The concept of determining the residual life of vehicle assemblies and components

Determining the residual life of vehicle assemblies and components is necessary to solve current problems of automobile transport: transition to maintenance (MOT) based on technical condition, development of a built-in diagnostic system, remote monitoring of the technical condition of vehicles. The improved design and high level of quality of modern cars would allow maintenance to be carried out more frequently than required by regulations. However, in order to make a decision on increasing the frequency, it is necessary to assess the actual technical condition of units and components and predict their residual life. Work is underway in the domestic automotive industry and abroad to create unmanned vehicles. In the absence of a driver, technical condition monitoring can only be performed using the built-in diagnostic system. The system must warn about the approaching limit state and take appropriate measures to prevent an emergency. The embedded system should be based on determining the current technical condition and estimating the remaining life using diagnostic parameters. One of the important tasks when assessing the technical condition and determining the residual life is to establish the relationship between structural and diagnostic parameters

Reducing the severity of a traffic accident

Improving the system of preventive measures aimed at reducing the severity of road accidents is an urgent task. Mortality on roads is constantly increasing and it is necessary to ensure an integrated approach to creating safe road conditions. The purpose of this study is to analyze the promising designs of guardrails designed to prevent uncontrolled exit of vehicles from the roadway and the development of crash cushions. Guardrails should not only be safe for road users, but should also ensure their safety, as well as preserve the elements after crashing it. Conducted analytical studies have shown that to reduce the mechanical damage to vehicles and reduce the severity of injuries to the driver and passengers, it is necessary to develop guardrails that allows capturing shock energy at the moment of contact between the car and the guardrails. The considered design of the crash cushion provides a damping effect when the car crashes the guardrails and at the same time limit the ability to move its elements relative to the original position. This is achieved by using several materials with different strength characteristics in the design of the guardrails, which contributes to its gradual destruction in several stages and smooth energy dissipation

Reducing the severity of a traffic accident

Improving the system of preventive measures aimed at reducing the severity of road accidents is an urgent task. Mortality on roads is constantly increasing and it is necessary to ensure an integrated approach to creating safe road conditions. The purpose of this study is to analyze the promising designs of guardrails designed to prevent uncontrolled exit of vehicles from the roadway and the development of crash cushions. Guardrails should not only be safe for road users, but should also ensure their safety, as well as preserve the elements after crashing it. Conducted analytical studies have shown that to reduce the mechanical damage to vehicles and reduce the severity of injuries to the driver and passengers, it is necessary to develop guardrails that allows capturing shock energy at the moment of contact between the car and the guardrails. The considered design of the crash cushion provides a damping effect when the car crashes the guardrails and at the same time limit the ability to move its elements relative to the original position. This is achieved by using several materials with different strength characteristics in the design of the guardrails, which contributes to its gradual destruction in several stages and smooth energy dissipation.</jats:p