• TL and TR specimen crack extension direction is consistent with the orig

    并且含水率对各个方向木材断裂韧度影响趋势一致的。

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  • This treatment has an effect on delaying the crack extension and hence suppressing its cracking.

    处理方法起到延缓裂纹扩展抑制起裂的效果

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  • Numerical method for crack extension analysis based on fatigue fracture process of rock materials;

    工程控制爆破研究岩石定向断裂裂纹扩展

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  • A criterion for the crack extension rate and direction is proposed and compared with other criteria.

    文中裂纹扩展长度方向提出了一种扩展准则,并其他准则和实验结果进行了比较

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  • Fracture toughness (Kc). Critical value of the stress intensity factor for which crack extension occurs.

    断裂韧度(Kc):发生裂纹扩展应力强度因子临界值

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  • The crack growth rate was decreased with crack extension because of the sliding contact of the crack faces.

    随着裂纹扩展,裂纹扩展速率由于裂纹面的滑移接触而减小

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  • The virtual crack extension method has been utilized to simulate the J-integral of non-uniform welded joints.

    采用虚拟裂纹扩展焊接接头力学不均匀断裂参量J积分进行了数值模拟分析。

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  • Suitable heat treatment will increase the crack extension energy, and improve the plasticity of the composite.

    适当热处理提高裂纹扩展所需塑性功,从而一定范围内改善复合材料塑性。

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  • Change of section appearance is related to stress concentration of glass fiber on the base resin and on hindering of crack extension.

    断面形貌变化玻纤基体树脂中的应力集中作用裂纹扩展阻碍作用有关。

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  • The energy release rate and failure criterion for mixed mode are investigated by means of the method of equivalent linear crack extension.

    利用当量直线裂纹扩展研究复合型裂纹能量释放相应断裂判据。

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  • Theoretical study shows that the crack extension under shear loading is caused by tensile stress, and it does not belong to shear fracture.

    理论分析证明,在剪切载荷作用裂纹扩展由于拉伸应力引起的,并非剪切破坏。

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  • The whole life of an equipment part consists of the crack forming life (i. e. , the fatigue life or the damage accumulation life) and the crack extension life.

    机械(构)件寿命裂纹形成时间(疲劳寿命)裂纹扩展寿命两部分组成。

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  • The stress corrosion mechanism in mixed solutions was studied based on the metallographic observations of scanning fracture shapes and crack extension direction.

    根据扫描断口形貌裂纹扩展途径金相观察,还探讨混合溶液中的应力腐蚀机制

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  • Only if this short crack extends long enough and blunted wide enough, can it affect the principal crack extension and the distribution of stress and plastic strain.

    只有裂纹扩展足够钝化到足够,才能够影响裂纹扩展及其前端应力应变分布

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  • In order to predict effects on machined surface by developed notch-crack, crack extension mechanism of notch-crack-tip was investigated in cutting brittle materials.

    预测缺口裂纹加工表面形成的影响研究切削脆硬材料时缺口裂纹扩展

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  • 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,沿裂纹边界能量释放能量释放(动态裂纹扩展)。

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  • The outlined models for estimation of crack extension angles rely purely on the stress intensity factors at the crack tip which can be determined by finite element procedures.

    用这些模型预测裂纹扩展时,参数都归结尖处应力强度因子应力强度因子可以有限元方法求得的。

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  • The impact toughness, crack forming energy and crack extension energy of complex modified medium manganese austenitic steel. Are increased by 263%? 288% and 232% respectively.

    复合变质奥氏体冲击韧度裂纹形成裂纹扩展功分别比原来提高了263%、288%和232%。

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  • The calculated method of crack extension of arch DAMS is proposed using this strength criterion and finite element discrete crack model, and with some practical examples given.

    运用上述强度准则有限元分离裂缝模型提出了拱坝开裂计算方法给出应用实例。

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  • Within the range of test temperature, the factors controlling the toughness are fracture loads, the lengths of fibrous crack, and the energy absorbed by each fibrous crack extension.

    试验温度区内,控制韧性因素断裂载荷纤维裂纹长度单位纤维裂纹扩展能量

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  • This result supports previous fracture models that are based on absolute reaction rate theory and predicts an exponential dependence of crack extension rate on applied stress intensity.

    结果支持基于绝对反应速率理论光纤断裂模型预测裂纹扩张速率与外部应力强度关系。

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  • It is found that for 3d surface cracks, the interactions of cracks affect crack growth and extension in two aspects, i. e. the interaction either prompting crack extension or restraining it.

    研究结果表明裂纹相互作用对裂纹萌生扩展主要有两种影响相互促进彼此抑制,裂纹演化过程中空间位置起主要作用。

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  • Also, the crack extension time decreases with the increase of material creep index and the loading of overlying strata rock while it increases with the increase of tensile strength of roof rock.

    断裂孕育时间材料指数上覆岩层压力增大减小;裂隙扩展时间随材料的蠕变指数、上覆岩层压力的增大而减小,但随岩石的抗拉强度增大增加

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  • Then single aggregate concrete specimens is established, the influence of interface strength to the macro-strength is discussed, while the shape of aggregate on the crack extension is investigated.

    建立骨料混凝土试件探讨界面强度对混凝土宏观强度影响同时探讨骨料形状裂纹扩展影响

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  • 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关系, 可近似得到裂纹长度为零时裂纹面滑移接触影响裂纹扩展速率。

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  • In this article, I crack open acts_as plug-ins so you can see the extension model from the inside.

    本文中,将剖析acts_as插件可以了解扩展模型内部

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  • On the contrary, the easily broken particles enhance the extension stress at the crack tip, and hence the propagation rate of the crack.

    反之破碎粒子则增加裂纹尖端扩展应力,提高裂纹扩展速率

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  • Depending on their extension, a differentiation is made between macro and micro-crack.

    裂纹延伸长度,可分为开裂微开裂。

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  • Established the calculation model of waterproof layer tensile above bridge crack, compute a minimum extension and strength the waterproofing layer must have hi a certain width crack.

    建立桥面裂缝之上防水层张力计算模型,有效地计算出桥面混凝土一定宽度裂缝上防水层具备最小延伸率拉伸强度

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  • The results show that the failure of dam foundation is caused mainly by the extension of dam heel crack and the expansion of shear-yield zone of the foundation rock near the dam toe.

    结果表明坝基破坏主要表现裂缝延伸附近基岩剪切屈服区的扩展

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