scholarly journals A Robotic System for Surface Measurement Via 3D Laser Scanner

2012 ◽  
Author(s):  
Canduo Shen ◽  
Sheng Zhu
Keyword(s):  
Laser Scanner ◽  
Robotic System ◽  
Surface Measurement

Fracture Surface Measurement of Concrete with Respect to Loading Speed

2014 ◽  
Vol 982 ◽  
pp. 94-99 ◽  
Author(s):  
Michal Mára ◽  
Petr Maca
Keyword(s):  
Fracture Surface ◽  
Reverse Engineering ◽  
Impact Loading ◽  
High Performance ◽  
High Performance Concrete ◽  
Laser Scanner ◽  
Plain Concrete ◽  
3D Models ◽  
Measured Data ◽  
Surface Measurement

Reverse engineering is a specialization which was developed a lot in the 21st century. The major aim is researching and describing the principals and procedures of process and structures. Reverse engineering in civil engineering is used to describe the applied loadings which caused corruption or failure of a structure or it is used to reconstruct 3D models of the original object. The aim of this paper is to compare response to static and impact loading of two materials, i.e. plain concrete and high-performance concrete (HPC), with respect to the fracture surface area. These areas were scanned by the 3D laser scanner and they were evaluated in the graphic programs. The main objective of this paper is a presentation of measured data, which can be used to determine the size of the applied loadings using reverse engineering.

scholarly journals A Robotic System to Scan and Reproduce Object

2011 ◽  
Vol 2011 ◽  
pp. 1-11
Author(s):  
Cesare Rossi ◽  
Sergio Savino
Keyword(s):  
High Speed ◽  
Mechanical Engineering ◽  
Vision System ◽  
Laser Scanner ◽  
Robotic System ◽  
Robot Arm ◽  
End Effector ◽  
Laser Projector ◽  
Cloud Of Points ◽  
Linear Laser

An application of a robotic system integrated with a vision system is presented. The robot is a 3-axis revolute prototype, while the vision system essentially consists in a laser scanner made up of a camera and a linear laser projector. Both the robotic and the video system were designed and built at DIME (Department of Mechanical Engineering for Energetics), University of Naples Federico II. The presented application essentially consists of a laser scanner that is installed on the robot arm; the scanner scans a 3D surface, and the data are converted in a cloud of points in the robot’s workspace. Then, starting from those points, the end-effector trajectories adopted to replicate the scanned surface are calculated; so, the same robot, by using a tool, can reproduce the scanned object. The software was developed also at the DIME. The adopted tool was a high-speed drill, installed on the last link of the robot arm, with a spherical milling cutter in order to obtain enough accurate surfaces by the data represented by the cloud of points. An algorithm to interpolate the paths and to plan the trajectories was also developed and successfully tested.

Surface measurement puzzle[ellipsis (horizontal)] the authors reply

1978 ◽  
Vol 57 (4) ◽  
pp. 10
Author(s):  
A. Harvie ◽  
J.S. Beattie
Keyword(s):  
Surface Measurement

Surface measurement puzzle[ellipsis (horizontal)]

1978 ◽  
Vol 57 (4) ◽  
pp. 10
Author(s):  
T.R. Thomas ◽  
H.C. Ward
Keyword(s):  
Surface Measurement

Microsurgery Robotic System for the Deep Complicated Procedures: Progress and Future

Skull Base ◽  
2007 ◽  
Vol 17 (S 1) ◽  
Author(s):  
Akio Morita ◽  
Ryo Mochizuki ◽  
Mamoru Mitsuishi ◽  
Shigeo Sora
Keyword(s):  
Robotic System

Hadrian X - Autonomous Robotic System for Bricklaying

2019 ◽  
Vol 5 (6) ◽  
pp. 254-258
Author(s):  
A. Bystrova ◽  
◽  
N. Dembovskii ◽  
S. Sorokina ◽  
D. Dedyaev ◽  
...  
Keyword(s):  
Robotic System

Evaluation of geometrical benchmark artifacts containing multiple overhang lengths fabricated using material extrusion technique

2020 ◽  
Vol 14 (3) ◽  
pp. 7296-7308
Author(s):  
Siti Nur Humaira Mazlan ◽  
Aini Zuhra Abdul Kadir ◽  
N. H. A. Ngadiman ◽  
M.R. Alkahari
Keyword(s):  
3D Model ◽  
Laser Scanner ◽  
Dimensional Accuracy ◽  
Fused Deposition Modelling ◽  
Layer By Layer ◽  
Fused Deposition ◽  
Layer Technique ◽  
Subtractive Manufacturing ◽  
Manufacturing Features ◽  
Layer Problem

Fused deposition modelling (FDM) is a process of joining materials based on material entrusion technique to produce objects from 3D model using layer-by-layer technique as opposed to subtractive manufacturing. However, many challenges arise in the FDM-printed part such as warping, first layer problem and elephant food that was led to an error in dimensional accuracy of the printed parts especially for the overhanging parts. Hence, in order to investigate the manufacturability of the FDM printed part, various geometrical and manufacturing features were developed using the benchmarking artifacts. Therefore, in this study, new benchmarking artifacts containing multiple overhang lengths were proposed. After the benchmarking artifacts were developed, each of the features were inspected using 3D laser scanner to measure the dimensional accuracy and tolerances. Based on 3D scanned parts, 80% of the fabricated parts were fabricated within ±0.5 mm of dimensional accuracy as compared with the CAD data. In addition, the multiple overhang lengths were also successfully fabricated with a very significant of filament sagging observed.

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