Vehicle Vibration in Human Health

Abstract

Fast development of technology over the last decades has contributed to the adverse effects that may affect human health (both physical and mental). Such negative effects may include noise and vibration. These phenomena are accompanied by most of the technological processes. Need for more efficient and productive processes is causing rising trend in intensifying of these phenomena. It is unavoidable to increase efficiency without increasing the operating speed of machinery and equipment. The main goal of this paper is to carry out NVH (noise, vibration and harshness) analysis of engines; compression-ignition engine (diesel) and spark-ignition engine (gasoline) equipped in the same type of vehicle. But purpose is laying on presented methodology, not results of researches (but of course it will be presented too) which often (mainly) is made for failure detections. This paper will also cover influence of the engine mounting on generated acoustic vibrations followed by comparative NVH analysis of states occurring in diesel and gasoline engine. Scope of the work: a) theoretical introduction, b) presentation of vibration measurement (using LDV: Laser Doppler Vibrometry), c) NVH analysis in two types of engines, d) comparison of results, e) conclusions.

Investigating the Impact of Carbon Fiber as a Wheelchair Frame Material on Its Ability to Dissipate Kinetic Energy and Reduce Vibrations

“…These impulses cause short-term and sudden accelerations affecting the body and internal organs [10,11]. Human body vibrations are an unfavorable phenomenon that deteriorates the quality of wheelchair use and poses a risk to its user's health [12][13][14][15]. Therefore, the need to achieve the ability to dampen wheelchair vibrations that occur during driving is justified.…”

Development of Machine Learning Based Control System for Vehicle Active Suspension System

“…The road irregularities that affect passenger comfort are one of the main sources of vibration in vehicles. Vehicle vibrations and undesirable noise have negative effects on human health, especially on the spinal cord and nervous systems [1]. Therefore, the improvement in road comfort is very important, and it is possible by designing active vehicle suspension systems (AVSS).…”

Research on Cab Vibration Control Based on Parameter Hierarchical Interaction Model

“…Longterm and continuous strong vibrations are also likely to affect the driver's physical and mental health and evaluation of the driving state of the car body. is might lead to traffic accidents [4][5][6]. erefore, the research on vibration control of heavy commercial vehicle cabs is important for the engineering application prospect in today's logistics and highspeed era.…”