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Recently, smartphones are increasingly used in situation-aware applications, e.g. determining the way of transportation when an individual is going outside. However the existing methods of transportation mode classification often suffer from high computing complexity and unsatisfactory accuracy. In this paper we present EasiTMC, a two-stage hierarchical classification framework which consists of coarse-...
Compared with primer, various performance of free primer (such as, appearance performance, hardness, adhesive force, water resistance, acid & alkali resistance, oil resistance, salt mist resistance, weathering resistance) were investigated by means of experiments. The qualities of free primer are no obviously charged for the surface of existing enclosure, sill and intermediate pillar. The feasibility...
The hot-formed sheet steel is successfully applied on a vehicle by analysis of simulation test of strength, material and third point curve. The application of this material can increase not only the strength but also improve energy-absorbing efficiency. Meanwhile, the lightweight is not only achieved but also the vehicle safety crash is improved.
An application of measurement method of sound intensity is discussed from practical engineering perspective based on experimental analysis to identify the main noise source of vehicle. The 3D sound intensity charts are plotted to find the main noise source which adversely affects interior noise of a specific vehicle at idle condition. Meanwhile, the relevant components are optimized and improved in...
The corrosion state of various components was investigated to improve anti-corrosion performance of automobile by vehicle accelerated corrosion test and parts neutral salt spray test respectively. The corrosion reasons of typical parts such as galvanized bolt, galvanized pipe, painting support, constant velocity drive shaft, were analyzed in this paper. An improvement solution was presented to adopt...
The NVH material is widely used on a vehicle as one of important means to improve auto NVH performance. The composition, operational mechanism, application area and performance features of three NVH materials such as damping, strengthening and sound absorption material are discussed in this paper. Moreover, specific application of three materials is introduced in combination with some vibration-damping...
The health, comfort and safety of a passenger are closely related to the air quality in a vehicle. In this paper, the research is performed to reduce VOC pollution inside the vehicle. The influence of VOC content of parts such as rubber, plastic, foaming on interior air quality is introduced. Moreover, the VOC pollution of parts, such as weather strip, central console and seat, is analyzed and solutions...
The sample corrosion shape and appearance are compared between vehicle accelerated corrosion test and laboratory accelerated corrosion test. An equivalent relationship between laboratory accelerated corrosion and actual service condition is obtained on the basis of the research of distribution characteristics for two corrosion damage. The calculation indicates that this relationship of typical component:...
To reply with the recycling rules of the world and persistent progress of vehicle, it is necessary to develop European “RRR” type-approval. The background, content and process of proprietary brand's “RRR” type-approval were introduced. Calculation methods of recycling rate and recovery rate were also described.
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