Usulan Redesain Struktur Meja Operasi Berbasis Design For Reliability

Afzalurrahman, Fahrizal (2026) Usulan Redesain Struktur Meja Operasi Berbasis Design For Reliability. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Meja operasi menopang tubuh pasien selama tindakan bedah, sehingga kegagalan strukturalnya berpotensi menimbulkan konsekuensi fatal seperti pasien jatuh dan cedera saraf. Studi pendahuluan pada Fasilitas Kesehatan Tingkat Pertama (FKTP) menemukan degradasi mekanis prematur berupa ketidakstabilan pada meja operasi, gejala lemahnya kekakuan struktur dan keausan permukaan kontak. Prototipe meja operasi FKTP tim HETI ADB ITS berisiko serupa karena perancangannya belum menyertakan evaluasi keandalan sejak fase desain. Penelitian ini menerapkan Design for Reliability (DfR) untuk mengevaluasi dan merancang ulang struktur prototipe tersebut. Evaluasi memadukan Finite Element Analysis (FEA) untuk menguji kekuatan statis, kekakuan, dan umur lelah sesuai SNI IEC 60601-2-46:2016; Design Failure Mode and Effects Analysis (DFMEA) dengan skor Occurrence diturunkan dari keluaran umur lelah terhadap target 29.200 siklus (lima tahun, KMK Nomor 295/KM.6/2019); dan diagram Pareto untuk memprioritaskan mode kegagalan. Struktur eksisting terbukti aman secara statis (Minimum Factor of Safety 5,24) tetapi lemah pada kekakuan, dengan displacement 3,545 mm. Redesain menaikkan Minimum Factor of Safety menjadi 11,1 (naik 111,83%), menurunkan displacement menjadi 1 mm (turun 71,79%), membawa umur lelah seluruh komponen ke batas cut-off simulasi 5 × 10⁸ siklus, menurunkan RPN kritis 37,50%, dan menghemat biaya material 22,08%.
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An operating table supports the patient’s body during surgery, so structural failure can cause fatal consequences such as patient falls and nerve injury. A preliminary study at primary healthcare facilities (FKTP) found premature degradation: instability in the operating table, indicating insufficient stiffness and contact-surface wear. The HETI ADB ITS team’s FKTP operating table prototype faces the same risk because its design process included no reliability evaluation. This study applies Design for Reliability (DfR) to evaluate and redesign that structure. The evaluation integrates Finite Element Analysis (FEA) to assess static strength, stiffness, and fatigue life under SNI IEC 60601-2-46:2016; Design Failure Mode and Effects Analysis (DFMEA), with Occurrence scores derived from fatigue life against a 29,200-cycle target (five years, Ministerial Decree No. 295/KM.6/2019); and a Pareto diagram to prioritise failure modes. The existing structure proves statically safe (Minimum Factor of Safety 5.24) but deficient in stiffness: displacement of 3.545 mm. The redesign raises the Minimum Factor of Safety to 11.1 (+111.83%), reduces displacement to 1 mm (−71.79%), brings the fatigue life of all components to the 5 × 10⁸-cycle simulation cut-off, lowers the critical RPN by 37.50%, and saves 22.08% in material cost.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Design for Reliability, DFMEA, Finite Element Analysis, Keandalan Struktural, Meja Operasi, Design for Reliability, DFMEA, Finite Element Analysis, Operating Table, Structural Reliability
Subjects:	T Technology > TS Manufactures > TS170 New products. Product Development
Divisions:	Faculty of Industrial Technology > Industrial Engineering > 26201-(S1) Undergraduate Thesis
Depositing User:	Fahrizal Afzalurrahman
Date Deposited:	01 Aug 2026 04:29
Last Modified:	01 Aug 2026 04:29
URI:	http://repository.its.ac.id/id/eprint/141737

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