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- Keywords blasting loading;dynamic caustics;stress intensity factor;crack extension regularity; 爆炸加载;动态焦散线;应力强度因子;裂纹扩展规律;
- crack extension regularity 裂纹扩展规律
- No evidence of fatigue crack extension was detected in the silver Memorial Bridge nor the Fremont Bridge. 在西尔费纪念桥和弗里蒙特桥都没有检查出疲劳裂纹扩展的证据。
- Some crack extension probably developed from the unfused section of the butt weld across the thickness of the stiffener during transport and erection. 有些裂纹可能在运输和安装过程中就从加劲肋对接焊未熔透处开始发展。
- The specimens were found to emit strongly above a 35dB threshold when stable crack extension started at K 1C. 稳态裂纹扩展起始于K1C并发射出许多幅值超过阈值 35dB的信号。
- Fracture toughness (Kc).Critical value of the stress intensity factor for which crack extension occurs. 断裂韧度(Kc)：发生裂纹扩展时应力强度因子的临界值。
- The study shows that the effects of stacking sequence are significant on crack origination, crack extension rate, fracture toughness and crack density. 研究发现不同铺层顺序不仅影响基体裂纹的起始载荷、扩展速率、断裂韧性，也将对基体裂纹的饱和裂纹密度产生极大的影响。
- Under static force,this paper studies the influence of the stacking sequence on the crack origination and crack extension of the modified BMI -DPA matrix material. 本文以自制的烯丙基双酚A改性双马树脂 (BMI DPA)为基体材料 ,采用无切口矩形试件 ,研究静载下铺层顺序对基体裂纹的起始及裂纹扩展的影响。
- To study the mechanism of crack extension by hyduaulic fracturing,the mass hyduaulic fracturing experiments are carried out in granodiorite at Fangshan District,Beijing,China. 水压致裂测试技术起源于石油的增产,现已发展成为测量地壳应力的一种有效方法。
- Based on the boundary variational theorem, the energy release quantity and energy release rate(dynamical crack extension force)along the crack boundary are obtained. 由此求得动态裂纹扩展时，沿裂纹边界的能量释放量和能量释放率(动态裂纹扩展力)。
- To study the mechanism of crack extension by hyduaulic fracturing, the mass hyduaulic fracturing experiments are carried out in granodiorite at Fangshan District, Beijing, China. 为研究水压致裂过程中裂缝的扩展机制，在北京市房山区花岗岩体中开展大流量水压致裂试验。
- The stress corrosion mechanism in mixed solutions was studied based on the metallographic observations of scanning fracture shapes and crack extension direction. 根据扫描断口形貌和裂纹扩展途径的金相观察,还探讨了在混合溶液中的应力腐蚀机制。
- In order to study the mechanism of crack extension by hyduaulic fracturing, the mass hyduaulic fracturing experiments were carried out in granodiorite rockmass at Fangsan, Beijing, China. 为了研究水压致裂过程中裂缝的扩展机制,在北京房山花岗岩体中开展了大型水压致裂试验。
- The crack growth rate without the influence of crack surface contact was determined by extrapolating the relationship between the crack growth rate and the crack extension to the zero crack length. 通过外插裂纹扩展速率与裂纹长度之间的关系, 可近似得到裂纹长度为零时无裂纹面滑移接触影响的裂纹扩展速率。
- With the increase of crystallinity , the crack initialing energy tends to growth, the crack extension energy tend to decreasing, the fractal dimension on impact fracture surface decrease. 分子量分布宽度的变化对各晶面法向晶粒尺寸的大小基本无影响。
- Crack Extension Resistance Curve of Concrete 混凝土裂缝扩展阻力曲线
- Nonlinear Analysis on the Crack Extension (Par One) 非线性裂纹扩展分析(一)
- They meet with great regularity. 他们定期会面。
- AN EXPRESSION FOR CALCULATING CRACK EXTENSION 一种计算裂纹扩展的表达式
- That maths exam I took was a regular brain drain. 绞尽脑汁的数学测验，我真是绞尽了脑汁。
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