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All Journal V-MAC (Virtual of Mechanical Engineering Article) Journal of Industial Engineering and Technology
Silvi Istiqomah
Universitas Telkom
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Kekuatan Tarik dan Biodegradabilitas Biokomposit PVA berpengisi Serbuk Kulit Kacang Tanah sebagai Separator Baterai Revvan Rifada Pradiza; Juniar Maulana Soliwi Putra; Silvi Istiqomah; Dwi Heru Siswantoro; Alfi Hasan; Mochamad Asrofi; Yayang Permadi; Deny Tomy Andrianto; Ananda Yuman Hardiansyah
Virtual of Mechanical Engineering Article Vol 11 No 1 (2026): V-MAC
Publisher : Prodi Teknik Mesin Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/v-mac.v11i1.7628

Abstract

Penelitian ini bertujuan untuk mengkaji pengaruh penambahan serbuk kulit kacang tanah terhadap sifat mekanik dan biodegradabilitas biokomposit berbasis Polyvinyl Alcohol (PVA) yang memiliki potensi aplikasi sebagai separator baterai. Biokomposit dibuat dengan penambahan pengisi serbuk kulit kacang tanah sebesar 0%, 2%, 4%, dan 6%, yang dicampurkan dengan matriks PVA menggunakan metode solution casting. Pengujian kekuatan tarik dilakukan sesuai dengan standar ASTM D882, sementara pengujian biodegradabilitas menggunakan ASTM D6003-96. Hasil penelitian menunjukkan bahwa penambahan serbuk kulit kacang tanah meningkatkan kekuatan tarik biokomposit seiring bertambahnya fraksi pengisi. Biokomposit dengan 6% serbuk kulit kacang tanah menghasilkan kekuatan tarik maksimum sebesar 5,67 MPa. Hasil ini dibuktikan dengan hasil penyerapan kelembaban pada penambahan 6% serbuk kulit kacang tanah yang memiliki hasil terendah, sehingga gugus O-H yang terbebas berkurang. Selain itu, hasil uji biodegradasi menunjukkan bahwa semakin tinggi serbuk kulit kacang tanah, semakin besar pula laju degradasi biokomposit, dengan penurunan berat tertinggi sebesar 62,70% pada sampel dengan 6% pengisi setelah 15 hari penguburan. Temuan ini menunjukkan bahwa serbuk kulit kacang tanah berpotensi meningkatkan sifat mekanik dan biodegradabilitas biokomposit, menjadikannya alternatif ramah lingkungan untuk bahan separator baterai
Improving Stock Availability Accuracy Using Min-Max Method for Material Requirement Planning (MRP) Item Bolt Set at PT Lion Metal Works Silvi Istiqomah; Fatnika Fauziyah; Ade Fathur Noviandre Majid; Kamelia Salsabilla; Perdana Suteja
Journal of Industrial Engineering and Technology Vol. 6 No. 2 (2026): 30 Juni 2026
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/jointech.v6i2.17042

Abstract

PT Lion Metal Works faces frequent raw material shortages and surpluses, disrupting production and emphasizing the need for better inventory management. This study aims to improve stock accuracy for bolt set items using the Min-Max method. The research involved analyzing historical data and forecasting demand to establish reorder points and optimal inventory levels. Data collection techniques included historical data analysis and statistical demand forecasting. The implementation of the Min-Max method increased stock accuracy from 87% to 90%. Prior to this method, inventory management experienced frequent discrepancies and inefficiencies. Post-implementation, these issues were significantly reduced, resulting in more stable inventory levels. Key factors in this improvement included precise demand forecasting, efficient procurement lead time, and effective safety stock management. The study confirms the Min-Max method's effectiveness in optimizing inventory management, cutting costs, and ensuring smoother production. Benefits of the study include enhanced stock accuracy and minimized production disruptions. Recommendations for further improvement involve developing advanced information systems, regular employee training, and better supplier relationships.
Co-Authors Ade Fathur Noviandre Majid Alfi Hasan Ananda Yuman Hardiansyah Deny Tomy Andrianto Fatnika Fauziyah Juniar Maulana Soliwi Putra Kamelia Salsabilla Mochamad Asrofi Perdana Suteja Permadi, Yayang Pradiza, Revvan Rifada Siswantoro, Dwi Heru