裂纹扩展指材料在外界因素作用下裂纹成核、生长的动态过程。裂纹扩展研究源于上世纪30年代格里菲斯（Griffich）断裂理论。
应力比和频率对腐蚀疲劳裂纹扩展的影响 - 中南大学学报（自然科学版、英文版） 关键字: 腐蚀疲劳； 裂纹扩展； 寿命估算[gap=720]Key words: corrosion fatigue； crack propagation； life estimate
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...合物 裂纹扩展[gap=1339]e welding ; stainless steel/aluminum dissimilar metal; intermetallic compounds ; crack expanding...
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快速裂纹扩展 RCP
裂纹扩展速率 [力] crack growth rate ; fatigue crack growth rate ; crackle expanding speed
稳定裂纹扩展 [力] stable crack growth ; Stable crack extension
亚临界裂纹扩展 [力] subcritical crack growth ; subcritical crack propagation
定常裂纹扩展 [力] steady crack growth
裂纹扩展应变计 crack propagation strain gauge
裂纹扩展力 [力] crack extension force
疲劳裂纹扩展 FCP ; FCG
裂纹扩展速度 crack speed ; fracture speed ; crack propagation velocity ; crack growth rate
. The result of research enriches the trial method, get the fatigue crack growth laws of four kinds of pressure vessel materials at high temperature. Provide a kind of numeric method.
本文的研究结果，丰富了试验方法;得到四种压力容器材料的高温疲劳裂纹扩展规律;对疲劳裂纹扩展路径判定提供一种计算机方法。
参考来源 - 典型钢种高温疲劳裂纹扩展规律的试验研究与计算机模拟The purpose of Controlled Blasting Engineering is study the directed fracture of rock and the crack expansion.
工程控制爆破 ,要研究岩石的定向断裂的裂纹扩展。
参考来源 - 岩石断裂控制爆破的裂纹扩展Both the Jfarep-integral crack growth resistance and energy dissipation rate resistance are evaluated theoretically and numerically.
从理论分析和数值模拟两方面评价了Jfarep-积分裂纹扩展阻力和能量耗散率扩展阻力Γ（Δa ）。
参考来源 - 基于JThe researches of fatigue crack propagation based on dissipated energy density are more significative.
本文提出了以耗散能密度作为参数来描述疲劳裂纹扩展。
参考来源 - 疲劳寿命预测若干方法的研究Based on the finite element analysis and the multi-axial fatigue damage, the three-dimensional characteristics of crack initiation and the evolution of crack profile under mode I constant amplitude loading is explained reasonably.
基于有限元分析与多轴疲劳损伤概念,合理解释Ⅰ型常幅加载裂纹启裂三维特性及裂纹扩展形貌演化规律。
参考来源 - 16MnR钢疲劳裂纹扩展形貌和扩展路径的试验研究与数值模拟Also,the atoms' displacements and bond stretching strain indicate that the scale effect and the material damage exist around the tip of a crack before crack extension.
另外,所得的原子位移和键长应变也表明,不但裂纹尖端断裂性质的研究必须考虑从宏观描述到微观描述相互转化的尺度效应,而且在裂纹扩展之前的裂纹尖端附近存在宏观连续介质力学所关注的损伤区。
参考来源 - 石墨层σ键与裂纹扩展的关系研究和预测Fatigue analysis covers three side : total life analysis、crack grown and crack expansion. At last an improving method is given by the analysis of track base as well as the life data.
疲劳分析综合了全寿命分析、裂纹萌生分析和裂纹扩展分析三个方面,最终给出了轨座相关的寿命数据,并根据分析结果提出了改进意见。
参考来源 - 采煤刮板输送机轨座的疲劳分析Combining of fracture mechanics and finite element method has provided effective way for resolving the crack expanding problem of the asphalt pavements.
断裂力学和有限元方法的结合为解决沥青路面裂纹扩展问题提供了有效的办法。
参考来源 - 沥青路面裂纹扩展数值与试验研究The crack extension is simulated, and the stress distribution of the tip of cracks is determined. Furthermore, the size of critical cracks is calculated, the fatigue life is calculated and the safety capability is evaluated.
应用有限元软件ANSYS来模拟裂纹扩展,得到裂纹尖端应力分布情况等,进而确定临界裂纹的大小,最后计算嫩江钢桥的剩余寿命以及对其使用安全进行评估。
参考来源 - 公路钢桁桥安全性能评估研究·2,447,543篇论文数据，部分数据来源于NoteExpress
借用损伤机制描述裂纹扩展规律。
The crack propagation law is described using damage mechanism.
本试验也得到了材料的裂纹扩展速度和撕裂模量。
Crack speed and tearing modules for the material are also obtained.
通过快速裂纹扩展发生断裂，没有明显的宏观变形。
Brittle fracture. Fracture that occurs by rapid crack propagation and without appreciable macroscopic deformation.
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