scholarly journals Results of the pilot phase of a clinical evaluation of computer aided design of trans-tibial prosthesis sockets

1986 ◽  
Vol 10 (3) ◽  
pp. 142-148 ◽  
Author(s):  
J. M. Holden ◽  
G. R. Fernie
Keyword(s):  
Clinical Trials ◽  
Clinical Evaluation ◽  
Computer Aided Design ◽  
Pilot Phase ◽  
Computer Aided ◽  
The Subject ◽  
Conventional Methods ◽  
Aided Design

This study served as a pilot to develop the methodology for a larger number of clinical trials. Ten trans-tibial amputees compared sockets made by conventional methods with sockets made using computer aided socket design (CASD). Prosthetists, paired for experience, fitted each subject with one prosthesis using each method. A preferred socket was selected by the subject on the basis of comfort without knowledge of the method by which the socket was designed. Prosthetists also evaluated the sockets. Three subjects preferred sockets built using CASD and one subject preferred the conventional socket only slightly more than the CASD socket. Six subjects clearly preferred the conventional fitting.

Computer-Aided Design as Carrier of Set Development Changes System in E-Course Engineering

2016 ◽  
pp. 500-515
Author(s):  
Irina Sidorkina ◽  
Aleksey Rуbakov
Keyword(s):  
Computer Aided Design ◽  
State University ◽  
Stage Of Development ◽  
University Of Technology ◽  
Computer Aided ◽  
E Learning ◽  
Training Courses ◽  
The Subject ◽  
Aided Design ◽  
Current Stage

The current stage of development of learning management systems is associated with use of opportunities provided by global computer networks and technological standards developed in distance education. It offers structuring of educational material in electronic course and approach to navigation modeling, which are consistent with international specifications of e-learning SCORM and IMS, adding to them specific adaptive algorithms for navigating through training courses based on use of the model of integral evaluation of student's knowledge. In this chapter professor Irina Sidorkina (Volga State University of Technology) and professor Vardan Mkrttchian (HHH University) using the results previously obtained for the implementation of Computer - Aided Design as Carrier of Set Development Changes System in E-Course Engineering. Dr. Alexey Rybakov (Omega-R Inc.) was a designing a software on the subject of this chapter.

scholarly journals The computer-aided design and rapid prototyping fabrication of removable partial denture frameworks

2005 ◽  
Vol 219 (3) ◽  
pp. 195-202 ◽  
Author(s):  
D Eggbeer ◽  
R Bibb ◽  
R Williams
Keyword(s):  
Rapid Prototyping ◽  
Computer Aided Design ◽  
Removable Partial Denture ◽  
Partial Denture ◽  
Software Analysis ◽  
Computer Aided ◽  
Cad Cam ◽  
Conventional Methods ◽  
Aided Design ◽  
Dental Cast

This study explores the application of computer-aided design and manufacture (CAD/CAM) to the process of electronically surveying a scanned dental cast as a prior stage to producing a sacrificial pattern for a removable partial denture (RPD) metal alloy framework. These are designed to retain artificial replacement teeth in the oral cavity. A cast produced from an impression of a patient's mouth was digitally scanned and the data converted to a three-dimensional computer file that could be read by the computer-aided design (CAD) software. Analysis and preparation were carried out in the digital environment according to established dental principles. The CAD software was then used to design the framework and generate a standard triangulation language (STL) file in preparation for its manufacture using rapid prototyping (RP) methods. Several RP methods were subsequently used to produce sacrificial patterns, which were then cast in a chromium-cobalt alloy using conventional methods and assessed for accuracy of fit. This work demonstrates that CAD/CAM techniques can be used for electronic dental cast analysis, preparation, and design of RPD frameworks. It also demonstrates that RP-produced patterns may be successfully cast using conventional methods and that the resulting frameworks can provide a satisfactory fit.

scholarly journals DESIGN BY MATERIAL: FROM MATERIAL TO FORM THROUGH CAD MODELLING

