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 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 Fairness of Task Allocation in Crowdsourcing Workflows

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Donglai Fu ◽  
Yanhua Liu
Keyword(s):  
Task Allocation ◽  
Vital Role ◽  
Current Status ◽  
Two Phase ◽  
Allocation Model ◽  
Workflow Execution ◽  
Heuristic Strategies ◽  
Important Challenge ◽  
The Cost

Fairness plays a vital role in crowd computing by attracting its workers. The power of crowd computing stems from a large number of workers potentially available to provide high quality of service and reduce costs. An important challenge in the crowdsourcing market today is the task allocation of crowdsourcing workflows. Requester-centric task allocation algorithms aim to maximize the completion quality of the entire workflow and minimize its total cost, which are discriminatory for workers. The crowdsourcing workflow needs to balance two objectives, namely, fairness and cost. In this study, we propose an alternative greedy approach with four heuristic strategies to address such an issue. In particular, the proposed approach aims to monitor the current status of workflow execution and use heuristic strategies to adjust the parameters of task allocation. We design a two-phase allocation model to accurately match the tasks with workers. The F-Aware allocates each task to the worker that maximizes the fairness and minimizes the cost. We conduct extensive experiments to quantitatively evaluate the proposed algorithms in terms of running time, fairness, and cost by using a customer objective function on the WorkflowSim, a well-known cloud simulation tool. Experimental results based on real-world workflows show that the F-Aware, which is 1% better than the best competitor algorithm, outperforms other optimal solutions in finding the tradeoff between fairness and cost.

scholarly journals DIGITAL VOLUME SCANNING SYSTEM FOR IMPROVING THE QUALITY OF GARDEN RETRACTION

2019 ◽  
Vol 85 (4) ◽  
pp. 96-99
Author(s):  
S.S. Terekhov ◽  
N.S. Khrol
Keyword(s):  
Clinical Case ◽  
3D Model ◽  
3D Scanning ◽  
Scanning System ◽  
Cad System ◽  
Cad Cam ◽  
Plaster Models

Digital 3D scanning technology of the CAD / CAM system was used to increase the accuracy of the stump depth of the examined teeth. Collapsible plaster models were made for each clinical case and scanned in the CAD system - digital volume scanner. Using this technology on a 3D model to determine the exact depth of preparation of the stump. It was found that the study by digital volume scanning to determine and verify the depth of preparation of the examined teeth by orthopaedists, allows a more accurate and careful approach to the rationality of retraction for fixed orthopaedic structures.

scholarly journals Design of Portable Exoskeleton Forearm for Rehabilitation of Monoparesis Patients Using Tendon Flexion Sensing Mechanism for Health Care Applications

Electronics ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1279
Author(s):  
Muhammad Saad bin Imtiaz ◽  
Channa Babar Ali ◽  
Zareena Kausar ◽  
Syed Yaseen Shah ◽  
Syed Aziz Shah ◽  
...  
Keyword(s):  
Functional Independence ◽  
Vital Role ◽  
Upper Extremities ◽  
Servo Motor ◽  
3D Scanner ◽  
Treatment Interventions ◽  
Health Care Applications ◽  
Flex Sensors ◽  
Tracking Technology

Technology plays a vital role in patient rehabilitation, improving the quality of life of an individual. The increase in functional independence of disabled individuals requires adaptive and commercially available solutions. The use of sensor-based technology helps patients and therapeutic practices beyond traditional therapy. Adapting skeletal tracking technology could automate exercise tracking, records, and feedback for patient motivation and clinical treatment interventions and planning. In this paper, an exoskeleton was designed and subsequently developed for patients who are suffering from monoparesis in the upper extremities. The exoskeleton was developed according to the dimensions of a patient using a 3D scanner, and then fabricated with a 3D printer; the mechanism for the movement of the hand is a tendon flexion mechanism with servo motor actuators controlled by an ATMega2560 microcontroller. The exoskeleton was used for force augmentation of the patient’s hand by taking the input from the hand via flex sensors, and assisted the patient in closing, opening, grasping, and picking up objects, and it was also able to perform certain exercises for the rehabilitation of the patient. The exoskeleton is portable, reliable, durable, intuitive, and easy to install and use at any time.

