The main idea behind this paper is to highlight efforts made to improve the application potential of the fused deposition modelling (FDM) process by producing the rapid prototyping parts at minimum cost. Build orientation analysis for prismatic, curved boundary, and complex-shaped parts is carried out. The mathematical model is formulated to estimate the total cost of part preparation in FDM. Optimal part build orientation and the values of parameters resulting in the minimum total cost of parts preparation are identified. The parts produced by the FDM rapid prototyping process are considered for build orientation analysis. The concept can be extended for parts produced with any layered manufacturing process. This is the first attempt to deal with diversified types of part geometries and formulate a universal cost model applicable for all types of parts to determine minimum cost in FDM.
Purpose -The purpose of this paper was to find a successful treatment modality for patients suffering from temporomandibular joint (TMJ) ankylosis who could not be treated through traditional surgeries. Design/methodology/approach -This work integrated the unique capabilities of the imaging technique, the rapid prototyping (RP) technology and the advanced manufacturing technique to develop the customised TMJ implant. The patient specific TMJ implant was fabricated using the computed tomography scanned data and the fused deposition modeling of RP for the TMJ surgery.Findings -This approach showed good results in fabrication of the TMJ implant. Postoperatively, the patient experienced normalcy in the jaw movements. Practical implications -Advanced technologies helped to fabricate the customised TMJ implant. The advantage of this approach is that the physical RP model assisted in designing the final metallic implant. It also helped in the surgical planning and the rehearsals. Originality/value -This case report illustrates the benefits of imaging/computer-aided design/computer-aided manufacturing/RP to develop the customised implant and serve those patients who could not be treated in the traditional way.
The approach utilised will be helpful in providing successful treatment to the deformed mandible and the mandible joints. This method allows to customise and to accurately fabricatie the implant. Advantages of this approach are that the physical model of the implant was tested for stability before the implantation, the surgeon can plan and rehearse the surgery in advance, it is a less invasive and less time-consuming surgical procedure.
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AbstractPurpose -The purpose of this paper is to apply rapid prototyping (RP) philosophy as a technology transfer in industries to take its time and costeffective advantages for development of rapid tooling (RT). Design/methodology/approach -Experimentations are performed for development of RT for sand casting, investment casting and plastic moulding applications.Findings -This paper reports the procedures developed for manufacture of production tooling using RP. A cost/benefit model is developed to justify implementation of RP as a technology transfer in industries.Research limitations/implications -The examples are limited to parts build by fused deposition modelling RP process. However, the concepts experimented may be applied for other RP processes. Practical implications -RP has proved to be a cost-effective and time-efficient approach for development of RT, thereby ensuring possibility for technology transfer in casting as well as plastic industries. Originality/value -This is the pioneer attempt towards quantifying RP benefits, in view of technology transfer. This paper presents original case studies and findings on the basis of experimentations performed in foundries.
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