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Journal : Jurnal Polimesin

Ergonomic redesign of transportation fleet driver seats using anthropometric approaches to minimize musculoskeletal disorders Andriani, Meri; Hamdani, Hamdani; Aziza, Nanda Saleysia
Jurnal Polimesin Vol 23, No 2 (2025): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i2.4199

Abstract

The operation of public transportation fleets demands competent drivers to ensure passenger safety and operational reliability. Maintaining an optimal driving posture is a critical factor in supporting driver performance; however, mismatches between seat design and driver anthropometry can result in musculoskeletal disorders (MSDs), reducing driver focus and increasing the risk of traffic accidents. This study aims to determine the ergonomic dimensions of driver seats based on anthropometric data. The methodology integrates anthropometric measurements, percentile analysis, statistical validation, and ergonomic modeling utilizing CATIA software. Key anthropometric dimensions considered include sitting upright height (TDT), chin-to-top-of-head distance (DPK), shoulder width (LB), popliteal-buttock length (PPO), popliteal height (TPO), thigh thickness (TP), and hip width (LP). Data uniformity and adequacy tests confirmed the reliability of the dataset, while normality tests verified that the measurements were normally distributed. Subsequent analysis applied the 50th and 95th percentile values to guide design decisions, ensuring broad user accommodation. Ergonomic modeling was conducted using CATIA software to develop an optimized driver's seat. The resulting design specifications include a seat base height of 92.63 cm, headrest height of 21.7 cm, seat width of 62 cm, seat base length of 46.90 cm, seat height from the floor of 44.00 cm, seat base thickness of 15.07 cm, and seat base width of 38.33 cm. These dimensions are intended to support optimal driver posture, reduce the incidence of MSDs, and enhance overall driving safety and comfort in public transportation fleets.
Redesign of Rice Planting Tools Using an Ergonomics Approach Andriani, Meri; Irwanda, Muhammad Fanny; Nadya, Yusri
Jurnal Polimesin Vol 22, No 1 (2024): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i1.4200

Abstract

Farmers' work in planting rice is always with a bent posture, causing complaints of musculoskeletal disorders, this is a problem in research. The aim of the research is to identify farmers' complaints of musculoskeletal disorders when planting rice and determine the size of ergonomic tools. The method used is standard Nordic questionnaires to determine the point of complaint among farmers, anthropometry and percentiles are used to design the tool. Statistical tests are used to see valid, uniform, and normal data. Results and discussion, in the standard Nordiq questionnaire, it was found that farmers experienced more than 50% complaints of severe pain in the waist, left calf, right calf, left ankle, right ankle, left foot, and right foot. The design uses eight anthropometric dimensions: standing elbow height, palm length, palm width, middle finger length, shoulder width, body thickness, upper arm length, and hand length. All anthropometric dimensions were declared uniform, in the data adequacy test they were declared valid, and in the normality test, all data were declared normally distributed. The 5th percentile is used for the dimensions of shoulder width, standing elbow height, and palm length, and the 95th percentile is used for the dimensions of palm width, middle finger length, body thickness, upper arm length, and hand length.In conclusion, complaints of musculoskeletal disorders were identified as very painful, located at the point of complaint of the waist. The rice planting tool has ergonomic dimensions, the height of the tool is 88.1 cm, the diameter of the tool handle is 8.13 cm, the length of the handle is 11.4 cm, and the distance between the handle and the brake is 9.32 cm. The dimensions of the rice seed bag are 33.70 cm wide, the distance between the front and back of the bag is 23.19 cm, the bag height is 35.64 cm, and the bag length is 20.5 cm.