Abstract: In the last decade, small-diameter tunneling technology has improved considerably. As a result, the use of this technology is expected to increase dramatically [1]. For example, one microtunneling ...

Abstract: This paper proposes a miniature mobile robot that uses piezo vibration to move within a thin tube. The robot consists of a piezo bimorph with elastic fins attached at an angle. Robot movement ...

Abstract: This paper presents a three-dimensional shape-reconstruction system that employs an ultrasonic distance sensor placed on a manipulator. This system can not only reconstruct the shape of an object, ...

Abstract: A new resin mortar has been developed to facilitate a small-diameter shield tunneling method. The breaking elongation, Young’s modulus and tensile strength of the resin mortar are measured and ...