交こう番ばん応おう力りょく

noun

alternating stress

Technical term in engineering and materials science for stress that cyclically changes direction or magnitude.

• 交こう番ばん応おう力りょくが繰くり返かえし加くわわると、金きん属ぞく疲ひ労ろうが生しょうじる。

  When alternating stress is repeatedly applied, metal fatigue occurs.