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All Journal Jurnal IPTEK R.E.M (Rekyasa Energi Manufaktur) Jurnal Turbo : Jurnal Program Studi Teknik Mesin Jurnal Elementer (Elektro dan Mesin Terapan) INOVTEK POLBENG International Journal of Marine Engineering Innovation and Research JISO : Journal of Industrial and Systems Optimization Educivilia: Jurnal Pengabdian Pada Masyarakat Jurnal Pengabdian Masyarakat : Pemberdayaan, Inovasi dan Perubahan PROCEEDINGS CONFERENCE ON DESIGN AND MANUFACTURE AND ITS APPLICATION
Primaningtyas, Widya Emilia
Politeknik Perkapalan Negeri Surabaya
Religion Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Transportation Other

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DESIGN OF A SANDBLASTING WASTE SIEVE MACHINE (CASE STUDY OF SHIPYARD) Indrawan, Rizal; Utomo, Alfarell Akbar Pradhana; Fajardini, Ridhani Anita; Bisono, Fipka; Setiawan, Tri Andi; Purnomo, Dhika Aditya; Rosalina, Amanda; Primaningtyas, Widya Emilia
TURBO [Tulisan Riset Berbasis Online] Vol 14, No 2 (2025): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v14i2.4559

Abstract

At the shipyard, the sandblasting process is routinely carried out to clean material surfaces from rust and other contaminants. This process produces waste in the form of used sand mixed with metal fragments and other debris, requiring separation before the waste can be reused as a concrete mixture. Currently, the separation process is still performed manually, which is considered inefficient due to the large volume of waste, averaging 42 tons per day. To address this issue, the author designed a sandblasting waste sieving machine to make the separation process more automatic and effective. The structural design and strength analysis were carried out using Autodesk Fusion 360 software. The simulation results of the selected design concept showed a minimum safety factor of 6.51, a maximum von Mises stress of 38.134 MPa on the main frame, and a maximum displacement of 0.186 mm on the sieve holder. The design has an estimated total manufacturing cost of Rp4.244.000,-.  
The Effect of Coconut Fiber Usage and Clamshell Powder Replacement for Calcium Silicate Board’s Bending Strength Khafifulloh Al Faqih Zam Zammi; Widya Emilia Primaningtyas; Imah Luluk Kusminah; Novi Indah Riani; Rahma Rei Sakura; Benedicta Dian Alfanda
International Journal of Marine Engineering Innovation and Research Vol. 10 No. 1 (2025)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i1.4744

Abstract

Calcium silicate boards (CSB) are being explored in the maritime industry due to the mechanical strength and its resintance to humidity. The common CSB comprises fiber, silica sand, and portland cement. Clamshell is one of marine waste, who has a high calcium carbonate (CaCO3) content. Coconut fiber, a natural fiber known for its high strength and durability, presents sustainable solutions for enhancing the material properties of CSB. This study explores the forming mechanism and mechanical properties of the CSB in the usage and varied volume fraction addition of coconut fiber with the varied portion replacement silica sand using clamshell powder. The bending test was performed, and the experimental results were analyzed using ANOVA, to understand the effect of the mixture composition on the bending strength of the CSB. The addition of volume fraction coconut fiber significantly improve the bending strength of the boards, while the replacement of silica sand using clamshell powder gives various result. The maximum bending strength was 13.87 ± 0.64 Mpa by 0% clamshell powder replacement in 9% coconut fiber, and significantly drop at 8.26 ± 2.20 MPa by 50% clamshell powder with 50% silica sand. In fully portion replacement of silica sand, in which the addition of 100% clamshell powder, with 9% coconut fiber, the bending strength measured at 10.29 ± 1.31 MPa. The highest results exceeding the minimum requirement in ISO-8336 category A and B (saturated condition) , class 3 (>13 MPa) standards for interior wall installations. This study providing a more robust and eco-friendly materials alternatives that supports non or maritime industry needs in while resolve the environmental issue.
Analysis of Fly Ash and Sandblasting Waste Addition in Cementitious Composite Lawn Table Reinforced by Cocofiber and Wiremesh Widya Emilia Primaningtyas; Inshiro Auliyasari; Wiwik Dwi Pratiwi; Adristi Nisazarifa; Desrilia Nursyifaulkhair; Amanda Rosalina
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 4 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i4.4836

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.
Escalation of Capacity and Quality PS60 Casting Production by Gating System Modification Widya Emilia Primaningtyas; Dhika Aditya Purnomo; Silvi Arianti; Kiki Dwi Wulandari; Benedicta Dian Alfanda; Risa Nurin Baiti
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 1 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i1.5042

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.
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 : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i2.5467

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.
Co-Authors Abdullah, Kharis Abi Rafdi Haidi Abid Zaidahul Barok Abu Zamani Adristi Nisazarifa Ahmad, Mahasin Maulana Alfanda, Benedicta Dian Alfanda, Benedicta Dian Aloysius Yudhistira Adi Nugraha Amanda Rosalina Aminatus Sa’diyah Amir Biqi Andiana, Rocky Andita Dharmayanti Fatimatu Zahro Anggara Trisna Nugraha Ariani, Silvi Auliyasari, Inshiro Bayu Wiro Karuniawan Berlyan Putri Anugrah Nillahi Ts. Budianto Budianto Cahyono, Luqman Chamim Handoyo Desrilia Nursyifaulkhair Dhika Aditya Purnomo Dwi Sasmita Aji Pambudi Dymaseka Nasbih Sabbilli Endang Pudji Purwanti Enggar Dyah Nailufah Haryanti Evy Agnessylviana Rooseta Fadhli, Muhammad Rizqi Khoironi Fais Hamzah Fajar Andi Nugroho Fajardini, Ridhani Anit Fajardini, Ridhani Anita Farizi Rachman Feri Alfian Pradana Fipka Bisono Fitriyah, Nadiyatul Galuh Anitasari Imah Luluk Kusminah Indrawan, Rizal Inshiro Auliyasari Khafifulloh Al Faqih Zam Zammi Kiki Dwi Wulandari Kusminah, Imah Luluk 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 Ni'matuzzahroh, Ludia Nindyapuspa, Ayu Ningrum, Dwi Setia Nisazarifa, Adristi Novi Indah Riani Nursyifaulkhair, Desrilia Pradana, Feri Alfian Pramesti, Lely Pranowo Sidi Pratiwi, Sindi Wahyu Pratiwi, Wiwik Dwi Priyambodo Nur Ardi Nugroho Purnomo, Dhika Aditya Purnomo, Dhika Aditya Rahma Rei Sakura Rahma Rei Sakura Riani, Novi Indah Rina Sandora Risa Nurin Baiti Riska, Bimmanda Muhammad Rosalina, Amanda Sakura, Rahma Rei Santoso, Budhi Silvi Arianti 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 Utomo, Alfarell Akbar Pradhana Virgiana Kusuma Pratiwi Wahyuniarsih Sutrisno Wildan Al Farizy Rif’an Wiwik Dwi Pratiwi Wiwik Dwi Pratiwi Wulandari, Kiki Dwi Wulandari, Kiki Dwi Zammi, Khafifulloh Al Faqih Zam Zidane Al Bayan Sulaksono