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- 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 mechanics toughness tests - Method for determination of fracture resistance curves and initiation values for stable crack extension in metallic materials 断裂机械韧性试验。断裂抗性弯曲度和金属材料稳定裂痕延伸性初始值的测定方法
- stable crack extension 稳定裂缝延伸
- 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。
- The fatigue striations were readily observed in stable crack growth regions for both aluminum alloys. 另外,从两款铝-镁合金在裂缝延伸的过程中,发现会有因为裂缝延伸产生裂缝尖端塑性钝化而形成疲劳纹路。
- 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。
- 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。
- Unhealed soil, the whole shell smooth and rounded, two-finger pinch, Couling three-year-old, stable crack peanuts, cracked shell, the one ugly rotten soil of lying quietly. 拭去泥土,但见外壳光滑圆润,两指一捏,这枚寿龄三年的老花生应声而裂,裂开的壳里,一块丑陋的腐土安安静静的躺着。
- 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。
- The evils ensue from lack of a stable government. 这些弊病是由于缺乏一个稳定的政府而引起的。
- 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。
- The horse in the stable has broken out. 马厩里的那匹马跑了。
- A little crack detracts from the value of the vase. 小小的裂痕减损那个花瓶的价值。