scholarly journals Investigations of Model Multilayer Ceramic Casting Molds in a Raw State by Nondestructive Methods

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7761
Author(s):  
Krzysztof Żaba ◽  
Sandra Puchlerska ◽  
Marzanna Książek ◽  
Ryszard Sitek ◽  
Paweł Wiśniewski ◽  
...  
Keyword(s):  
3D Scanning ◽  
3D Scanner ◽  
Quick Method ◽  
Nondestructive Methods ◽  
Multilayer Ceramic ◽  
Thickness Measurements ◽  
Ceramic Casting ◽  
Aqueous Binder ◽  
Porosity Measurements

This article presents the results of research on the use of modern nondestructive methods such as 3D scanning, thermography and computed tomography (CT) to assess the quality of multilayer ceramic molds. Tests were performed on spherical samples of multilayer ceramic molds in the raw state. Samples were made of molding sands composed of quartz and molochite powders, the alcoholic binder hydrolyzed ethyl silicate (ZKE) and an aqueous binder based on colloidal silica. Thickness measurements of spherical forms were made using a 3D scanner. Porosity measurements were made using CT. Additionally, thermography observations of the mold cooling process were made with controlled temperature and humidity. The results of temperature measurements of samples were compared with measurements of thickness and porosity. The practical goal was to determine the possibility of using thermography, 3D scanning and CT as a quick method for detecting mold defects by varying their thickness, porosity and cracks and for final verification of the ceramic molds’ condition before casting.

scholarly journals Inspection of Materials by Laser Based 3D Scanning

2019 ◽  
Vol 9 (2S2) ◽  
pp. 577-579
Keyword(s):  
3D Scanning ◽  
Vital Role ◽  
Scanning System ◽  
Engineering Process ◽  
3D Scanner ◽  
Compact Size ◽  
The Cost ◽  
Production Industry ◽  
World Image

3D Scanning system plays a vital role in the field of engineering as well as for engineering purposes. The 3D Scanner is capable of capturing the real world image and converting it into digitalized form and sends the digitalized form of information to the computer for the further procedures. It aims at the reverse engineering process in a variety of industries like production industry to pertain the existing components for the inspection of quality components and for the simulation engineering to replica the nature from the authentic world. It may also leads to decrease in the manufacturing costs and also it creates much ease for the inspection of the materials. The application of 3D scanning is improved by reducing the cost of 3D scanning device. In this manuscript we dealt with the preparation or making of the 3D scanner system in a compact size with reduced cost in order to be effectively available to everyone and also to amplify the quality of the 3D scanning system.

scholarly journals Structured-light 3D scanning of exhibited historical clothing—a first-ever methodical trial and its results

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Jerzy Montusiewicz ◽  
Marek Miłosz ◽  
Jacek Kęsik ◽  
Kamil Żyła
Keyword(s):  
Cultural Heritage ◽  
Information Technologies ◽  
Structured Light ◽  
Three Dimensional ◽  
3D Models ◽  
3D Scanning ◽  
Dimensional Representation ◽  
3D Scanner ◽  
Three Dimensional Representation ◽  
3D Scanners

AbstractHistorical costumes are part of cultural heritage. Unlike architectural monuments, they are very fragile, which exacerbates the problems of their protection and popularisation. A big help in this can be the digitisation of their appearance, preferably using modern techniques of three-dimensional representation (3D). The article presents the results of the search for examples and methodologies of implementing 3D scanning of exhibited historical clothes as well as the attendant problems. From a review of scientific literature it turns out that so far practically no one in the world has made any methodical attempts at scanning historical clothes using structured-light 3D scanners (SLS) and developing an appropriate methodology. The vast majority of methods for creating 3D models of clothes used photogrammetry and 3D modelling software. Therefore, an innovative approach was proposed to the problem of creating 3D models of exhibited historical clothes through their digitalisation by means of a 3D scanner using structural light technology. A proposal for the methodology of this process and concrete examples of its implementation and results are presented. The problems related to the scanning of 3D historical clothes are also described, as well as a proposal how to solve them or minimise their impact. The implementation of the methodology is presented on the example of scanning elements of the Emir of Bukhara's costume (Uzbekistan) from the end of the nineteenth century, consisting of the gown, turban and shoes. Moreover, the way of using 3D models and information technologies to popularise cultural heritage in the space of digital resources is also discussed.

scholarly journals Application of High-Resolution 3D Scanning in Medical Volumetry

2016 ◽  
Vol 62 (1) ◽  
pp. 23-31 ◽  
Author(s):  
Adam Chromy
Keyword(s):  
High Resolution ◽  
Recovery Process ◽  
3D Scanning ◽  
Volumetric Method ◽  
New Method ◽  
Medical Applications ◽  
Practical Application ◽  
3D Scanner ◽  
Standard Methods ◽  
3D Scanners

Abstract This paper deals with application of 3D scanning technology in medicine. Important properties of 3D scanners are discussed with emphasize on medical applications. Construction of medical 3D scanner according to these specifications is described and practical application of its use in medical volumetry is presented. Besides volumetry, such 3D scanner is usable for many other purposes, like monitoring of recovery process, ergonomic splint manufacturing or inflammation detection. 3D scanning introduces novel volumetric method, which is compared with standard methods. The new method is more accurate compared to present ones. Principles of this method are discussed in paper and its accuracy is evaluated and experimentally verified.

