Article Per Year (5 Year)
p-Index From 2021 - 2026
0.408
P-Index
This Author published in this journals
All Journal Jurnal Ilmiah Teknik dan Sains (JITS) Journal of Engineering, Electrical and Informatics
Amallia Amallia
Universitas Buana Perjuangan Karawang
Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Mechanical Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Analisis Upaya Preventif Ketidakpastian Pasokan Bahan Baku melalui Pendekatan Safety Stock dan Reorder Point Yuni Susilawati; Ade Suhara; Amallia Amallia; Annisa Indah Pratiwi; Suryadi Suryadi
Jurnal Ilmiah Teknik dan Sains Vol. 4 No. 1 (2026): Agustus: Jurnal Ilmiah Teknik dan Sains (JITS)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat AKIPBA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62278/jits.v4i1.140

Abstract

PT. Tri Jaya Teknik merupakan perusahaan dengan sistem produksi make-to-order yang menghadapi ketidakpastian pasokan berupa keterlambatan pengiriman dan kesulitan memperoleh bahan baku sesuai spesifikasi yang berpotensi menghambat proses produksi. Penelitian ini bertujuan menganalisis proses pengadaan bahan baku, mengidentifikasi risiko keterlambatan pengadaan, serta menentukan pengendalian persediaan menggunakan metode Safety Stock dan Reorder Point (ROP). Penelitian menggunakan metode deskriptif kualitatif yang didukung pendekatan kuantitatif. Data diperoleh melalui observasi, wawancara, dan dokumentasi pada bagian purchasing, meliputi data pembelian besi hollow berukuran 60 × 60 × 2,3 mm dan lead time pengadaan selama Januari–April 2026. Data pembelian digunakan sebagai proksi permintaan karena data pemakaian material belum terdokumentasi lengkap. Analisis menunjukkan adanya risiko pengadaan yang berkaitan dengan ketidakpastian ketersediaan material, variasi kinerja pemasok, dan keterlambatan pengiriman. Hasil pengolahan menunjukkan rata-rata permintaan sebesar 54,98 batang per hari dengan standar deviasi 24,85 batang per hari. Pada tingkat pelayanan 95% dan lead time normal dua hari, diperoleh Safety Stock sebesar 58 batang dan ROP sebesar 168 batang. Kedua metode dapat menjadi dasar pengambilan keputusan pengadaan yang lebih terukur untuk mengantisipasi kekurangan bahan baku dan keterlambatan produksi. Namun, hasilnya perlu dievaluasi menggunakan periode pengamatan yang lebih panjang dan data pemakaian yang lebih lengkap.
Optimization and Efficiency of Spot Welding Process: Waste Reduction Through the Value Stream Mapping Approaches Amallia Amallia; Dhea Intan Patya; Rizki Aulia Nanda; Agus Supriyanto
Journal of Engineering, Electrical and Informatics Vol. 6 No. 1 (2026): February: Journal of Engineering, Electrical and Informatics
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jeei.v6i1.6726

Abstract

A four-wheeled vehicle bracket component manufacturing company experienced a surge in demand for a hook transport product. However, the production process was found to be inefficient due to the presence of non-value-added activities and barriers. The objective of the research was to identify and minimize waste in the production of spot welding, as well as to determine the takt time for hook transport production. To this end, a Value Stream Mapping (VSM) analysis was conducted, leveraging the existing VSM framework to assess the production process's efficiency for identify and eliminate non-value-added activities. The analysis revealed that the cycle process efficiency prior to the implementation of improvements stood at 74%, characterized by various forms of waste, including defects, over-processing, waiting, and motion. The subsequent improvement, as depicted in the anticipated future state value stream mapping, resulted in a 94% enhancement in cycle process efficiency, representing a 20% increase. Beyond the efficiency cycle process outcome, the takt time calculation for spot welding production set yielded a value of 52.85 seconds per product. This indicates that the takt time required for hook transport cycle production to meet consumer demand is 52.85 seconds. The implementation of the VSM method is expected to facilitate the identification and reduction of production waste, enhance efficiency, and optimize the fulfillment of demand targets.
Co-Authors Ade Suhara Agus Supriyanto Annisa Indah Pratiwi Dhea Intan Patya Rizki Aulia Nanda Suryadi Suryadi Yuni Susilawati