2021 ◽  
Vol 1 ◽  
pp. 963-972
Author(s):  
Egon Ostrosi ◽  
Jean-Bernard Bluntzer ◽  
Hugues Baume ◽  
Josip Stjepandić
Keyword(s):  
Design Process ◽  
Computer Aided Design ◽  
Formal Model ◽  
Knowledge Gap ◽  
Systematic Method ◽  
Computer Aided ◽  
Cad Modelling ◽  
The Subject ◽  
Design Perspective ◽  
Aided Design

AbstractFor Aristotelian scholars, matter is identified as the subject of change, while form is the boundary of matter. Design is a process of bringing about change. From a design perspective, material is what an entity is made from; form is what makes a thing what it is. Based on the principle, “form is the boundary of matter”, this paper proposes a Design by Material method, thereby addressing the knowledge gap of a systematic method for designing according to material. This method is predicated on the material specification as the first input in the design process. A formal model is built in which the material acts as a trigger and driver for the design process. The method is implemented by integrating computer-aided design (CAD) modelling and its design form. A design application is explained to demonstrate the relevance of the Design by Material method.

scholarly journals Computer-aided design of resonance-free vibration systems

2018 ◽  
Vol 224 ◽  
pp. 04028
Author(s):  
Nikolai Muliukhin ◽  
Dmitriy Lobanov ◽  
Vladimir Grigoriev ◽  
Viktor Gartfelder
Keyword(s):  
Free Vibration ◽  
Computer Aided Design ◽  
Software Systems ◽  
Ansys Software ◽  
Computer Aided ◽  
Technical Specifications ◽  
The Subject ◽  
Aided Design ◽  
Insight Into

The article provides insight into application of vibration systems in different industries. Disadvantages of conventional devices and advantages of resonance-free vibration systems are revealed. Issues of simulating resonance-free vibration systems, determination of main parameters and technical specifications of operating elements on the example of piling vibrators are discussed. The article dwells upon issues of computer-aided design of vibration systems, power, strength and kinematic calculations of main structure elements in NX, Euler, Ansys software systems. The provided algorithm enables reducing labor intensity of designing resonance-free vibration systems, reducing product cost and increasing the design engineer’s performance. Prospects of further research on the subject matter are outlined.

scholarly journals Comparative Numerical Analysis Of Advertising Board Tower Using Adina And Autodesk Robot Structural Analysis

2015 ◽  
Vol 15 (2) ◽  
Author(s):  
Maciej Major ◽  
Krzysztof Kuliński
Keyword(s):  
Numerical Analysis ◽  
Structural Analysis ◽  
Static Analysis ◽  
Computer Aided Design ◽  
Displacement Analysis ◽  
Design Program ◽  
Computer Aided ◽  
The Subject ◽  
Aided Design

Abstract In this paper the subject of comparative stress and displacement analysis for different computer aided design program environments is discussed. For the purposes of analysis ADINA and Autodesk ROBOT program were used. In both programs an advertising board tower was modeled. Static analysis was adopted for the computations. Obtained results allowed showing small differences and limitations between those two environments.

Computer-Aided Design of Human Knee Implant

2014 ◽  
Vol 613 ◽  
pp. 172-181 ◽  
Author(s):  
Jarosław Zubrzycki ◽  
Natalia Smidova
Keyword(s):  
Finite Element Method ◽  
Clinical Trials ◽  
Computer Aided Design ◽  
3D Model ◽  
Ct Scans ◽  
Polyethylene Insert ◽  
Human Knee ◽  
Computer Aided ◽  
Numerical Finite Element ◽  
Aided Design

This paper presents the design process of human knee implant. The design has been used CT scans from the actual clinical trials. To make a 3D model from CT images Materialise Mimics software was used. On the basis of the resulting model, further work was carried out to obtain a STL model is necessary to carry out research numerical finite element method. This paper presents the results of numerical only one element of which is the medical polyethylene insert, which will act as a prosthetic meniscus.

scholarly journals Ontological approach to the formation of subject-oriented knowledge bases in the field of computer-aided design

