An Experimental Investigation On The Dimensional Accuracy Of Melaka Historical Artifact Fabricated Using Additive Manufacturing System

Kerk, Zi Ling (2019) An Experimental Investigation On The Dimensional Accuracy Of Melaka Historical Artifact Fabricated Using Additive Manufacturing System. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The propose of this study is to bring the historical artifacts collections back, producing 3D replicas in order to sustain its cultural value. Reverse engineering and additive manufacturing systems are the technologies applied to execute this project. Apart from that, this research work is carried out based on a case study of an aritifact namely the Dutch Gun that was obtained from Stadthuys Museum. The main issues highlighted in this project is the dimensional accuracy study of 3D printed component. Today, there is a plethora of valuable and precious historical artifacts inherited from ancestors are facing extinction due to uncontrolled environment such as humidity. Other factors include biodeterioration, and destruction by modernization resulting in losing their original appearance. Current basic techniques are also unable to replace the historical artifact due to high cost, material and expert skilled-labor are needed. Based on this research study, plenty of preservation works of historical artifact all over the world proved that a concrete interaction between cultural heritage and modern technology enable to bring these collections back, producing a 3D replica with a close similarity compared to its real product. Hence, in this research project, reproduction of the Dutch Gun using non contact reverse engineering (RE) systems and powder-based additive manufacturing (AM) of selective laser sintering (SLS) techniques. The non-contact RE systems used are the Rexcan and Tscan. Meanwhile, the AM machines are the Projet 460 Plus, and Farsoon Technology SS402P. The collected data were analyzed using statistical analysis. From the observation, it is found that the combination of Tscan and SLS produced a fine detail of the selected features. However, for the dimensional accuracy, the combination of the Rexcan and SLS yielded a better results as compared to the combination of the Tscan and SLS. This meets the expectation as the Rexcan is better in accuracy over the Tscan as per the specifications. As the conclusion higher accuracy of RE system produces a better dimensional accuracy of printed prototype. However, for the special features investigation, the hand held TScan produces a better physical prototype of the Dutch Gun. Thus, 3D scanned data, RE system specifications, and angle of scanning are the significant factors that influence the quality of the printed prototype in terms of asthetics, and dimensional accuracy. Moreover, both RE systems are suitable for 3D data aqusition process since an artifact is not considered as a precision part.

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