Jurnal Ilmu Teknik Mesin (JITM)

Analisis Efisiensi Proses Pemotongan Wrapping Tape dengan Menggunakan Metode Value Stream Mapping (VSM) dan Pendekatan Lean Manufacturing

2026-01-19T04:20:00+00:00

The wrapping tape cutting process is still performed manually using scissors,
leading to several issues such as inconsistent cut sizes, long processing times,
and high labor requirements. This study aims to analyze the efficiency of the
wrapping tape cutting process using a Lean Manufacturing approach and the
Value Stream Mapping (VSM) method. Through direct observation and time
measurement, waste identification and production activity mapping were
carried out. The results show that the use of a semi-automatic wrapping tape
cutting tool can reduce processing time from 30,089 seconds to 27,067 seconds.
In addition, the required number of workers decreased by 40%. This
improvement not only enhances time and labor efficiency. Calculations indicate
that the payback period for the investment in this tool is approximately 7 days.
Thus, the lean approach has proven effective in improving process efficiency
within a manufacturing environment.

Studi Desain Ulang Frame Roller Conveyor Dengan Material SS400 Menggunakan CAD (Autocad)

2026-01-19T04:07:46+00:00

This study discusses the redesign and modification of the roller conveyor frame
in the hopper area which is often damaged due to excessive loads and
deformation during the operational process in the coal mining industry. The
main problem found is deformation of the frame structure which causes
operational disruption and increased downtime. To overcome this, a frame
redesign was carried out using SS400 material which has better strength than
the previous material (SS330). The design process was carried out using
AutoCAD software to produce accurate engineering drawings that meet
industry standards. The modifications made include the addition of a double
frame system, the use of a sliding frame that can be pulled, and strengthening
the structure with bracing. Design evaluation was carried out through
simulations using SolidWorks to test the resistance of the structure to static
loads. The results of the study showed that the new design was able to increase
strength, speed up the maintenance process, and reduce the frequency of
damage and operational costs

Rancang Bangun Alat Pengecekan dan Treatment Arang serta Analisis FEA pada Rangka

2026-01-19T03:54:41+00:00

The selection of the right material for each component. The calculation of the
joint strength is carried out through analytical methods of manual
calculations, to ensure the accuracy of the results. Various types of joints,
including bolted, welded, and adhesive joints are evaluated to determine the
best option in terms of strength and durability. Testing is also carried out to
validate the results and ensure the performance of the device in real situations.
The results of this study provide in-depth insight into the optimal design and
joint strength required for charcoal treatment and treatment devices, as well
as provide practical recommendations for the development of more reliable
and safe devices. Thus, this study is expected to contribute to improving the
efficiency and safety of the drying process of the moisture content of charcoal
before entering the production proces

Analisis Efisiensi Proses Pemotongan Wrapping Tape dengan Menggunakan Metode Value Stream Mapping (VSM) dan Pendekatan Lean Manufacturing

2026-01-19T04:14:29+00:00

This study aims to design and devolop an automatic weighing system for PVC
colourant material at the PT XYZ warehouse to overcome the issue of
inaccurate weighing, which leads to material waste and reduced process
efficiency. Additionally, the study seeks to determine the Defect Per Million
Opportunities (DPMO) value and sigma level before and after the
implementation of the automatic weighing system.The research method used is
Six Sigma with the DMAIC (Define, Measure, Analyze, Improve, Control)
approach. Data was collected through observation, interviews, and field
studies, and then analyzed using tools such as fishbone diagrams, FMEA, and
DPMO calculations to measure performance and the effectiveness of the
designed system. The results show that the automatic weighing system
successfully reduced the DPMO value from 17,369.71 to 5,144.36 and
increased the sigma level from 3.61 to 4.07. The defect percentage also
decreased from 3.50% to 1.03%. Thus, the automatic weighing system
effectively improves the accuracy, efficiency, and quality of the PVC colourant
weighing process at the PT XYZ warehouse

ANALISIS OPERASIONAL BARGE LOADING CONVEYOR (BLC) SEBELUM DAN SESUDAH PENINGKATAN KAPASITAS MENGGUNAKAN METODE VALUE STREAM MAPPING (VSM)

2026-01-19T04:00:42+00:00

One of the priority projects developed by PT MST is increasing the capacity of
the Barge Loading Conveyor (BLC) from 4000 TPH to 6000 TPH to achieve a
production target of 30 Million Tons Per Year. However, the increase must be
evaluated. Therefore, this study aims to explore the value before and after the
capacity increase. The method used to rotate is Value Stream Mapping (VSM).
VSM is calculated based on 2 components, namely Process Cycle Efficiency
(PCE) and reducing cycle time. Operational data was taken in two periods,
namely before the increase in January–February 2024 and after the increase
in July–August 2024. The average VSM result before the increase from the PCE
calculation was 92.5 to 96%, and a decrease in processing time by 27% and
production waiting time by 28%. The conclusion of this study is that VSM
increased by 3.5% after increasing capacity from 4000 TPH to 6000 TPH.

MODIFIKASI FRAME GUIDE EDGE TAPE MESIN STEEL CUTTING DENGAN DESAIN DAN ANALISIS AS POROS DUDUKAN EDGE TAPE MENGGUNKAN METODE FEA

2026-01-19T03:48:33+00:00

Currently the workbench used by Dept. PRL employees needs repair. The work
This study aims to modify the Frame Guide Edge Tape on the DBB3 Steel
Cutting machine to reduce scrap caused by edge tape off center issues. The
modification process involved designing a new frame and edge tape shaft seat
using SolidWorks software, followed by analysis through the Finite Element
Analysis (FEA) method. The frame was modeled in 3D to ensure stress
distribution and safety factors met the required standards. The total mass of the
frame was calculated at 348.27 N. Simulation results showed the maximum
stress on the frame was 0.186 MPa with a safety factor of 1.346, while the shaft
recorded a maximum stress of 242.764 MPa with a safety factor of 1.0. Weld
joints were tested for strength, producing a maximum load of 48,352 N,
significantly exceeding the actual working load of 40.912 N, confirming their
structural safety. Bolt connections were also evaluated, showing a shear stress
of 1.86 N/mm², well below the allowable limit. The analysis results indicate
that the modified frame design can improve safety and has the potential to
reduce production scrap. The implementation of this design is expected to
minimize material loss and enhance the operational efficiency of the DBB3
Steel Cutting machine