OPTIMIZATION OF FUSED DEPOSITION MODELING PARAMETERS FOR HIPS FLEXURAL STRENGTH WITH TAGUCHI METHOD

HIPS (High Impact Polystyrene) is one of the materials used in 3D printing. Research and application of the use of this material have not been done much, especially in the applications that require flexural strength. This study aims to find a combination of FDM (Fused Deposition Modelling) process parameter settings, that produce experiments with the highest flexural strength, with the optimization process using the experimental design of the Taguchi method with FDM parameters namely the orientation position of the specimen, fill pattern, fill density, and layer. The results showed the confirmation experiment produced the highest flexural strength (32.6753 MPa). In the experiment before confirmation, the highest flexural strength (31,3768 MPa) was shown in experiment number 5 (3rd orientation position, fill pattern lattice, 75% fill density, and 0.125 mm layer thickness)

Optimization of fused deposition modeling parameters for hips flexural strength with Taguchi method

Abstract. HIPS (High Impact Polystyrene) is one of the materials used in 3D printing. Research and application of the use of this material have not been done much, especially in the applications that require flexural strength. This study aims to find a combination of FDM (Fused Deposition Modelling) process parameter settings, that produce experiments with the highest flexural strength, with the optimization process using the experimental design of the Taguchi method with FDM parameters namely the orientation position of the specimen, fill pattern, fill density, and layer. The results showed the confirmation experiment produced the highest flexural strength (32.6753 MPa). In the experiment before confirmation, the highest flexural strength (31,3768 MPa) was shown in experiment number 5 (3rd orientation position, fill pattern lattice, 75% fill density, and 0.125 mm layer thickness)

PENGARUH ORIENTAS OBYEK HASIL FUSED DEPOSITION MODELING PADA WAKTU PROSES

Penelitian ini bertujuan untuk mengetahui pengaruh orientasi print pada 3D print jenis Fused Deposition Modeling (FDM) terhadap respon yang dihasilkan. Spesimen disiapkan dengan variasi tiga orientasi, satu horizontal dan dua vertical. Tiap orientasi spesimen diprint sebanyak tiga kali masing – masing menggunakan material PLA dan ABS. Respon yang akan diamati adalah waktu proses. Dari hasil penelitian ini disimpulkan bahwa proses printing dengan orientasi III merupakan proses printing tercepat selama (2486 detik stopwatch) dan orientasi II merupakan proses printing terlama (2846 detik stopwatch)

PROCESSING AND MATERIALS EFFICIENCY IN FUSED DEPOSITION MODELING: A COMPARATIVE STUDY ON PARTS MAKING USING ABS AND PLA POLYMERS

There are alot of materials available on market to make a 3D printing part, shuch as ABS, PLA, HIPS, PETG and others. On 3D printing product there are some responses that could be observeb. Some of responses are processing time, mechanical properties dimension accuracy and others. This research is conducted to compare the ABS and PLA efficiency on fused deposition modeling process. Processing time and material consumption are the factor that used in this research to compare the eficiency between ABS and PLA. Processing time, and material consumption were the responses that were measured. The study reports that both of processing time and material consumption using ABS as a printing material was found more efficient compared with using PLA. Printing process using ABS was 2661 seconds, which was faster than using the PLA was 2808 seconds. For the material consumption, show that the average mass of ABS was 7,33 grams compared with using PLA was 8,17 grams. The estimated value of the Axon is always greater than the value of the time recording process and measurement of the mass printing result

Proses Remanufaktur pada Komponen Otomotif

Kendaraan telah menjadi salah satu kebutuhan penting bagi manusia dalam berbagai aktifitas sehari-hari. Jumlah sepeda motor menunjukkan peningkatan dalam setiap tahunnya. Hal ini menyebabkan limbah berupa komponen yang rusak dari sebuah kendaraan juga terus meningkat. Saat ini, beberapa bentuk dari limbah tersebut dapat direcycle agar materialnya dapat dimanfaatkan kembali. Beberapa komponen yang telah rusak sebenarnya masih dapat digunakan lagi dengan beberapa proses seperti repair, refurbish atau remanufaktur. Proses remanufaktur adalah salah satu recovery option paling tinggi dalam mengolah limbah. Dalam melakukan perancangan proses remanufaktur untuk komponen-komponen otomotif, perlu adanya pemilihan komponen yang akan dijadikan objek. Setelah pemilihan objek, maka harus dibuat serangkaian proses yang harus ada di dalam proses remanufaktur komponen otomotif seperti disassembly, cleaning, inspection, recondition, dan reassembly. Tahap akhirnya adalah merancang skema proses remanufaktur untuk komponen otomotif. Ciri khas dalam proses remanufaktur komponen otomotif adalah adanya special treatment seperti normalizing, hardening untuk beberapa komponen otomotif yang berguna untuk mengembalikan atau bahkan meningkatkan performa atau mechanical properties dari komponen yang diremanufaktur

The Effect of Product Quality on the Pricing of New and Remanufactured Short Life-cycle Product

