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Journal : International Journal of Marine Engineering Innovation and Research

Study of Variation of Binder Materials On Permeability Of Foundry Green Sand Widya Emilia Primaningtyas; Farizi Rachman; Tisya P. Ramadhani; Aminatus Sa'diyah
International Journal of Marine Engineering Innovation and Research Vol 8, No 2 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i2.16609

Abstract

The preparation of standards and procedures for the production process in the manufacturing industry plays an important role in achieving acceptable products and in accordance with the desired quality. Based on the data from the quality control report of a foundry company, casting defects slightly exceed the maximum reject rate. It was found that the moisture content in the molding sand produced according to the procedure exceeded the maximum water content in the molding sand. The research was conducted as an effort to improve the quality of the company's production in reducing reject products. Permeability values of molding sand and quantitative area of cast defects will be compared, as a variations of bentonite and molasses binders , in three variations of the percentage addition of binder, respectively: 1, 3, and 5%. The Anova Two Way approach was used to statistically assess the results of the permeability test of the test specimens to ensure the effect of the predictor variables on the response. The results indicated that the more molasses, 5% added to the molding sand, gave the highest permeability of 53.50 ± 0.50 cm3/minute and gave the lowest cast defect area of 11.97%. The addition of bentonite binder produces a phenomenon that is inversely proportional to the addition of molasses binder.
Escalation of Capacity and Quality PS60 Casting Production by Gating System Modification Primaningtyas, Widya Emilia; Purnomo, Dhika Aditya; Ariani, Silvi; Wulandari, Kiki Dwi; Alfanda, Benedicta Dian; Baiti, Risa Nurin
International Journal of Marine Engineering Innovation and Research Vol 9, No 1 (2024)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i1.20125

Abstract

A ship tank’s ventilation pipes protector, called PS60, is produced by an investment casting process using CF8M material. Shorter time production for PS60 products, occurred due to the rise of PS60 demand, resulting non class casting product quality. Reported that 15% of PS60 defective products were shown from each production group. Porosity defects are the most common defects found. Recalculating riser’s, runners’s, and ingates’s dimensions, then remodeling designs a mold gating system done in order to reduce the percentage of defective products and increase production capacity. Remodeling gating system and casting simulation done by ProCast 2018 software using New Advanced Porocity Module (NAPM). The casting simulation output was porosity defects location and percentage, which were further analyzed. The product produced using a mold Gating system with a new layout, had 314.73 cm3 of empty part in the mold cavity which was identified as a porosity defect which was 4.58% of the total volume of the cast product. The total value of  the porosity after remodeling decreases by 2.39% from the existing product. 93.3% of the cavity inside the product is categorized as macroscopic porosity defects that are centralized in the riser and pouring basin areas, where in the casting product finishing process, these areas will be removed. Modification of the Gating System in PS60 mold escalates twice of PS60 capacity production than the origin.
Analysis of Fly Ash and Sandblasting Waste Addition in Cementitious Composite Lawn Table Reinforced by Cocofiber and Wiremesh Primaningtyas, Widya Emilia; Auliyasari, Inshiro; Pratiwi, Wiwik Dwi; Nisazarifa, Adristi; Nursyifaulkhair, Desrilia; Rosalina, Amanda
International Journal of Marine Engineering Innovation and Research Vol 9, No 4 (2024)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i4.21852

Abstract

Concrete technology has significantly advanced and remains an interesting research topic. The demand for cement usage rises significantly due to concrete usage in various sectors. Cement production leads to air pollution issues and causes a greenhouse effect, even in the modern filtration era. Fly ash is an industrial waste that has been identified as a viable substitute for cement due to its pozzolanic properties. Silica Sand is sandblasting waste, where added value is needed. This study investigates the effectiveness of fly ash substitution in the cement portion of cementitious composite materials as an effort to minimize cement usage. Using sandblasting waste is an effort to implement 3R activity (reduce, reuse, recycle) for maritime waste.  Compressive and tensile tests were evaluated in the variation of fly ash substitution for cementitious composite reinforced by coco fiber and wiremesh model. The results show that a 40% fly ash substitution gives the highest compressive strength of 32.98 MPa and the tensile strength of 5.90 N/mm². The best model composition provides the increments of compressive and tensile strength compared to the control specimen at 43.60% and 12.60%, respectively. ANOVA tests confirmed the significance of the enhancing effect as the presence of fly ash, both for compressive and tensile strength. Additionally, static analysis simulations using Fusion360 software were performed and indicated that the cementitious composite lawn table prototype’s design is safe and has good formability, as a safety factor performed 2.26, exceeding the required value of 2.00. This result explicates that fly ash and waste materials can be effectively used in cementitious composites for practical applications.
Co-Authors Abdullah, Kharis Abi Rafdi Haidi Abid Zaidahul Barok Abu Zamani Ahmad, Mahasin Maulana Alfanda, Benedicta Dian Aloysius Yudhistira Adi Nugraha Aminatus Sa’diyah Amir Biqi Andiana, Rocky Andita Dharmayanti Fatimatu Zahro Anggara Trisna Nugraha Ariani, Silvi Auliyasari, Inshiro Baiti, Risa Nurin Bayu Wiro Karuniawan Berlyan Putri Anugrah Nillahi Ts. Budianto Budianto Cahyono, Luqman Chamim Handoyo Dwi Sasmita Aji Pambudi Dymaseka Nasbih Sabbilli Endang Pudji Purwanti Enggar Dyah Nailufah Haryanti Evy Agnessylviana Rooseta Fais Hamzah Fajar Andi Nugroho Farizi Rachman Feri Alfian Pradana Fipka Bisono Galuh Anitasari Kiki Dwi Wulandari Kusminah, Imah Luluk Kusuma, George Endri Kusumawardhani, Jeanny Marine Ardya Putri Viola Laila Radina Ningtyas M. Miftachul Munir Maulana Tanziilal Aziizir Rohiim Mazidah Alfarah Syawalyah Moch. Daffa Afif R. Tausa Mohamad Hakam Nindyapuspa, Ayu Ningrum, Dwi Setia Nisazarifa, Adristi Nursyifaulkhair, Desrilia Pradana, Feri Alfian Pramesti, Lely Pranowo Sidi Pratiwi, Wiwik Dwi Priyambodo Nur Ardi Nugroho Purnomo, Dhika Aditya Rahma Rei Sakura Rina Sandora Rosalina, Amanda Santoso, Budhi Siti Annuriyah Sri Puji Lestari Suheni Suheni Sumardiono Sumardiono, Sumardiono Tarisa Anggraini Tisya P. Ramadhani Tisya Pramesta Ramadhani Tjahyonowatie, Sri Tri Andi Setiawan Utomo, Agung Prasetyo Virgiana Kusuma Pratiwi Wahyuniarsih Sutrisno Wildan Al Farizy Rif’an Wiwik Dwi Pratiwi Wulandari, Kiki Dwi Wulandari, Kiki Dwi Zidane Al Bayan Sulaksono