• bucket wheel failure caused by residual stresses in welded joints

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 631
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
      cracks in the welded joints on the bucket wheel (bw) body of the bucket wheel excavator (bwe) srs 1300 were discovered after merely 1800 h of operation. investigations are carried out in order to detect the causes of cracks occurrence and thus prevent possible heavy damages to the machine. working stresses in the bw body are defined by using fem. methods of strain gauges are used for the experimental stress analysis in real working conditions. measurements of welding residual stresses are carried out by applying the centre hole drilling method. additionally, experimental investigations defined the chemical composition, tensile properties, hardness, impact toughness, as well as the susceptibility to cracking (measurement of residual hydrogen, fisco, tekken and cts methods).

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