DEVELOPMENT AND EVALUATION OF A CAD/3DP PROCESS FOR TRANSTIBIAL SOCKET FABRICATION

2015 ◽  
Vol 27 (05) ◽  
pp. 1550044 ◽  
Author(s):  
Ming-Ji Tzeng ◽  
Lai-Hsing Hsu ◽  
Shih-Hsin Chang
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
Time Frame ◽  
Design System ◽  
Process Time ◽  
Three Dimensional Printing ◽  
Entry Level ◽  
Prosthetic Socket ◽  
Aided Design ◽  
Transtibial Amputees

This paper describes a multidisciplinary project that applied the concept of reverse engineering using computer-aided design (CAD) tools to develop a three-dimensional printing (3DP)-based prosthetic socket for transtibial amputees by combining the concepts of patellar tendon-bearing (PTB) socket design principle and total surface-bearing (TSB) socket casting method. Using contemporary tools such as a handheld 3D scanner and an entry-level 3DP machine, together with an in-house prosthetic socket design system and a stump forming device, allowed us to fabricate prosthetic sockets with a consistent quality, and to shorten the learning process time-frame to fabricate them. The results of a case study of two participants demonstrated that the proposed CAD/3DP process of fabrication of transtibial sockets can be easily applied by an unskilled prosthetist to fabricate a socket with the required quality at the first fitting.

scholarly journals Development of integrated intelligent computer-aided design system for mechanical power-transmitting mechanism design

2017 ◽  
Vol 9 (7) ◽  
pp. 168781401771038 ◽  
Author(s):  
Isad Saric ◽  
Adil Muminovic ◽  
Mirsad Colic ◽  
Senad Rahimic
Keyword(s):  
Rapid Prototyping ◽  
Computer Aided Design ◽  
Three Dimensional ◽  
Computer Numerical Control ◽  
Numerical Control ◽  
Mechanical Power ◽  
Design System ◽  
Computer Aided ◽  
Aided Design ◽  
Intelligent Computer

This article presents architecture of integrated intelligent computer-aided design system for designing mechanical power-transmitting mechanisms (IICADkmps). The system has been developed in C# program environment with the aim of automatising the design process. This article presents a modern, automated approach to design. Developed kmps modules for calculation of geometrical and design characteristics of mechanical power-transmitting mechanisms are described. Three-dimensional geometrical parameter modelling of mechanical power-transmitting mechanisms was performed in the computer-aided design/computer-aided manufacturing/computer-aided engineering system CATIA V5. The connection between kmps calculation modules and CATIA V5 modelling system was established through initial three-dimensional models – templates. The outputs from the developed IICADkmps system generated final three-dimensional virtual models of mechanical power-transmitting mechanisms. Testing of the developed IICADkmps system was performed on friction, belt, cogged (spur and bevel gears) and chain transmitting mechanisms. Also, connection of the developed IICADkmps system with a device for rapid prototyping and computer numerical control machines was made for the purpose of additional testing and verification of practical use. Physical prototypes of designed characteristic elements of mechanical power-transmitting mechanisms were manufactured. The selected test three-dimensional virtual prototypes, obtained as an output from the developed IICADkmps system, were manufactured on the device for rapid prototyping (three-dimensional colour printer Spectrum Z510) and computer numerical control machines. Finally, at the end of the article, conclusions and suggested possible directions of further research, based on theoretical and practical research results, are presented.

Computer-aided design and three-dimensional printing improves symmetry in heminasal reconstruction outcomes

2019 ◽  
Vol 72 (7) ◽  
pp. 1198-1206 ◽  
Author(s):  
Cheng-I Yen ◽  
Jonathan A. Zelken ◽  
Chun-Shin Chang ◽  
Lun-Jou Lo ◽  
Jui-Yung Yang ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
Three Dimensional Printing ◽  
Computer Aided ◽  
Aided Design ◽  
Dimensional Printing

Computer-aided design and three-dimensional printing in the manufacturing of an ocular prosthesis

2016 ◽  
Vol 100 (7) ◽  
pp. 879-881 ◽  
Author(s):  
Sébastien Ruiters ◽  
Yi Sun ◽  
Stéphan de Jong ◽  
Constantinus Politis ◽  
Ilse Mombaerts
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
Three Dimensional Printing ◽  
Ocular Prosthesis ◽  
Computer Aided ◽  
Aided Design ◽  
Dimensional Printing

scholarly journals Development of Ceramic Three-Dimensional Design System Based on Sketch

2013 ◽  
Vol 7 (1) ◽  
pp. 116-120 ◽  
Author(s):  
Li Busheng ◽  
Hu Jingfang
Keyword(s):  
Design Process ◽  
Computer Aided Design ◽  
Three Dimensional ◽  
Ceramic Technology ◽  
Design System ◽  
Technology Application ◽  
Depth Analysis ◽  
Product Design Process ◽  
Ceramic Design ◽  
Aided Design

The paper has analyzed and digested the related literatures from home and aboard, summarized techniques and theoretical methods of the relevant prototype systems. Based on the understanding of the present situation of the domestic and foreign sketches technology application basis, through the existing ceramics product design process and production process flow of the detailed ceramic products of design process are in-depth analysis and decomposition is proposed based on the sketch of the computer aided design ceramic technology, and on the basis of the development of the corresponding ceramic design software.