2019 ◽  
Vol 298 ◽  
pp. 00065
Author(s):  
Andrey Cherepashkov ◽  
Anastasia Sharaukhova
Keyword(s):  
Computer Aided Design ◽  
Knowledge Bases ◽  
Subject Area ◽  
Cad Systems ◽  
Ontological Approach ◽  
Computer Aided ◽  
Design Activities ◽  
Design Systems ◽  
The Subject ◽  
Aided Design

The problem of the formation of subject-oriented knowledge bases in the subject area of operation of computer-aided design systems is discussed. One of the trends in the development of CAD systems is their intellectualization through the development of a system-wide environment, including the means of methodological support of the design activities of users. It is proposed to use the otological approach in identifying and updating the content of knowledge bases used by target CAD personnel. The results of an experiment on the development of a targeted taxonomy in the subject area of computer-aided design of engineering products are presented.

scholarly journals An evaluation of computer aided design of below-knee prosthetic sockets

1990 ◽  
Vol 14 (3) ◽  
pp. 136-142 ◽  
Author(s):  
A. K. Topper ◽  
G. R. Fernie
Keyword(s):  
Computer Aided Design ◽  
Cost Effective ◽  
Design Methods ◽  
Research And Teaching ◽  
Computer Aided ◽  
Conventional Methods ◽  
Aided Design

Forty-eight below-knee amputees compared sockets designed using CANFIT computer aided design (CAD) software with sockets designed using conventional methods. Each subject was fitted by one prosthetist who used conventional techniques and one who used the CANFIT system to design the socket. Prosthetists alternated design methods for each new subject. The prosthetist using the conventional techniques was allowed up to 2 design attempts and the prosthetist using the CANFIT system was allowed up to 5 design attempts. After 2 design attempts with each method 21% of the subjects preferred the CANFIT design socket. Following up to 5 attempts 54% preferred the CANFIT designed socket. A jury of experts made an assessment of the CANFIT system and of CAD in prosthetics. The jury did not think that the version of the system tested was cost effective but that at the rate that it was improving it would become such within 3 to 5 years. The jury noted that, as well as monetary benefits, CAD presents the possibility of benefits in other areas such as research and teaching. A number of specific suggestions regarding the use and development of CAD in prosthetics were also made.

scholarly journals The ontological basis for teaching CAD staff

2021 ◽  
Vol 11 (1) ◽  
pp. 51-63
Author(s):  
A.A. Cherepashkov ◽  
◽  
A.G. Sharaukhova
Keyword(s):  
Computer Aided Design ◽  
Subject Area ◽  
Specific System ◽  
Ontological Approach ◽  
Special Software ◽  
Computer Aided ◽  
The Subject ◽  
Ontological Analysis ◽  
The Individual ◽  
Aided Design

The urgency and significance of the application of the ontological approach in teaching computer-aided design is sub-stantiated. Training and retraining of personnel is one of the important stages in the implementation of automated sys-tems for industrial purposes, and methodological support tools are necessarily present in the portfolio of all leading manufacturers of computer-aided design systems (CAD). Principles and approaches to the formation of the ontological base of the subject area of teaching computer-aided design are proposed. To highlight the structure of educational ontology, it is proposed to use the concepts of aspects of mechanical engineering design. The hierarchy of levels of training for CAD users is determined. At the operator level, training comes down to mastering a limited set of terms and concepts implemented in specific system solutions. At the technician level, it is required to master a wider set of stand-ard design procedures typical for a whole class of basic CAD technologies. At the engineering levels, the user acquires the knowledge necessary to master the technologies and CAD tools in the complex of all stages of technical prepara-tion of production. The article describes the method of ontological analysis of the studied subject area, which ensures the formation of target trajectories for training and retraining specialists, providing for a number of sequential stages in the formation of an ontological base. The article describes the method of ontological analysis of the subject area of education, which ensures the formation of target trajectories of training and retraining of specialists and provides for a number of successive stages of the formation of an ontological base. To optimize the individual trajectories of training CAD specialists, special software has been developed, integrated with the Protégé ontological editor.

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