Abstract
This study focuses on the deformation behavior of tread blocks and investigates its effect on tire road noise. Specifically, the strain, acceleration, and direct sound of individual tread blocks were measured and compared with the frequency response of tire road noise. Measurements were made by measuring the strain of the tread blocks using an image processing with a sequential phase-shift stroboscope, and by directly attaching compact-typed accelerator and microphone meters to the tread blocks to measure the acceleration and ambient sound field of the tread blocks themselves. The results obtained suggest that although the tread blocks are a source of vibration, the generation of tire road noise is not dependent on the vibration characteristics of the blocks alone.
