse design to the moment of product manufacture, as well as simplify the procedure for defecating finished products and create favorable conditions for the implementation of the principles of unification. The model of the control system in this article refers to the structuring of elements of the technological organization of the process of creating 3D prototyping of existing copies created by the use of reverse engineering. For this purpose, the problems of traditional technologies that do not allow timely coping with changes in the technical system under the influence of in accordance with the requirements of regulatory documents and environmental requirements were considered. We also analyzed not only the principles of operation of traditional technologies, but also the zone of reverse engineering, which allows you to achieve an increased level of production capacity by identifying a group of key defects based on the process of flaw detection and statistical analysis.

Download Full-text

Textile fabric flaw detection using singular value decomposition

The 2010 International Conference on Green Circuits and Systems ◽

10.1109/icgcs.2010.5543033 ◽

2010 ◽

Cited By ~ 2

Author(s):

K.L. Mak ◽

X. W. Tian

Keyword(s):

Singular Value Decomposition ◽

Flaw Detection ◽

Singular Value ◽

Value Decomposition ◽

Textile Fabric

Download Full-text

A reconfigurable soft wall-climbing robot actuated by electromagnet

International Journal of Advanced Robotic Systems ◽

10.1177/1729881421992285 ◽

2021 ◽

Vol 18 (2) ◽

pp. 172988142199228

Author(s):

Wendong Zhang ◽

Wen Zhang ◽

Zhenguo Sun

Keyword(s):

Working Conditions ◽

Horizontal Plane ◽

Vertical Wall ◽

Flaw Detection ◽

Surface Cleaning ◽

Electromagnetic Actuator ◽

Climbing Robot ◽

Soft Wall ◽

Power Frequency

This article demonstrates a reconfigurable soft wall-climbing robot actuated by electromagnet. The robot follows the earthworm movement gait and is capable of translation, deflection, and rotation movement while working on a sloping ferromagnetic wall. Also the electromagnetic actuator provides a significant improvement in expeditiousness compared with existing actuation modes. The speed of the robot can be adjusted by modulating the power frequency. When the period of motion cycle is 30 ms, the speed is about 26.5 mm s−1, and the robot can rotate with a velocity of 14.1° s−1 on the horizontal plane. It can also climb a vertical wall at the speed of 12.6 mm s−1. The robot is composed of two kinds of modules which can be connected by the magnets embedded. It can also be reconfigured in different working conditions, such as crossing an inaccessible gap, and thus has the potential to be used in flaw detection, surface cleaning, and exploration of ferromagnetic structures.

Download Full-text