يعرض 1,281 - 1,300 نتائج من 7,231 نتيجة بحث عن '(( significant decrease decrease ) OR ( significantly reduce decrease ))~', وقت الاستعلام: 0.31s تنقيح النتائج
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    The amplitude curve. حسب Ruocheng Zhang (20442445)

    منشور في 2024
    "…As the ultrasonic vibration frequency (20–40kHz) increases, the mechanical specific energy (MSE) initially decreases and then increases. The MSE reaches a minimum value at a frequency of 20–25 kHz, representing a decrease of 15.52%–22.24% compared with conventional rock breaking, which can significantly improve the rock breaking efficiency and reduce the drilling cost. …"
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    The stress-strain curve in rock failure process. حسب Ruocheng Zhang (20442445)

    منشور في 2024
    "…As the ultrasonic vibration frequency (20–40kHz) increases, the mechanical specific energy (MSE) initially decreases and then increases. The MSE reaches a minimum value at a frequency of 20–25 kHz, representing a decrease of 15.52%–22.24% compared with conventional rock breaking, which can significantly improve the rock breaking efficiency and reduce the drilling cost. …"
  8. 1288

    Finite element modeling of PDC cutter with rock. حسب Ruocheng Zhang (20442445)

    منشور في 2024
    "…As the ultrasonic vibration frequency (20–40kHz) increases, the mechanical specific energy (MSE) initially decreases and then increases. The MSE reaches a minimum value at a frequency of 20–25 kHz, representing a decrease of 15.52%–22.24% compared with conventional rock breaking, which can significantly improve the rock breaking efficiency and reduce the drilling cost. …"
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