Remanufacturing is one of the recovery process that has become significant among many attempts to mitigate the landfill exhaustion, especially from mountain of wastes that come from short life-cycle products disposal. However, remanufactured product are often perceived to have lower quality compared to the new one. There are misconception about remanufactured product and lack of knowledge about its characteristics. On the other hand, several studies show that price and product quality have positive relationship. This paper investigates the effect of product’s perceived quality on the pricing decision, to maximize the profit of the retailer and the manufacturer. We develop pricing decision model for new and remanufactured short life-cycle product in a closed-loop supply chain consists of a manufacturer and a retailer, where the manufacturer is a Stackleberg leader. We find that lower product’s perceived quality would decrease the retail and wholesale prices of new and remanufactured products, but does not affect the new product’s sales volume significantly. Also, the speed of change of demand influences the optimum total profit

Drivers and Barriers of Mobile Phone Remanufacturing Business in Indonesia: Perspectives of Retailers

Remanufacturing is deemed to be effective in reducing WEEE. Existing studies on remanufacturing mostly focus on operational issues, product acquisition, and pricing. However, some doubts about remanufacturing business arise in developing countries, where there is less regulation on remanufacturing and less environmental awareness. This study aims to investigate the prospects of remanufacturing business from the retailers' perspectives through in-depth interviews on three retailers in Surabaya, Indonesia. The main drivers for mobile phone remanufacturing business are its affordable and competitive price, big demand for popular mobile phones and high-end mobile phone, the opportunity for specification upgrade, and its suitability with the needs of Indonesian people. The main barriers for remanufacturing business are the possibility for cannibalizing new mobile phones' market share, the uncertainty of core supply, discontinuity of replacement part supply, lack of product knowledge among consumers and retailers, hesitation of retailers to sell remanufactured products, and lack of strict and clear regulations about remanufacturing business. Findings of this study provide insights to prospective mobile phone remanufacturers of what needs to be tackled to start a prosperous business. On the theoretical side, it provides complementary knowledge to existing studies that have been conducted mostly on countries that have higher environmental awareness

The Effect of Product Quality on the Pricing of New and Remanufactured Short Life-cycle Product

Remanufacturing is one of the recovery process that has become significant among many attempts to mitigate the landfill exhaustion, especially from mountain of wastes that come from short life-cycle products disposal. However, remanufactured product are often perceived to have lower quality compared to the new one. There are misconception about remanufactured product and lack of knowledge about its characteristics. On the other hand, several studies show that price and product quality have positive relationship. This paper investigates the effect of product�s perceived quality on the pricing decision, to maximize the profit of the retailer and the manufacturer. We develop pricing decision model for new and remanufactured short life-cycle product in a closed-loop supply chain consists of a manufacturer and a retailer, where the manufacturer is a Stackleberg leader. We find that lower products perceived quality would decrease the retail and wholesale prices of new and remanufactured products, but does not affect the new products sales volume significantly. Also, the speed of change of demand influences the optimum total profi

Mechanical Properties Enhancement of AZ91 Magnesium Alloy Reinforced with Various Ratios of Titanium Particles and Processed by ECAP

This study utilized AZ91 magnesium-aluminum alloy as the matrix for magnesium-based composites, reinforced with micron-sized titanium (Ti). Gravity casting and mechanical stirring were employed to fabricate specimens with 0 wt.%, 0.3 wt.%, and 0.5 wt.% Ti reinforcement. Heat-treated samples underwent Equal Channel Angular Pressing (ECAP), and microstructures were analyzed via SEM and XRD. The experimental results demonstrate that the addition of micron-sized titanium improves the yield strength, ultimate tensile strength, and hardness. The inclusion of 0.5 wt.% titanium powder resulted in a 17.5% increase in ultimate tensile strength and a 37% increase in yield strength. After secondary processing with ECAP, the ultimate tensile strength showed an additional 25% increase, while the yield strength increased by 13.5%. Vickers hardness test results reveal a significant 13.7% strength improvement with the addition of 0.5 wt.% titanium powder, and after ECAP secondary processing, there was a marginal additional increase of 0.8%

A preliminary study of technical feasibility for mobile phone remanufacturing in Indonesia

Abstract— Remanufacturing is an important element in making sustainable production and consumption in our society. Unfortunately, remanufacturing is not well-developed in Indonesia yet, especially compared to developed countries. To start a remanufacturing process, it is necessary to know the feasibility technically, economically and environmentally. This paper aims to find out whether the remanufacturing of mobile phones is technically feasible to be done in Indonesia. Mobile phone is chosen because it is one of the biggest e-waste takers lately. Four mobile phone brands are selected for this purpose. The method used in this research was qualitative survey, which was conducted at the service center of each brand. From this research we find some barriers and facilitators in the remanufacturing implementation. In addition, we propose some attributes in every step of the remanufacturing process. It can be concluded that technically, remanufacturing of mobile phones in Indonesia can be implemented. There are notable processes in every step of remanufacturing that affect the feasibility of mobile phone remanufacturing, such as the selection of phone types and the meticulousness in every step to avoid damage during the remanufacturing process