Analisis Keandalan Sub Komponen Drive Shaft Unit Dump Truck Menggunakan Uji Korelasi dan Weibull Analysis

Alfian Amanu Rafi, Dr.Eng. Agustinus Winarno, S.T., M.Eng.

2026 | Tugas Akhir | D4 TEKNIK PENGELOLAAN DAN PERAWATAN ALAT BERAT

Drive Shaft tercatat sebagai komponen sistem pemindah daya dengan kerusakan tertinggi (36,9%) pada armada dump truck PT Samudera Mulia Abadi. Melalui analisis Pareto bertingkat, bolt teridentifikasi sebagai sub-komponen paling kritis penyumbang 42,2% kegagalan drive shaft. Penelitian ini bertujuan mengevaluasi keandalan, korelasi kerusakan antar-komponen, serta menentukan interval perawatan optimal. Berdasarkan uji korelasi spearman, frekuensi kerusakan bolt berkorelasi kuat dengan total kerusakan drive shaft (? = 0,792; p < 0>bearing dan tidak signifikan pada u-joint maupun yoke. Analisis distribusi weibull (metode MLE) pada 104 data Time To Failure (TTF) menghasilkan parameter Shape (?) = 0,730 dan MTTF 1.597,86 jam. Nilai ? < 1>infant mortality, mengindikasikan bahwa akar masalah terletak pada kualitas retorque saat perbaikan, bukan pada keausan material. Berdasarkan analisis B-life, direkomendasikan interval inspeksi/retorque bolt setiap 60 jam operasi (B10). Seluruh hasil komputasi ini telah diverifikasi keakuratannya dan identik dengan hasil keluaran Minitab.

The Drive Shaft was recorded as the power train component with the highest failure rate (36.9%) in the dump truck fleet at PT Samudera Mulia Abadi. Through a multi-level Pareto analysis, the bolt was identified as the most critical sub-component, contributing to 42.2% of the total Drive Shaft failures. This study aims to evaluate the component's reliability, analyze the damage correlation between sub-components, and determine the optimal maintenance interval. Based on the Spearman correlation test, the failure frequency of the bolt highly correlates with the total Drive Shaft failures (? = 0.792; p < 0 xss=removed>The Drive Shaft was recorded as the power train component with the highest failure rate (36.9%) in the dump truck fleet at PT Samudera Mulia Abadi. Through a multi-level Pareto analysis, the bolt was identified as the most critical sub-component, contributing to 42.2% of the total Drive Shaft failures. This study aims to evaluate the component's reliability, analyze the damage correlation between sub-components, and determine the optimal maintenance interval. Based on the Spearman correlation test, the failure frequency of the bolt highly correlates with the total Drive Shaft failures (? = 0.792; p < 0>

Kata Kunci : Drive Shaft, Bolt, keandalan, korelasi Spearman, distribusi Weibull, interval maintenance