scholarly journals Characterization of Macro- and Micro-Geomorphology of Cave Channel from High-Resolution 3D Laser Scanning Survey: Case Study of Gomantong Cave in Sabah, Malaysia

2017 ◽  
Author(s):  
Mohammed Oludare Idrees ◽  
Biswajeet Pradhan
Keyword(s):  
High Resolution ◽  
Laser Scanning ◽  
3D Laser Scanning

scholarly journals Application of BIM and 3D Laser Scanning for Quantity Management in Construction Projects

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Thu Anh Nguyen ◽  
Phong Thanh Nguyen ◽  
Sy Tien Do
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Laser Scanning ◽  
Essential Role ◽  
Industrial Revolution ◽  
Management Process ◽  
3D Laser Scanning ◽  
Economic Sectors ◽  
Construction Companies

The construction industry has played an essential role in the process of modernization and industrialization and it has also been a major factor in determining the development of the infrastructure for other economic sectors. Construction companies consider the measurement of work progress, which often wastes time and has a low resolution, to be one of the most challenging problems faced by project management. Therefore, this research aimed to propose practical solutions by applying recent technological achievements of the 4.0 industrial revolution to improve the efficiency of the quantity management process. By utilizing the advantages and features of a BIM model and 3D laser scanning, this paper proposes that adopting a BIM model and 3D laser scanning has the potential to improve the accuracy and efficiency of the quantity management process. The case study demonstrated some typical tasks to evaluate accuracy and efficiency as well as to showcase the research proposal.

scholarly journals THE INTEGRATED 3D SURVEY FOR PLANNED CONSERVATION: THE FORMER CHURCH AND CONVENT OF SANT'AGOSTINO IN BERGAMO

2019 ◽  
Vol XLII-2/W9 ◽  
pp. 235-242 ◽  
Author(s):  
A. Cardaci ◽  
G. Mirabella Roberti ◽  
A. Versaci
Keyword(s):  
Laser Scanning ◽  
3D Laser Scanning ◽  
Time Effects ◽  
Innovative Methodology ◽  
Periodic Maintenance ◽  
Operational Practices ◽  
Constant Observation ◽  
Short Time ◽  
Systematic Control

<p><strong>Abstract.</strong> Time effects and human offenses threaten cultural heritage. The constant observation and periodic maintenance activities are the most suitable safeguarding solution: they can limit risk situations and facilitate interventions. Today, planned conservation is thus the best pattern to preserve the monuments as focused on small preventive restoration: actions organized and structured according to steady and regular monitoring. The preliminary survey, the interpretation of metric and material data and the subsequent verification of the evolution of instability and degradation phenomena based on a comparison with previous information, is a long and expensive activity if carried out by traditional systems. Otherwise, 3D laser scanning and image-based reconstruction methodologies &amp;ndash; if properly applied within optimized operational practices &amp;ndash; can allow both the systematic control of assets’ conditions and the evaluation of their health status and decay problems in a short time and with lower costs. This paper intends to show the validity of such an innovative methodology through a case study applied to the former church and convent of <i>Sant'Agostino</i> (St. Augustine) in Bergamo.</p>

Integration of 3D Laser Scanning and Virtual Reconstructions as Research and Educational Tools for Representing the Past. The Case Study of Roman Baths of Edeta

2014 ◽  
pp. 131-142
Author(s):  
Vito Porcelli ◽  
Fernando Cotino Villa ◽  
Josep Blasco i Senabre ◽  
Vicent Escrivá Torres ◽  
Julian Esteban Chapapría
Keyword(s):  
Laser Scanning ◽  
3D Laser Scanning ◽  
Educational Tools ◽  
The Past ◽  
Roman Baths

3D Laser Triangulation and Deep Learning Approach to Tunnel Inspection

2021 ◽  
pp. 036119812110611
Author(s):  
Richard Fox-Ivey ◽  
Benoit Petitclerc ◽  
John Laurent
Keyword(s):  
Asset Management ◽  
Laser Scanning ◽  
Laser Triangulation ◽  
Learning Approach ◽  
3D Laser Scanning ◽  
Manual Task ◽  
Management Perspective ◽  
Inspection Process ◽  
Tunnel Inspection

Regular inspection of tunnel surfaces is an important practice from both a safety and tunnel asset management perspective. However, inspection for cracking and spalling is still predominantly a manual task, which is time consuming, subjective, and exposes on-foot staff to risk. This presentation will explore the use of 3D laser scanning technology and artificial intelligence to automate the inspection process with a Canadian metro case study being presented.

Operator Assessment of ILI Defects

2006 ◽  
Author(s):  
Kevin W. Ferguson
Keyword(s):  
High Resolution ◽  
Magnetic Flux ◽  
Effective Area ◽  
Magnetic Flux Leakage ◽  
Burst Pressure ◽  
Final Report ◽  
Allocation Of Resources ◽  
Flux Leakage

With the age of the original Panhandle Eastern Pipeline (PEPL) Company pipelines, it’s not a matter of if anomalies will be found when an ILI tool is run, it’s a matter of how many and how severe. When a final report is received from an ILI vendor, burst pressures are typically calculated using Modified B31G, 0.85dL. The results can seem unmanageable, but success has been had doing further assessments on some anomalies without excavating them all. This assessment has been developed and performed by PEPL on three sets of Tuboscope ILI data and one set of Baker Hughes CPIG data. The method to be discussed was first employed in 2002. It provides a more accurate characterization of the defect and provides the company the ability to more effectively allocate resources. Efforts have been made to review the color scan of a vendor’s raw High Resolution Magnetic Flux Leakage (HRMFL) data, and perform an assessment using Effective Area Analysis without excavating hundreds of anomalies that prove no threat to the pipeline. This assessment is done by hand on the computer and in many cases returns a burst pressure higher than that calculated using Modified B31G, 0.85dL. The following is a case study that shows how multiple defects have been assessed prior to excavation in an attempt to more accurately characterize the defect, and allow for a better allocation of resources. Digs have been performed to validate the process, and the results will be discussed.

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