Elimination of Clogging in PMMA Microchannels Using Water Assisted CO2 Laser Micromachining

2015 ◽  
Vol 799-800 ◽  
pp. 407-412 ◽  
Author(s):  
Mohamed O. Helmy ◽  
Ahmed M. Fath El-Bab ◽  
Hassan El-Hofy
Keyword(s):  
Thin Layer ◽  
Heat Affected Zone ◽  
Scanning Speed ◽  
Fluid Mixing ◽  
Mixing Efficiency ◽  
Water Cooling ◽  
Quick Method ◽  
Lab On Chip ◽  
On Chip

The accuracy and clogging of microchannels are important for assessing the quality of lab on chip (L-O-C) devices. The clogging affects the fluid mixing efficiency and influences the bonding of substrate. In this paper, inexpensive and quick method for microchannel fabrication in polymethyl methacrylate (PMMA) while reducing the thermal damage is introduced. Accordingly, the substrate was covered with a thin layer of water during CO2laser ablation. The effect of water cooling on the clogging formation, heat affected zone and the microchannel geometry in terms of depth and width is investigated. Clogging formation mechanism in the intersection of Y-channel is studied to improve its quality for microfluidics applications. During the experimental work, the CO2laser power was varied from 2.4 to 6 W at scanning speed from 5 to 12.5 mm/s. The results showed that covering the PMMA substrate with a thin layer of water prevented clogging formation and reduced the heat affected zone.

Nondestructive methods of inspecting the quality of heat and thermochemical treatment

1981 ◽  
Vol 23 (12) ◽  
pp. 831-833
Author(s):  
V. V. Belousov ◽  
A. P. Zhigun ◽  
S. A. Kolesov ◽  
A. V. Skoblo
Keyword(s):  
Thermochemical Treatment ◽  
Nondestructive Methods

scholarly journals Investigation in optimisation of accuracy with non-contact systems by influencing variable processes

2019 ◽  
Author(s):  
Ranveer S. Matharu ◽  
Wayne Sadler ◽  
Bekim V. Gashi ◽  
Trevor Toman
Keyword(s):  
3D Scanning ◽  
Ease Of Use ◽  
Shop Floor ◽  
Accurate Information ◽  
High Quality ◽  
Essential Tool ◽  
Scanning Systems

The use of 3D scanning systems is becoming increasingly popular and an essential tool for manufacturers for inspection and measurement. With such systems being utilised on the manufacturing shop floor due to their portability and ease of use, it is no doubt that such systems are designed to address a variety of users whom, with minimal training can operate the equipment. Due to continuing demands of high-quality products there is the need for manufacturers of 3D scanning systems to develop technologies that deliver fast and accurate information. However, one of the key challenges lies not in the training of people to use the equipment, but to develop engineers who can produce traceable, accurate and precise results with a declared statement of confidence quantifying the quality of the measurement. This statement of the quality of the output results relies on employing a set of workflow actions that involve planning, capture, processing and analysis, and finally output. This paper sets out to show how the results from a set of workflow actions from different categories of 3D scanning devices affects the quality of output.

scholarly journals Occupation Immersive

2021 ◽  
Author(s):  
Ryuki Han
Keyword(s):  
Virtual Reality ◽  
Research Methodology ◽  
Well Being ◽  
3D Scanning ◽  
Working Environment ◽  
Work Place ◽  
The Core ◽  
Spatial Quality

<p><b>In a working environment where employee poaching and regular staff turnovers are common, the culture of an office is at the core of company loyalty and organisationalsustainability. This being said, many companies still lack the knowledge andunderstanding of their own work place, resulting in a disconnected understanding of whatspatial qualities benefit employee well-being. This Thesis proposes an innovated and unprecedented methodology in which a deeper understanding between officeend user and work place are explored. Through the implementation of immersivevirtual technologies such as 3D scanning and virtual reality, a deeper understandingof the worker and workplace can be facilitated. Explored through literature, theabilities of immersive virtual technologies allow for the potential of an alternative spatialenvironment in which users inhabit space. This methodology, tested through a pilot and case study, concur the potential of extracting connections between users and space at both an emotional and technical level. As such, the resulting data informs the design proposals, creating solutions that are cultured by the emotional connections extracted between user and office, as well as the spatial qualities needed to promote wellbeing.</b></p> <p>The proposed research methodology fruitions the possibility to identify the intangible quality of office culture within existing work places, providing opportunities to improve the spatial quality and in turn enhance the well-being of the end users. Ultimately, providing ahigher and more tangible understanding between architect, client and workplace.</p>

scholarly journals Experimental study on reverse engineering in case of composite materials cut by water jet cutting

2018 ◽  
Vol 178 ◽  
pp. 03004 ◽  
Author(s):  
Ioan Alexandru Popan ◽  
Nicolae Balc ◽  
Alina Popan ◽  
Alexandru Carean
Keyword(s):  
Reverse Engineering ◽  
Water Jet ◽  
Abrasive Water Jet ◽  
3D Scanner ◽  
Advantages And Disadvantages ◽  
Complex Part ◽  
Water Jet Cutting ◽  
Abrasive Water Jet Cutting ◽  
Master Model

The main objective of the paper consists in remanufacturing of a part, through Abrasive Water Jet Cutting, using a method of reverse engineering based on 3D scanning. The characteristics of this process, the equipment and the main applications are presented. The research starts with manufacturing of a master model made by CFRP. This master model is a complex part cut by abrasive water jet cutting. In scanning process was used the 3D Scanner Artec Space Spider and the point cloud was processed using Artec Studio 11 software. By using this new 3D model was manufactured a new part, with the same setup. The quality characteristics (accuracy and surface quality) of this part was compared with the master model. The paper presents the advantages and disadvantages of this reverse engineering method applied on abrasive water jet cutting process.

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