98%
921
2 minutes
20
This study investigated the effects of non-driving related tasks (NDRTs) and seat back angles (SBAs) on preferred seat parameters and seating discomfort in highly automated vehicles. Using a static, reconfigurable experimental seat, 32 participants self-selected preferred seat parameters for four tasks with varying vision demands (relaxing, looking forward, working on a laptop, watching a tablet video) at three SBAs: 20°, 40° and 60°. Results show that SBA influenced all self-selected seat parameters, while task only affected those related to the headrest. Fore-aft headrest adjustability is necessary to support different NDRTs, particularly in reclined postures. Upright and moderately reclined positions were preferred for downward-looking tasks like laptop or tablet use, while more reclined positions were better suited for relaxing without visual demand. The findings also highlight the importance of suitable support for tablet use to reduce discomfort. They could be useful for seat and vehicle interior design in future automated vehicles.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1080/00140139.2025.2551220 | DOI Listing |
Sci Rep
September 2025
Viet Tri University of Industry, Viet Tri City, 35100, Vietnam.
The tracked vehicle (TV) primarily operates on poor road surfaces, which means the vibration excitation of the road surface significantly impacts the driver's sighting efficiency and driving comfort. This is the cause of reduced vehicle combat efficiency. To address this, based on the dynamic interaction model between the TV, Seat, and Driver established in Matlab/Simulink software, all the dynamic parameters of the suspension system of the TV and seat are then simulated under different operation conditions of the TV.
View Article and Find Full Text PDFTraffic Inj Prev
September 2025
Department of Biomedical Engineering, Medical College of Wisconsin, Milwaukee, Wisconsin.
Objective: Assessment of submarining occurrence in PMHS (Post-Mortem Human Subject) testing can be challenging, particularly for obese PMHS. This study investigates varied kinetic and kinematic response parameters as potential indicators of submarining. Data from 36 whole-body PMHS frontal sled tests conducted under varying boundary conditions were analyzed, incorporating three spring-controlled seat configurations, two extreme anthropometric profiles, two crash pulses, and two seatback angles.
View Article and Find Full Text PDFErgonomics
September 2025
Groupe Stellantis, Vélizy-Villacoublay, France.
This study investigated the effects of non-driving related tasks (NDRTs) and seat back angles (SBAs) on preferred seat parameters and seating discomfort in highly automated vehicles. Using a static, reconfigurable experimental seat, 32 participants self-selected preferred seat parameters for four tasks with varying vision demands (relaxing, looking forward, working on a laptop, watching a tablet video) at three SBAs: 20°, 40° and 60°. Results show that SBA influenced all self-selected seat parameters, while task only affected those related to the headrest.
View Article and Find Full Text PDFSensors (Basel)
July 2025
School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China.
As the core device for protecting the safety of the pressure-bearing system, the spring full-open safety valve is prone to various forms of valve seat sealing surface damage after long-term opening and closing impact, corrosion, and medium erosion, which may lead to internal leakage. In view of the problems that the high-frequency acoustic emission signal of the internal leakage of the safety valve has, namely, a large number of energy-overlapping areas in the frequency domain, the overall signal presents broadband characteristics, large noise content, and no obvious time-frequency characteristics. A composite denoising method, IWTD, improved wavelet threshold function with dual adjustable factors, and the improved VMD algorithm is proposed.
View Article and Find Full Text PDFMaterials (Basel)
July 2025
Department of Energy Engineering, Zhejiang University, Hangzhou 310027, China.
Polyurethane foam is widely used as a primary filling material in car seats. While it provides good damping and energy absorption, the mechanical properties are complex but play a vital role in vibration attenuation and vehicle ride comfort. This study proposes a comprehensive experimental and analytical method to characterize the visco-hyperelastic properties of seat-grade polyurethane foam.
View Article and Find Full Text PDF