Jurnal Ilmu Teknik Mesin (JITM)

ANALISIS DESAIN DAN PERHITUNGAN KEKUATAN SAMBUNGAN LAS PADA ALAT REPAIR TIRE UNTUK SIZE BAN LT

2025-04-16T13:40:38+07:00

This research aims to analyze the design and joint strength of a tire repair tool
specifically designed for LT (Light Truck) size tires. The main focus of this study
is to ensure that the tool's design is not only efficient and functional but also
possesses adequate joint strength to withstand various operational conditions.
The study begins with the detailed design of the tool using joint calculation
principles and the SolidWorks software, followed by the appropriate material
selection for each component. The joint strength calculations are carried out
through analytical methods and manual calculations to ensure the accuracy of
the results. Various types of joints, including bolts, welding, and adhesives, are
evaluated to determine the best options in terms of strength and durability.
Experimental testing is also conducted to validate the results and ensure the
tool's performance in real-world situations. The findings of this research
provide in-depth insights into the optimal design and joint strength required for
the LT size tire repair tool and offer practical recommendations for the
development of more reliable and safe tools. Consequently, this research is
expected to contribute to the improvement of efficiency and safety in the tire
repair process for vehicles using LT size tires.

MODIFIKASI DAN PERHITUNGAN LIFETIME PIPA TEMBAGA TERHADAP SISTEM PNEUMATIK PLY SERVICE PADA MESIN BUILDING ALT E-2

2025-04-16T14:21:34+07:00

This study aims to modify the ALT E-2 pneumatic system by replacing PVC
hoses with copper pipes and calculating the lifespan of the copper pipes. The
calculation considers several important factors, such as corrosion, working
pressure, pipe wall thickness, and the strength of the copper pipe material used.
The results show that copper pipes have a higher lifespan and durability
compared to PVC hoses, both in terms of strength and material resistance to
pressure. This modification is expected to optimize similar pneumatic systems
in the industry. This study is hoped to provide useful guidelines for improving
the lifespan and reliability of pneumatic systems through the use of more
durable and robust copper pipes

MODIFIKASI LINER PADA CHUTE TRANSFER CONVEYOR ABC

2025-04-16T14:04:24+07:00

CC Company is a coal mining company operating in East Kalimantan
Province. Machine maintenance and repair are necessary to ensure smooth
production processes. The fixed plant department area is located at the port,
where the process of transferring coal from hauling to barges takes place. The
coal transfer process to the barges uses a conveyor, followed by a chute that
transports coal at a rate of 2000 Tph (tons per hour) with a conveyor speed of
3.2 m/s. This results in friction between the chute walls and the coal entering
the chute, causing the chute walls to wear out. The objective of the research is
to modify the chute liner and calculate the material strength, especially the weld
joints, bolt connections, and friction velocity. The researcher uses an
experimental research method by modifying the chute walls, which originally
used ASTM A36 material, to ceramic alumina. Based on calculations, it can be
concluded that the bolt connections, weld joints, load analysis, and wear
velocity produce safe values. The bolt connection strength is 4.191 N/mm² with
an allowable stress value of 90.9 N/mm²; the weld joint strength is 226,650 N
with an actual load of 4,359.996 N; the load simulation results in a stress value
of 0.10108 N/mm² with a material yield strength value of 250 N/mm²; and the
comparison of material wear velocity before and after modification is
3.959x10⁻⁸
respectively.
grams/second.mm² and 0.10599x10⁻⁸ grams/second.mm²,

Analisis Desain Housing Bearing Dengan Pendekatan Finite Element Method (FEM)

2025-04-16T13:48:38+07:00

PT. KTC is a coal mining company in Kutai Timur Regency, East Kalimantan
Province. To achieve production targets, the company undertakes machine
repairs and maintenance to ensure that the production process runs safely
and efficiently. PT. KTC faces the problem of damage to the bearing housing
on the impact roller conveyor. Therefore, it is necessary to design a new
bearing housing to address this issue. The purpose of the study is to determine
the strength of the material, particularly the factor of safety (FOS) and the
strength of bolt connections. The researcher uses a quantitative approach
method with data collected in the form of measurements, including both the
loads that occur and the object's dimensions. Based on the FOS calculations,
the FOS values before and after the design are 0.691 and 1.843, respectively.
The FOS calculation results before the design show an unsafe value, below
the safety factor standard based on Mott's theory. Conversely, the FOS
calculation results after the design show a safe value, as it is above the safety
factor standard based on Mott's theory. Additionally, the calculation of the
bolt connection after the design shows an actual shear stress value of 55.992
N/mm². This value indicates that the bolt connection does not experience
damage, as it does not exceed the allowable shear stress of 90.9 N/mm²

MODIFIKASI DUDUKAN SLIP RING DAN CARBON BRUSH PADA MESIN ITL.01.TL.01

2025-04-16T14:17:27+07:00

The aim of this research is to modify the heating system of the ITL.01.TL.01
machine used in the cutting process of inner liners. The variation in inner liner
length, ranging from 73 to 78 meters, results from manual cutting using scissors
due to damage to the existing heating system. This inconsistency in inner liner
length causes issues with production efficiency and consistency, necessitating
modifications to improve machine performance. In this research, an in-depth
analysis was conducted on the causes of damage to the heating system, as well
as the design of the necessary technical modifications. This approach involves
identifying and testing the components of the heating system and implementing
changes aimed at repairing and enhancing the performance of the ITL.01.TL.01
machine. The results of these modifications are expected to provide solutions
to the problem of inconsistent inner liner length. After the modifications, the
inner liner length was successfully standardized to 76 meters. Trials conducted
showed that the modified heating system could produce more consistent cutting
and improve the machine's operational efficiency. Therefore, this research is
expected to make a significant contribution to the related industry by providing
more reliable and efficient technical solutions and reducing reliance on manual
cutting methods.

PENGENDALIAN JUMLAH TREAD LENGKET MESIN TREAD EXTRUDER MENGGUNAKAN METODE QCC

2025-04-16T13:54:48+07:00

PT. ABY is a manufacturing company specializing in tires for various vehicles
and purposes. In the tire industry, the production process involves a series of
complex stages, including the crucial extrusion process to produce tread, which
then undergoes a winding process with the application of a liner fabric. The
main issue arises when the liner fabric does not uniformly coat the tread during
the winding process. This causes treads to stick together and necessitates
rework, increasing production costs. To address this issue, the research applies
the Quality Control Circle (QCC) method to identify the root causes of
misalignment in the liner fabric positioning. Through in depth analysis, the
study successfully explores technical and operational factors influencing this
issue. The solution derived from the QCC analysis, such as the implementation
of auto-centering technology in the winding process, proves effective in
significantly reducing sticky tread issues by 73.4% over the last three months.
The implementation of QCC not only enhances production efficiency but also
improves the final product quality at PT. ABY.