A Study on Influence of Shape of Aggregate on Strength and Quality of Concrete for Buildings and Pavements

2014 ◽  
Vol 941-944 ◽  
pp. 776-779 ◽  
Author(s):  
Kumar Molugaram ◽  
Jaya S. Shanker ◽  
Adepu Ramesh
Keyword(s):  
Flexural Strength ◽  
Vital Role ◽  
Hardened Concrete ◽  
Cement Concrete ◽  
Strength Tests ◽  
Hardened State ◽  
Different Shapes ◽  
And Performance ◽  
The Cost

Aggregate characteristics of shape, texture and grading influence on workability, finishability, bleeding, pumpability and segregation of fresh concrete and affects the strength, shrinkage, density, and durability of hardened concrete. About 80% of total volume of concrete consists of aggregate. Construction and durability problems have been reported due to poor mixture proportioning and variation on grading. Aggregate characteristics significantly affect the performance of Quality Concrete (QC) both in fresh and hardened state and have an impact on the cost effectiveness. Flaky and elongated particles lead to higher voids than cubical, rounded and well graded particles. The shape factor of aggregate plays a vital role in the design and performance of QC mix and it is mainly depends on the rock formation and type of crusher being used for crushing the aggregates. Flaky and elongated particles have larger specific surface area which results in higher demand of cement paste in cement concrete mix. These particles impede compaction or break during rolling and decrease the strength of the concrete structures. An attempt is made to study the effect of shape of aggregate on quality of the concrete used for the buildings and pavements. Initially an aggregate samples were collected from the stone crusher (two types) and prepared with different proportions of Flakiness and Elongation indices to conduct tests on properties of aggregates and compressive strength and flexural strength tests on concrete. The effect of different percentages from 0 to 50% of combined Flaky and Elongation Aggregates (CFEA) for quality concrete on the compressive and flexural strength of cement concrete is studied. The other properties of aggregate such as bulk density, impact value, water absorption have been studied for different shapes of aggregates. The cost analysis has been carried out with an optimum value of 30% CFEA in 1:3 proportions of flaky and elongated particles.

Active Catalogs: Integrated Support for Component Engineering

1998 ◽  
Author(s):  
Murilo Coutinho ◽  
Ragy Eleish ◽  
Jihie Kim ◽  
Vished Kumar ◽  
S. Ringo Ling ◽  
...  
Keyword(s):  
Simulation Models ◽  
Engineering Process ◽  
National Academy Of Sciences ◽  
Purchase Cost ◽  
Design And Manufacturing ◽  
The Cost ◽  
Academy Of Sciences ◽  
Intended Use ◽  
Component Engineering

Abstract A recent National Academy of Sciences study shows that design and manufacturing is dominated by three “eighty percent” rules. Eighty percent of the cost of a product typically is the purchase cost of its components. Eighty percent of the manufacturing costs are determined in the first twenty percent of the design phase. And eighty percent of an engineer’s time is spent not on design, but on communications: obtaining information about components comprising the design and coordinating with other engineers about design issues. Thus, the speed and quality of product development is heavily dependent on a designer’s ability to perform component engineering — to configure a set of components that work well together with respect to performance, reliability, cost and delivery schedule. This paper describes services provided in the Active Catalogs system that support the component engineering process. These services enable a designer not only to find candidate parts to serve as individual components in a design, but to explore and assess interactions between candidate parts for sets of components. These services include mechanisms for: (1) creating queries for parts based on their intended use rather than merely parametric specifications; (2) refining those queries to take account of constraints imposed by other components; (3) providing multi-modal information to help designers assess and compare candidate parts; and (4) generating simulation models of candidate parts and integrating them to provide simulation models of candidate systems.

Perancangan dan Pembuatan Alat Bantu Meja Putar untuk Mesin Cnc 4 Axis

2016 ◽  
Vol 10 (2) ◽  
pp. 162-171
Author(s):  
Hafid Hafid ◽  
Tatang Sutisna
Keyword(s):  
Processing Time ◽  
Rotary Table ◽  
Engineering Process ◽  
Cnc Machine ◽  
Economical Analysis ◽  
Machining Center ◽  
Design And Manufacturing ◽  
The Cost ◽  
Productivity And Competitiveness

