Biomaterial components (PMMA/HA/Sericin) are composite biomaterial that have complemented each other, which HA is able to improve the mechanical properties, biocompatible and osteoconductivity. PMMA has the ability biocompatible with human tissue and easy manipulated, while sericin can improve cell viability. Analysis of the composite composition is important to do more in depth, but the design method in the analysis of research also has significant impact in generating research output and prediction output. Analysis of the design method to determine the method of designing the optimal research was needed. This research used 3 factors: Poly methyl methacrylate (PMMA) powder (with concentration of 40% to 60%), Hydroxyapatite (HA) powder (with concentration of 10% to 25%) and Sericin (with concentration of 0.16% to 0.32%). This research is done to identify the effect of individual components of the composite and analyze the design method to obtain the best of diametral tensile strength (DTS) with a small error. The result of two methods was found that the 2k factorial design method give higher DTS (PHS401032 = 25.49MPa) than that of Taguchi method (PHS601532 = 24.82MPa). The error of 2k Factorial design method between validation and model prediction is 0.27%, which smaller than Taguchi method (7.45%).
Indonesia is attempting to rebuild the entire country's condition to the "New Normal" era during the COVID-19 pandemic. One of the emerging technologies with significant potential for dealing with the crisis is Immersive Technology (ImTech). In Indonesia, there is a growing demand for immersive technologies such as Virtual Reality (VR), Augmented Reality (AR), and Mixed Reality (MR). The Indonesian government is actively prioritizing digitalization implementation in various sectors to stimulate a post-COVID-19 recovery. This study aims to map the current and potential future applications of ImTech in Indonesia about dealing with the "New Normal" following the COVID-19 pandemic. A systematic literature review (SLR) was used to analyze the publications for a thorough understanding of the existing ImTech applications in Indonesia. According to 50 papers, the ontology of current ImTech applications in Indonesia is produced, focusing on four sectors (medical, industry, tourism, and education). As indicated by the growth of "start-ups" relating to this technological application, Indonesia has enormous potential to adopt ImTech. The future application of this technology is discussed on the industrial sector.
Mixed reality as an emerging technology can improve users' experience. Using this technology, people can interact between virtual objects and the real world. Mixed reality has enormous potential for enhancing the human cyber-physical system for different manufacturing functions: planning, designing, production, monitoring, quality control, training, and maintenance. This study aims to understand the existing development of mixed reality technology in manufacturing by analysing patent publications from the InnovationQ-Plus database. Evaluations of trends in this developing technology have focused on qualitative literature reviews and insufficiently on patent technology analytics. Patents connected to mixed reality will be mapped to give technology experts a better grasp of present progress and insights for future technological development in the industry. Thus 709 patent publications are systematically identified and analysed to discover the technological trends. In addition, we map existing patent publications with manufacturing functions, and illustrate this with a technology function matrix. Finally, we identify future research in human cyber-physical system development by enhancing different human senses to give users more sensations while interacting with virtual objects. We provide insight into this human cyber-physical system development in three industries: automotive, food and beverage, and textiles. OPSOMMINGGemengde-werklikheid is ʼn opkomende tegnologie wat gebruikers se ervaring kan verbeter. Hierdie tegnologie laat mense toe om interaksie te hê met virtuele voorwerpe in die regte wêreld. Gemengde-werklikheid het baie potensiaal om die mens-kuber-fisiese stelsel vir verskeie vervaardigingsprosesse te verbeter, soos beplanning, ontwerp, produksie, monitering, gehaltebeheer, opleiding en instandhouding. Hierdie studie ondersoek die ontwikkeling van gemengde-werklikheid tegnologie in vervaardiging deur ʼn hersiening van patente in die InnovationQ-Plus databasis. Tendense in hierdie ontwikkelende tegnologie fokus op kwalitatiewe literatuurstudies eerder as op kwantitatiewe patent tegnologie ontledings. Patente wat met gemengde-werklikheid assosieer word, word gekarteer om tegnologiekenners ʼn beter begrip van bestaande vordering en insigte vir toekomstige ontwikkeling in die bedryf te gee. So word 709 patente sistemies identifiseer en ontleed om die tendense te ontdek. Verder word bestaande patente gekarteer volgens vervaardigingsfunksies -dit word met ʼn tegnologiefunksiematriks illustreer. Laastens word toekomstige navorsing oor mens-kuber-fisiese stelselontwikkeling identifiseer deur verskillende sintuie te gebruik om gebruikers meer sensasies te gee wanneer hulle met virtuele voorwerpe werk. Insig word spesifiek in die motor, voedsel-en drank-, en tekstielbedryf verskaf.
Work posture analysis is important because the wrong work posture can cause discomfort and fatigue in workers that can cause musculoskeletal disorder (MSDs). Rapid entire body assessment (REBA) is one of semi-quantitative posture analysis methods that are sensitive to the risk of MSDs in various occupational types. REBA analysis is usually done manually, so it takes a long time and there is a possibility of error. Therefore, it is necessary to design an REBA tool based on Android application analysis to facilitate and accelerate in posture analysis. This paper designed a tool of REBA analysis based on the Android application using MIT App Inventor 2. Furthermore, verification tests, validation, and usability tests are performed on the application design. There is also time comparison of REBA analysis manually and by using application (case study in Small and Medium Industries Aluminum, Giwangan, Yogyakarta). The results of this study indicate that the design of REBA applications based on Android has met the verification and validation test. Based on the usability test performed using System Usability Scale (SUS) method, the value obtained is 63.5, which means quite useful. In addition, the results of comparative REBA analysis times indicate a significant difference between manual calculation time and using the application, with time savings of REBA analysis using application of 51.19%.
Until recently, stent has been used effectively to open a cardiovascular blockage due to the plaque. Various designs of stent are available commercially in the marketplace. Thus, it was difficult to select the suitable stent that meets to the varying needs of the patient beyond the material, such as flexibility, inflated diameter, and radial strength. The present study would focus on finding the effect of link design to its flexibility, while the strut design was remained and the material was the same. The study was carried out by finite element modeling and software ABAQUS 6.13 was employed to perform the simulation. The metal alloy of Cobalt has been selected to be material of the stent model. A thin stent model consists of a pair of the strut which was connected by three links (L1, L2, L3) with a thickness of 60µm and 80µm frame wide. The model has a size of 1.237mm in outer diameter and 2mm long. The flexibility was expressed by the curvature index as the ratio of bending angle to stent length. The flexibility was performed at the bending moment concerning x-axis (Mxx) and y-axis (Myy). Results indicated that link design L1 performed the highest flexibility compared to other link designs which was indicated by the highest curvature index at the same value of bending moment (Mxx and Myy).
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