fatigue cracks propagationとは 意味・読み方・使い方

To provide a steel sheet excellent in characteristics of stopping initiation of fatigue crack and characteristics of stopping propagation thereof which, when undergoing joint welding, provides the satisfactory shape of a toe-of-weld part in a bead cross-section and hardly initiates fatigue cracks and even if fatigue cracks is initiated, exhibits a long propagation life until the fatigue crack induces a fracture.例文帳に追加

継手溶接を行った場合に、ビード断面における止端部の形状が良好で疲労き裂が発生し難く、またたとえ疲労き裂が発生したとしても破断に到るまでの伝播寿命が長い、疲労き裂の発生阻止特性と伝播阻止特性の両者に優れた鋼材を提供する。 - 特許庁

To provide a steel sheet excellent in fatigue crack resisting performance, having enhanced resistance to propagation of cracks inherent in a weld zone of a welded structure or the like, the propagation occurring caused by repeated stress applied to the cracks, and to provide a production method thereof.例文帳に追加

溶接構造物等の溶接部等に内在するき裂が繰り返し応力を受けて進展することに対する抵抗性を高めた耐疲労破壊性能に優れた鋼板とその製造方法の提供。 - 特許庁

By the addition of 0.05 to 1.0 wt.% Co to an Sn-Cu solder alloy, even when a load caused by a temperature change is applied to a soldering part, Co forms fine alloy grains in the Sn-Cu solder alloy, and the grains are scattered thereover, so that the propagation of cracks is disturbed, and its thermal fatigue characteristics are improved.例文帳に追加

Ｓｎ−Ｃｕ半田合金にＣｏが０．０５〜１．０重量％添加されることで、半田付け部に温度変化による負荷が掛かっても、ＣｏがＳｎ−Ｃｕ半田合金中で微小な合金粒を形成し点在することによりクラックの進展を妨げ、熱疲労特性が改善される。 - 特許庁