The design and manufacturing of the rotary table with the specification Ø 170 mm (6 inches) for CNC machine 4 axis has been done. The objective of manufacturing a rotary table is to increase the efficiency of CNC machine Hardford 4 axis to be above 80% in line machining center CV. IM’s workshop. The engineering methods was taken, consist of: working preparation, manufacturing of working drawing, engineering process, the manufacturing and testing. The prototype has been tested and operated, the resulting of increasing productivity of which were as follows: the process of assembling was increased to be 3 time ( before 1 time) and processing time for a specific case reduced from 5 hours to 3 hours, number of operators for the case of assembling the rotary reduced to 1 person (before 4 persons), safety and security become to be better. The results show increased efficiency of CNC machine Hardford, from under 50% to be above 80%. Based on the economical analysis obtained by the cost of good sold (C.G.S) of the rotary table is IDR 34.060.000. The results presented in this paper is expected to be case study for developing a business of the metal and engineering SMEs domestic to the effort of improving efficiency, quality, productivity and competitiveness in global market.ABSTRAKPerancangan dan pembuatan alat bantu meja putar (rotary table) dengan spesifikasi teknis Ø 170 mm (6 inci) untuk mesin CNC 4 axis telah dilakukan. Tujuan pembuatan rotary table adalah untuk meningkatkan efisiensi mesin CNC Hardford 4 axis di atas 80% pada line machining center Bengkel CV. IM. Metode rancang bangun yang dilakukan, meliputi: persiapan kerja, pembuatan gambar kerja, proses engineering, pembuatan dan uji coba. Prototip tersebut telah diuji coba dan dioperasikan dengan hasil peningkatan produktivitas sebagai berikut: proses pengerjaan bongkar pasang meningkat menjadi 3 kali (sebelumnya 1 kali) dan waktu pengerjaan untuk kasus tertentu berkurang dari 5 jam menjadi 3 jam, jumlah operator untuk kasus bongkar pasang rotary berkurang menjadi 1 orang (sebelumnya 4 orang), keselamatan kerja dan keamanan menjadi lebih baik. Hasil peningkatan berupa efisiensi mesin CNC Hardford 4 axis dari sebelumnya di bawah 50% menjadi di atas 80%. Berdasarkan hasil perhitungan analisis ekonomi diperoleh harga pokok produksi (HPP) alat bantu meja putar adalah sebesar Rp. 34.060.000. Bahasan ini diharapkan menjadi contoh kasus bagi pengembangan usaha IKM logam dan mesin dalam negeri untuk meningkatkan efisiensi, mutu, produktivitas dan keunggulan daya saing di pasar global.Kata kunci: alat bantu meja putar, mesin CNC, harga pokok produksi

Pengaruh Kompetensi Coder terhadap Keakuratan dan Ketepatan Pengkodean Menggunakan ICD 10 di Rumah Sakit X Pekanbaru Tahun 2016

2018 ◽  
Vol 1 (1) ◽  
pp. 31-43
Author(s):  
Nur Maimun ◽  
Jihan Natassa ◽  
Wen Via Trisna ◽  
Yeye Supriatin
Keyword(s):  
Medical Record ◽  
Human Error ◽  
Medical Personnel ◽  
Quality Of Data ◽  
Accuracy And Precision ◽  
Result Show ◽  
Study Implementation ◽  
Icd 10 ◽  
The Cost

The accuracy in administering the diagnosis code was the important matter for medical recorder, quality of data was the most important thing for health information management of medical recorder. This study aims to know the coder competency for accuracy and precision of using ICD 10 at X Hospital in Pekanbaru. This study was a qualitative method with case study implementation from five informan. The result show that medical personnel (doctor) have never received a training about coding, doctors writing that hard and difficult to read, failure for making diagnoses code or procedures, doctor used an usual abbreviations that are not standard, theres still an officer who are not understand about the nomenclature and mastering anatomy phatology, facilities and infrastructure were supported for accuracy and precision of the existing code. The errors of coding always happen because there is a human error. The accuracy and precision in coding very influence against the cost of INA CBGs, medical and the committee did most of the work in the case of severity level III, while medical record had a role in monitoring or evaluation of coding implementation. If there are resumes that is not clearly case mix team check file needed medical record the result the diagnoses or coding for conformity. Keywords: coder competency, accuracy and precision of coding, ICD 10

ABOUT NECESSITY OF MATHEMATICAL MODELING OF THE BUSINESS PROCESS OF COST ESTIMATE CALCULATIONS IN THE CONSTRUCTION OF OIL AND GAS FACILITIES

2017 ◽  
pp. 139-145
Author(s):  
R. I. Hamidullin ◽  
L. B. Senkevich
Keyword(s):  
Mathematical Modeling ◽  
Quality Assessment ◽  
Business Process ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Gas Industry ◽  
Construction Organizations ◽  
The Cost ◽  
Cost Of Construction

A study of the quality of the development of estimate documentation on the cost of construction at all stages of the implementation of large projects in the oil and gas industry is conducted. The main problems that arise in construction organizations are indicated. The analysis of the choice of the perfect methodology of mathematical modeling of the investigated business process for improving the activity of budget calculations, conducting quality assessment of estimates and criteria for automation of design estimates is performed.

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