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All Journal JISI UMJ (Jurnal Integrasi Sistem Industri UMJ) INVENTORY : Industrial Vocational E-Journal On Agroindustry
Jaqin , Choesnul
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Control & Systems Engineering Engineering Industrial & Manufacturing Engineering

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Analisis Kualitas Pelayanan Berbasis Preferensi Konsumen: Studi Kasus Pada Bengkel Kendaraan Roda Empat Purba, Humiras Hardi; Debora, Fransisca; Sitorus, Tosty Maylangi; Aisyah , Siti; Jaqin , Choesnul
INVENTORY: Industrial Vocational E-Journal On Agroindustry Vol. 3 No. 2 (2022)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/inventory.v3i2.95

Abstract

Product and service quality factors are important aspects of business continuity. Consumers will abandon low-quality products and services. Consumers will feel satisfied if all aspects of the products and services are appropriately accommodated. Product and service quality have different tendencies because service quality dimensions are more complex than product quality. This study aims to analyze the quality of customer service at auto repair shops based on consumer preferences. Assessment of the level of satisfaction and consumer expectations of each attribute is done by filling out a questionnaire to identify the gap between the level of importance and level of performance. The consumer's assessment of each indicator of the auto repair shop is carried out through a questionnaire filled out to the consumer to find out the gap between the level of importance and the level of performance. The analytical method used is Importance Performance Analysis–IPA showing that the attributes of auto repair shops that need to be improved are [P1] improving the repair period as promised, [P2] Procedures and managerial capabilities in providing adequate service, [P3] Results following consumer recommendations, and [P4] Knowledgeable workshop managers and staff, [P5] Service speed from responsiveness quality dimensions, [P11] Credibility and honesty of workshop managers and staff, [P12] Clarity of communication and information to consumers. The priority of quality attributes of auto repair shops that will be improved can provide alternative development priorities between human resources and limited equipment servicing.
Analisis Peningkatan Kualitas Produk Case ECU dengan Menggunakan Metode DMAIC dan QFD pada Industri Manufacturing Die Casting S, Suhaeri; Jaqin , Choesnul
JISI: Jurnal Integrasi Sistem Industri Vol. 13 No. 1 (2026): JISI UMJ
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jisi.13.1.123-136

Abstract

Industri otomotif, khususnya pada sektor kendaraan bermotor roda dua mengalami pertumbuhan signifikan yang mendorong meningkatnya kebutuhan terhadap komponen elektronik seperti casing ECU (Electronic Control Unit). Proses produksi casing ECU (Electronic Control Unit) melalui metode die casting berbahan aluminium sangat krusial karena dituntut menghasilkan produk yang presisi dan minim cacat. Penelitian ini bertujuan untuk mengidentifikasi dan memperbaiki jenis cacat tertinggi menggunakan metode DMAIC (Define, Measure, Analyze, Improve, Control) yang diintegrasikan dengan QFD (Quality Function Deployment). Berdasarkan data, tiga jenis cacat terbesar ditemukan yaitu porosity gate sebesar 51,18% (47.545 pcs), flowline sebesar 31,11% (28.904 pcs), dan cold shut sebesar 11,43% (10.618 pcs). Fokus perbaikan ditujukan pada porosity gate sebagai cacat dengan persentase tertinggi. Hasil analisis House of Quality menghasilkan enam prioritas perbaikan, yaitu penambahan pengecekan visual gate (75,83), metode deteksi burr area gate lebih optimal (75,23), optimasi titik spray (70,90), kontrol posisi tube spray saat running (57,70), peningkatan periode training operator (35,63), dan evaluasi hasil training (26,70). Korelasi positif kuat ditemukan pada pengecekan visual gate dan metode deteksi burr dengan kontribusi masing-masing sebesar 22,2% dan 22,0%. Setelah perbaikan, nilai DPMO (Defect Per Million Opportunities) menurun dari 14.592 menjadi 4.871, dan nilai sigma meningkat dari 3,68 menjadi 4,08. Hasil ini menunjukkan bahwa integrasi metode DMAIC (Define, Measure, Analyze, Improve, Control) dan QFD (Quality Function Deployment) mampu menurunkan tingkat cacat dan meningkatkan kualitas produksi casing ECU (Electronic Control Unit).
Co-Authors Aisyah , Siti Fransisca Debora Humiras Hardi Purba S, Suhaeri Tosty Maylangi Sitorus, Tosty Maylangi