scholarly journals Three-dimensional printing of a patient-specific engineered nasal cartilage for augmentative rhinoplasty

2019 ◽  
Vol 10 ◽  
pp. 204173141882479 ◽  
Author(s):  
Hee-Gyeong Yi ◽  
Yeong-Jin Choi ◽  
Jin Woo Jung ◽  
Jinah Jang ◽  
Tae-Ha Song ◽  
...  
Keyword(s):  
Stem Cells ◽  
Computer Aided Design ◽  
Three Dimensional ◽  
Patient Specific ◽  
Adipose Derived Stem Cells ◽  
Three Dimensional Printing ◽  
Nasal Cartilage ◽  
Computer Aided ◽  
Aided Design ◽  
Dimensional Printing

Autologous cartilages or synthetic nasal implants have been utilized in augmentative rhinoplasty to reconstruct the nasal shape for therapeutic and cosmetic purposes. Autologous cartilage is considered to be an ideal graft, but has drawbacks, such as limited cartilage source, requirements of additional surgery for obtaining autologous cartilage, and donor site morbidity. In contrast, synthetic nasal implants are abundantly available but have low biocompatibility than the autologous cartilages. Moreover, the currently used nasal cartilage grafts involve additional reshaping processes, by meticulous manual carving during surgery to fit the diverse nose shape of each patient. The final shapes of the manually tailored implants are highly dependent on the surgeons’ proficiency and often result in patient dissatisfaction and even undesired separation of the implant. This study describes a new process of rhinoplasty, which integrates three-dimensional printing and tissue engineering approaches. We established a serial procedure based on computer-aided design to generate a three-dimensional model of customized nasal implant, and the model was fabricated through three-dimensional printing. An engineered nasal cartilage implant was generated by injecting cartilage-derived hydrogel containing human adipose-derived stem cells into the implant containing the octahedral interior architecture. We observed remarkable expression levels of chondrogenic markers from the human adipose-derived stem cells grown in the engineered nasal cartilage with the cartilage-derived hydrogel. In addition, the engineered nasal cartilage, which was implanted into mouse subcutaneous region, exhibited maintenance of the exquisite shape and structure, and striking formation of the cartilaginous tissues for 12 weeks. We expect that the developed process, which combines computer-aided design, three-dimensional printing, and tissue-derived hydrogel, would be beneficial in generating implants of other types of tissue.

Design of Longitudinal Beam Layout on a Curved Shell Based on the Production-Oriented Design Concept

1994 ◽  
Vol 10 (04) ◽  
pp. 217-222
Author(s):  
Kohji Honda ◽  
Noriyuki Tabushi
Keyword(s):  
Crude Oil ◽  
Computer Aided Design ◽  
Design Method ◽  
Three Dimensional ◽  
Design System ◽  
Two Dimensional ◽  
Skilled Workers ◽  
System A ◽  
Computer Aided ◽  
Aided Design

A VLCC (very large crude oil carrier) has approximately 1000 curved longitudinal beams, many of which have three-dimensional complicated curvatures. Due to the shortage of highly skilled workers and the need to keep costs down, production and structural designers have worked to reduce the number of such beams. In order to meet the requirements of production, the authors' company has attempted several design approaches for the longitudinal beam layout to reduce the number of beams that have complicated curvature. Recently, through the application of a computer-aided design system, which has been improved for shipbuilding based on the Calma's system, a new design method for the longitudinal beam layout has been successfully developed. A significant number of beams with a twisted configuration have been eliminated and replaced with beams of simpler, two-dimensional shapes. This paper shows the transition of these design approaches, and the application of the new design to building a VLCC.

DEVELOPMENT IN CAD OF A THREE-DIMENSIONAL MODEL OF A FOREST PLANTING MACHINES

2021 ◽  
Author(s):  
M.V. Drapalyuk ◽  
◽  
L.D. Bukhtoyarov ◽  
N.Yu. Yurev ◽  
◽  
...  
Keyword(s):  
Energy Consumption ◽  
Root System ◽  
Computer Aided Design ◽  
Three Dimensional ◽  
Maximum Efficiency ◽  
Design System ◽  
Three Dimensional Model ◽  
The Moment ◽  
Aided Design

Currently, the reforestation process has a number of disadvantages, such as the need to use manual labor during the distribution and planting of seedlings; mechanisms for planting seedlings are often equipped with tractors as traction means. The creation of furrows and the preparation of the soil immediately before planting affects the energy consumption of the implements’ drives. At the moment, the inefficiency of planting work is high, since the planting of seedlings with a closed root system occurs in conjunction with a plow. All these factors, when calculated for a long-term period, lead to greater energy consumption when carrying out this type of work. This article discusses approaches to the mechanization of the planting process. Using the experience of planting seedlings with a closed root system (CCS) manually and analyzing the methods of mechanization of planting, it is possible to obtain maximum efficiency when carrying out this type of work. Based on the material studied, a prototype of a planting device suitable for the technology of discrete planting of seedlings with ZKS was selected. Solid modeling of the working body in the Solidworks computer-aided design system has been carried out. When designing the model, the possibility of its production using additive technology using the FDM printing method was envisaged.

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