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Ultrasonic testing formulas railway tires

sLIUXian (HudongPowerLocomotiveDepot,[link widoczny dla zalogowanych], DatongShanxi037300, China) Key words: TG115.28 Document code: B Article ID :1000 -6656 (2005) 06-0335-01 motorcycle tires to testing, the probe according to the old and new elections, the new system tire choice twins,[link widoczny dla zalogowanych], wide selection of existing tires, twin school test block zero defects difficult to find the radial, circumferential defect Obviously, testing go first to the end of wave coupling, the same material are not so good, no defects in the bottom sheet wave point-like defects in three waves, \waveform discrimination is the key; the end of wave no major defects; such defects best contract; sometimes hard to find flaws wave; usually things are slag; waveform is not high wave root diameter; dissected open to tell; Received date: 2005 - 03-03 Note; 1) The three waves that began wave, defect wave and the end of wave. white cracks are rare, pressure rolling defects in the outer hoop defects new law is a wide-angle shear wave probe, localization and quantification is not relied on, the probe moves a span, radial defects against large, full-wave longitudinal wave inspection, defect rim bad check, circumferential defects can also search,[link widoczny dla zalogowanych], the most common words first wave, ring parts difficult to find, in the repair of new bands with twins, there the defect is dangerous, all kinds of defects on experience,[link widoczny dla zalogowanych], (on the next 323 pages) 3 Conclusion imposed by the other steel in the case of uniform magnetic field in the magnetic field generated by the formula back to improve the application Matlab simulation software, the more successful through the curve 9718 engine parts shown in different parts of the demagnetization field distribution. studies show that the top and bottom parts, and the interface between various parts of the larger magnetic field strength at the back, in a continuous surface between the back part of both ends of the magnetic field strength is almost zero. The simulation results of magnetic particle inspection of the parts has a certain significance: (1) longitudinal magnetization, the upper and lower face edges, and each part on connection with the external magnetic field parallel to the edges and away from the magnetic field on the source close to the hierarchical Results scar on the surface; ultrasound it can not; ultrasonic magnetic particle can be found; specifically looking for defects in the radial wave; in-service tire coarse scanning; defect detection depends on it; if found to be large; a sound way to verify; secondary sound path found it; key area; wave height from the big wave; joint welding between large; in service had to use wide-angle; lateral magnetic experience needed; determine the accuracy to ensure safety. part of a larger magnetic field strength back. (2) the direction of the demagnetization field and the applied magnetic field in the opposite direction, the greater the measured demagnetization field magnetic field strength is smaller. So, Ruoyi proved a big part of the overall demagnetization field magnetic field strength and other parts of the same or larger, you can conclude that there is here defects. References: [1] Chinese Mechanical Engineering Society Society for Nondestructive Testing. particle testing [M3. Beijing: Mechanical Industry Press, 1987.E27 Wei-Chang Zhong. horizontal magnetic dipole chain exclusion EJ7. nondestructive testing, 2003,25 ( 9) :454-457. [3] Wei-Chang Zhong. square steel back steady state longitudinal magnetization magnetic field [J]. nondestructive testing, 2001,23 (3) :108-111. plus Dian 6 capsule in capsular sac 335 270

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