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New test methods for off-the-road tires from the tire manufacturer Bridgestone
Mechanically heavy-duty vehicle components such as tires are a permanent issue for quality control and research and development. The tire manufacturer Bridgestone in Hofu (Yamaguchi Prefecture in southwestern Japan) has developed new test methods to meet the growing performance requirements of extremely large off-the-road tires for use in construction and mining vehicles.
Huge dump trucks, such as the Komatsu 960E-1K, can transport more than 300 tons of mined rock. The strain on these 2-meter high tires is extremely high as they traverse rocky paths for several hours a day. The stress tests carried out at different production sites of Bridgestone consist of thermographic inspections of different layers of the tire. Numerous holes in the tire enable the control measures of the tire interior. Audits focus on the peripheral structures of the tire.
To obtain the most accurate measurements at different speeds, a thermal imaging camera with an interface for precise external control is required. The high-end camera ImageIR® 8325 by InfraTec collects data with a thermal sensitivity of 20 mK, thanks to its high-precision triggering, very short integration times in the microsecond range and extremely high frame rates. Equipped with durable coolers with an average service life of exceeding 10,000 hours, monitoring processes are performed for extensive testing phases.
Due to the efficient use and excellent performance of low maintenance and stable ImageIR® cameras in their current test facility, Bridgestone is committed to using these instruments in the future as an integral part of other projects. InfraTec‘s Japanese partners for IR systems have developed a complete turnkey solution for long-term and automated test sequence with constant, exact thermography measurements.
With the friendly support of Bridgestone; abbreviated text version.